SUBJ-01

Pain, Consciousness and Death

In Doomed you do not die when your health bar empties. You die when your brain reaches zero, and nothing else ends a character. Everything lethal in the mod - bleeding, a stopped heart, suffocation, sepsis, cold, poison - works by driving that one number down, which is why a body with no pulse and no blood is still technically alive and still savable. Between full alertness and brain death sits a long, playable middle: pain that eats your consciousness, a consciousness ceiling built from a dozen competing caps, a collapse state you crawl in, and one borrowed minute that the mod will offer you exactly once per life.

Brain death

One line in the entire mod is lethal. DeathHandler asks the same question every tick: has brain health reached zero with no last stand running. If it has, the run ends. Anything short of that is a living character, however ruined.

That single gate is what makes a Doomed body behave the way it does. A stopped heart, 0.1 litres of blood, both legs gone, lungs full of fluid - a character in that state is alive, because lethality is asked about the brain and about nothing else. The rest are upstream causes. Each drains the brain at its own rate, and the drain is what kills. A transfusion five seconds before the brain empties saves the character completely. The same transfusion a second after it empties saves nothing; the check has already fired.

So the survival clock is always the brain readout on the tablet rather than whichever vital is loudest. Two players at 0.8 litres of blood sit on different clocks if one of them is still haemorrhaging, because the drain rate scales with the bleed. Read the brain number, work out which drain is open, close that one.

The vanilla health bar was cut out of the lethality question deliberately. Every single incoming hit is capped to leave at least 1 hp, with two exemptions: the /kill command and falling out of the world. A modded projectile that advertises itself as bypassing invulnerability gets capped like everything else and still has to bleed you out. Should something slip past both cap layers and fire a real death event, that event is cancelled, health is restored, and the player is routed into the ordinary Doomed death sequence carrying the violent cause.

FRAGMENT 13-B - CERTIFICATE, FINAL LINE

SUMMARY: The clinical record as a body goes down and stops. One entry per kind of event, not per occurrence: the first time each happened, and a count of every time after.

RESPONSE: "Unconscious." Then "Agonal." Then "Blood under 2.5 L." Then, appended by the death itself and always last, "Brain death."

FINAL NOTE: From the enum's own header: "A kind ships with ALL of its write sites or it does not ship. A line that fires from two of fourteen paths is worse than no line at all, because an absence on this screen reads as 'nothing happened' and the whole claim of the certificate is that it records what did." The ids are permanent and are never reused, even for a kind that gets deleted.

~/body/ClinicalKind.java - constants DOWNED(16), AGONAL(19), BLOOD_FLOOR(13), CLOSED(20); written from DeathHandler.java:74

The clocks

One gate means the survival game is really a question of which drain is currently open. There are several. They run at wildly different speeds, and two of them refuse to stack on purpose.

Oxygen starvation is the slow one. It keys on oxygen DELIVERY rather than saturation, and delivery is saturation multiplied by red cell mass and by perfusion, so a saline-filled body reads 100 percent on a pulse oximeter while it starves. Below 33 percent delivery the brain loses 0.28 percent per minute for every point under the line. At total delivery failure that is about 9.2 per minute, roughly eleven minutes from a full brain to death.

Circulatory collapse is the fast one. Systolic pressure under 10 with consciousness under 5 takes 1.5 per second, a little over a minute from full. Almost every fatal chain in the mod ends here.

Critical exsanguination sits between them. Below the knockout blood line the brain drains at up to 50 percent per minute, scaled by how far below the line the body has fallen, then multiplied by up to 2.5 times by how hard it is still bleeding. A body torrenting from open stumps dies far faster than one that merely went quietly low, at identical blood volume.

The hypoxia drain and the exsanguination drain both switch themselves off while circulatory collapse is running, so three clocks never share a body at once. Stroke takes 0.025 per second while it progresses. Radiation, liver toxaemia, prion disease and severe overheating each take their own share. Against all of that, the brain heals passively at 0.008 per second, about an hour and three quarters to climb from 50 back to 100.

The exsanguination drain and its haemorrhage multiplier are both computed inside BloodHandler off the live bleed rate, so anything that slows the leak - a pressure hold, a clotting agent - moves this brain clock directly rather than by way of blood volume. Blood and Circulation

The agonal drain

There was once a reachable state where a player could not act, could not recover and could not die. The agonal drain closes it.

Unconscious - consciousness at or below 30 - and physiologically failing at the same time costs the brain 0.35 percent per second. Roughly five minutes from a full brain. About 43 seconds from the brain value where the last stand is offered.

Failing is doing real work in that sentence. The drain runs only where at least one of these holds: a bleed faster than 0.25 litres per minute, blood oxygen saturation under 70, systolic pressure under 60, blood volume under 1.8 litres, sepsis over 60, or liver toxaemia over 60. A body that is merely knocked out and otherwise stable stays untouched by it. Concussion sleeps itself off. A treatable cap holding someone under leaves them alive to be treated.

Sleeping and napping are exempt outright. Rest forces consciousness down to 10, and the exemption is what keeps an ordinary night in bed with a scratch from registering as an agonal collapse.

The drain resolves through the ordinary brain-death gate rather than through a kill of its own. That matters. The last stand can still fire out of an agonal collapse, the death receipt still names a real cause, and the bled-out achievement still applies.

The ceiling

Consciousness rises only as far as the lowest cap currently imposed on it. Every system that can cloud a head computes its own maximum, the lowest of them wins, and actual consciousness eases toward that. Raise a value that is not the binding cap and nothing moves. That is the single most common mistake players make over an unconscious teammate.

The caps, and what each is worth. Blood loss draws a straight line between the two configured blood lines: at the grace line (2.5 litres by default) the cap is 60 and the body still functions, at the knockout line (1.5 litres) the cap is 20 and locked out, and the line continues to zero a little below that. Head trauma caps at head muscle health times 1.6, floored at 20, so a beaten head concusses without pinning anyone at zero forever. Oxygen delivery caps at delivery times 1.2. Sedative caps at 100 minus the sedation load. Exhaustion caps at energy times 4.2, floored at 31, and that floor keeps tiredness alone short of a full faint. A bad rest caps at 70. Severe nausea caps at 150 minus sickness. Radiation caps at 100 minus 0.7 per point. Brain damage caps at the brain value directly. Sleeping or napping caps at 10. Terminal kuru carries its own cap.

On top of the caps, pain above 75 subtracts from the target point for point. Systolic pressure under 60 caps at 18 while blood is still above the knockout line, and at a flat 0 once it is not. Pain-shock past 0.66 forces the target to zero outright and overrides everything above it.

The movement is asymmetric on purpose. Consciousness falls at 12 per second and rises at 3, so a character blacks out four times faster than they come round.

Consciousness reads as a percentage on the tablet. Three values on that scale gate anything.

At 30 a character stops counting as conscious. Below it they collapse, and they stay down. The agonal brain drain reads the same line, and the HUD marks it with the Incapacitated moodle.

At 20 your hands stop. Below 20 the server cancels block placement, block breaking, block use, entity interaction, item use and attacks; movement is zeroed separately. Exactly one item is exempt, and it is Revivol, the smelling salts, precisely so you can fumble it out as you go under. The same line takes the screen to a near-solid black at 96.5 percent opacity, and starts the timer that bounds self-treatment.

At 5, combined with a systolic pressure under 10, the body is in perfusion collapse and the brain is being taken at 1.5 percent per second. The vitals widget paints that one red.

The grey-out below full alertness is cubed rather than linear, which was a deliberate fix. It reaches 21 percent at consciousness 40 and 49 percent at 30, so vision fails hardest across the last few points before the drop instead of blinding a player who is still standing and fighting.

Pain

Pain is computed per limb and then aggregated, and the two halves of that behave differently.

Each limb eases toward a resting target every tick. The target starts at 15 and is adjusted from there: minus 0.15 per point of intact skin, plus 0.1 per point of infection, plus 0.35 per point of active bleed, plus 0.6 per point of burn, plus 0.8 per point of frostbite above 40, plus up to 18 for a retained arrow, and plus 28 for an unsplinted fracture or 10 for a splinted one. A limb lying open on a surgical table adds its own ache. The whole target is clamped to the 0 to 100 range.

Acute injuries land outside that target. A dislocation adds 40 to 80 on the spot, a fracture adds 60 to 100, a burn adds its own spike, and each spike then decays back down toward the resting figure. Pain falls at 1 per second and rises at 0.6, so a spike drains away noticeably faster than a slow ache builds. Deep cold below 32 degrees subtracts 5 per second from every limb. A freezing body stops feeling its wounds.

Moving on an unsplinted broken leg adds 12 pain per second on top of everything else, multiplied by 1.8 while sprinting and scaled by how fast the ground is actually going past. Standing still stops it climbing.

The number on screen is the worst single limb rather than the average, taken against transformation spurt pain, amputation pain and kuru pain, whichever of them is highest. A septic rigor adds up to 18 over that as a whole-body term. Adrenaline is subtracted last.

The HUD moodle appears above 10 as Sore, becomes Pain above 30, Severe Pain above 55, and Agony above 80.

The 32 degree numbing line reads core temperature from the survival temperature model, which also supplies a separate consciousness cap curve on the same value - a body cold enough to stop feeling its wounds is already being dulled twice. Needs and Survival

The mask

Felt pain is the worst limb minus 0.35 per point of adrenaline. A full 100 adrenaline is 35 points of relief, which dulls a bad wound and leaves it legible. The mod deviated down from its source material here on purpose, so that a real injury still breaks through mid-fight.

The timing is the important part. The mask reads a smoothed adrenaline value that chases the raw one at 4 points per second. A sudden spike of 80 from a landmine or a compound fracture therefore numbs nothing at the moment it arrives. The pain flashes at full strength at the instant of the hit, the screen reddens, and only then does the numbing take hold over the following seconds. Wire the mask to raw adrenaline and the landmine never reddens the screen at all.

Adrenaline decays at 1.7 per second, so a spike is worth about a minute at most. Melee hits add a small amount. A dislocation adds 75. An amputation, a limb torn off by a fall, or being recognised by a deep predator all push it near or to the ceiling. Epinephrine adds 1.5 per millilitre. A runner's high raises the floor.

The mask is subtracted from the same number that feeds the consciousness penalty and pain-shock, which makes adrenaline genuinely protective. It can hold you under the pain-shock threshold long enough to finish what you were doing. Then it decays, and everything it was holding back arrives at once.

ThreatEncounterHandler writes the floor directly: 85 once a Deep Maw has recognised you, 90 once you have taken it past the focus damage fraction, so the mask deepens as the encounter escalates and lifts hard when the thing leaves. Threats

Adrenaline is kept in DrugHandler alongside the opioids, so its 1.7 per second decay and the last stand's +5 per second pin are tuned in the same file as opioid reception, tolerance and the epinephrine restart roll. Drugs and Pharmacology

Two shocks

Two separate systems with separate consequences, and the tablet names them differently for a reason.

Pain-shock is a 0 to 1 meter. It builds while felt pain sits above 75 and ebbs while it does not, at a rate that takes 30 seconds to fill or to clear completely. Past 0.66 it forces the consciousness target to zero regardless of every other cap in the stack, so a character blacks out from pain alone on perfectly good blood, oxygen and pressure. Roughly 20 seconds of sustained agony will do it. This is the knockout Revivol exists to break: clearing it costs nothing but the item, and the deep causes Revivol leaves alone are the ones that would put you straight back down.

Motor-shock is a 0 to 100 value, and it governs standing rather than awareness. Pain above 99 floors it at 100. Stamina below 1 sets it to 60. Collapsing floors it at 20, which puts a gap between going down and popping back up. It bleeds off at 10 per second while conscious and only while conscious, which is the reason an unconscious body waits on the floor for consciousness to return before it gets up.

Above 10 motor-shock, nobody stands. Six seconds of recovery from a fresh collapse, ten from a stamina crash, assuming nothing else is holding you under.

The floor

Three conditions each drop a standing body on their own: unconsciousness (consciousness at or below 30, or a brain at zero), leg capability under 0.25, or motor-shock above 10. Collapsing floors motor-shock at 20.

A downed player is forced into the vanilla crawl pose. Other players see a prone body on the ground, and only a genuine high-speed fling swaps in a ragdoll puppet. Your own hop is cancelled while an actual launch from an explosion or a jump pad survives, because being thrown is the whole point of being ragdolled. Movement drops to a crawl at 0.22 of base speed while conscious, and to zero otherwise.

Standing again needs four things true at once: conscious, motor-shock below 10, leg capability back at or above 0.25, and settled - on the ground or in water with almost no horizontal movement. Motor-shock recovers only while conscious, so an unconscious body waits on the floor until whatever is capping its consciousness improves.

Sleeping and napping are never read as a collapse. Sleep forces consciousness to 10, and before the exemption existed that ragdolled the sleeper and shook the camera over the bed view.

Being downed leaves your hands working until consciousness also crosses 20. A conscious crawling player can bandage, inject and drag themselves to their bag. That is the survivable band, and it is worth knowing exactly where it ends.

Every treatment committed on yourself routes through one check, and that check has a hard time limit.

A counter starts the moment consciousness drops below 20 and resets to zero whenever it rises back above. Self-treatment stays open for 180 ticks after passing out - nine real seconds. After that the server refuses every self-directed commit and tells you your hands will not answer you. This is the fumble-the-AED-onto-your-own-chest window, and it was sized to stop right there rather than stretch to defibrillating yourself forty seconds into an arrest.

The nine seconds are counted in real ticks and left unscaled by the server's pace factor, because the window bounds a human's reaction time rather than a simulation rate.

An active last stand overrides all of it. Through the walk and crawl phases you may treat yourself however long you have been under, because using your own items to save yourself is the entire purpose of the window. Through the final numb phase you may not. The arms are gone.

A second player treating you sits outside this system altogether. A conscious medic can work on a patient who has been out cold indefinitely, which is exactly why the self-treatment grace can afford to be so short. A matching consent system runs alongside it: treatments that would normally need the patient's agreement proceed automatically on a body that cannot answer, and a patient who explicitly refused keeps that refusal after they black out.

Every treatment commit in the mod, yours or a medic's, resolves through CoopMedical first, so the consciousness line that stops your hands is the same line the entire treatment layer checks before it will do anything at all. Injury and Treatment

FRAGMENT 09-A - HANDS

SUMMARY: A self-directed treatment commit arrived from a body that had been under consciousness 20 for more than 180 ticks. The server resolved the patient id, found it pointing back at the sender, and refused. The same refusal fires whether the packet named the self path or forged the sender's own entity id.

RESPONSE: One action-bar line, dark red, one per attempt: "Your hands won't answer you any more." Nothing else was sent. The item stayed in the hand and the minigame never opened.

FINAL NOTE: The line is per attempt rather than per tick, so it reads as feedback and never as spam. It has no counterpart on the other side of the body. A second player standing over the same patient may work on them for as long as they like and will never see it. Nothing on screen counted down to it.

~/body/CoopMedical.java:94 and :109, gated by canSelfTreat at :142-152

The roll

The last stand is offered once per life, and only under a precise set of conditions. The brain must be at or below 15 and strictly above zero, consciousness must be at or below 30, the roll must be unspent for this life, and the server config must have it enabled. Miss the window and it is gone. Fail the roll and it is spent for the rest of that life either way.

The odds come from somewhere else entirely. They are read off your mood from roughly nine minutes ago. The mod keeps a ten-slot rolling history of mood, pushed once every 60 seconds, and the roll evaluates the oldest slot - how the character was doing before the collapse rather than during the panicked moment of it. That value goes through a smooth curve running from a 10 percent chance at the most despairing mood to a 70 percent chance at the most hopeful. Neutral mood lands on exactly 40 percent.

Two consequences follow. A character who has been miserable for ten minutes is far less likely to get up than one who has been doing well, which makes looking after your mood before a dangerous descent a real investment. And a fresh life starts with the history slots at zero, which reads as neutral, so the first ten minutes of any life sit at a flat 40 percent however the character has actually been feeling.

An injury that sets the brain to zero in a single step skips the roll, because the check requires the brain to still be above zero when it fires. An obliterating explosion, a head torn off, or a head-first landing on a server with lethal head trauma enabled kills without ever offering the stand.

The odds come out of MoodHandler's ten-slot happiness ring through getDelayedHappiness, so the mood system is the roll's only input and every other vital is ignored by it. Psychology

Borrowed time

A successful stand restores nothing - no blood back, no heart restarted, and the bleed runs exactly as fast as it did. What it does is hold death at the door and make the body obey while the door is held.

The window is 1260 ticks. The first 60 are a three-second recognition sequence, unskippable, and they do not come out of your 60 seconds. The remaining 1200 ticks are those 60 seconds, under your control, split into three phases measured from the end.

For the first 30 actionable seconds you walk, at 0.9 of base speed. With one leg and no blood and a stopped heart, the body answers anyway. From 30 seconds down to 15 you crawl, and your hands still work. In the final 15 seconds the arms go: dragging yourself still works, using an item or attacking anything does not. The HUD labels the three MOTOR OVERRIDE, OVERRIDE DECAY and DISTAL FAILURE.

The movement phases are a floor rather than a ceiling. Walking and crawling GRANT a capability to a body that has lost it, and they take nothing from a body that still has it. When the grant decays at the 30-second mark it stops holding you up rather than forcing you prone, so legs that are genuinely wrecked drop out from under you while a body dying of something else keeps walking. The arms are the deliberate exception, and they are absolute - the final phase takes your hands whoever you are and however awake you feel.

Consciousness is pinned at a minimum of 45 for the whole window, which is the only reason the window is usable at all; every cap in the stack would otherwise hold you under the blackout line. Adrenaline is pinned climbing at 5 per second for exactly 63 seconds, so pain does not spend the minute for you. Everything underneath stays exactly as dead as it was. The moment the window closes, whatever was true resolves.

The stopped heart

Nothing sets a cardiac arrest flag. Arrest is derived every tick from heart rate: below 20 beats per minute is arrest, and it ends the moment the rate genuinely recovers. Fibrillation reaching 100 stops the heart, and a stopped heart holds at zero until something restarts it.

Arrest drains nobody directly. It collapses blood pressure, the pressure caps consciousness, and circulatory collapse takes the brain. That chain is the killer, and it is why the pressure deserves as much attention as the rhythm.

Chest compressions are a bridge. A valid cadence - one press every 8 to 14 ticks - holds systolic pressure at a floor of 30 while it continues; a late press between 14 and 24 ticks holds a weaker floor of 22, and only for 12 ticks instead of 20. Past 24 ticks the run breaks and starts over. Heart rate, fibrillation, blood volume and oxygen saturation all sit outside what compressions touch. They buy time against the brain clock. That is the whole of it.

A defibrillator is violent whichever way it goes. Every shock tears the chest skin by 5, spikes that limb's pain by 20, drops the patient into a collapse and crashes systolic pressure to 40, win or lose. The manual unit's success chance is 1 minus the distance between the dialled power and twice the fibrillation percentage, divided by 120, so the ideal power is exactly double the fibrillation and a 60-joule error roughly halves the odds. An AED's completed cycle converts fibrillation with certainty. Against a fully arrested heart both units top out at 20 percent, because a defibrillator corrects a rhythm rather than starting one from nothing.

Epinephrine starts one. An injected dose gives 6 active ticks per millilitre, and each of those ticks rolls a 3 percent chance to restart the heart at 60 beats per minute. A full 100 millilitre syringe is 600 ticks and close to certain. The restart hands back a fibrillation of 50, so the heart that comes back is not a steady one.

What survives

The brain reaching zero puts up the death screen, and the real vanilla death is committed at that same moment. Items drop immediately according to the server gamerules. Disconnecting on the death screen saves nobody - the kill has already landed, and the screen's continue button only respawns you.

The receipt names a cause, and it derives that cause from real state rather than decorating it. Drowning wins if the body is underwater. A violent death wins if the bleed was still above 0.02 litres per minute or the blood is under 2.5 litres, and a violent death scatters the body into harvestable flesh limbs and lootable prosthetics. Failing those, the most specific cause wins: terminal prion disease above 78, hepatic encephalopathy above 50 toxaemia, a named disease above 55, sepsis above 60, hypothermia below 30 degrees core, then cardiac causes. Dying with blood under 2.5 litres also grants the Mossified achievement, awarded a moment before the death commits.

A lethal blow landing while a transformation finishes kills nothing. Past 95 percent progress, or once the final growth stage has begun, the death is intercepted and becomes the Refusal Sequence.

Almost everything resets on respawn. Blood, brain, consciousness, pain, every wound, every amputation, hearing loss, radiation, nausea, lung tar and the last-stand roll all return to baseline, and a fresh life gets a fresh chance at the stand. Psychological trauma carries - it is a mind attribute and it stays with the character. Nicotine dependence and your smoking history survive on purpose, so respawning is closed off as a cure for addiction. Skills reset only where the server has that option enabled.

DoomedDeath checks transformation progress before it commits anything, and past the final growth stage or 95 percent the kill is intercepted and becomes the Refusal Sequence. Transformation

The receipt's ordering reads straight off the disease meters - prion load past 78, toxaemia past 50, the worst named pathogen past 55, sepsis past 60 - so whichever was highest on the last tick picks the picture you are shown. Disease and Infection

FRAGMENT 13-C - MOSSIFIED

SUMMARY: Brain-death reached with under 2.5 litres of blood in the body. The grant is issued one line before enterDeath, while the character is still technically alive.

RESPONSE: Advancement, challenge frame, toast and chat announcement. Title: "Mossified". Description: "Survive the wall. Bleed out anyway."

FINAL NOTE: The datapack file carries its own note: "you didn't die to the big thing, you died to the leak. Rare enough that announcing it can't spam chat." Its criterion is minecraft:impossible, so nothing in the datapack can ever award it. One line of Java is the only route in.

res/data/doomedmatu/advancements/mossified.json; granted at ~/body/DeathHandler.java:119-121

SUBJ-02

Blood and Circulation

Blood is the mod's main kill chain. You carry five litres, you lose them through per-limb wounds that each keep their own bleed rate, and death arrives as brain death once circulating volume can no longer perfuse the brain. Almost every treatment in the game touches this system somewhere: a bandage masks flow, a tourniquet masks a whole limb chain, a transfusion buys volume and cells back, and saline buys volume alone. The numbers below are read out of the running code, which is not always what an in-game tooltip or a design note says.

Five litres

A healthy body holds 5.0 L. The stored value is clamped to the range -5.0 to 7.5 L, and the negative half is real: it is the exsanguination window. Perfusion, oxygen saturation and blood pressure all read off volume, so a body at 0 L keeps falling, and the pressure collapse finishes it.

Regeneration is slow and conditional. Below 5.0 L the body rebuilds at a base 0.05 L per minute, multiplied by a tissue-repair factor (food, energy and wasting) and by a hydration factor running from 1.0 at thirst 60 down to 0.30 at thirst 0. A dehydrated, starving body rebuilds blood at a small fraction of an already slow rate. Full nutrition still means a hundred minutes from empty to full. Regeneration answers nothing while a wound is open.

Two configured lines shape the bleed-out. graceFunctionalBlood (2.5 L by default) is where consciousness starts being capped, at 60. knockoutBlood (1.5 L by default) is where the cap reaches 20 and the unconscious lockout band begins. The cap runs on a straight line between them, and the server holds knockout at least 0.25 L below grace whatever the config file says, because closing that gap turns the whole survivable window into a single-frame drop.

Below the knockout line the brain begins an agonal drain: 50 percent per minute at zero blood, scaled down toward the line, and multiplied by up to 2.5 depending on how fast the body is currently bleeding. A body torrenting from four stumps dies far faster than one that merely went quietly low.

Heat takes volume the same way a wound does but on the plasma path: an overheating body sweats blood volume off through a direct write (TemperatureHandler.java:315), so the litres fall without costing a single red cell. Needs and Survival

Bleed units

Bleeding is per limb. Each limb carries its own bleed value in source units on a 0 to 100 scale, and each unit is worth 0.015 L per minute of blood loss. The whole-body rate on the HUD and the tablet is the sum of every limb's units converted to litres per minute.

A limb bleeds only as hard as its skin is torn. The cap is 100 minus skin health, applied every tick, so a wound that has knitted its skin back loses the ability to hold a heavy bleed along with it. Bandaging a limb tends to make its bleed value stick low afterwards rather than snapping back.

What opens a bleed depends on the damage. A generic melee hit adds 2.0 units per point of damage, a claw or blade 3.0, a projectile 3.0, an explosion 1.5. A fracture opens a flat 12 units. Fire and freezing add none at all, and the generic fallback used for magic, thorns and suffocation adds none either - those tear skin and leave the blood where it is.

The HUD moodle tiers are worth learning, since they are the rate readout most players have. Anything above 0.005 L/min shows light bleeding, above 0.09 shows bleeding, above 0.225 heavy bleeding, and above 0.45 the catastrophic bleed icon.

One rate signal is deliberately dishonest about your safety. The whole-body bleed rate is tapered by perfusion: between 0.75 L and 0 L of blood, the reported and drained rate scales down to zero. The wound is exactly as open as it was; what has changed is how much is left to push out. The number falls as you empty.

Radiation drains blood with no wound anywhere on the body - above sickness 10 the handler removes rad x 0.00025 L a second (RadiationHandler.java:41,90-91), so the volume falls while every bleed readout, drip and pool sits at zero. Disease and Infection

Excision bills its blood on a different channel entirely: taking an organ out subtracts a flat 1.0 L directly and writes only 0.45 bleed units to the abdomen (ExcisionService.java:44,49,91,101), so the largest single loss in the mod barely moves the external bleed line. Organs

Clotting

A wound closes on its own, and the rate depends on how bad it is. At 2 units or below a capillary bleed clots at 0.050 units per second. At 8 units or above a serious tear clots at 0.017 units per second, and the rate blends linearly between those two points. The slow end is deliberate: at 0.017 an untreated serious wound stays open long enough to actually kill you, where the earlier faster rate made a single wound survivable forever.

Five modifiers multiply into that rate, and they apply to internal clotting as well.

A fragment still in the wound suspends natural clotting completely. Suspends, not slows. A limb with shrapnel in it weeps until the fragment is pulled, and waiting helps by exactly nothing.

Venom is an anticoagulant. Clotting is multiplied by 1 minus venom divided by 20, so it reaches exactly zero at a venom level of 20 or above. Venom also thickens the blood toward its own level over time.

A non-opioid painkiller thins the blood. The penalty scales with the drug level and tops out at halved clotting. Medicating the pain of a bleed makes the bleed last longer.

Cold hurts. Below 35 C clotting falls linearly and bottoms out at 60 percent by 30 C. It never turns off entirely.

Warmth helps a little. A body held in the comfortable 36.5 to 37.5 C band earns up to an 8 percent bonus. The two temperature terms are exclusive - one or the other, never both together.

The Bleeder trait sits on top of all of it at 0.55x, which is close to doubling how long everything bleeds.

The fragment that suspends clotting is the same foreign body that re-tears the limb it sits in, adding 0.35 units plus 0.45 per unit of depth every time it shifts (ForeignBodyAggravationHandler.java:50,51,170). Injury and Treatment

Deep wounds

Past 20 bleed units - 0.30 L/min from one limb - a wound is promoted to DEEP. Promotion also wipes any stitched or reopen bookkeeping the limb was carrying, because a fresh heavy tear is a new wound and wants treating again.

A bandage's effect scales with how far the wrap actually got. The bleed multiplier lerps from 1.0 at no wrap down to the specific dressing's floor at full wrap. Complete the wrap to 90 percent or more and the bleed is set to zero outright. On a deep wound that has not been stitched, that same completion arms a reopen countdown of 3600 server ticks - three minutes - after which the wound tears itself back to the deep-wound threshold or whatever the current skin cap allows, with an audible squelch and no text warning.

A suture is the only thing that clears the deep state properly, and only if the stitching minigame scores 0.55 or better. A clean close knits skin by up to 25, stops the bleed dead, marks the limb stitched and writes a real closure to the record. A ragged stitch below 0.55 closes nothing: the wound stays deep and unstitched, the reopen timer arms exactly as if it had been bandaged, the suture is still consumed, and below quality 0.5 it also works dirt into the wound and marks the limb infected.

A stapler is the guaranteed mediocre alternative. It closes instantly with no minigame, knits skin by 15 instead of 25, zeroes the bleed and clears the deep flag, and costs 22 pain against a neat stitch's 12.5.

Cauterizing with a held flame sears the bleed to zero, and charges 30 burn, 45 pain and a 40 percent chance of seeding infection at 20.

The deep and stitched flags clear once the limb is at zero bleed with skin at 99 or above.

Despair writes wounds of its own: the standard self-harm cut adds 6 to 10 units, the severe one 45 to 60, and the violent head sequence 60 to 90 (DespairHandler.java:64,75,81) - all of them past the 20-unit deep threshold, and the last of them equal to an open amputation stump. Psychology

Internal bleeding

Internal bleeding is stored per limb directly in litres per minute and drains blood alongside the external channel. It sits out of reach of every dressing in the game.

The drain is soft-saturated rather than clipped. Up to a summed 0.9 L/min it drains one for one; above that it curves toward a hard ceiling of 3.0 L/min. Multiple internally bleeding limbs stack, with diminishing returns.

It resolves on its own at 0.003 per second, halved to 0.0015 for any single limb above 0.25 L/min. A bruise clears in minutes. A serious tear takes far longer and wants a drug.

The early-game answer is stillness. While the body is genuinely not moving - under 0.03 blocks per tick horizontally, not sprinting, not swinging - it tamponades at an extra 0.0025 units per second. Crouching multiplies that by 1.7. So does being downed, so dragging an unconscious teammate somewhere quiet is worth the trip. Adrenaline works against it: the rate is multiplied by 1 minus adrenaline over 150, floored at 0.30, so a frightened body clots badly and still clots. All the external clot modifiers apply here too, shrapnel included - a fragment suspends internal clotting exactly as it suspends external clotting.

Procoagulant is the systemic answer. It reduces internal bleeding by 0.06 L/min per ml across every limb, cuts external bleed by 40 percent at a full 100 ml, and raises blood viscosity by 0.35 per ml.

Regenex injected into the chest multiplies thoracic internal bleeding by 0.45 at a full 25 ml dose. Anywhere else in the body, internal bleeding ignores it.

Every one of these routes goes through the wound ledger. A treatment that wrote the limb value directly used to be silently reverted the next time that limb was touched, which is the bug behind years of reports that internal bleeding simply never went down.

Tourniquets

A tourniquet goes on a non-vital region only. Head, neck, eyes, thorax and abdomen are refused - there is nothing above them to tie against.

Once fastened it stops external blood loss from the anchor limb and everything distal to it. The stored wound is unchanged; only its contribution to the drain is masked. The wound icons stay exactly as bad as they were.

The strap hurts immediately. Anchor-limb pain ramps at 2 per second up to a cap of 40.

At 540 seconds - nine minutes - the safe window closes. Every cut-off limb in the chain loses 2 percent muscle per second. Any limb that falls below 5 percent muscle has its infection floored at 10 and is flagged infected, which puts it on the sepsis path.

At 840 seconds - fourteen minutes total - the limb is gone. It comes off by the necrotic path rather than the saw path, so the stump is dry: tissue that died on the body does not haemorrhage the way tissue cut off it does. That leaves five full minutes after visible necrosis begins in which taking the strap off still saves the limb.

Applying one costs 1 of the strap's 8 condition points, and the source strap is consumed - it lives on as the limb's stored condition and is handed back at that condition when removed. Removal unblocks the limb and it resumes bleeding from wherever clotting left it.

With nothing in inventory a wound can still be pressed by hand. Both hands must be empty, the panel routes it, and the server revalidates every tick.

Pressure masks flow the same way a tourniquet does - the stored wound is untouched. On an ordinary wound the limb's flow is multiplied by 0.35. On a deep wound the floor is 0.7, because a hand cannot close an artery. It never reaches zero, so a bandage always beats a hand.

One limb carries the benefit at a time. One pair of hands, and the code enforces that as a single slot covering both the active hold and the fading credit afterwards.

Holding banks credit. Ten seconds of real, still, paid-for pressing earns the full release credit, which then decays back to open flow over twenty seconds. A partial hold drains proportionally sooner, and a tap banks nothing.

It costs stamina at sprint drain rate. Below 0.5 stamina the press stops helping and starts grinding instead, adding 2 pain per second to the limb toward a ceiling of 60.

The movement gate is positional and server side. Move faster than 0.12 blocks per tick horizontally and the hold releases, whatever the client claims. Pressure is refused on a dismembered limb, on a limb already tourniqueted, and on a limb that is not actually flowing. In co-op the hands belong to the helper and the wound to the patient, and one wound accepts one helper.

FRAGMENT 09-C - STRAP TIMEOUT

SUMMARY: One line, on the action bar, at fourteen minutes: "The strap was on too long. There was nothing under it left to save."

RESPONSE: By the time it prints the limb is already gone. TourniquetHandler takes it through necroticLoss rather than the saw path, so the stump comes off dry and the strap falls away with the limb it killed. The message is the only notice the system ever gives. The nine-minute mark that started the 2 percent per second muscle drain and floored infection at 10 across the whole cut-off chain printed nothing whatsoever.

FINAL NOTE: The tourniquet timer is displayed nowhere. A player who has never lost a limb this way has no reason to suspect two clocks were running.

body/TourniquetHandler.java:68-76,79-95

FRAGMENT 02-D - LEGALLY DEAD

SUMMARY: An advancement, announced to chat, framed as a challenge: "Walk around with less than a quarter of your blood."

RESPONSE: The grant is a float compare in the body tick against 1.2 L, with a single gate - death must not already be pending. Nothing checks whether you are moving, and nothing checks whether you are conscious. At 1.2 L the consciousness ceiling computes to 8 on the straight line between the two config blood lines, well inside the unconscious band, so what usually earns the toast is a body on the floor. A quarter of 5.0 L would be 1.25.

FINAL NOTE: Offline catch-up floors blood at exactly 1.2 L, so a player who logs out bleeding and logs back in can never earn it that way. Whether the two constants were meant to be the same number is not recorded anywhere.

data/doomedmatu/advancements/legally_dead.json; body/DoomedAdvancements.java:45,76; body/ConsciousnessHandler.java:86,114,115; body/OfflineCatchUp.java:36,103

Stumps

A severed limb does not bleed - it is gone. What bleeds is the amputation boundary, and it is counted separately from any limb's stored bleed value.

Each amputation boundary adds a flat 60 bleed units. At the standard conversion that is 0.9 L per minute of arterial loss per severed chain. The source comment beside that constant claims 1.5 L/min. The arithmetic in the code gives 0.9, and the code is what runs.

Only the boundary counts. A whole arm off at the shoulder is one open stump rather than three, so upper arm plus forearm plus hand bleed as a single wound. Losing all four limbs bleeds twice as hard as losing two, which the older stump-slot counting got wrong.

Three things close that channel, and all three are things a player can actually do:

• a tourniquet anywhere proximal to the amputation, since the block check walks up the chain
• dressing or cauterizing the open stump the amputation left on the parent segment, until that stump's own bleed drops to 0.5 units or below
• fitting a prosthetic, whose socket seals the stump

A saw amputation leaves the stump bleeding at full rate with 100 contamination and a 300 second disinfect window. A limb lost to necrosis instead - deep frostbite, or a tourniquet left on past fourteen minutes - has its stump wound written to zero bleeding and marked clotted, with contamination floored at 45. Dry, but dirty.

Shock

Bleeding out can stop your heart before anything else has failed, and nothing in game announces it.

Below 2.0 L of blood, each second rolls a chance to seed fibrillation. The odds ramp from zero at 2.0 L up to a cap of 6 percent per second at 1.0 L and below. The seed is non-forced, so a transfusion that rebuilds volume lets the rhythm settle back down on its own.

A separate acute-trauma seed fires at 4 percent per second whenever motor shock is above 70, which happens on extreme pain with bottomed stamina. Shock bleeds off at about 10 per second, so that is a brief window after a hit rather than a standing risk.

The general begin-gate also seeds fibrillation whenever oxygen delivery is under 50, systolic pressure under 82, heart rate over 200, viscosity over 95, or body temperature under 28 C. A body that is merely anaemic can sit under the oxygen-delivery line permanently, and the anaemia floor is placed where it is for exactly that reason.

What kills you is the collapse chain rather than the rhythm. Below systolic 20 every limb loses 0.6 percent muscle per second. Below systolic 10 with consciousness under 5 the brain itself drains at 1.5 percent per second. The agonal low-blood drain deliberately steps aside while that is running so the two never stack.

Blood pressure itself is driven by volume through two terms: a target that subtracts a quarter of the volume deficit, and a multiplicative factor of 1 plus 1.1 times the deviation from full. Dehydration multiplies pressure by as little as 0.72 at deeply negative thirst.

Red cells

Volume and carriage are tracked as two different numbers, and that is the single most confusing thing about blood in this mod.

Red-cell fraction starts at 1.0 and is clamped between 0 and 1.5, so repeated transfusion can bank a modest reserve above baseline. Losing whole blood removes cells in proportion to the current concentration. Adding compatible whole blood adds litres divided by 5 to the fraction.

Oxygen delivery is arterial saturation multiplied by red-cell fraction multiplied by a perfusion term of systolic pressure over 80, capped at 1. A pulse oximeter can read a perfectly normal saturation while the organs are starving. Saturation says nothing about how many cells there are to saturate.

Cells rebuild far more slowly than volume: 35 percent of the volume regeneration rate, expressed as a fraction of baseline. At best that is roughly 0.35 percent of your normal red-cell mass per minute. The Anaemic trait cuts it to 0.45x on top of that.

Iron gates it. Each litre of blood lost spends 22 iron, and simply being alive spends 10 per in-game day. Above an iron store of 45 the rebuild runs unrestricted. Below it, both the rebuild rate and the ceiling fall away, down to a marrow floor of 0.12 on the rate and a red-cell ceiling of 0.68 at empty stores.

That 0.68 floor is deliberate. A fully saturated body at 0.68 sits at about 66 oxygen delivery, which clears both the 50 seeding line and the 60 rising line for fibrillation. Iron starvation is meant to leave you fragile and slow to recover. It is not meant to execute you.

Brain damage hangs off delivery rather than volume: below an oxygen delivery of 33 the brain loses 0.28 percent a minute for every point under the line (RespirationHandler.java:73,79,254-257), and that drain deliberately stands down while the terminal circulatory collapse is running so the two never stack. Pain, Consciousness and Death

The reaction

A wrong bag does two separate things. It raises a symptom level, and it banks a hemolysis debt in litres.

The symptom level is added, not maxed, and capped at 100. A second wrong bag onto a reaction already running pushes it toward the ceiling. It decays at 0.70 per second, so a full ABO reaction runs about two and a half minutes.

The debt is uncapped, and that is the point. It is computed as 0.75 L multiplied by how much of the bag you actually pushed multiplied by 1.2 plus the raw severity over 100. A fully pushed ABO bag therefore owes about 1.65 L against the 0.75 L it delivered. A fully pushed Rh-mismatched bag owes about 1.24 L. Both scale with the plunger, so an incompatible transfusion costs blood at every depth and every tier.

The debt burns at 0.016 L per second scaled by symptom strength, with a floor of 30 percent of that rate. Symptoms fade; hemolysis finishes the job afterwards. Waiting a mild mismatch out still ends in the red.

While the reaction runs it adds 1.5 sickness per second, 0.08 fibrillation per second, a slow temperature climb, and pain to the thorax and abdomen. You are told when the worst passes, at symptom level 25.

One thing the tablet says that the code does not do: the readout labels an active reaction as "further blood restricted". Nothing anywhere gates a further transfusion on the reaction level. Another bag goes in whenever you want it to - it just adds its own severity and its own debt.

Transformation is the other source of severity. As a body diverges from human, banked human blood stops being yours. Divergence contributes nothing below transform factor 0.25, then ramps to 70 at full transformation. It adds to any ABO or Rh clash and the total is capped at 100. Saline is untyped, so a transformed character always keeps a volume expander even after blood bags stop working for them.

Every Doomed character carries an ABO and Rh(D) group. It is drawn once when you commit to the run, on realistic population weights rather than a flat eight-way roll: O+ 37 percent, A+ 34, B+ 9, O- 7, A- 6, AB+ 4, B- 2, AB- 1. Old saves that pre-date typing get theirs derived from the player UUID, which is stable across every reload, so relogging rerolls nothing.

The type belongs to the character rather than the life. It survives death and respawn - resetVitals never touches it.

Compatibility is checked on packed red cells. Donor cells are refused if the donor carries an A antigen the recipient lacks, or a B antigen the recipient lacks, or if Rh-positive blood is going into an Rh-negative recipient. O- can donate to everyone. AB+ can receive from everyone. The tablet spells out both lists, and a labelled bag's tooltip names exactly which recipients its cells are safe for.

The severity of getting it wrong is tiered. An ABO mismatch scores 100. An isolated Rh mismatch scores 45 - serious, and slower. An unlabelled bag would score 70, though that branch is never reached during a transfusion, because an untyped bag has its type rolled and permanently written at the moment it is pushed.

That is the real risk of the plain, unlabelled Blood Bag. It is a gamble whose odds are your own type against the population table. The Human Blood Bag found as loot or drawn from a person is typed and labelled up front. The Experiment trader's emergency blood is always a fixed O-.

FRAGMENT 07-A - DELAYED REACTION NOTICE

SUMMARY: Three separate records describe the hemolytic reaction as delayed. The Human Blood Bag tooltip reads "Get it wrong and the reaction comes for you hours later." The plain Blood Bag tooltip calls it a "delayed reaction". The changelog entry that introduced blood types announces "a delayed hemolytic reaction - sickness, fever, pain, fresh blood loss, and a heart that can tip into fibrillation".

RESPONSE: The alert fires on the same tick as the push. DrugService scores the mismatch and calls TransfusionReactionHandler.start, which prints "That blood is wrong - your body is attacking it" immediately whenever no reaction was already running. Symptoms then decay at 0.70 a second, so a full ABO reaction has burned out in about two and a half minutes. What genuinely arrives late is the hemolysis debt, which keeps destroying blood at the tail rate long after the symptoms have faded.

FINAL NOTE: Either the tooltips describe an older build, or they describe the debt and call it the reaction. Nothing in the commits separates the two readings.

res/assets/doomedmatu/lang/en_us.json:630,670; CHANGELOG.md:813; body/TransfusionReactionHandler.java:42,81; body/DrugService.java:960

Bags and saline

One full blood bag restores 0.75 L. Right-clicking it only tells you to open the health panel and apply it to a limb, which runs the syringe minigame. Push less than the full plunger and the rest is spoiled, and you are told the percentage you managed.

Saline restores 0.5 L, thins the blood by 40 viscosity, and adds 60 thirst. Critically, saline writes blood volume directly rather than adding whole blood, so it contributes zero red cells. It fixes the volume number on the tablet, leaves oxygen delivery exactly where it was, and dilutes what carriage was left.

Blood bags spoil. Default shelf life is 12 hours of charged time, tracked on the stack so it survives saves, chests and trades. A powered freezer charges time at 0.1x and an icebox at 0.2x. Neither ever charges zero for blood - whole blood is refrigerated, not preserved. A mined freezer's contents are charged their full carried interval at room rate before they can be placed again.

Saline works the other way round. A sealed bag keeps forever, so loot and trader stock never age. Spiking it starts a 24 hour clock, and running a day-old open bag into somebody dirties the injection site and gives you the infection instead of the fluid.

An empty blood bag draws 0.75 L from you, or from another player when you right-click them with it. It refuses if the draw would leave the donor under 3.25 L, and it refuses if the donor's red-cell fraction is below 0.80 - a saline-expanded body has volume to spare but not cells. The donor is told who did it.

A transfused bag comes back as a used empty, marked contaminated, carrying the pathogen masks of both bloodstreams it touched. Refilling it does not wash it out. Pushing a contaminated bag dirties the injection site and rolls a blood exposure for every agent it carries.

The 0.1x rate belongs to a freezer that is actually drawing power - an unpowered one settles its contents as AMBIENT and ages blood at the full room rate (FreezerBlockEntity.java:86,112), so a brownout on the machine row is a spoiled bag rather than a paused clock. Machines, Power and Fluids

Drips and pools

The visuals are server-authoritative so every player sees the same blood, and they are keyed off the same whole-body rate the drain uses.

Drips start at 0.05 L/min. They come off the worst-bleeding limb's rough position on the body, biased downward, roughly two thirds of the time, with the remainder scattered across whatever else is bleeding. Heavier bleeding produces more frequent drips.

Floor pools need 0.35 L/min and both feet on the ground. That threshold sits much higher than the drip threshold on purpose - a scraped shin drips and fades, and only a wound that genuinely needs treating paints the floor. A pool lasts 50 seconds, holding solid for the first three quarters of that and fading out over the last quarter. It also checks the block underneath it twice a second and vanishes if that block is removed.

Colour has two independent layers. The base is a per-player choice, defaulting to 0xFF0907, sent to the server and baked into every particle and pool that player spawns, so other people see your blood in your colour rather than their own.

On top of that, transformation shifts blood from red toward orange 0xFF5500. The factor is your transform stage divided by 4, or 1 outright once you are Corebound. That is the same factor that drives transfusion divergence. A character whose blood has visibly changed colour is a character whose body has started rejecting human blood.

The colour factor is transform stage divided by 4, or 1 outright once you are Corebound (DoomedBlood.java:33-36), and it is the same number feeding transfusion divergence, so the orange in the pool on the floor is a direct readout of how badly human blood now fits you. Transformation

SUBJ-03

Organs

You have eleven internal organs. None of them helps you - a healthy organ does nothing you can feel, and its only job is to stop being a liability. Damage to one degrades the sim through a channel that already exists: a failing liver poisons your blood, failing kidneys back potassium up into your heart, lost lung caps how hard you can breathe. Since 0.2.9 organs recover, one step per dawn and only on a day they were left alone, but every injury past a certain depth leaves permanent loss and an organ can never be repaired above what is left of it. Real death is the only thing that clears that.

The set

The set is fixed and its order is frozen into the save format: heart, left lung, right lung, liver, left kidney, right kidney, stomach, pancreas, spleen, intestines, bladder. Each one lives in a body region. The heart and both lungs sit in the thorax, everything else in the abdomen, and that is where a wound to it is routed from.

An organ carries one number that matters to everything else. Function runs from 1 down to 0, and it is condition divided by 100, except that a removed or ruptured organ reads 0 outright and a transplanted one is cut further by how far rejection has climbed. Every downstream handler reads that single fraction, which is why setting an organ's condition with a command runs the entire cascade below it.

The source states the design rule plainly, and it is worth knowing before you go looking for upside. An organ is only ever a liability. Health in one buys nothing. Every failure ends through a death channel that already existed before organs did - toxaemia into brain-death, hyperkalaemia into cardiac arrest - so an organ kills you only in a way you have already seen.

Tissue

Every organ carries two numbers that say what kind of tissue it is. Fibrosis is the fraction of an injury's depth that tissue keeps forever. The dawn step is how many condition points it can convalesce on a day that earned it, and 0 means it stays where it is for life.

• Heart: fibrosis 1.00, dawn step 0. Cardiac muscle does not divide. A heart scar is a heart scar for the rest of that life.
• Lungs: 0.85, step 6. The lining relines over days. The alveoli stay lost.
• Liver: 0.55, step 20. The fastest recovery in the body and the lowest fibrosis, which is why a survived episode heals back nearly whole.
• Kidneys: 0.90, step 5. The highest fibrosis of any organ and a mean recovery rate. Nephrons are fixed before birth and only ever fall.
• Stomach and intestines: 0.25, step 25. Mucosa is the fastest tissue in the body.
• Pancreas: 0.85, step 4.
• Spleen: 0.70, step 3.
• Bladder: 0.30, step 20.

Multiply fibrosis by 60 and the product is the deepest permanent mark that tissue can ever carry, which fixes the worst ceiling each organ can be driven to. A liver can never be capped below 67. A kidney can be capped as low as 46, a lung 49, and a heart 40.

The liver

Four things wear the liver, each at a rate per second per unit of the stressor: sustained Nocifen at 0.0016, radiation sickness at 0.0022, sepsis at 0.0030, and blood alcohol at 0.00015. The alcohol term is threshold-gated, so only the part of blood alcohol above 20 reaches the liver at all. That is just under one 400 mL bottle. A single drink grazes the organ and a habit is what scars it. All four rates diminish as the organ fails, scaling by 0.3 plus 0.7 times current function, so a wrecked liver gets worse slowly.

What a failing liver does is poison you. Toxaemia eases toward what the liver and kidneys cannot clear, rising at 10% of the remaining gap per second. Above 15 it tops up your nausea at 0.6 per point. Above 55 it starts eating your brain at 0.05 percent per second per point over the line, which is hepatic encephalopathy, and it ends at brain-death through the gate that already kills you.

Jaundice trails liver failure at 5% of the gap per second. It is bilirubin rather than an illness, and it yellows the skin where other players can see it. Anything applied to the skin runs straight past it.

A working liver clears toxaemia at 6 per second scaled by function. Clearance takes the lower of liver and renal function, so a pristine liver with dead kidneys leaves the blood dirty.

Nocifen level and blood alcohol are the pharmacology layer's own fields, read here unchanged, so the painkiller you take for a fracture and the drink you take for your mood both bill the same organ. Drugs and Pharmacology

The kidneys

There are two, and renal function is their mean, so losing one leaves about half capacity and that is survivable. Losing the second is a different kind of event.

Both take the same stressors independently. Thirst below 25 counts as dehydrated and wears them at 0.0022 per point below that line per second, which makes running dry the signature renal killer and one of the few organ failures that comes from neglect rather than from injury. Radiation adds 0.0020, sepsis 0.0026, and Nocifen 0.0011. The painkiller is nephrotoxic as well as hepatotoxic.

Serum potassium eases toward what the remaining renal capacity can excrete: 4.0 mmol/L healthy, 8.5 with no function at all, moving at 4.5% of the gap per second. That is hours, not seconds. Above 6.0 the heart's electrics destabilise and hyperkalaemia can seed fibrillation, with the odds reaching their cap at 8.0. Above 6.5 an existing fibrillation keeps climbing on its own, so untreated renal failure ends at the heart, through arrest.

Failed kidneys also feed the shared toxaemia channel by up to 12 points, standing in for metabolic acidosis.

The dialysis rig is the standing answer, and by design it buys time instead of curing anything. Worn and charged, it pulls toxaemia down 1.4 per second and potassium 0.09 per second toward 4.0, spending one charge of 150 per second of filtering. That is roughly two and a half minutes of battery. The organ itself is untouched.

Thirst is read straight out of the survival layer here - the same 0-100 bar that governs hydration is what sets the dehydration insult, so a run of days spent slightly dry is a renal problem before it is a thirst problem. Needs and Survival

The potassium number leaves this system entirely: CardiovascularHandler reads it every tick and seeds fibrillation off it, so renal failure arrives as a heart rhythm the circulation chapter owns. Blood and Circulation

The lungs

Mean lung function is a hard ceiling on respiratory drive. Pain, fever, adrenaline and panic all push respiration up, and the ceiling holds every one of them. It runs from 8 at no lung function to 100 at full, so one lung alone caps you near half. Survivable, permanently short of breath, and you will never sprint out of trouble again.

Chest wounds leave the lungs alone. Trunk trauma routes only to organs the sim actually models, and that list is the liver and the two kidneys. A round through the thorax gives you the internal-bleed channel and a wrecked chest wall instead.

Disease is what takes lung. Rot Lung floods a section, and a flooded section left undrained past its sixty-second window organises: 11 points come off both lungs as permanent loss rather than as damage. Surviving Rot Lung as a carrier leaves both lungs pinned at 82 with a matching permanent ceiling, and that scar is the only way anyone will ever tell a carrier from a clean survivor. Late-stage kuru aspiration takes 0.8 off both lungs each time it fires, alongside a sepsis bump.

Two datapack damage profiles also reach the lungs directly: dragon breath at 0.55 per point of damage to each, and wither at 0.10.

Every route into a lung is a disease route: ContagionHandler deposits the 11 points of permanent loss when a Rot Lung consolidation organises, and KuruHandler takes 0.8 off both lungs each time late-stage aspiration fires. Disease and Infection

The unread six

Be clear about this, because the body panel is not. The heart, stomach, pancreas, spleen, intestines and bladder have no consumer in the physiology. Their function is a number nothing reads. They hold state, they save and load, they sync to your client, they show on the status panel, and the WITNESS tablet raises findings on them. Every one of those is a display.

The spleen is the one with a real event attached. Landing on your side hard enough bursts it: past 9 blocks of residual core load on a side landing there is a 35% chance the spleen ruptures. Its function drops to 0 and it becomes excisable, which is the actual operation. The ruptured flag has exactly one reader, the saw, so a burst spleen sits there without bleeding you.

The heart is a special case for a different reason. Its dawn step is 0 and its fibrosis is 1.00, so if anything ever did drive its condition down, that loss would be exactly as permanent as it sounds. Nothing does.

Treat all six as substrate wired for a future the mod has not shipped. The WITNESS tablet will happily report an abdominal organ injury at under 50% and a cardiac organ failure at under 60%, and both findings are true readings of a value nothing acts on.

Routes in

There are four routes in.

Chemistry is the slow one, covered above: painkillers, radiation, sepsis, drink and thirst grinding the liver and kidneys down over minutes and hours.

Trauma is the fast one. A penetrating or crushing hit to the thorax or abdomen picks one organ homed in that region and wrecks it, drawing from the shortlist of organs whose failure the sim models, which is the liver and the two kidneys. The wound must be worth at least 4 after armour, and even then there is a 45% chance it finds an organ at all, because the trunk is mostly other tissue. What it finds loses 2.2 condition points per point of wound magnitude. Trauma stops at 22 on those organs, on purpose. A gut shot is meant to be a debt you have to manage, and an unavoidable death with no counterplay is the thing the floor was written to prevent.

Disease is the third, and it goes to the lungs.

The fourth is a datapack. A damage profile can carry a physiology block naming organs and a coefficient per point of damage, and the shipped file uses it for wither and dragon breath and for toxic magic, which takes 0.25 off the liver and 0.08 off each kidney per point.

The whole organ layer is gated behind enableOrgans, which is on by default.

Scarring

Each organ carries a second number beside its condition. Scar is a high-water mark of the worst state that organ has ever been in, and the most it can ever be repaired to again is 100 minus that scar.

The deposit is automatic and it happens inside the setter rather than at the injury sites, so every existing way of hurting an organ scars correctly and so will every future one. Only a decrease scars, which leaves restoration free of any mark. Only depth past 60 scars, so ordinary wear genuinely heals away: above 60 an organ is bruised, below it tissue is being destroyed. What gets deposited is the depth past that line multiplied by the organ's fibrosis.

Work an example. Drive a liver to 30 and it takes (60 - 30) x 0.55 = 16.5 of permanent loss, so it will never exceed 83.5 again. That figure is not a balance number. It is where living liver donors actually plateau. Drive a kidney to the same 30 and it takes 27, capping it at 73 forever, because kidneys do not do that.

Scar is clamped at 60 times fibrosis wherever it is written, including the additive deposits Rot Lung makes. That clamp is what stops four consolidations plus a carrier scar from stacking a lung into an unwinnable body.

The game displays this number nowhere. Not the status panel, not the WITNESS tablet, not the sync packet. The only signal you get is one action-bar line the day an organ finishes healing.

Real death hands you fresh organs. Condition goes back to 100, the scar clears, ruptures and removals clear, and a graft reverts to native tissue with no rejection. That is the one hard reset in the mod, and it is deliberate. The body is new, so its history goes with the old one.

A dimension change settles nothing. Organ state is explicitly copied across, scar included, so a portal hands you back exactly the body you walked in with.

The convalescence day clock and the insult flags also reset on death, so the first day back owes nothing to the life before it. The day you log in on pays nothing either: the first dawn tick after a login clears the flags and returns without paying a step.

Turning enableOrgans off restores every one of your organs to whole, scar included. Freezing them where they stand would be worse. A failed organ is a permanent multiplier on breathing, potassium and consciousness, and with the handler off nothing could ever repair it. Potassium and jaundice are read by the heart and the skin ungated, so a frozen kidney would be an untreatable heart attack. The day clock is zeroed too, so re-enabling the system starts fresh instead of paying out a free day for a period it was not running.

FRAGMENT 09-B - ONE LINE ABOUT A NUMBER YOU ARE NEVER SHOWN

SUMMARY: "Your liver has healed as far as it is going to." An action bar line, fired at a dawn boundary and at no other moment.

RESPONSE: It fires only for an organ that finished climbing to its ceiling that morning and that carries a scar above 0.01, and only for the first such organ in enum order. An organ healing cleanly back to 100 says nothing - the line used to fire there too, which told the player their liver would never recover further at the exact moment it had fully recovered.

FINAL NOTE: A body topping out five scarred organs on the same dawn shows one line and silently overwrites four. Scar is never put on the wire; the sync packet carries function as a 0-100 byte and the tablet carries the same. So this sentence is the only sight of the ceiling anywhere in the game, and it is gone in a few seconds.

~/body/OrganHandler.java:232-242; the sync path at network/DoomedNetwork.java:1097-1106

Convalescence

Recovery arrives all at once. It is granted at the dawn boundary, in a single step, and only for organs that earned it. The reasons are practical: a per-second rate would be multiplied by paceFactor while organ damage is not, so a fast server would heal the same wounds ten times over, and any rate slow enough to leave the chemical wear standing would be too slow to perceive.

At dawn the day that just ended is settled from flags accumulated across it. An organ is skipped if its dawn step is 0, if it is removed or ruptured, if it is a graft, or if its own insult bit was set at any point that day. Otherwise it gains its dawn step, multiplied by the organRegenMultiplier setting, up to its ceiling.

The insult flags are sampled every tick and settled at dawn. That matters more than anything else here. One tick of Nocifen at 05:59 costs the liver its whole day, and blood alcohol above 20 at any hour does the same. For the kidneys the flags are Nocifen and thirst under 25. Sepsis above 1 or radiation sickness above 1 blocks every organ in the body, systemically.

There is also a whole-body gate. Let tissue repair capacity drop under 0.55 at any point in the day and nothing knits at all. Repair capacity is food times energy times wasting: with energy at or above 60 and no wasting, hunger has to stay at roughly 30 or above all day, and a lower energy level raises that requirement sharply.

Setting organRegenMultiplier to 0 restores the pre-0.2.9 rule where organ damage was permanent for life.

Harvest

Organs come from two places, a crate or a body. A violent death scatters the trunk as a cadaver torso item, stamped with the moment of death, who it was, and what their own organs were worth. That last figure is the best condition among the donor's liver and kidneys, so a body that was failing before the saw arrived yields accordingly.

From the stamp the corpse is on a clock. Under two minutes it is still warm and can yield up to 90% quality. Under five, cooling, capped at 60%. Under ten, going grey, capped at 35%. Ten minutes is the end of it. Cold slows the clock and always leaves it running: a powered freezer takes it to 15% speed and an icebox to 35%, and the code holds a floor of 5% so a body can only ever be delayed.

Opening it needs the bone saw in your inventory and Intelligence 20, ten levels above the baseline every character starts at and past what any other content in the mod asks for. The procedure runs in three stages: open the trunk in one straight pass, press and hold each of three vessel stumps, then trace the ring around the organ while keeping the blade off it.

The yield multiplies four things and skips none of them: the corpse's freshness cap, your procedure score, your cleanliness (filth costs up to 60% at dirtiness 100), and the donor's own cap. A perfect extraction from a ten-minute corpse is still a marginal organ.

Your own remains are off limits, and a donor can be opened once every 30 real minutes. Doing it costs you happiness and nausea, and it costs the same to every player within 8 blocks who watches. Each act desensitises you by 10%. A harvest that yielded more than 15% teaches you 15 Intelligence XP. Butchery teaches nothing.

The moment it comes out, it starts dying. A donor organ has 600 real seconds of ambient life, which is ten minutes. That is a sprint rather than a shelf. Viability falls linearly across the window and the tooltip names the band it is in: fresh, fading, failing, almost gone, then DEAD.

The cold chain here works differently from the corpse's. A chest is not a hospital and gets no enclosed-container mercy at all. An icebox runs the clock at 20%, stretching ten minutes to fifty. A powered freezer runs it at zero and genuinely holds the organ indefinitely. It is the one thing in the harvest chain that stops time.

The number that matters when you install it is effective quality: the harvest quality the extraction earned, multiplied by how alive it still is. A 90% organ that has been carried around for five minutes is a 45% organ.

Organs found in a crate or bought from a trader carry no tags, so they read as a flat 55% preserved quality, and their clock starts the first time the server actually looks at them rather than retroactively. That figure was chosen against the harvest curve on purpose. A clean fresh extraction lands around 69% or better, so loot stays the fallback and never the ceiling. The tooltip shows you both numbers, and the displayed viability includes the time that has passed since anything last settled the stack, so a chest-aged organ reads its real age at you.

The act runs through seeCorpse(), the desensitisation model on DoomedData, so the happiness and nausea it costs the surgeon and every witness within 8 blocks are the mood system's numbers scaled by how many bodies that person has already opened. Psychology

The cold chain is machinery: a torso or an organ only gets the FREEZER_POWERED multiplier while the Freezer block entity actually has power, so an unpowered freezer stores a corpse at room rate. Machines, Power and Fluids

FRAGMENT 11-A - THE SAW'S FOUR REFUSALS

SUMMARY: The harvest packet can return one of four lines when nothing in your inventory can be opened, in the order it tests them: "That was YOU. Some doors stay shut." / "You have taken from this one too recently - the flesh remembers." / "Too long dead - whatever was in there is meat now." / "There is no body here to open."

RESPONSE: The server ranks every cadaver torso you carry by its freshness cap multiplied by what the donor's own liver and kidneys were still worth, then refuses only if none of them survived that pass. The wording explains why the whole bag failed rather than why one body did. An earlier version picked the freshest torso first and then refused it, with no way to choose the other one.

FINAL NOTE: The cooldown behind the second line is a map of donor UUID to game time, held for the server's lifetime. A restart forgives it. The line names no duration; the constant is 36000 ticks, which is thirty real minutes.

~/network/C2SHarvestOrganPacket.java:134-140, and the ranking loop at 96-133

FRAGMENT 13-C - TWO REFUSALS THAT SAY ALMOST THE SAME THING

SUMMARY: The client pre-check speaks a lang key, message.doomedmatu.transplant.none: "Nothing in there is failing badly enough to be worth replacing." The server commit speaks a hardcoded literal: "Nothing in there is failing badly enough to replace."

RESPONSE: They guard different lists. ClientHooks.canTransplant returns true for any organ under 65, all eleven of them; the server's worstFailing only ever looks at the liver, both kidneys and both lungs. A ruptured spleen therefore opens the theatre, and the refusal arrives after the abdomen has already been bled at the transplant rate.

FINAL NOTE: Only the client half has a translation key. A zh_cn client gets refused in Chinese before the surgery and in English after it. The excision messages are all translatable - but the organ name substituted into "%s - 取出。" comes from Organ.displayName(), which is hardcoded English, so a Chinese client reads "Left Kidney - 取出。"

~/client/ClientHooks.java:360-370, item/TransplantOrganItem.java:53-58 and 170-181, body/TreatmentService.java:1215-1218, assets/doomedmatu/lang/en_us.json:796-799, lang/zh_cn.json:782-785

The graft

Right-clicking a donor organ opens the theatre. It targets whichever of the liver, either kidney or either lung is worst, and only if that organ is below 65% function. Anything healthier than that is not worth the surgery.

This is the only procedure where the patient can die on the table. The abdomen is held open at roughly three and a half times the bleed of a prosthetic fit, up to a cap, and the old organ has to come out before the new one goes in. Four stages: open along the line, clamp all four vessels, seat the graft, sew each vessel back on. From the first clamp the clock is running, and courage buys no time off it. Your own blood volume sits on screen the whole time, and under 1.9 L the theatre closes itself. Being open adds 62 to that limb's pain target before sedation, scaled away entirely at sedation 70, which is why this is the procedure that makes a second player and a sedative worth having: the screen aborts below consciousness 12, so sedating yourself and then operating is out.

The graft lands between 48 and 88 condition depending on quality, where quality is your procedure score capped by the organ's effective quality. It clears the old tissue's scar outright, which is the only in-life reset there is. A botched join starts with up to 34 rejection already on the clock.

Rejection then climbs 0.055 per second forever, which fully rejects an organ in about half an hour. Lungs reject 2.4 times faster, so a lung graft is gone in under thirteen minutes. Immunosuppressants walk it back at 0.03 per second, and only 0.45 of that for a lung. Function is cut by up to 90% as rejection climbs, so a fully rejecting graft fails fast while still sitting there.

The drug is the trade. One dose covers ten minutes and costs 85 immunity for every tick of it, in a world with airborne plague, wound infection and sepsis. Doses set the timer rather than stacking it.

The immunosuppressant's 85-point immunity penalty is applied by InfectionHandler rather than by anything here, ungated by the organ switch, so the cost of keeping a graft is paid entirely inside the infection system. Disease and Infection

Excision

Crouch and right-click with the bone saw and it takes out the organ most worth losing. There is no minigame. You are opening your own abdomen with a bone saw, and the price is the point.

Three things can be excised: either kidney, or the spleen. The liver is deliberately absent from that list and always will be, since it has no pair and no substitute, so the knife refuses it. The mod hands out no unavoidable deaths and it will not let you give yourself one either. The saw also refuses to take a second kidney once the first is gone.

An organ only qualifies if it is a graft that has passed 25 rejection, or if it is ruptured. A merely damaged kidney is not a candidate, and the message you get says as much. A rejecting graft outranks a rupture, because rejection is the one failure that keeps getting worse on its own.

It costs a litre of blood, 85 pain, 45 pain-shock, and an abdomen left open at 55 skin damage with 0.45 bleed and 30 infection seeded, which is a real wound that will go septic if you leave it. Below 2.6 L of blood the saw refuses outright, because opening yourself up at that point is just suicide.

What you are left with is zero function on that organ and a rejection clock that has stopped. That is not a cure. For a kidney the survivor carries you at about half capacity while you go and find another donor.

What the saw leaves is an ordinary abdominal wound in the injury system - 55 skin damage, 0.45 bleed and 30 infection seeded, with a CaseNotes INFECTED entry filed - so the aftercare is the same antisepsis and dressing as any other open belly. Injury and Treatment

SUBJ-04

Injury and Treatment

Every injury in Doomed is stored per body region and treated per body region, through the paper-doll panel. A wound is not a number that ticks down on its own: bleeding, deep tears, embedded objects, burns, cold injury and infection all interact, and several of them silently switch each other off. This page covers what each treatment actually does to the numbers, what the thresholds are, and which of them the game never tells you about.

Storage

Every region carries one set of aggregate values - skin health, muscle health, bone state, external bleed, internal bleed, pain, infection, burn, frostbite - plus up to four individual wound records. The records are the real injuries: a laceration, a gunshot entry, an amputation stump. The aggregates are a projection summed back out of them.

That distinction decides what a treatment has to touch. A value written straight onto the region survives only until the next time that region is touched, when the projection rebuilds the aggregate by summing the records again. Every treatment that means to change a bleed permanently changes the record instead. It is why a coagulant that only lowered the region's number appeared to do nothing.

A fifth wound landing on a region that already holds four merges into the nearest compatible record rather than opening its own. A limb opened eleven times reads as a small number of wounds carrying the accumulated damage.

Skin health caps how much a region can bleed. The ceiling is 100 minus skin, so a region at 80 skin holds at most 20 bleed units, and as skin knits back the ceiling tightens and squeezes the bleed down with it. Muscle health is capped at 50 while the bone is fractured. A missing region is made completely inert - pain, infection, wound records and lodged objects are all cleared off it. A limb that is gone stops simulating anything at all.

Clotting

External bleed is measured in source units. Each unit of summed, unmasked bleed drains roughly 0.015 litres per minute of blood, and a full body holds about 5 litres.

Natural clotting is slow on purpose. A small bleed at or under 2 units clots at 0.050 units per second. A serious bleed at or above 8 units clots at 0.017, and the middle blends between them. At that rate a serious untreated wound stays open long enough to kill you. The figure was deliberately lowered from a faster one that made a single wound survivable forever.

Several modifiers scale clotting at once. Venom is an anticoagulant and reduces clotting to zero at venom 20. Nocifen, the non-opioid painkiller, thins the blood and drags clotting down with it, so a medicated wound bleeds longer. Cold below 35 C degrades clotting on a straight line to 60 percent at 30 C. The comfortable temperature band buys a small 8 percent bonus instead, and the two can never both apply.

An embedded fragment suspends clotting entirely. Not slows - suspends. A wound with shrapnel in it weeps until the fragment comes out, however long you wait and whatever you wrap over it.

Blood loss also tapers as the body empties. Below 0.75 litres the flow rate falls toward zero, because there is nothing left to lose. The wound is unchanged and still reads as open.

Internal bleeding is a separate channel measured directly in litres per minute, and no dressing reaches it. Procoagulant works anywhere. Regenex is thoracic only.

The field answer with no drugs at all is holding still. While a body is genuinely not moving, an internal bleed clots at 0.0025 units per second. Crouching counts as deliberate pressure and multiplies that by 1.7. Being unconscious on the floor counts too, which is why dragging a downed friend somewhere quiet is worth doing. Any real locomotion stops it outright, and so does sprinting or swinging.

Adrenaline suppresses it, scaling down to a floor of 30 percent, so a frightened body clots badly. A moderate internal bleed is minutes of doing nothing in a game that will not pause for you, and it is far too slow to outrun a serious haemorrhage. An embedded fragment suspends internal clotting the same way it suspends external clotting.

Direct pressure is the bare-handed answer to an external bleed. Both hands empty, kneeling on the wound. It multiplies the region's flow by 0.35 while held, and floors at 0.7 on a deep wound, because a hand cannot close an artery. It masks flow exactly like a tourniquet: the stored wound is untouched, you are standing on the hose.

Pressure costs stamina at sprint rate. Below 0.5 stamina it stops helping and starts grinding the raw tissue instead, pushing that region's pain toward 60. Ten seconds of real pressing banks a full release credit, which then drains back to open flow over 20 seconds. A tap banks nothing. You get one benefit slot: one pair of hands, one wound.

The cold clotting penalty reads the same core temperature the survival layer drives, and wet clothing on a frozen peak settles that near 26 C - far under the 30 C floor, so clotting sits at 60 percent for as long as you stay up there. Needs and Survival

Closure

Once a region's bleed reaches 20 units the wound is promoted to deep, and any earlier stitch bookkeeping is thrown away. It is a new tear and it needs treating again. Some wound types are deep on creation however hard they are bleeding: an avulsion, an amputation stump, a gunshot entry or exit. A laceration, puncture or bite is deep only if the tract went at least 75 percent of the way into the tissue.

A bandage does not close a deep wound. A full wrap staunches it to zero bleed and arms a 3-minute countdown. When that expires the wound weeps again, back up to the deep-wound threshold or whatever the open skin can sustain, announced by a wet squelch and the moodle returning. Until it is properly closed, the flesh knits at one fifth of normal speed.

Four things close a wound for good. A clean suture is the best close in the game. A wound stapler does it instantly with no minigame, at a rougher skin restore and a sharper pain spike. Cauterisation welds it shut under a held flame. And a botched suture does not close it at all.

That last one is worth reading twice. The stitching minigame scores from 0 to 1 on the entry knots, the exits and the line of the thread. At 0.55 or better the wound is shut for good and the bleed stops dead. Under 0.55 the thread tears through the edges: the suture is spent, the skin knits a little, the bleed is pinched, and the wound is still deep and still unstitched. It is measurably worse than a staple.

FRAGMENT 03-B - PINCHED, NOT CLOSED

SUMMARY: The message the server sends when a stitch on a deep wound scores under 0.55. Recovered because it is the only notice a player gets that the closure failed.

RESPONSE: "You stitch the deep wound in the Left Forearm, but the thread tears through the edges. It is pinched, not closed." The clean version, for comparison: "You stitch the deep wound in the Left Forearm neatly closed; it will heal properly now."

FINAL NOTE: The line names the failure and withholds the number. The wound is left in the exact state a bandage leaves - deep, unstitched, three minutes on the reopen countdown - and the suture item is gone. The clinical record writes no closure for it, correctly, since nothing was closed.

~/body/TreatmentService.java, applyLimbMed case SUTURE, the botch branch around line 930.

Dressings

Every dressing goes on through the same wrap minigame and carries its own potency, all of it scaled by how much of the wrap was completed. A wrap of 0.9 or better staunches the bleed to zero outright. Below that the bleed is multiplied toward the dressing's floor.

The plain bandage restores 30 skin and cuts bleeding to 10 percent at a full wrap. The adhesive bandage is nearly useless on a real wound. The ripped dressing is improvised cloth with modest bleed control and real pain relief. The sterilized bandage adds a 45-second antiseptic window. Analgesic gauze kills limb pain hard and pushes a systemic opiate dose in with it, which matters on an already medicated body. The plastic dressing is an occlusive seal with near-total bleed control. Alginate is the best wrap available: full skin restore, all but stops the bleed, and a 60-second disinfect window.

The two herbal dressings are early-game and stay early-game. The herbal poultice halves bleeding. The bittermoss wash barely wraps at all, but carries a 90-second disinfect window, which is the early answer to an infection.

Dressings are durable rather than consumed. Each carries a condition pool, and a full wrap costs 56 points on a large region, 40 on a medium one, and 28 on a small one. A partial wrap costs proportionally less, with a floor of one point. When the pool runs out the dressing is gone.

An antiseptic dressing used on an infected region with no open wound performs a wash instead: the disinfect window alone, with no minigame and no gauze left behind, at a flat cost of 4 condition. That exists because an infection outlives the wound that started it, and refusing to treat one on closed skin used to strand people.

A completed wrap stays visible on the body for 2 to 10 minutes depending on how complete it was.

Analgesic gauze writes its 28 points straight into the systemic opiate level, so a wrap counts toward tolerance and stacks on top of anything already injected. Drugs and Pharmacology

The bittermoss wash starts as worldgen: bittermoss scatters in cold biomes, harvests double with the foraging knife, and has to be ground to pulp before it is a dressing at all. Items, World and Trade

The strap

A tourniquet goes on a non-vital arm or leg segment and stops all blood loss from that segment and everything below it, instantly. The wound's stored bleed is unchanged. Only its contribution to blood loss is masked, and the mask walks the whole chain downward from the anchor.

Applying one spends a single point of the strap's eight and consumes the strap itself, which now lives only as the stored condition on the limb. Removing it hands the strap back at that condition. A strap that reached zero returns nothing.

The strap then starts a clock, and the clock is the whole mechanic. The anchor segment's pain ramps at 2 per second up to a cap of 40. At 540 seconds, nine minutes, every cut-off segment starts losing muscle at 2 per second. A starved segment that drops below 5 muscle has its infection floored at 10 and turns septic.

At 840 seconds, fourteen minutes, the limb is simply gone. It comes off through the necrotic loss path, so the stump is dry - tissue that died on the body does not gush like a saw cut. That leaves five full minutes after necrosis visibly begins in which taking the strap off still saves the limb, on top of the nine before it starts. You have to ignore it to lose it.

A tourniquet on a limb that is later blown off falls away with it.

Splints

A fractured segment produces no useful force worth the name until it heals, and it caps that segment's usable muscle at 50. On a hand-chain segment, an unsplinted fracture multiplies that link's function by 0.38, and splinting it raises that to 0.58. A dislocated or unstable joint in the region multiplies by a further 0.42, and pain scales the whole thing by 1 minus pain over 145, floored at 0.3.

Splinting is a two-stage minigame with two opposed failure modes. Stage one is traction: the distal fragment is hauled back into line, and the score is how collinear it is at the moment of commitment. Your own pain tremble is directly in the way, so setting a bone while you are wrecked genuinely sets it worse. Stage two is tension: the strap tightens toward a target band between 0.55 and 0.78 on the gauge.

Alignment scales the brace's durability between 35 percent and 100 percent, and scales how much seating it hurts. A slack brace keeps 30 percent of that durability and will not hold.

A splint sheds 0.02 durability per tick, so a perfectly aligned brace lasts about four and a quarter minutes. A splinted fracture mends in 75 seconds of pace time. An unsplinted one still knits on its own, over about 30 minutes. Progress made under a brace survives the brace wearing out.

The bone welding tool is the brutal shortcut. It mends a fracture instantly at the cost of 30 pain, 25 skin, 26 muscle and a fresh 5 units of bleed, and it has four uses.

Foreign bodies

Anything embedded in a region blocks all natural healing there and suspends clotting, so the wound weeps until it comes out.

Shrapnel is the simpler case. Fragments come out bare-handed or with tweezers, and the panel refuses either while that region's pain is at 60 or above - numb it first. A clean pull costs nothing. A slip tears the wound for 5 skin, 12 pain and a unit of bleed, and on the head it takes a little brain with it four times out of five.

A whole arrow is different. It is barbed, and it has a depth: how far through that region's meat it sits, rolled on the hit. About a quarter of hits sit barely in, a third are buried halfway, a quarter are buried deep, and the rest go through-and-through with the head out the far side. The extraction screen draws the region as a cross-section to its real thickness, so a forearm is a thin slab and the torso is a deep one.

Removal is entirely manual. You wiggle an end off, or push the shaft through, or pull it back, and each has its own price. Snapping the shaft flush is the cheap, safe move, and it leaves the barbed head in you as a fragment to dig out later. Drawing the shaft out after a snap, or a shallow straight pull, removes it for a moderate cost. Hauling the whole barbed arrow back out rakes the channel on the way, and the deeper it sat the worse the rake. Botching a pull-back means the barbs catch, the arrow stays, and it lodges deeper.

A vital core region - chest, gut, neck, head - has no safe route out at all. Driving the head out through what is behind it is near-fatal, and the shattered head stays lodged anyway. Even a clean pull from a core region drags a shaft through organs and adds internal bleeding. Snap the shaft flush and live with the head.

While an arrow stays in, using the pierced anatomy jostles the tract. Mining, swinging and hard landings each roll for a jolt of pain at most once every four seconds, and much more rarely reopen some bleeding.

The panel will not offer a fragment pull while that region's pain is 60 or above, so an analgesic or an ice pack is a prerequisite for the extraction rather than a comfort alongside it. Pain, Consciousness and Death

Burns

A burn is tracked per region as a percentage, built at 6 points per point of fire damage. It does not bleed. It festers and leaks instead.

Any burn above 40 on a region will infect it, seeded at 8, unless an antiseptic window is already open there. Burns also ache: the resting pain target carries 0.6 pain per point of burn, which means painkillers can actually ease it.

The dangerous part is area. Once total burn across all regions passes 120, plasma starts leaking and blood volume falls. That loss scales with how much of the body is burned, reaching four times the base rate at a total of 400. This is burn shock, and it is what kills people who stand in lava rather than the damage itself. Treat it with blood or saline, not with a bandage.

Burns recover on their own at 0.15 per second, which is slow. Burn gel is the real answer: it takes 60 points off the burn, halves that region's pain, restores 25 skin and lays down a 5-minute antiseptic window so the burn does not fester. Aloe gel is the gentle version - 25 points off, pain to three quarters, 10 skin back - and it is deliberately weaker. It is comfort, not a cure.

A burn treated to zero leaves no scar.

Cauterisation deserves its own note here, because it is a burn you inflict on yourself. A sustained flame pressed to a bleeding wound stops the bleed dead and crudely welds a deep wound closed with no thread needed. It costs 30 burn, 45 pain, and a 40 percent chance the wound festers at an infection of 20. A spark does not count - flint and steel is excluded, while a torch, campfire or lantern is not.

Frostbite only accrues below a core temperature of 31 C. That is genuine deep hypothermia, well past ordinary cold. It thaws above 35.5 C.

Only limbs freeze, and they freeze on a gradient from the warm core outward. Hands and feet accrue at full rate. Forearms and shins accrue at 0.6. Upper arms and thighs at 0.35. The head, neck, eyes, chest and abdomen never frostbite at all. How far below 31 C the core has fallen scales the rate further.

Thawing runs the other way: proximal segments thaw fastest, so the cold recedes outward and the tips are last to come back. A heat pack floods the core with 5 C of warmth and pulls frostbite off every affected limb, most from the proximal ones.

At 85 percent frostbite the tissue starts dying, at 1.2 skin and 0.8 muscle per second. That same threshold blocks all natural healing on the segment, so it cannot regrow what is being destroyed. Below that threshold, a thawed segment regrows normally.

If a segment reaches 99 percent frostbite with both skin and muscle at or under 1, it is lost. It and everything distal to it come off together and splat free, with a dry stump - frozen black tissue does not gush like a saw cut. There is no warning text. The doll, the moodles and the stump are the notification.

Frostbite also makes bone brittle. A frozen segment keeps 55 percent of its tolerance in a fall.

Burn shock is a blood problem wearing a burn's clothes: it drains volume directly at up to 0.04 litres per second with no bleed unit anywhere in the arithmetic, so it answers to transfusion and saline and ignores every dressing in your pack. Blood and Circulation

Body traits scale the freezing before anything else touches it - WARM_BLOODED multiplies frostbite accrual by 0.6 and POOR_CIRCULATION by 1.6 - so two characters standing in the same storm lose their hands on different clocks. Transformation

FRAGMENT 06-A - THE STRAP, PAGE FOUR

SUMMARY: A field journal page recovered on a body, filed under BODY, titled "The strap". Three earlier pages track the same tourniquet going on, biting, and coming off. The fourth page unlocks only on a specific event, and the reader had reached it.

RESPONSE: The page reads: "The strap came away with it. There was hardly any blood. The place where the limb ended looked dry, dark and old, as if it had been dead much longer than the rest of me knew." The server's own line at that instant is shorter: "The strap was on too long. There was nothing under it left to save."

FINAL NOTE: Page four is gated on the loss actually happening. A player who takes the strap off in time owns pages one through three and will never see the fourth. The dryness in the writing is mechanical - necrotic loss seals the stump as it kills, so nothing gushes.

res/data/doomedmatu/doomed_journal_entries/the_strap.json, page 4; the action-bar line and the page-3 unlock both fire from ~/body/TourniquetHandler.java at 840 seconds.

Infection

A region can only become infected once its skin drops below 80. From then on it rolls to start an infection every 40 seconds, at a chance set by your immunity, the wound's own contamination, and whether anything is still lodged in it. Once the infection flag is set, the percentage climbs on a curve driven by immunity. Clear the percentage to zero and the flag clears with it.

An antiseptic window is the source-control treatment. While one is open the infection regresses instead of progressing, at roughly 8.6 percent per minute at typical immunity. A pour of proper antiseptic opens a 10-minute window and strips 55 contamination and 18 infection off the wound record directly. Iodine gives 8 minutes. Antiseptic mush gives 5, plus 4 minutes on the segment above it, and stings for 10 pain. Bittermoss wash gives 90 seconds, which is the early-game answer and is meant to stay one.

Antibiotics are systemic and slower, stripping about 7 percent per minute off every infected region while a course runs. Repeated courses build resistance, which halves their effect at 40 and decays only while you are off them. Using a topical and a course together is properly strong, because that is the correct medical answer.

Past 75 percent infection the wound rots. It eats muscle at 0.05 per second, and - this is the part that catches people - the region stops healing entirely. Skin does not knit back over a rotting wound. Before that rule existed, a fed player's regeneration outran the rot and infection could never actually damage anything. Above 90 percent it can seed a neighbouring region.

Any invasive procedure done with a filthy body contaminates the wound just manipulated. It starts at dirtiness 35 and rises to an 8 percent infection chance at maximum grime. An existing disinfect window removes 90 percent of that risk.

Crafted liquids reach the wound record through the same disinfect call the bottled antiseptic uses: a 100 mL pour of alcohol strips 22 contamination and buys 350 seconds of cover, while bleach strips 44, grants no window at all, and charges 20 skin and 15 muscle for the privilege. Reagents and Routes

Amputation

Only the arm and leg chains can be amputated. Cutting a segment takes it and everything below it, and leaves an open stump on the segment above. Cutting the upper arm takes the forearm and hand with it, and the stump lands on the chest.

The cut needs something that goes through bone. A bone saw anywhere in your pack is the clean cut and the numbers the system was tuned around. An axe works and charges you for it: nearly double the immediate blood loss, nearly double the muscle taken off the stump, a third more pain and trauma, and 55 extra contamination on the stump wound with the surgical disinfect wiped. The saw is worth carrying.

The cut itself is not a checklist item. Each amputation dumps 0.35 litres of blood on the spot with a saw, adrenaline floors at 60, and a motor shock of 30 slams through you, which is above the collapse line. Doing all four in a row means repeated collapses and a stacking blood deficit.

Then the stump. It takes skin to zero, 50 muscle off, pain to 100, and it bleeds at the full rate. An open amputation channel is worth 60 bleed units, which the conversion turns into roughly 0.9 litres per minute. Exactly three things close it: a tourniquet anywhere proximal, dressing or cauterising the open stump wound on the parent segment, or fitting a prosthetic whose socket seals it. Without one of those, an unbandaged amputee exsanguinates.

Sawing your own neck takes the head off. There is no confirmation and no minigame.

A violent death bursts the body apart. Each arm and leg is flung free as a harvestable severed piece, and any fitted prosthetic drops as its own item carrying the wear it had.

The Deep Maw calls the same dismember path a saw does, so a limb it tears off opens the identical 60-unit stump channel and shuts through the same three exits. Threats

Prosthetics

A prosthetic seats on the stump, meaning the highest missing segment of that limb, and fills every missing segment below it. Fitting to a lower portion while the segment above is also gone is impossible; the game walks the fit up to the real stump.

A stump has to be ready. It must be healed to at least 65 percent, bleeding at 8 or less, infected at 5 or less, with systemic sepsis under 8. Stump healing runs at 0.13 per second, gated by nutrition and immunity, and only while the stump is stable.

Three tiers. Improvised restores 45 percent of limb function, mechanical 88 percent, titanium 98 percent. None of them beat healthy tissue at everything. Fitting is a real operation: improvised is two stages, mechanical adds a bolt ring that must be brought up in a star pattern, and titanium adds a nerve weave held at each junction. The stump bleeds on the server's clock the whole time the screen is open, so a titanium fit genuinely costs blood an improvised one does not.

Effective function is the tier's ceiling scaled by condition rather than the tier alone. At zero condition a fitted limb is dead weight at 10 percent of its tier. Fit quality can only take away from what the item was worth - a perfect operation cannot make a scavenged limb better than it is - and it floors at 45 percent of the item's condition.

Prosthetics wear instead of healing. Idle wear is 0.012 per second always. A prosthetic leg loses 0.060 per second while you move; a prosthetic arm loses 0.050 per second while swinging. Tier changes the appetite: mechanical is the reliable workhorse at 1.0, improvised is crude at 1.4, and titanium's neuromechanics are the thirstiest at 1.6. Combat impacts batter one fitted segment at a time, and there the expensive tiers resist better.

Upkeep is two-tier. Prosthetic lubricant is a right-click that puts 40 condition back into every running prosthetic at once, and refuses a seized one. A seized limb needs a wrench plus tier-appropriate material - leather, an iron ingot, or netherite scrap - which restores it to 100.

Missing tissue itself feels nothing, but the flesh the hardware is seated in does. A poor fit adds up to 24 socket irritation immediately, and movement grinds more in depending on fit quality, how immature the stump is and how worn the limb has become. Resting eases it. Phantom pain runs on its own clock with episodes of 12 to 40 seconds, and adaptation and mirror therapy lower the frequency without ever curing it.

The fitting gate reads whole-body sepsis rather than the stump alone and refuses above 8, so an infection anywhere else in you blocks the operation. Disease and Infection

Treating others

Right-click a Doomed player while holding the right item and a treatment starts on them. The item comes from your inventory and the feedback comes to you; their body is what gets treated and re-synced. You have to be within 6 blocks with line of sight, and awake enough to work.

The division is strict and it is the point. Your own hand does the minigame, with your own pain tremble and your own cursor lag. Their body takes the result. A steady medic gets a clean stitch on a wrecked patient.

Self-treatment stays open for 9 seconds after you pass out. That grace exists so fumbling the AED onto your own chest as you black out still lands. Treating yourself deep into an arrest you have been in for the better part of a minute does not. Another player treating you is untouched by that limit, which is exactly why the window can afford to be short.

Some cross-player treatments ask first, because they can hurt: applying or removing a tourniquet, disinfecting, chest drains, limb meds and amputation. The ask lasts 4 seconds. Crouching after the ask refuses it instantly and locks that healer out for 30 seconds. Silence is only consent if the patient actually holds still for most of the window - fleeing or fighting is not a yes. A patient who cannot answer gets implied consent, because an unconscious femoral bleed is the reason the cross-player tourniquet exists.

Implied consent has teeth. Nobody pulls someone else's strap while what it is holding back would gush; the check measures the whole masked chain including the amputation channel, and refuses above 5 bleed units. A patient who genuinely wants a gushing strap off can do it themselves - their own click has no gate. An ice pack is refused on an unconscious patient, because stacked cold on a body that cannot say enough walks core temperature into arrest. Iodine and antiseptic mush are refused on an unconscious patient whose region pain is already 55 or above.

Amputating another player needs the limb selected on a WITNESS scan first, so nobody amputates by walking into a friend with an axe. A limb that is already lost - deep frostbite at 80, infection at 75, or skin and muscle both at 4 or under - can be taken from a patient who cannot answer, because that is the case the feature exists for. A limb that could still be saved needs them awake and consenting.

Organ installation rides this same router on the same quality channel, so anhedonia degrades a graft you perform on yourself exactly as it degrades a wrap - but INSTALL_ORGAN sits outside the consent group, so putting an organ into another player asks them nothing first. Organs

Past anhedonia 80 nobody sitting with you can land any of it, and the clinical record keeps a line for that alone: "Nothing got through." Psychology

FRAGMENT 12-C - THE ENTRY FOR A LIMB

SUMMARY: What the death certificate writes when a limb comes off. One entry per kind of event rather than per occurrence, so four amputations produce one line and the number four.

RESPONSE: The template is "%s gone." Formatted, that is the whole entry: "Left Foot gone." Chat gets more words than the record does, because any dismemberment grants the advancement "'Tis But a Scratch - Lose a limb and keep walking", and that one announces.

FINAL NOTE: The saw, the axe, an explosion, the Deep Maw's teeth, the strap left on too long and deep cold all write the same two words. The certificate cannot distinguish a limb you cut off from one that died on you. The advancement is withheld if death is already pending, on the grounds that dying with it does not count.

~/body/ClinicalKind.java:30 for the template; the four write sites are in DismemberService.java (amputate, dismember, necroticLoss, the co-op path); res/data/doomedmatu/advancements/limb_lost.json for the chat line.

SUBJ-05

Disease and Infection

Doomed splits "getting sick" into two separate machines. One is wound infection: a real, per-limb number that climbs on open skin, eats muscle, spreads to neighbouring parts, and ends in sepsis. The other is contagion: four named pathogens with silent incubation periods, person-to-person spread, and specific medicines that only work on the right agent. Both read the same whole-body immunity score, which is built out of food, water, warmth, blood volume and how filthy you are. Radiation sits alongside them as a third clock that only ever counts down, but poisons everything else while it runs.

The switches

Two server config options sit under everything in this document. enableInfection owns wound infection, sepsis, immunity and the antibiotic window. enableContagion owns the four named diseases and kuru. Contagion rides on the infection substrate, so switching infection off takes the disease layer with it.

The values are not frozen when a switch goes off. A frozen sepsis score would be unkillable, and a frozen infected limb would read INFECTED forever with nothing able to heal it. So the disabling code scrubs state actively, every tick. Infection off zeroes sepsis, the rigor, every limb's infection and disinfect window, the antibiotic course and the resistance it taught, and pins immunity to its default. Contagion off clears every pathogen load, timer and peak, clears carriage, wipes the Rot Lung consolidation record, and cures kuru outright rather than pausing it.

One thing survives both switches. Acquired immunity to a pathogen already beaten counts as player progress rather than residue, so it sits inert while the layer is off and is still there when it comes back on.

Radiation has its own switch, enableRadiation. Turning it off clears the dose.

Immunity

Immunity is recomputed from scratch every tick on a 0 to 200 scale. It is a live readout of how well the body is being kept.

The build starts at 100. Hunger above 70 adds up to 10 more, and hunger below that subtracts at 0.75 per point down to a floor of -75. Thirst contributes 0.3 per point above 60, so a fully hydrated character is worth +12. Body temperature is worth 8 points per degree away from 37 C in either direction. Blood volume is worth 4 points per litre away from a full 5 L, so bleeding out costs 20. Filth past 50 subtracts one for one. Nausea subtracts at 0.8 per point and radiation at 0.5 per point. Low energy costs 0.45 per point below 60, and sustained wasting costs 0.40 per point of weight offset past -10.

Do the arithmetic on a perfectly maintained body with no traits and no drugs and it lands around 122. 120 is the break-even at which a body starts beating a named disease on its own. Two points of headroom. The Strong Gut trait adds 18 and Sickly subtracts 20, so trait choice is the difference between comfortably clearing diseases and never clearing one.

An antibiotic course adds a flat 70. An immunosuppressant, the only thing holding a transplanted organ back from rejection, subtracts 85.

Every term in that build except the drugs is read straight out of the survival loop: hunger, thirst, core temperature, blood volume and accumulated filth are the same fields the needs system writes each tick, so letting any one of them slip is a disease decision as much as a survival one. Needs and Survival

Wound infection

Any undismembered limb whose skin health is under 80 runs a hidden infection roll once every 40 seconds. Prosthetic and missing segments are skipped, having no flesh to fester.

The base odds come from how open the wound is, and active bleeding pushes them up. At skin 79 the raw chance is under half a percent per roll. At skin 0 it is 23 percent. That figure is then multiplied by the wound's own contamination risk, which is where the variance lives. A wound starts at 0.65 and gains contamination over 55. A bite adds 0.9, a puncture or crush 0.45, an avulsion or stump 0.7, and retained fragments 0.18 each up to 0.8. A definitively closed wound multiplies the whole thing by 0.35 and a dressed one by 0.48. Grime transfers into the record on every roll, scaled by dirtiness past 25, and an active antiseptic cuts that transfer to a tenth.

Once a limb is infected the percentage moves at a rate read off an immunity curve. The normal column runs from 18 percent per minute at zero immunity down to 1.08 at 195, turning negative only past 195. Read that plainly: untreated, an established infection essentially never heals. Even a perfectly maintained body at immunity 122 is still gaining about 6.4 percent a minute.

A topical antiseptic flips the limb onto the disinfected column, which is negative from immunity 40 upward. That is source control and it is the reliable answer. Antibiotics work differently, stripping a flat 7 percent per minute off every infected limb at once, divided by a resistance term, on top of the curve. Net that is about -4 per minute, so a ten minute course removes roughly 40 percent and a bad infection needs two.

Above 75 percent the infection eats muscle at 0.05 per second. Above 90 it rolls 2 percent per second to seed a random anatomical neighbour at 5 percent. An infected limb also raises the temperature the body regulates toward. That is where fever comes from.

The contamination number the onset roll multiplies by belongs to the wound ledger rather than to this system, along with the closed and dressed multipliers, so how a wound was handled in the minute it was opened is what decides whether it turns hours later. Injury and Treatment

Sepsis

Sepsis is driven by the TOTAL infection summed across every limb, not by the worst one. At or above a total of 100 it climbs at total x 0.00028 per second. Below that it falls at 0.07 per second. One limb at a full 100 is enough to start it. A single neglected wound goes systemic on its own.

Above sepsis 20 the body begins to fit. A rigor is a violent whole-body convulsion in three parts: a three second prodrome that is the warning, a five second peak you cannot act through, and a four second climb-down. The prodrome is identical every time, so it becomes something to react to.

The gap between fits is the instrument. It tightens from four minutes at onset down to twenty-five seconds by sepsis 95, with plus or minus 15 percent of jitter over the top, so the countdown can never be timed exactly. During a fit above 0.6 strength sprinting is gone, top speed is cut by up to 45 percent, and pain rises by up to 18. Convulsing also burns energy and dumps heat.

Past sepsis 78 the fever setpoint inverts. The thermostat stops regulating warm and starts regulating cold, down to 3.2 degrees below neutral at sepsis 100. At almost the same point the fits collapse toward a trace shudder. The shaking stopping and the fever breaking both feel like recovery. Neither is.

Sepsis above 60 counts a body as failing rather than merely unconscious, which qualifies it for the agonal brain drain that ends in brain death.

Sepsis is also a circulatory event: CardiovascularHandler drops the pressure target by 0.4 mmHg for every point of it and multiplies cardiac output by one minus sepsis times 0.00525, so a body at sepsis 100 is perfusing at under half output before anything else has gone wrong. Blood and Circulation

The four agents

Contagion is a fixed set of four agents, each carrying its own incubation, transmission weights, virulence and cure. The set is entirely a cost. Its one reward is surviving Marrow Fever, which grants permanent immunity to Marrow Fever and to that alone.

Marrow Fever is the bacterial baseline. It incubates for two minutes, cures to antibiotics, immunises on recovery, and its symptom is pushing sepsis directly. It is the disease the system is learned on.

Rot Lung is the viral one and the worst. It incubates for three minutes, spreads hardest through the air, and answers only to an antiviral. Antibiotics do nothing at all to it. A third of survivors keep shedding it silently for the rest of their life.

Kuru is a prion. It runs its own clock instead of an incubation entry in the table, and its cure entry is NONE. It enters one way: eating human flesh.

Marrow Worm is a parasite with a five minute incubation. It cures to an antiparasitic. Its damage is indirect. It steals food and weight while the body's defences sag.

Load runs 0 to 100 in all cases. Above 75 the fever costs brain at 0.06 per second regardless of which disease it is, and mood falls the whole time.

Incubation

When a pathogen is seeded, load is set to 1 and a timer starts. Until that timer passes the incubation length, nothing happens at all. No symptom, no moodle, no sound, no chat message. The server withholds the load even from the infected player's own client during incubation, so there is no packet to read and nothing a modified client could surface. That silence is the mechanic.

After incubation, load moves once per second against a judged immunity figure. With a correct medicine in the blood, load falls at 1.6 per second, which clears a full-strength disease in about a minute. At judged immunity 120 or above, load falls at up to 0.30 per second, scaled by how far past 120 it sits. Below 120, load climbs at 0.45 x virulence x how far short it falls.

The practical consequence of that ceiling matters. A maintained body sits around 122, two points past break-even, so natural clearance runs at roughly 0.0075 per second. Beating a full-strength disease that way takes several hours. Medicine is the realistic exit.

There is a subtlety that keeps the whole thing from sealing shut. A running disease pins nausea to a floor of severity x 60, and nausea drags immunity at 0.8 per point. Left uncorrected, a pathogen would suppress the very score deciding whether it clears. So when judging a pathogen the handler adds back exactly the nausea that pathogen is itself causing. Nausea from anything else, such as overeating or filth, still counts against you.

Above load 45 the infected cough audibly every 3.5 seconds and throw sneeze particles. An ill person is legible across a room.

When a load reaches zero the disease resolves, and the payout depends on how bad it actually got. The handler tracks the highest load the pathogen ever reached this life. A peak under 25 pays nothing: no immunity, no carrier roll, nothing. A subclinical brush cured within a second of it incubating does not count as having survived anything.

If the peak did reach 25, and the pathogen immunises, that character is permanently immune to that one agent. The flag survives death. It is the only reward in the disease layer.

Then the carrier roll happens. Marrow Fever carries a 5 percent chance, Marrow Worm 10 percent, and Rot Lung 33 percent. A carrier has no symptoms of any kind, ever. They shed at a steady 0.35 strength forever, which is between a quarter and full strength for a symptomatic person. Their own client is told nothing about it and no screen in the mod displays it.

There is exactly one tell, and it exists only for Rot Lung. A Rot Lung carrier's lungs are scarred so that their condition can never recover above 82, and that ceiling is written as permanent scar rather than as a condition floor, specifically so a night's convalescence cannot heal it away. A medic reading lung condition on the tablet can tell a carrier from a clean survivor.

Carriage has one exit. A correct course of medicine for that pathogen clears the carrier bit even with no active infection to treat. Carriage also ends at death. Acquired immunity does not.

FRAGMENT 08 - CERTIFICATE LINE, AGENT UNNAMED

SUMMARY: The clinical certificate a Doomed body prints on death has one entry for a fatal named disease. Its text is "A named disease." The pathogen is not on the line.

RESPONSE: The enum comment states the reason without apology: the record slot is typed to a body part, and widening it to carry a pathogen name was judged not worth a word. The load at first crossing rides along as the magnitude instead. Sepsis gets its own line, "Sepsis.", and so does the prion, "Kuru.", annotated as the one thing on the list that outlives the body.

FINAL NOTE: A survivor reading a friend's certificate learns that something named killed them, and how bad it had got before it did. Which of the three it was has to come from somewhere else.

~/body/ClinicalKind.java:41-50

FRAGMENT 05 - ADVICE, DELIVERED TO THE WRONG PEOPLE

SUMMARY: The Rot Lung moodle carries the line "A lung virus - antibiotics will do nothing. Get an antiviral, and keep away from other people." Past load 65 it escalates to "You are drowning in your own chest."

RESPONSE: Both strings are gated on the client's reported load being above 0.5. The sync packet reports a flat zero for any pathogen that is not symptomatic, which covers the whole incubation period and covers a carrier permanently. A third of Rot Lung survivors roll carriage.

FINAL NOTE: The warning to keep away from other people goes to the person coughing hard enough that the room already knows. The silent shedder is told nothing, ever, and sheds at a steady 0.35 for the rest of their life.

~/client/hud/DoomedHudOverlay.java:1889-1899; ~/network/DoomedNetwork.java:1114-1119; ~/body/ContagionHandler.java:354-358

Ambient exposure

Three of the four pathogens pass person to person only, so a fresh singleplayer world needs environmental seeding or the whole layer would be dead content. Every environmental route is gated behind a decision the player made and can see, and the odds are deliberately tiny per roll.

All of it is gated on frailty, which is one minus immunity over 120. At immunity 120 or above the entire environmental block returns immediately. A fed, watered, warm, clean, rested body catches nothing from the world at all.

Marrow Fever needs both real filth and a real open wound at the same time: dirtiness above 60 and a limb whose skin is below 75. Either one alone is safe. Together the roll is 0.035 percent per second at zero immunity, which averages out to a bit under an hour of continuous exposure.

Rot Lung needs genuinely contaminated air. The player must be below Y 50, under no sky, and standing in air whose measured respiratory risk is at least 10. Depth and darkness alone do nothing; an ordinary mine or underground base stays safe forever unless something is actually putting matter in the air. Recent geology dust from breaking stone, or authored organic spore sources, are what supply that matter. Enclosure only decides how long it stays suspended. A loaded ventilation unit sets the risk to zero outright.

Marrow Worm needs nausea above 35 and no other disease already running. That second gate exists because a running disease pins your nausea, and without it a bad fever would spontaneously hand you a gut parasite as well.

Only the infectious player's own tick writes to anybody else, so there is exactly one writer per infection event. Shedding runs once a second.

A pathogen with any airborne weight reaches 6 blocks. One with only contact weight reaches 2. The query box is a cube but the distance is clipped back to a real sphere, so the stated radius is honest. Line of sight is required. An airborne strain cannot pass through a wall, which means quarantine works and sealing someone in a room genuinely stops it.

Enclosed air multiplies the airborne term by 1.75. Open sky multiplies it by 0.45. Within 2 blocks the contact weight is added on top of the airborne one. The result falls off linearly across the radius to a floor of 0.15, is scaled by the shedder's strength and by the server rate multiplier, and then multiplied by 0.02 to give a per-second chance.

On the receiving end, immunity resists directly. The odds are multiplied by one minus immunity over 200 times 0.85, so a body at immunity 200 takes about 15 percent of the exposure a body at zero would. An active rebreather cuts an airborne strain to 5 percent of its odds.

A worked case: standing a metre from someone with full-strength Rot Lung, indoors, at immunity 120, gives roughly 0.8 percent per second. That is a couple of minutes of conversation. Outdoors the same exchange is about a quarter as dangerous.

The only hard counter to contaminated air is a built block: a loaded Ventilation unit within 8 blocks forces measured risk to zero and knocks the standing dust and organic loads down to 8 percent, with no power draw, no upkeep and no filter to replace. Machines, Power and Fluids

FRAGMENT 12 - VOCALISATION, THIRD PERSON

SUMMARY: Two subtitle strings exist for kuru and nothing else uses them: "Someone giggles involuntarily" and "Someone laughs involuntarily".

RESPONSE: KuruHandler plays the clip into the world at the sufferer's own block position with no excluded listener, so the afflicted player hears the episode alongside everyone in range. The giggle belongs to the ambulatory stage at 0.82 volume; the laugh belongs to sedentary and terminal and plays at full. Each episode costs stamina and adds pain to the head, and the next one is between three and twelve minutes out depending on stage.

FINAL NOTE: The subtitle says someone. It is describing you, and the game will not say so.

res/assets/doomedmatu/lang/en_us.json:863-864; ~/body/KuruHandler.java:206-232

Inoculation

Three routes exist outside the air, and each rolls only the pathogens that carry a weight on that route. A bite cannot give you Rot Lung and a meal cannot give you an airborne virus.

Direct inoculation skips the frailty gate that ambient exposure sits behind, because it bypasses the barrier the immune system defends. It scales with frailty instead, from 0.35 at full immunity up to 1.0 at zero.

Anything with a mouth that reaches you in melee applies a bite exposure, with the dose scaled by how deep the wound got, from 0.15 for a graze up to 1.0 for a mauling. A zombie's bite is separately worse: on a five second cooldown it has a 50 percent chance to seed a bite wound at 20 percent infection and 70 contamination, and a 12 percent chance on top of that to carry Marrow Fever outright.

Food exposure fires on a datapack tag of raw meat and carrion. Rotten flesh carries the full dose; the raw meats on the list carry 0.35. Cooking is the counterplay and it is one you already know.

Needles are the nastiest route because they persist. Injecting anybody marks the syringe contaminated and writes the exact blood-borne agents from that bloodstream onto the item as a bitmask, including agents carried silently by a carrier. Reusing it inoculates the next person with precisely those agents and nothing else, and also drops a local infection of at least 12 at the injection site with 35 contamination. A reused blood bag follows the same rule. The counterplay costs nothing: right-click a contaminated syringe next to an open flame and it is sterile again.

The needle route lives in DrugService, not here. Injecting anybody is what stamps the syringe contaminated and writes that bloodstream's agents onto the stack, so every shared dose of painkiller or adrenaline is a transmission event sitting in somebody's inventory. Drugs and Pharmacology

Rot Lung

Rot Lung takes the chest in four discrete steps rather than smoothly, at loads 35, 55, 75 and 92, and each one announces itself with a distinct low choking sound that is deliberately different from the ordinary cough.

When a step lands, the section floods with 18 units of infectious thoracic fluid and a sixty second window opens. Get a chest drain into the thorax inside that window and the section comes back out as fluid. Miss it and the fluid organises into scar: both lungs lose 11 condition permanently and gain 11 scar, and organ scar is a hard ceiling that no amount of convalescence recovers within a life. Only a donor lung gets it back.

The next threshold is tracked by a monotonic history cursor rather than by scar count, so draining a section cannot re-arm its threshold and the same step cannot be farmed twice.

Separately from the steps, the disease floods the chest continuously at 0.55 per second at full load. That fluid is read by the respiration model as lost lung volume at half a point of respiration per unit, so the suffocation is real, survivable and drainable.

Then there is the quiet. Once three consolidations have set, the coughing stops. It stops because there is not enough working lung left to cough with. Every signal you have learned to read says you are recovering. It is the same lie sepsis tells when the rigors end, told by a different organ.

A missed drain window does its lasting damage through the organ system rather than through the disease: the eleven points land as organ scar on both lungs at once, and scar is the organ layer's own hard ceiling on what convalescence can ever give back. Organs

Kuru

Kuru enters one way. You eat human flesh.

The risk on a portion follows the donor and the tissue, not how many meals have been eaten. Harvested flesh records who it came from and what kind of tissue it is. If that donor carried no prion, the risk is zero whatever the tissue was. If they did, the risk is the tissue's own infectivity: muscle is 1.2 percent, visceral tissue 11, ocular 52, spinal 68, and neural tissue 82. Flesh with no recorded provenance falls back to a configurable 2.5 percent. Cooking preserves the provenance exactly and never reduces the prion risk, though it does cut the ordinary nausea and sepsis a bad portion carries.

If the roll succeeds, an onset time is written two real hours into the future. Deliberately no message, no moodle, no sound. Only one seed can ever be pending; a second contaminated meal changes nothing.

When the clock expires the course begins, strictly ordered and irreversible. Prodrome runs ten minutes of headache, joint pain and weight loss. Ambulatory runs twenty-five minutes and is where movement, hand steadiness and speech start to fail. Sedentary runs fifteen minutes and takes standing and swallowing. Terminal is open-ended and eats brain at 0.15 per second, which from a full brain is about eleven minutes.

Nothing treats it. Antibiotics, antivirals, rest and surgery all do nothing. Supportive care, feeding and airway management are all anyone can offer.

The prion roll is the smaller half of what a portion costs. CannibalismService charges happiness and trauma on the same swallow, scaled by how many portions the character has eaten before, and that count outlives the body. Psychology

Cyst spores

The gut parasite has a second, slower route in, entirely separate from bad meat: airborne spores in the Cyst jungle and the caves under it.

Standing in air near authored spore sources builds a hidden burden from 0 to 100. The scan runs once a second, weights sources by distance, and requires clear line of sight, so a solid wall between a player and a bloom stops the reading. A gas mask or a rebreather cuts the inhaled portion hard. An uncovered open wound gives the spores a smaller second route that no mask can close, and a dressing on that limb closes it.

At burden 35 the nausea starts as a slow trickle. At 100 the burden seeds Marrow Worm outright, unless the parasite is already present or an antiparasitic course is running, and then resets itself to 40 so a treated infection cannot be immediately re-seeded by burden that accumulated during treatment. Out of spore air the burden clears at 0.22 per second, so a saturated burden takes about seven and a half minutes to shed.

Drinking water taken from cyst territory adds 12 burden per sip, which respiratory protection obviously cannot help with. Boiling a full canteen on a heat source clears it. Contamination already in the bottle survives a top-up from clean water, so a tainted canteen cannot be laundered at an ordinary pond.

Severely sustained nausea has its own consequence regardless of source. At 95 or above it seeds an abdominal infection at 5 percent and arms it to fester.

The Deep Maw feeds this same burden. Its breath calls the identical spore intake path at 0.42 and again at 0.18, both scaled by exposure, so walking away from the encounter can still leave you carrying a parasite that arrives minutes later with nothing to connect it to. Threats

Radiation

Radiation sickness is a single 0 to 100 dose that only ever decays on its own at 0.033 per second, which is about half an hour from a dose of 60. There is no cure to hunt for. The question is whether you can outlast it.

While it runs it does damage on several channels at once. Nausea trails it up to 40 percent of the dose. The brain cooks at 0.0003 per second per point. Above dose 10 blood is lost at 0.00025 litres per second per point, so a dose of 50 is bleeding you at three quarters of a litre a minute with no wound anywhere. Thirst drains at 0.0002 per point. Every limb takes rising pain up to 30 percent of the dose. Muscle sloughs at 0.2 per second down to a floor of 100 minus half the dose, and above dose 30 skin does the same.

On top of that, above dose 30 the handler rolls once a minute for three separate disasters. A fresh infection on a random limb at dose x 0.25 percent. An internal haemorrhage into the thorax at dose x 0.7 percent. And, rarely, a catastrophic mutation at dose x 0.015 percent, which takes 5 brain, wrecks the chest muscle down to 3.5, pins motor shock at 100, thickens the blood by 30, and makes you vomit.

Sources are barrels and irradiated crystals. Crystals pool: connected crystals flood-fill into one cluster, only the leader emits, and both the strength and the reach scale with cluster size up to a cap of six. Intensity falls off as radAtZero divided by one plus distance squared over four, applied once per second. A large crystal formation at point blank is dosing you at 24 per second and reaches nearly twenty blocks.

Radiation also drags immunity at half a point per point. Radiation and infection compound each other badly.

SUBJ-06

Drugs and Pharmacology

Doomed has two separate painkilling channels and they behave nothing alike. The opioid channel runs on a single derived number called reception, which is your active opioid level minus the tolerance your body has built against it, and everything else in the system reads that one value. The non-opioid channel is a flat level that dulls pain without ever touching reception, at the cost of thinned blood and a bad stomach. Around those sit the stimulant, the sedative, the antagonist that reverses an overdose, and a server switch that can remove the entire opioid family from the world.

Reception

The body tracks two values: the opioid level in the blood, and the tolerance built against it. Reception is level minus tolerance. Positive reception is relief and negative reception is withdrawal. Zero is a body that has learned to need exactly what it is getting.

Nothing in the mod acts on reception directly. Every effect reads a smoothed copy that chases the real value at 5 points per second, so a dose eases in over several seconds and lingers on the way out rather than snapping on and off. That smoothing is why a huge push does not kill you the instant the plunger bottoms out. It is also why a reversal is not instant.

While smoothed reception is positive it drains pain on every limb at 0.3 per second per point of reception. Pain climbs back toward its own target at 0.6 per second, so any meaningful dose outpaces the re-raise and holds pain down; a trickle dose only blunts it. Reception drops the blood-pressure target by 0.4 per point, drops the heart-rate target by a fifth of itself, and subtracts itself straight out of respiratory drive. Above reception 30 it quietly drains energy. Above reception 5, and only while mood is above -60, it pays a very small amount of real happiness.

The HUD moodle reads the raw reception instead of the smoothed one, so the chip can change a moment before the effect does.

Both painkilling channels are read together outside the drug system: TreatmentService steadies the treatment hand by (reception + Nocifen level x 0.5) / 100 x 0.18, and AmputationHandler reads the same pair as stump analgesia, so being medicated makes you better at surgery on someone else as a side effect of being medicated for yourself. Injury and Treatment

The barrel

Every factory syringe holds 100 ml, and the injection minigame fills at 50 ml per second at full needle depth. A full barrel goes in in about two seconds of holding.

Four of the shipped syringes are not neat drug. The fentanyl barrel is 90 ml of water and 10 ml of fentanyl, because nobody injects fentanyl neat, and the heroin barrel is roughly two parts heroin to one part water. A full push of the factory fentanyl syringe therefore delivers 420 points of opioid load. Respiratory arrest sits near 100. A quarter of that barrel stops your breathing, and the whole thing is four times a lethal dose.

The same barrel filled with neat fentanyl from your own chemistry is ten times that: 4200 points for 100 ml. Nothing special-cases it. The factory dilution was the only thing keeping the number survivable.

Morphine's full syringe is 90, which lands just under the arrest line, and that is why morphine is the drug that can actually be titrated. Opium's full syringe is 40. The factory heroin syringe delivers about 87 points of opioid and about 33 points of sickness, since heroin also churns the gut at half a sickness point per active millilitre.

On opium, morphine, fentanyl, heroin, the stimulant and the sedative, the one-click treatment shortcut is deliberately switched off. The minigame is the dose control on those six, and emptying the barrel in one click would be choosing the largest dose available on exactly the drugs that overdose.

An injection lands in a depot, a reservoir under the skin, rather than in the blood. The depot feeds the active level every tick at a per-drug fraction of whatever is left in it. Opium absorbs at 10 percent of the remaining depot per second, morphine 12 percent, heroin 18 percent, fentanyl 9 percent, and the sedative 55 percent.

That is what makes fentanyl the most dangerous thing in the game rather than the fastest. Its absorption is deliberately the slowest of the four, so an enormous dose spreads out: it hits hard, keeps coming, and stays catchable for a while. Opium is gentle and gradual under the same rule.

Mixing opioids blends the depot's absorption rate toward the new dose, weighted by size, so stacking drugs behaves sensibly instead of taking whichever rate arrived last.

As smoothed reception first climbs through 65 there is one line: "Your breathing is going shallow." At the 5-per-second slew that is roughly seven seconds of warning before respiratory drive reaches zero. It fires once per crossing, on the way up only.

Swallowed opioids and the regenerative serum skip the depot and write the active level directly.

One opioid arrives without a needle at all: analgesic gauze adds 28 opiate points straight to the active level at a full wrap, skipping the depot, the purity scaling and the minigame, so four wraps put a patient over the arrest line with a dressing that is not tagged as an opioid and is not counted anywhere as a dose. Injury and Treatment

FRAGMENT 04-B - REBOUND NOTICE

SUMMARY: Naloxone empties the blood and never touches the depot. When the antagonist decays to zero with more than 25 points of opioid still waiting under the skin, the reservoir starts feeding the level again and the respiratory danger returns behind it. The mod tells the player exactly once, at the moment the antagonist runs out.

RESPONSE: One line, verbatim: "The naloxone is spent, and there is still opioid in you". It fires from DrugHandler on the tick the antagonist hits zero, and only when the depot is still above 25. On the way up, the matching telegraph reads "Your breathing is going shallow" as smoothed reception first crosses 65, roughly seven seconds ahead of arrest at the 5-per-second slew.

FINAL NOTE: Both lines go through BodyAlert, whose own javadoc opens with "Action bar, never chat." - 0.2.9 pulled 135 messages out of chat on purpose so nothing would stack up and nothing would repeat. The consequence for these two is that the only notice a second overdose has begun is transient text above the hotbar, written to no log and recoverable from nowhere. A player looking down at their inventory when it fires gets no record that it fired at all.

DrugHandler.java lines 107-155 (RESP_ARREST_WARN, REBOUND_WARN_DEPOT) and BodyAlert.java:12-47

FRAGMENT 05-C - RECORDED SPEECH, WITHDRAWAL

SUMMARY: Below smoothed reception -15 the character starts speaking withdrawal lines aloud, typed out over the puppet. Three are authored. They are among the most direct things anyone in this mod says.

RESPONSE: Verbatim, from Quips: "My bones-they're itching-please, just one, I swear just one...", "I'm sick, I'm so sick without it-help me-!", and "I'm crawling out of my skin-please!". The line has a 720-tick cooldown and sits high in the priority walk, above the comfort complaints and below the damage lines.

FINAL NOTE: QuipHandler suppresses all speech once mood drops below -75. Withdrawal is itself a mood term at reception x 1.66, floored at -80. The withdrawal that produces the line is therefore also the thing that eventually takes it away, and past a certain depth the character stops asking. Whether the -75 speech gate and the -80 withdrawal floor were set against each other, or merely landed near each other, is not written down.

Quips.java:131, QuipHandler.java:50 and :216, MoodHandler.java:150-151

Overdose

Opioids do no direct damage. Respiratory drive starts at 100 and reception is subtracted from it, so reception near 100 drives breathing to zero, oxygen saturation collapses, and the hypoxia kills the brain. That chain is the whole of an opioid death. A body can be fully analgesic and dying at the same time, so restoring consciousness without watching ventilation only looks like a save.

Naloxone loads an antagonist at 0.5 points per millilitre. While any antagonist is present it drives the active level toward zero at 8 points per second, on top of normal decay. The antagonist itself decays at 1 point per second, so a 25 ml push buys about 12.5 seconds of clearing.

Naloxone clears the blood and leaves the depot alone. If the antagonist runs out while there is still opioid waiting to absorb, the level climbs straight back and the respiratory danger climbs with it. With more than 25 points still in the depot when that happens you are told: "The naloxone is spent, and there is still opioid in you." That is a cue to redose, not a decoration. An under-reversed fentanyl push is the classic way to die twice.

The diagnostic tablet's recommended dose is smoothed reception divided by four, capped at 25 ml. It is a conservative starting push and it makes no claim to have cleared you.

The opioid level itself decays on a tiered curve that gets faster the higher it is, from 0.059 per second below level 100 up to 0.839 per second above 300. Level is hard-capped at 500.

Withdrawal

Tolerance climbs whenever reception is positive, at 0.08 per second, with another 0.022 while reception is above 45. Its ceiling is the current opioid level, so it tracks a habit instead of running away. The Addictive Personality trait multiplies the climb by 1.7.

Tolerance falls whenever reception is negative, at 0.04 per second, with another 0.025 while reception is below -30. Being in withdrawal is the only thing that unwinds a habit.

Negative reception is the withdrawal. Mood takes the reception value multiplied by 1.66, floored at -80, which makes withdrawal a far heavier mood term than the high ever was a lift. Below -16 nausea accrues at 0.09 per second. Below -15 a nap or a bed ends immediately if there is any real energy left, and you cannot sleep through it.

Below smoothed reception -34 the withdrawal latches fibrillation on the heart. Latched means it stays after the withdrawal lifts. It clears at 0 or 100 percent fibrillation, or on a defibrillator or a restart. Deep withdrawal commits you to a defibrillator or an arrest. That is the actual teeth of the addiction system.

A warning stage sits ahead of all of it. Once tolerance passes 30 while reception is roughly neutral, a Dependent chip appears, because a habit otherwise stays invisible until it turns into a crash.

Dying wipes opioid level, depot, tolerance, oral load and antagonist. Respawning is a cure for an opioid habit.

Pills and charcoal

A swallowed opioid raises the active level and also a second pool that tracks how much of it is still sitting in the gut. That gut pool fades at 3 points per second as absorption completes, and it is clamped so it can never exceed the total active opioid.

One Painkillers pill is 14 points. It is a single 10 ml swallow out of a bottle rather than the bottle, and it is real relief on its own. Chaining seven or eight of them crosses the arrest line. That is the intended way to die of pills.

Mushpear, an ordinary foraged fruit, carries 10 points of oral opioid per fruit. Nothing about the item announces this.

Activated charcoal instantly binds half of whatever is still in the gut pool, purges 60 points of sickness, and opens a 60-second window during which it keeps binding at 1.5 points per second. The improvised charcoal slurry binds only a fifth, purges 20 sickness, opens a 20-second window, and has a one in four chance of adding 8 sickness instead of helping.

Charcoal only ever draws down the gut pool. An injected dose, venom and radiation all sit outside its reach. Naloxone is the answer to a needle; charcoal is the answer to a bottle.

The cost is the gut. While the charcoal window is open it absorbs less of everything, and food gives half its nutrition and half its weight gain. Taking charcoal and then eating is throwing food away.

The blunting lands inside Consumption.eat itself, which multiplies both the hunger value and the weight gain by the charcoal absorption factor before either reaches the body, so no food item is exempt and nothing about a particular meal signals that the window is open. Needs and Survival

Anhedonia

Anhedonia is a separate meter. It builds while mood sits at or below -55 and fades slowly once the body is genuinely clear of the pit. At full anhedonia every positive mood change is worth 15 percent of itself and the natural drift back toward baseline runs at 30 percent speed. It takes nothing away. It makes what would have lifted you stop landing.

Opioids feed it. While smoothed reception is 25 or higher, anhedonia builds at 0.012 per second on top of everything else. A habit alone can carry you to anhedonia 70 and no further; past that you have to do it to yourself.

Analgesia is untouched by any of it, and that is exactly the trap. The pain relief keeps working perfectly, so from the inside another dose stays the rational move while the thing being dosed for gets quietly harder to feel.

Above anhedonia 55 your own hands stop trying properly: self-treatment effectiveness falls from full down to 55 percent at the maximum. It is a reluctance rather than a block, and it never applies to work another player does on you. Above 80 nobody sitting with you can reach you at all.

Antidepressants are the counter, and they are not a mood button. A dose loads 20 points of depot and does nothing whatsoever for 14400 ticks, which is 12 in-game minutes. After that it lifts happiness at 0.022 per second and, far more importantly, halves how fast the numbness deepens. Tolerance builds at 0.05 per second while dosed and fades at 0.02 per second when clean, so swallowing the bottle stops working inside one session.

Anhedonia survives death, halved and capped at 40 each time.

Nocifen

Nocifen is a non-opioid analgesic on a completely separate channel. Reception stays untouched, so it carries none of the opioid liabilities: respiratory depression, overdose, tolerance, withdrawal. Its level stacks freely and decays at 0.07 per second, which clears a single dose in roughly 12 minutes.

One Nocifen is 50 points of level. The herbal Feverbell Chew is 12 points and costs 4 happiness because it tastes foul. Relief is 0.1 pain per second per level point, a third of the opioid rate, so a single dose blunts pain rather than masking it.

The catch is blood. Nocifen thins it: natural clotting is multiplied by a factor that falls from 1 down to 0.5 as the level approaches 100. Medicating a bleed makes the bleed last longer, and that trade stays invisible unless you know to look for it.

It also upsets the gut continuously at 0.03 sickness per second. Above level 120 a gastric bleed opens in the abdomen at 0.02 internal-bleed units per second, capped at 0.5, with extra nausea on top. Two Nocifen plus a Feverbell Chew is 112. Three Nocifen is 150, and you are bleeding into your own stomach.

On the credit side it lowers the fever setpoint and drags active infections back at 0.1 per second, which slows an infection without ever curing one.

The thinning is applied where every other clotting modifier is applied: BleedHandler multiplies its natural clot rate by NsaidHandler.clotFactor in the same product as the venom factor and the cold factor, so a medicated bleed compounds with a snakebite or with hypothermia rather than replacing them. Blood and Circulation

Stimulants

The stimulant syringe buys 3.6 seconds of stimulant time per millilitre, so a full 100 ml barrel is 360 seconds. The overdose line is 220 seconds of remaining time. A full push is well past it.

While the stimulant runs, one step fires per second: 2 stamina, 2 consciousness, 0.1 energy, 7 adrenaline, a little nausea, and a small internal bleed in the abdomen from the racing circulation. The speed and attack-rate buff builds by 0.035 a step to a ceiling of 0.25 and always bleeds back toward zero at 0.02 per second.

Above 220 seconds remaining the body starts coming apart. There is a 10 percent chance each second of a 35-point stamina crash, brain damage at 0.05 a second, a thorax pain spike of 4 up to a ceiling of 60, and convulsions. A convulsion is a real ragdoll: you are thrown, and you have to get up. The first one cannot land until you have been over the line for about eight seconds, then it is a 3.5 percent chance per second with a twelve-second cooldown between flings. Nothing tells you that you have overdosed.

The crash arrives as the stimulant runs out, and only if the window ever peaked above 59 seconds. Below 30 seconds remaining you take random 25-point stamina crashes; on the final second you lose 30 energy and vomit.

Epinephrine queues 6 active ticks per millilitre and grants 1.5 adrenaline per millilitre. Each active tick on an arrested heart has a 3 percent chance to restart it, coming back at heart rate 60 with 50 percent fibrillation and a clean, unlatched rhythm. A bolus of 40 ml or more starts and latches fibrillation by itself, so a panicked full-syringe push is a heart problem you created.

Adrenaline decays at 1.7 per second, except during a last stand, where it is pinned upward at 5 per second instead. It masks pain at 0.35 of its smoothed value, and the smoothing ramps at 4 per second, so a sudden injury hurts fully for a moment before the numbing takes hold.

The combat pen is a single right-click that applies 200 seconds of stimulant, 22.5 adrenaline, 90 epinephrine ticks, and an oxygen kick, all at once.

A convulsion is not a bespoke animation: StimulantHandler floors your shock at 20 and sets a launch velocity, so DownedStateHandler collapses you on the next tick down the ordinary downed-to-ragdoll path, and getting back up costs exactly what getting up from any other collapse costs. Pain, Consciousness and Death

The sedative

The sedative does not kill pain. It removes the person who was feeling it. Per millilitre it adds 1.6 sedation, 1.1 opioid to the depot at a fast 55 percent absorption, and it subtracts 0.16 respiration and 0.22 from blood pressure.

Sedation is a hard cap on consciousness: the ceiling is 100 minus sedation, applied as a cap rather than a write, so nothing can raise a body back through it while the drug lasts. It clears at 0.75 per second, which makes a 40 ml surgical dose about a minute and a half under.

A 40 ml push is a surgical dose. A 100 ml push is an apnoea somebody else has to breathe for. That judgement is the entire drug.

Because the relief rides the ordinary opioid depot, everything that already reads "how medicated is this body" picks the sedative up for free, including the pain mask, the hand tremble in the treatment minigames, and the vision fog. It also means naloxone reverses a sedative overdose, which is correct and is the counterplay.

Surgery is where it earns itself. An open limb adds 62 pain to its target during an operation, and sedation scales that away to nothing at sedation 70. Unsedated, a long procedure can put a conscious patient into pain shock on the table.

Sedating yourself is no use. The procedure screen aborts below consciousness 12, so a self-dose leaves you unconscious on the floor with your abdomen open. Self-surgery is done awake. Painless surgery requires a second person.

The ceiling is enforced in ConsciousnessHandler, which caps consciousness at 100 minus sedation after every other term has been summed, so a stimulant, an adrenaline surge and a shout from a friend all resolve first and are then cut off at the same line. Pain, Consciousness and Death

Purity and needles

Every drug fluid carries a purity from 0 to 100 in its own data, and it rides along through tanks, pipes and syringes. Factory pharmaceutical syringes are always pure. Anything self-made is as pure as the process that made it.

Purity is the active fraction rather than a second punishment. A 100 ml push at 40 percent grade delivers the effect of 40 ml plus 60 ml of dirty inactive material. A low-grade find cannot give a pharma-strength effect and then charge extra on top.

The dirt is charged once per injection. Sickness is 0.4 per millilitre scaled by how impure it was, so 100 ml of completely filthy drug is about 40 sickness. It can also fester the injection site, seeding up to 25 points of infection at 0 percent purity, scaled by how much volume actually went in.

Every invasive dose creates a real puncture wound at the site, and process contamination from the fluid lands in that exact wound.

A needle that has been in a person is dirty from then on. Reusing one seeds 12 points of infection at the new site whether or not any disease transfers, and it carries the exact blood-borne agents from the previous bloodstream and no others - a Marrow Fever needle cannot invent Rot Lung. Blood bags work the same way and come back empty and contaminated, inheriting both bloodstreams the line ran between. The fix is one right-click at a campfire.

In the minigame, the needle's entry point locks the moment it pierces. After that the barrel only tilts with how far a shaking hand drifts off that line. Drift past 80 units and the needle tears free: 20 ml of the syringe wasted, 20 pain, a fragment snapped off inside the limb if one is not already there, and nothing delivered. A fragment in a wound suspends natural clotting until it is pulled.

A mixed solution injects proportionally - pushing 40 of a 100 ml mix delivers 40 percent of every component, not 40 ml of the first one - and its purity is the volume-weighted average of what is in it.

All three quality tags a syringe reads - Purity, ChemicalCarryover and MicrobialLoad - are written by the Reactor and the process machines from their own equipment cleanliness and blended by volume in PurityBlendingTank, so the grade you inject is decided entirely upstream in the chemistry and carried, never rerolled. The Chemistry Engine

A reused needle sets the site's infection to 12 and the wound's contamination to 35 through the ordinary wound ledger, so the puncture then progresses under the same infection rules as any other dirty wound and can carry through to sepsis without a second injection ever happening. Disease and Infection

Nicotine

Each cigarette needs a lighter or flint and steel somewhere in the inventory. It gives up to 2 mood, adds 0.3 permanent lung tar, and adds 2 points of nicotine dependence. Addictive Personality multiplies the dependence gain by 1.7.

Dependence runs 0 to 100 with four stages at 10, 30, 55 and 80. At the ordinary rate stage I begins on the fifth cigarette. While nicotine is absent at any stage, derived mood carries a flat penalty: 4 at stage I, 9 at stage II, 16 at stage III, 25 at stage IV. That last one is a large enough mood cost to matter on a body where mood drives despair.

The reward shrinks as the dependence grows. A smoke is worth its full 2 mood at stage 0, three quarters at stage I, half at stage II, a quarter at stage III and an eighth at stage IV. Past the early stages you are no longer smoking to feel good, you are smoking to stop feeling bad.

A cigarette buys quiet for 8 minutes, and the higher stages buy less: 7 minutes at stage II, 6 at stage III, 5 at stage IV. Dependence recovers only while that quiet has run out, at 0.02 per second, which is 1.2 points per simulated minute. Clearing stage IV takes several active in-game days without smoking.

Dependence survives death on purpose. Respawning cures an opioid habit and leaves this one alone. Lung tar, which lowers the stamina ceiling, is cleared by death and by nothing else. Five hundred lifetime cigarettes earns Loyal Customer.

Blood alcohol is a single value and it clears at a flat 0.02 per second regardless of how much is in you. Almost every other decay in the mod is proportional. This one is not, and that choice is the whole mechanic: a second bottle opened before the first has cleared stacks on top of it, while the same two bottles an hour apart never reach the same peak.

A 400 ml bottle puts on 24 points and clears in 1200 seconds, one Minecraft day. Against Nocifen shedding at 0.07 per second, that is about three and a half times slower per unit. You are stuck with it.

Below 15 nothing registers at all, so a single 100 ml gulp at 6 points is free. The distortion ramps from 15 to full at 55. Visible drunkenness starts past about 35 percent of that ramp, a blood alcohol of 29 - two glasses of wine, or one spirit and some patience. Past that point the room starts moving, refreshed every two seconds.

Alcohol carries no pain relief, no mood lift, no euphoria, and it never will. It hydrates worse than water and sickens you unconditionally. The part of it above a tolerated threshold is what your liver reads. Everything alcohol does is a cost or a distortion.

Death sobers you completely.

Tar is spent where you would least look for it: StaminaHandler subtracts lung tar from the stamina ceiling in the same expression as SpO2, so a heavy smoker's maximum stamina is capped by the same term that a suffocating player's is. Needs and Survival

FRAGMENT 11-A - CUSTOMER RECORD

SUMMARY: Nicotine dependence and the lifetime cigarette count are two of the very few numbers on the body that a death does not clear. Lung tar runs the opposite way: dying is the only thing that ever removes it. At 500 lifetime cigarettes the mod grants an advancement from code rather than from a criterion, using minecraft:impossible as the trigger so nothing else can award it.

RESPONSE: The advancement text, verbatim: "Smoke 500 Matulls. Matu Tobacco Co. thanks you for your continued patronage." It is a challenge-frame advancement, announced to chat, not hidden. Its file carries a comment saying the counter survives death on purpose. The item tooltip it hangs off reads "Matu Tobacco Co. - 'A small death, held between your lips.'"

FINAL NOTE: CHANGELOG.md:625 records the one place this rule was tested and upheld. A player found that /doomedheal wiped opiates, tolerance, painkillers and stimulants while quietly skipping nicotine, so a total-body reset left you still addicted and already withdrawing. The fix cleared the dependence and deliberately left the count alone, on the stated grounds that the number of cigarettes your character has smoked is a record of what they did rather than something wrong with them.

data/doomedmatu/advancements/loyal_customer.json, DoomedData.java:238, CigaretteItem.java:43, en_us.json:493, CHANGELOG.md:625

The opioid switch

One server config flag, opioidsEnabled, defaults to true. Set it false and the opioid family stops existing rather than merely stopping working.

The family is opium, morphine, heroin, fentanyl and oxyline. Naloxone is deliberately outside it, because removing the antidote along with the drug would be the exact wrong half to cut, so naloxone still turns up in loot.

Switched off, the whole chain goes. Syringes and every intermediate item on the synthesis chain leave loot tables, trader shelves and every creative tab, because half a chain is worse than none. Worldgen fluid barrels drop those entries from their weighted pools and keep their own proportions among what is left; before that gate existed, opium alone was 22 of the common pool's 64 weight, roughly one generated barrel in six. Wild opium poppies stop generating, and a poppy that predates the switch keeps growing while dropping nothing at all, which closes the renewable farm a single surviving seed used to be. The synthesis recipes leave the machines and the recipe viewers, and so do the reactor steps that were orphaned when their precursors went.

In the body, the depot, the level and the smoothed reception are pinned to zero every single tick. That is what makes a save that already carried a dose clear out instead of freezing. Tolerance and antagonist decay still run on those zeros, so nobody is stranded mid-withdrawal by a config flip.

Oxyline counting as an opioid surprises people. With the switch off, the oxyline syringe is gone and its effect is refused by name.

Two things sit outside the gate. The oral Painkillers pill is off the item tag, so it still generates in loot; the level pin makes it inert, and it is still there to find. And the combat pen writes its oxygen, stamina and adrenaline effects directly rather than through the drug path, so the pen keeps working exactly as before.

The switch reaches into generation as well as into loot: CaveScatterFeature drops the blocked entries from its weighted barrel pools and renormalises what is left, and OpiumPoppyBlock keeps growing a standing poppy while returning nothing at all from a harvest. Items, World and Trade

SUBJ-07

Needs and Survival

Doomed replaces the vanilla food bar with six interlocking survival tracks that all feed the same body. Hunger and thirst run on separate clocks, and behind them sits a body-weight ledger that decides how fast you heal, how much you can carry and whether your heart stays in rhythm. Temperature is a slow simulation with real thermal mass, so a place turns on you over minutes rather than instantly. Everything below is server-authoritative and per-player, and every per-second rate is multiplied by the pack's paceFactor.

Two clocks

Hunger and thirst run on separate clocks, deliberately out of phase so the two never come due at the same moment. Hunger falls a point every 33 simulated seconds, which empties a full 100 in about 55 minutes at the default pace. Thirst falls a point every 26 seconds and empties in roughly 43. Across one Minecraft day the body spends about 36 hunger and about 46 thirst. Water asks first, and asks more often.

Heat is the only thing that speeds thirst up. The divisor is 26 minus half the core temperature above 37 C, floored at 1, so a fever or a desert genuinely dries a body out faster while a cold biome leaves the rate where it was. Metabolism scales both clocks together: the run setting, the FUR trait at 1.25x and the DROWSY trait at 1.15x each multiply hunger, thirst and energy at once. RAVENOUS adds 1.45x to hunger alone. THIRSTY adds 1.45x to thirst alone.

Both bars run past zero, hunger to a floor of -50 and thirst to the same. Negative hunger is active starvation, and it strips 0.15 muscle health per second from every limb at once. Below thirst 30 a dull ache builds in your chest and eases again at 25. Below thirst 0 your blood thickens by 0.25 viscosity per second, which is the road to a clot. Dehydration also throttles plasma recovery to 30 percent and drags arterial pressure to 72 percent of normal at the floor.

Deep cold bills hunger separately. Below 32 C core the body burns 0.035 hunger per second, 2.1 a minute on top of the ordinary drain. Shivering is expensive.

Thirst is read straight into the circulation sim, where hydrationPressure scales the circulating-volume contribution to arterial pressure and hydrationBloodRecovery throttles how fast plasma rebuilds. Blood and Circulation

The weight ledger

Every food in the mod is priced against two constants. One point of vanilla nutrition is worth 1.75 hunger and 0.15 body weight, calibrated so the mod's reference burger and a vanilla cooked steak agree with each other. Divide one by the other and the exchange rate that matters falls out: a single point of hunger carries 0.0857 body weight.

Metabolism burns weight continuously, and the burn is derived from that same exchange rate rather than guessed beside it. Maintenance is exactly the weight that the food holding hunger at its station would have carried, which works out at about 9.35 weight per hour at the default pace. A deficit term sits on top of it: 1 minus hunger divided by 100, clamped between -0.5 and 1, with the final burn being maintenance multiplied by one plus that deficit times 1.5.

The consequences read straight off the formula. At hunger 100 the burn is exactly maintenance and weight holds. At hunger 0 it is 2.5 times maintenance, which is a body eating its own tissue. Above hunger 100 the deficit floors at -0.5, so a stuffed metabolism slows to a quarter of maintenance and stops there. Metabolism will never manufacture mass. Getting heavy is something done with food.

Weight itself is stored as an offset clamped between -80 and 100, with 0 as a normal frame. The moodle tiers run Lean below -15, Underweight below -30, Starving below -40 and Emaciated at or below -50. The other direction gives Well-Fed above 15, then the Overweight tiers, then Pyro Obese at 50 and above.

One trap worth naming: overeating banks only the weight the stomach accepted. A meal that overshoots the 175 ceiling spends the refused portion on sickness and returns no mass.

Body weight is a load-bearing number, not a cosmetic one on a panel. It gates four separate systems, and each of them stays quiet about it.

Repair. Tissue repair is the product of a food term, an energy term and a wasting term, and the wasting term slides from 1 down to 0.45 as the weight offset falls from -10 to -60. That multiplier covers soft tissue, stump healing, bone and blood rebuilding, so a wasted body mends at well under half speed. It also caps what brewed Regeneration can deliver, since the potion multiplies this rate rather than replacing it.

Immunity. Every point of weight offset past -10 costs 0.40 immunity. At -60 that is 20 immunity gone, and at the -80 floor it is 28, on the same scale infection rolls read.

Carrying capacity. The base ceiling is 11 kg. Wasting subtracts up to 6 kg of it, hunger under 40 costs another 1.5 kg, thirst under 40 costs 1 kg, and sickness shaves 0.025 kg per point. Sitting above hunger 100 gives 1.5 kg back. Strength and Resilience above level 10 add half a kilogram per level, taking the lower of the two.

Speed. Past 40 points of weight offset in either direction, every further point costs 0.006 of the movement cap. Hunger below 35 separately scales speed down toward a floor of 0.4 at empty, and thirst above 125 costs a flat 10 percent.

The heart. Once the absolute value of your weight offset passes 60, each second rolls to seed forced fibrillation, with odds ramping from zero at 60 to certain by about 110. Being far too thin is a cardiac event in its own right, not a milder version of being heavy.

Wasting reaches the organs through that same repair term: OrganHandler samples tissueRepair once a day and marks the whole body STARVED below 0.55, and a marked day gives no organ its dawn regeneration. Organs

Activated charcoal sits upstream of the whole ledger: while its window is open, Consumption.eat scales both the nutrition and the weight of everything you swallow before either one is banked. Drugs and Pharmacology

FRAGMENT 12-C - EXHAUSTION CHIP, BOTTOM RUNG

SUMMARY: At energy 7 or below the tired moodle turns critical. Its flavour line reads "You've embraced the true Matu lifestyle." The advice line on the same chip reads "You are about to pass out from exhaustion. Sleep in a bed."

RESPONSE: Both strings are Java literals in the HUD overlay rather than keys in en_us.json. No moodle text in the mod passes through the lang files at all, so zh_cn carries none of it.

FINAL NOTE: The clinical half of that chip is the half a player actually needs at energy 7, and it is the half that will never leave English.

~/client/hud/DoomedHudOverlay.java:2270-2282; no matching key exists in assets/doomedmatu/lang/en_us.json

Excess

Both bars run well past full, and both punish the excess rather than the act. Hunger caps at 175. Anything above that ceiling converts to sickness at 1.2 times the overflow, and an overflow of more than 3 points carries a 20 percent chance of vomiting on the spot. Eating with dirtiness at or above 75 adds its own 10 percent chance of 8 sickness, whatever the meal was.

Thirst is the dangerous one. Above 100 the drain above that line is taxed by the overdrink multiplier, which defaults to 2, and above 175 the tax is 2.5. Only the portion of a step spent above 100 is taxed, so crossing the line is smooth rather than a cliff.

Past 175 you are in water intoxication. Your head pain climbs toward 50, your brain loses 0.05 health per second, and each second rolls a 1.66 percent chance of seeding forced fibrillation. This is the single most common accidental death on a fresh server, and the shape of it is always the same: a full canteen drunk on top of an already full stomach. A canteen sip is worth 9 thirst and a full six-sip canteen is 54, which is safe from any normal starting point and lethal on top of 150.

The practical rule is the one the in-game record gives. Drink when thirsty. The canteen is the safe part. Chugging refills nobody needed is the part that kills you.

Mood reads both bars continuously below about 40, and above 100 for thirst they stop mattering to it. Over-eating trickles a little mood back above hunger 101, which is the only reward excess ever pays.

Water

A canteen filled from open water comes out murky. Aim at a water source and use it to fill, use it again to drink, and use it on a lit heat source to boil it clean. Each murky sip adds between 6 and 14 sickness before the pack's dirty-water multiplier is applied. Clean water costs nothing.

Anything that counts as a lit fire will boil it. That covers the mod's brazier, a powered heater, any campfire, any furnace burning, and a magma block. It is what makes the temperature-tier heat blocks pull double duty as a water purifier.

Contamination survives a top-up, and this is the rule people trip over. Filling a canteen that still holds tainted water writes the whole canteen back to full and keeps the taint, so a single bad sip taken to open a slot buys nothing at a clean pond. Clean water poured into a murky canteen leaves the mixture murky. Boiling it and drinking it dry are the two ways out.

Water drawn inside Cyst territory is worse than murky. It reads as Cyst-tainted, and each swallowed mouthful adds 12 to a hidden spore burden. Three unboiled mouthfuls make the exposure clinically visible, and repeated drinking can seed the parasite outright. Swallowed water is already past anything a respirator can filter. Boiling is the entire counterplay.

Bottled and canteen liquids elsewhere in the mod share a common rate. Clean water is worth 90 thirst per litre, which is where the 9-point sip comes from. Beverages that are also meals, such as milk, cereal and soup, route their food through the same eating path, so they obey the overeating and dirtiness rules exactly as solid food does.

The swallowed dose feeds CystSporeExposureHandler, the same hidden burden the Deep Maw's exhale fills, and the whole route goes inert unless cyst exposure, infection and contagion are all switched on. Threats

Ambient set point

The ambient set point starts from a five-band read of the biome. Hot is plus 8 C, warm plus 4, temperate 0, cold minus 4 and freezing minus 10. The band comes from the biome's base temperature, with one override: a biome cold enough to snow at that exact position is forced into the freezing band regardless of what its base number claims. The override is deliberate. A Deep Frozen Ocean has a base of 0.5, which reads as temperate, and used to report a perfectly comfortable body temperature in a place full of ice.

Four modifiers stack on top of the band, in a natural sky-lit dimension only. Thunder is minus 5 and plain rain is minus 3, with an extra minus 2 where the biome is cold enough for it to fall as snow, and weather reaches only what stands under open sky. Night is minus 3 and twilight minus 1. Altitude costs a further 1 C every 24 blocks above Y 100, down to a limit of minus 6.

Cover changes the arithmetic twice. Under a roof the night and altitude terms are cut to 30 percent of their value and a flat 1.5 C is added. Powder snow and snow are the exception: standing inside either flags the position as freezing rather than sheltered, because a cold block sits at head or feet.

Below Y 0 the set point gains 1 C every 24 blocks, up to plus 3, in any dimension. Descending genuinely escapes surface cold.

The finished offset from 37 is then scaled by temperatureSeverityMultiplier, so a pack sharpens or softens every contributor together and cannot accidentally invert one.

Roughly calibrated: an ordinary cold or snowy night settles a body near 34 C, a freezing biome exposed at night near 32 C, and it takes a freezing biome plus storm or altitude to drop under the 31 C frostbite line.

Core temperature is a slow simulation with real thermal mass rather than a readout of the block underfoot. Every rate-based thermal input is divided by 7, giving a time constant of about 44 seconds and full settling in a little over two minutes. A place can be felt turning on you while there is still time to act, and a coat put on before setting out is worth more than the same coat put on once the cold has landed.

Two pulls act at once. Homeostasis drags the body toward 37 C at 0.005 per tick before the mass divisor. The environment drags it toward its ambient set point at 0.003 per tick, divided by insulation. Insulation decides where the body ends up. Thermal mass only decides how long the journey takes.

Illness moves the target instead of fighting it. The worst single infected limb raises the regulated setpoint by up to 2.2 C at full infection, systemic sepsis adds up to 1.8 C, and the two together are capped at 3.5 C. That is why a fever actually reaches the fever bands instead of converging just above normal. An active NSAID lowers the setpoint by up to 2 C, which is what an antipyretic does. Once the body is already hotter than the setpoint, homeostasis pulls it back toward 37 exactly as normal, so a fever and a hot biome cannot stack additively.

Carrying a thermometer turns on a bottom-left gauge: the exact core temperature, plus a hollow marker for where the world is dragging it. The gap between the two markers is the whole of what the climate is doing to you, and it is the only way to confirm the shelter you just built did anything.

Herb crops sample the identical reading through LocalClimateService.suits, so a brazier lit for your own warmth also moves the climate band that a bittermoss patch or a herb bed is trying to grow in. Items, World and Trade

Insulation

Insulation is a divisor on the ambient pull rather than a source of heat. It starts at 1 and adds three things: the total isolation of equipped Doomed wearables, one hundredth of the body weight offset, and worn armour value times 0.02. A full vanilla armour kit is worth about plus 0.4. A full insulation set of fur coat, insulated liner and fur hood is about 2.4 isolation, which roughly halves the drift.

Body fat is insulation, and a lean body sheds heat faster for it. That is the same weight offset that governs everything else, so a wasted body has to work its clothing harder.

Wetness is the term that kills people who thought their gear was enough. While the ambient sits below body temperature, insulation is divided by one plus wetness times 0.02, floored at 0.4. Fully soaked cuts effective insulation to a third. Drenched on a frozen peak, equilibrium falls from about 31.6 C to about 26 C, which is deep hypothermia and real frostbite, while the same drenching on a temperate night only dips to about 34 C. Wet skin also sheds heat directly, at 0.001 C per second per point of wetness.

Wetness itself rises 15 per second while you are in water and 1.5 per second in rain under open sky, capping at 75 from rain alone. It dries at 0.35 per second above 75 and 0.2 per second below. Above 37.5 C core the body sweats, raising wetness to a cap of twenty times the degrees above 37.5.

Fur is a trade rather than a gift. Dry it is worth plus 0.45 insulation, the best in the mod. Soaked it is minus 0.28, crossing over near 62 wetness. It also dries at 0.55 speed, multiplies incoming heat gain by 1.35 in warm ambient, and raises the whole metabolism by 25 percent.

Each metal prosthetic is a thermal bridge, adding 0.00025 per tick of extra cold conduction while the ambient is pulling downward.

Wetness is a direct mood cost as well as a thermal one: MoodHandler weights it at 0.05 against total happiness, so being soaked shows on the mood chip well before the cold has reached your core. Psychology

Radiant heat

Radiant sources are scanned in a 3-block cube every 10 ticks and applied straight to core temperature, bypassing insulation entirely. A fire warms through a coat. Each source is weighted by distance, falling to zero at the edge of the scan, and a solid collision block between body and source cuts it off.

Strengths are tiered. Lava and the strong tag are 8 C, the standard tag is 5, medium is 2.5 and weak is 1. The mod's brazier is 5. A powered heater is 7 and a powered cooler is minus 6. Cold sources run minus 3 for strong and minus 1.5 for standard. Any tagged block with a lit state has to be lit to radiate, so an unlit campfire or an idle furnace is worth nothing.

Sources stack, with diminishing returns. The strongest counts fully, the next at half, the next at a quarter, and so on for six entries. The series converges at exactly twice the strongest source however many get built. A well-built room genuinely warms, and a hoard of braziers still cannot cook you.

The taper is the important part. Ordinary warm sources fade out as the body approaches 41 C, so sitting by a campfire all night is comfort and stays comfort. Furnace-class sources taper toward 46 C instead, which is past the 42 C brain line, so standing beside open lava genuinely cooks you. Furnace class is decided by the dominant single source's own strength rather than by the stacked total, so a pile of braziers can never become a furnace.

Being under cover with stagnant air retains up to 25 percent more of whatever conditioning is present, and a loaded Ventilation unit in range removes that bonus.

The heater and cooler are PoweredClimateBlock instances read off their lit state, and the Ventilation unit that cancels the enclosure retention bonus needs no power and no ticker at all. Machines, Power and Fluids

The bands

The moodle tiers are the readable surface. Cold begins below 35.5 C as Chilly, then Cold below 34, Freezing below 32.5 and Hypothermia below 28. Heat begins above 38 C as Warm, then Hot above 39, Overheating above 40.25 and Heatstroke above 41.5. Where infection or sepsis is contributing, those same four chips are renamed Fever through Critical Fever, which says the temperature is a symptom rather than the weather.

The real thresholds sit elsewhere. Above 41 C blood volume falls 0.225 litres per minute. Above 42 C your brain loses 0.5 health per second. Below 32 C the body burns extra hunger and shivers a little heat back. Frostbite accrues below 31 C and thaws above 35.5 C.

Consciousness is capped by a temperature curve, flat at 100 across 33 to 40.7 C, falling to 79 at 30 C and 60 at 20 C, and on the hot side to 50 at 45 C and 27.5 at 52.2 C. Movement has its own curve, flat between 32 and 39 C and losing 4 percent of the cap per degree outside that band, down to half speed.

Cold thins clotting. The penalty starts below 35 C and bottoms at 60 percent of normal clot rate by 30 C. There is a matching reward. Hold the core between 36.5 and 37.5 C for a sustained two minutes and it banks up to 8 percent better clotting. That comfort clock fills at one tick per tick and drains at three, so warmth is banked rather than owned, and it pays for a camp rather than a passing fire.

Mood loses 0.03 per second whenever the core is under 33.5 C or over 40 C.

Both clotting terms live in BleedHandler, so a cold body and a warm camp are changes to how fast a wound seals rather than to temperature itself. Blood and Circulation

Frostbite

Frostbite accrues below 31 C core only, which is genuine deep hypothermia rather than ordinary cold. Head, neck, eyes, chest and abdomen are exempt. It works on a distance-from-core gradient: hands and feet freeze at full rate, forearms and shins at 0.6, upper arms and thighs at 0.35.

The base rate is 1.6 per second at the onset edge, scaled by how far below 31 C the core has fallen, reaching full depth at 25 C. The WARM_BLOODED trait multiplies it by 0.6 and POOR_CIRCULATION by 1.6.

Above 35.5 C it thaws at 2.2 per second, scaled by warmth and inverted against exposure, so proximal limbs thaw first and the cold recedes outward with the tips last. A heat pack floods 5 C into the core, capped at 38, and strips between 12 and 40 frostbite from each affected limb, weighted the same way.

At 85 frostbite the tissue starts dying. Skin loses 1.2 per second and muscle 0.8 per second, and deep frostbite blocks natural healing entirely while it stays above that line. At 99 frostbite with skin and muscle both at or below 1, the limb is lost. It comes off through the shared dismemberment path, so everything distal to it comes off too, and the stump is dry rather than gushing, because frozen black tissue bleeds nothing like a saw cut. There is no message. The doll, the moodles and the stump are the notification.

Necrosed tissue that never reached the loss point heals normally once thawed.

The loss runs through DismemberService.necroticLoss, the same path a saw or a crushing injury uses, so everything distal comes off with it and the stump enters the ordinary treatment model from there. Injury and Treatment

FRAGMENT 11-A - THE WARM PART, PAGE FOUR

SUMMARY: A four-page field journal entry that writes itself as your extremities freeze. Page one opens "The cold has changed." Page four is written only after a segment comes away, and records "The stump hardly bled."

RESPONSE: Page four is gated on page three, and page three only unlocks when a limb thaws from above 60 frostbite back under it with your core over 35.5 C. Page three is in turn gated on page two, which needs frostbite to have crossed 85. A player who freezes straight through to the loss without ever warming up satisfies none of that chain and gets nothing.

FINAL NOTE: The entry is the only sustained account of frostbite the game will ever give you. Freezing badly enough to lose the finger, and never once getting warm, costs you the record of it as well as the finger.

res/data/doomedmatu/doomed_journal_entries/the_warm_part.json, with the observation gates at body/FrostbiteHandler.java:69-101

Stamina

Stamina runs 0 to 100 and is spent by moving. Sprinting costs 1.2 per second and walking costs 0.1. Both are multiplied by one plus over-encumbrance, and by an armour exertion penalty of 0.017 per armour point up to a cap of plus 40 percent. That penalty applies to movement drain alone, so resting in armour recovers at the ordinary rate. Moving also warms the body by 0.04 C per second, scaled by thermal mass.

At rest recovery is 1.4 per second, multiplied by several factors at once. Energy throttles it directly with a floor of 0.2, so a drained body recovers poorly. Encumbrance multiplies it by one minus 0.7 times overload. Resilience gives a base 1.2 and a further 0.02 per level above 10, capped at 10 levels. Caffeine multiplies regen by 1.5 and cuts movement drain to 0.45.

Recovery is gated on breathing. Respiration has to be at least 2.5 breaths per minute, and underwater without a real air source recovery is zero until stamina is already under 25. Kneeling to hold pressure on a wound counts as work rather than rest: it charges the sprint rate.

The ceiling is not 100 for everyone. It is the higher of 70 and current SpO2, minus 0.30 for every point of lung tar, floored at 25. A lifetime of cigarettes shaves up to 30 off the top permanently.

Falling below 1 stamina slams motor shock to 60, which collapses you. Climbing back above 55 after bottoming out rolls, gated entirely on good mood, for a 20-second Runner's High worth 1.5 times regen and 45 adrenaline. At neutral mood the roll can never come up.

Sitting on any seat entity restores 0.4 stamina per second.

Runner's High pins adrenaline at 45, five points over the level MoodHandler treats as living on fight-or-flight, so the reward for being in good spirits quietly drains mood for the twenty seconds it runs. Psychology

The ceiling is an organ readout wearing a stamina label, taking the higher of 70 and your current SpO2 and then subtracting the tar coating your lungs. Organs

Rest

Energy runs 0 to 100 and drains at 0.049 per second while awake. That base is multiplied by an exertion factor of two minus one hundredth of stamina, multiplied again by a mood factor that reaches 2 at mood -100 and shaves up to 20 percent off for genuine happiness. The product of the two is capped at 2.5, so hard, unhappy play asks for a rest roughly every 14 minutes rather than every 8. Sickness adds one plus 0.02 per sickness point. Caffeine cuts the whole burn to 0.7. The DROWSY trait multiplies it by 1.4.

There are three rests, and where the body is lying tells them apart. A vanilla bed at night skips to morning, wakes you at energy 100 with 180 seconds of caffeination, clears any lingering grogginess and lifts mood by 3. A bed in the daytime skips no time, so the rest runs in real time at 14 times base regen and ends at energy 99 with no instant bonus. The nap-anywhere button lies the body down where it stands, and the block directly below decides everything: a bed or any wool is a comfortable nap at 12.75 times regen, waking at energy 90 and leaving only 20 seconds of grogginess, while bare ground is 1.7 times regen, gives up at energy 75, and leaves 90 seconds of it.

A nap also ends early on pain above 40, blood below 2 litres, sickness above 55, cardiac arrest, a hit taken, or a sprint.

Nightmares strike naps only, never a bed. Below mood -40 each lie-down rolls once, the chance ramping from 0 at -40 to 45 percent at -100 and doubled by the NIGHTMARES trait. A nightmare caps energy at 45, leaves 120 seconds of grogginess and costs 4 mood.

Energy also caps consciousness at energy times 4.2, floored at 31, and grogginess caps it at 70 for as long as it lasts.

Sleep debt is also an immune penalty the sleep system never mentions: every point of energy below 60 costs 0.45 immunity through PhysiologyFactors, so running yourself down to zero hands the contagion layer 27 points before anything else is counted. Disease and Infection

FRAGMENT 13-B - ADVANCEMENT doomedmatu:nightmare

SUMMARY: Title: "Woah! It's a reference to... You!!" Description: "Get thrown out of bed by your own head." Icon is a red bed. It announces to chat.

RESPONSE: The grant site refuses beds. The roll happens on napStart only, and the comment beside it states that the bed is the reliable refuge that always rests you. Every player holding this advancement earned it lying on bare ground or on a wool block.

FINAL NOTE: The description was written for behaviour the code either lost or never had. Which of the two, the record does not say.

res/data/doomedmatu/advancements/nightmare.json against body/EnergyHandler.java:116-130

Grime

Grime runs 0 to 100 and accrues from four sources. The passive trickle is one point every 1500 seconds, which is glacial: about 20 hours to matter on its own. Working underground with no Ventilation unit in range adds 0.008 per second, reaching the immunity threshold in about an hour and three quarters of continuous enclosed time. Sweating adds up to 0.045 per second, but only above 37.8 C core and only while actually moving. Breaking soil barehanded adds 0.38 per block, or 0.22 for sand and gravel.

Standing in water strips 30 per second, down to a floor of 10. A Wash Station scrubs to zero anywhere, which is what makes it worth building underground, and leaves 25 wetness behind.

What grime does is the part the bar keeps to itself. From dirtiness 25 upward it transfers into any exposed open wound on a ramp that reaches full strength at 100, raising the recurring infection roll. Disinfecting a limb cuts that transfer to 10 percent. Separately, every point above 50 comes straight off immunity, which raises the risk of everything else in the contagion layer at the same time. At 75 and above, eating carries a 10 percent chance of adding 8 sickness.

Marrow Fever is the one that specifically requires both. It needs real grime and a real open wound at once plus lowered immunity, and either one on its own leaves it unseeded.

The moodles are Grimy above 50 and Filthy above 80, and both quote the live number so it can be read precisely.

Getting dirtiness to 20 or below also scores the WASH anchor of the daily upkeep, described below.

Both halves of that land squarely in the contagion layer: InfectionHandler subtracts one point of immunity for every point of grime over 50, and reads the same dirtiness figure again when it rolls wound inoculation. Disease and Infection

SUBJ-08

Psychology

Your character's mind is simulated as two separate numbers that most players assume are one. Mood decides how much of what you try actually happens, how fast you walk, how quickly you tire, and whether your body starts hurting itself while you stand still. Underneath it sits anhedonia, a number the game never shows you, which decides whether the pit closes on its own or becomes somewhere you live. Almost everything in this domain is invisible: there is no numbness bar, no self-harm warning, and no on-screen tell that the last-stand roll is reading a mood you had nine minutes ago.

Happiness and mood

Mood is never stored. It is a display of a calculation run fresh, and underneath it sits a slow persistent baseline called happiness.

Happiness moves in fractions per second. While the character is awake it erodes from sickness above 20, from hunger, from thirst, from average pain above 50, from an open bleed, and from a core temperature outside 33.5 to 40 degrees. Standing alone under the night sky, or being anywhere in the Nether without company, costs 0.03 per second. Living above 40 adrenaline costs another 0.02 per second, so a long fight wears a body down while nothing lands on it. Overeating past hunger 101 pays a trickle back. Sleep suspends the whole set of drains, which is why a bad night in a bed is still respite.

Happiness also springs back toward neutral on its own at 0.01 per second, faster when it is negative. Another player, a villager, or one of the character's own tamed animals within 14 blocks multiplies that spring by 1.9. Company is the single largest passive mood mechanic in the mod and the game says so nowhere.

The derived total is rebuilt from scratch every tick. It takes the baseline and subtracts pain at 0.1 a point, sickness at 0.1, radiation at 0.1, hearing loss at 0.2, wetness at 0.05, trauma at 0.525, and 0.2 for every point of blood missing off a 5 litre scale. Hunger and thirst come off on a ramp worth up to 18 each. Opiates add euphoria, or in withdrawal subtract 1.66 times as hard. The whole result is then multiplied by one minus horrified level times 0.005, so a Deep Maw that has recognised you halves your mood outright.

That multiplication is why patching every wound sometimes changes nothing. The baseline is fine. A term no dressing reaches is eating the total.

The horrified level that scales the whole derived mood is written by ThreatEncounterHandler and by nothing else, so the term you cannot bandage is the Deep Maw's recognition of you. Threats

Cost and payback

Mood is wired into four systems, and until recently none of them said so.

The refusal curve is the big one. At mood 0 nothing happens. From 0 to -30 the chance that an interaction simply fails ramps to 15 percent. From -30 to -100 it ramps to 90 percent, and at the floor it takes roughly ten attempts to get one click through. It applies to left-clicks inside Doomed screens and to picking items up off the floor. Keys and escape stay live, so the curve can always be walked out of, and the pickup event re-fires while a player stands on the item, so a refusal costs a fumble rather than the item.

Movement force is scaled by mood clamped into 0.2 to 1.2 and then capped at 1, so the term only ever slows. It starts biting below mood -20 and bottoms out at a fifth of walking speed.

Energy drain is multiplied by one minus mood over 100, which doubles the burn at the floor.

At mood -50 or below, apathy hides your own hunger and thirst moodles and dims the hotbar gauges. The needs themselves carry on exactly as before. You starve on the same clock, and the body panel still reads true. You simply stop being reminded. A client option restores the chips.

Good mood pays back above +10. Energy drain drops to 0.8 times at mood 100. Bottoming stamina and climbing back above 55 rolls for Runner's High at up to 35 percent, which grants 20 seconds of 45 adrenaline and 1.5 times stamina regeneration. MoodBonus also defines a positive-effect duration bonus that nothing in the code calls, so do not count on it.

GrowthSpurtScheduler drops mood through addHappiness with a negative delta every tick of a spurt, and negative deltas skip the anhedonia gate entirely, so a growth spurt lands at full weight on a body nothing else can reach. Transformation

Anhedonia

Before anhedonia existed, mood was derived and self-correcting: patch the wounds, eat, and the pit closed by itself in minutes. Anhedonia is what makes a depression last. It is the most important number in this domain and the game shows it nowhere.

It builds only while derived mood sits at or below -55, and it builds faster the deeper that mood goes. At the floor of -100 it gains 0.125 per second, so roughly thirteen minutes of rock bottom takes a character from nothing to fully numb. It fades once you are genuinely clear of the pit, above mood -40, and then at 0.03 per second - slower than it built. Clearing a full 100 takes the better part of an hour of being all right.

It does exactly one thing, and it was built as the deliberate opposite of a debuff. It multiplies the things that would lift you and leaves the things that hurt you at full strength. Every positive happiness change is scaled down to as little as 0.15 of itself at full numbness, applied inside the setter so every call site inherits it. And the automatic spring back toward neutral slows to 0.30 of normal, which is the load-bearing half. The pit stops closing itself.

Past anhedonia 55 your own hands stop trying. Treating yourself is multiplied down to a floor of 0.55, a reluctance rather than a block. It applies only when you are the one doing the work. Another player's hands are still their own, so a friend can fix what you cannot make yourself care enough to fix properly.

Past anhedonia 80 you are unreachable, and someone sitting with you stops being able to land any of it.

Anhedonia survives death. It is halved and capped at 40 on respawn, so each death diminishes it. Dying is not a cure. The Fragile Mind trait makes it deepen 45 percent faster.

There are two off switches and they do very different things.

/doom off is the whole-condition escape hatch and it is a deliberate two-step for the player themselves. Typing /doom off alone explains that being Doomed is meant to be permanent and tells you the real command. /doom off confirm renounces it: the body is made whole, every vital and wound resets, the body simulation switches off, and you stand back up as a clean vanilla player. An operator can lift it from others with /doom off <players> at permission level 2. On someone who is not currently Doomed it is a no-op, so a Corebound graduate keeps their flag through it.

The server option enableDespair is narrower. With it false, anhedonia is forced to zero and kept there, any lapse pose is cleared, the vigil is dropped, and the spiral's own state - the episode tier, the lockout, the stillness timer, the antidepressant course - all reset to neutral. Anhedonia is zeroed specifically because it now survives death, and with despair off it would otherwise be the one state in the mod that literally could not be removed by any means. SSRI tolerance is deliberately kept, because wiping an overuse penalty with a config toggle would be the exploit.

Happiness and mood keep running with despair off. They belong to the whole simulation rather than to this system, so the refusal curve, the speed cap and the energy burn all still apply.

The purple depression veil and its tendril overlay are gated on the same flag, and so is the tablet's psychological section, which reports DISABLED. The framebuffer shader's despair channels - the gentle colour drain that onsets the moment mood goes negative, and the harsher wobble and jaundiced grade above mood -25 - are computed from mood alone and run regardless of the flag.

For testing, /doomdespair skin, /doomdespair eye and /doomdespair violent force an episode at permission level 2, bypassing both the trigger and the lockout.

The reluctance is applied in one place: TreatmentService multiplies the normalised treatment quality by Anhedonia.selfCareMult when the healer and the patient are the same player, so every wound-closing action in that domain reads this number. Injury and Treatment

Antidepressants and opiates

The antidepressant is a course, not a pill. One dose loads 20 into a depot and starts a 14400 tick onset clock - twelve real minutes during which it does absolutely nothing. Swallowing more inside the onset window loads more depot and leaves the wait exactly as long.

Once it takes hold the effective dose is depot minus tolerance. Tolerance rises at 0.05 per second while dosed and falls at 0.02 per second while clean, so chain-eating the bottle stops working inside one session. The depot itself decays at 0.012 per second.

What it hands over is small: a raw happiness lift of up to 0.022 per second, applied raw so the numbness it is treating cannot blunt it to nothing. The real payload is that an active course halves the rate at which anhedonia builds. It does not climb for you. It stops the ground giving way while you climb.

Opiates run the other way, and nobody tells you. While smoothed opiate reception is above 25, anhedonia gains an extra 0.012 per second, up to a ceiling of 70. A habit alone can carry a character to numb-but-not-hollow and no further. Analgesia is untouched, which is exactly why it stays worth taking, and that is the trap: the fog you are dosing for is the thing making feeling harder.

Nicotine withdrawal is a flat subtraction from derived mood by dependence stage: 4, 9, 16 and 25 points. It is present only while nicotine is absent and vanishes when you smoke, so it pulls on mood reversibly rather than draining the baseline.

Mindwipe refuses a sound mind. It goes down only if happiness is at or below -50, or trauma is at least 5, or stroke is at least 5. When it does, it zeroes trauma, stroke, mood and every limb's pain, wipes learned Intelligence, and drops the character unconscious.

The spiral reads getActualOpiateReception, the same smoothed reception the opiate system computes for analgesia and withdrawal, so tolerance chasing over there quietly sets the anhedonia floor over here. Drugs and Pharmacology

The climb out

Three things bring anhedonia down, and one of them takes another person.

The routine scores four daily anchors once per dawn, tracked off the character's own stored day number so joining mid-day or standing in a dimension with no day cycle still behaves. Wash means getting dirtiness to 20 or below at some point today. Eat means eating something that was worth eating. Rest means a real night in a bed. Tend means treating a wound, yours or someone else's, or spending 300 seconds near another person. The dawn payout by score is +4, 0, -1, -3, -6 anhedonia for zero through four anchors, plus a small raw mood gain of +2 or +4 at three or four. Only a wholly empty day charges you.

A kept streak doubles the relief: at three or more anchors the streak grows, and at seven days each good day digs twice as far out. The deficit is never streak-scaled, so a long streak cannot be spent as a licence to stop, and a wholly empty day resets it.

The voluntary sit is the fifth anchor. Crouch, still, for 160 ticks - eight seconds - and the character sits down deliberately. While held it bleeds anhedonia at 0.06 per second, hard-capped at 9 per day, so about two and a half minutes of sitting is the whole day's worth.

The vigil takes two people. A second player has to crouch within 4 blocks with an empty main hand, keep the patient in line of sight at a facing dot of 0.85 or better, and stay there for 600 ticks - thirty real seconds - while the patient's mood is below -60. Then the patient's mood climbs at 0.55 per second and their anhedonia falls at 0.01 per second, both raw. It costs the comforter 0.10 happiness per second. A comforter whose own mood is at or below -25 has nothing to give, though the freeze on the patient's self-harm spiral still applies. It saturates hard: five minutes of accumulated vigil decays the rate to 15 percent.

Two of the four anchors are owned elsewhere: WASH samples dirtiness at or below 20 every tick, and EAT is marked from FoodItem only when that food's configured mood value is positive, so calories alone never count. Needs and Survival

FRAGMENT 05-C - VIGIL, NO RESPONSE

SUMMARY: A second player crouched within four blocks with an empty main hand and held the look past 600 ticks. The vigil armed. The patient was sitting at anhedonia 82.

RESPONSE: One line went to the comforter: "They don't look up." No mood moved. No numbness came off. The broadcast slump did not lift, so nobody else in render distance saw anything change either. The comforter's own happiness was debited at 0.10 per second for as long as they stayed down.

FINAL NOTE: The freeze on the self-harm ladder had already applied, one branch earlier, before the unreachable check. The line fires only on the arming pass. Stay another ten minutes and the game says nothing further while continuing to take the payment.

assets/doomedmatu/lang/en_us.json, key message.doomedmatu.vigil.unreachable; body/VigilHandler.java, the Anhedonia.unreachable branch.

Trauma

Trauma is a separate 0 to 100 value that feeds mood at 0.525 a point. It is carried by the character rather than by any limb, which puts it out of reach of every dressing in the mod.

It accrues while adrenaline-masked average pain is above 50 and the character is conscious, at pain times 0.0034 per second. At pain 100 that is a third of a point per second. Outside those conditions it decays at one fifteenth of a point per second, which is one point every fifteen seconds, and that rate is the only rate there is.

Dying adds 10 trauma, but only up to a soft cap of 60. A death cannot push you past that. Pain can. Death also clamps happiness to at most -10, with a floor of -35, so you never respawn cheerful and never respawn at the bottom.

Eating human flesh adds 8 trauma for the first meal and 1.5 more for each previous one, capped at 24 per meal, and costs 22 mood plus 3 per previous meal, capped at 52. The counter is persistent and survives death, so repetition makes it worse rather than cheaper.

Dismemberment adds trauma scaled by the tool. Watching an organ harvested does too, through the corpse-witness path, which costs 3.5 mood and 6 sickness scaled by a desensitisation multiplier that shrinks by 10 percent each time - gore stops landing after about nine bodies.

The moodle tiers are trauma above 25, above 45 and above 80. The last one matters mechanically: above trauma 80 the character stops speaking entirely. Silence from a badly traumatised body is the system working.

C2SHarvestOrganPacket calls seeCorpse on the surgeon and on every other Doomed player within 8 blocks, so an organ harvest bills the whole room the 3.5 mood and 6 sickness and advances everybody's desensitisation multiplier by a tenth. Organs

The despair ladder

The self-harm ladder has three rungs and the lowest one barely registers as an event.

Scratching starts at mood -45. Each tick rolls a chance that scales from nothing at the threshold up to about one in a thousand at mood -90, which is roughly once every fifty seconds at the worst. It only ever picks a wound that is already open and untended: a limb that is still attached, unstitched, and either bleeding or carrying a deep wound. Each scratch adds 2.5 bleed, removes 1.5 skin health and adds 4 pain. The damage is in the drip rather than the hit, and stitching a wound removes it from the pool permanently.

The episode spiral starts at mood -70 and needs stillness. A timer builds while the character is conscious above 20 and moving less than 0.05 blocks per tick horizontally. It builds at 2.5 per second below mood -75, and 1.875 per second between -70 and -75, and it fires at 30. That is about twelve seconds of standing still at the bottom, or sixteen higher up. Moving bleeds it back at 5 to 7.5 per second, so a step is a genuine reset.

Three things stop the entire ladder dead, scratching included. A vigil held on you freezes it. So does a lapse, because the stillness the spiral watches for is exactly the stillness a lapse is made of. So does a post-episode lockout, for as long as it counts down.

You can hear it coming. The dread drone swells with the same windup the server is counting, and at windup 28 - two points under the trigger - a sharp sting fires and the drone cuts to dead air for 0.7 seconds. The screen darkens with it: a black fill ramps in from windup 20. Below mood -90 a separate radial vignette closes in from the edges even while you are fully conscious.

Stand still for 100 ticks with mood at or below -45 and the character stops holding themselves together. Their head goes down, or they sit on the ground, or they put their hands over their face, or they wrap their arms around themselves.

The lapse charges nothing. Health, stamina, speed and any action in progress all carry on untouched. It ends the instant you move, and the pose eases back out over about a tenth of a second, so the character answers immediately.

The idle check reads more than position. Sprinting, swimming, elytra flight and riding all disqualify, and so does having a Doomed screen open - a player forty seconds into suturing their own thigh is idle by any movement test, and a character who slumps over mid-surgery would be a bug. Consciousness above 20 is required, and a downed character is excluded.

Which shape a character falls into is fixed per character rather than random. Below anhedonia 45 it is only the head going down. Above it, the player UUID decides permanently between sitting, hands to the face, and arms wrapped, so a given character reads as having their own way of doing this.

Everybody in render distance sees it, because the pose rides the broadcast posture channel rather than sitting as a local effect. That channel also carries the ordinary slump, which is the worst of pain over 100, negative happiness over 100, low consciousness and stroke. A vigil held on you multiplies the despair half of that by 0.4, so your head visibly comes back up for the whole server. Other people can see that someone is sitting with you.

Every rung is paid in blood - 2.5 bleed per scratch onto a wound that was already open, 6 to 10 for a standard episode, 45 to 60 for a severe one and 60 to 90 plus another 20 for the raked face - all in the same 0 to 100 bleed units the circulation model drains from. Blood and Circulation

Episodes

When the timer fires, the game checks the inventory first. A plushie carried anywhere in it is destroyed, you gain 15 happiness raw, and a 240 second lockout starts. No harm at all. This is the only pre-emptive counter to an episode and nothing in game mentions that it exists.

Otherwise the tier is chosen by mood. Above -90 it is a standard skin episode: one cut on a random limb other than the head or an eye, costing 35 skin health, 13 muscle, 6 to 10 bleed and 20 to 30 pain, returning 8 happiness raw and a 180 second lockout.

Below -90 it is severe. If mood is at or below -94, an eye is still present, and a coin flip comes up, an eye episode runs. With both eyes intact this becomes the violent variant: the face is raked at least ten times, head skin goes to zero, head pain goes to 100, the head takes 60 to 90 bleed plus another 20, adrenaline jumps 50, and exactly one random eye is removed. Never both. Otherwise the severe skin variant takes a major limb for 70 skin, 30 muscle, 45 to 60 bleed and 25 to 35 pain. Severe episodes carry a 300 second lockout.

The relief numbers were deliberately raised above the source values - 22 for a severe skin episode and 26 for an eye - and all of them are applied raw, bypassing the anhedonia reward gate. Scaled, self-harm would be the most reward-efficient action available to a numb body.

The episode itself is a full-screen minigame that runs to a conclusion whatever you do. A clawed hand chases your cursor and jitters. You resist by clicking, but each click only kicks the hand harder, and after about fifteen clicks it breaks and a cut lands. Sit there and the hand descends on its own every 0.8 seconds. The severe skin tier cascades five cuts.

FRAGMENT 07-A - TOAST DURING AN EPISODE

SUMMARY: Mood -96, an eye still present, the coin flip came up. The violent variant ran: ten face rakes, head skin to zero, head pain to 100, one eye removed.

RESPONSE: DoomedAdvancements.tick watches the state and not the cause, so isEyeGone read true on the next body tick and awarded eye_lost. Its display block carries "title": "You'll Shoot Your Eye Out" and "announce_to_chat": true. Every player on the server got the line.

FINAL NOTE: The advancement was written for shrapnel and a Neural Booster. The grant path has no way to tell those apart from a despair episode, and nothing in the record shows the overlap was weighed when the episode tiers were tuned.

data/doomedmatu/advancements/eye_lost.json; body/DoomedAdvancements.java, the isEyeGone check in tick(); body/DespairHandler.java, TIER_VIOLENT.

Speech

The character talks to themselves. A shared cooldown advances every tick while conscious, and the game walks a fixed priority list of about thirty-three conditions, firing the first one whose condition holds and whose own cooldown has elapsed. Severe lines sit at the top and re-fire soonest: agony at pain above 80 with a 100 tick cooldown, suffocation below respiration 6 at 160, and the dying line at 240. Ordinary complaints sit at 600 to 2400 ticks. Feeling good is deliberately last in the walk and carries the longest silence of any line at 2400 ticks, and it re-checks the whole body rather than trusting its position.

The same line twice in a row is blocked, with agony, suffocation and the dying line exempt. After 2400 ticks of silence the memory of the last line is forgotten so it can be said again.

Speech is cut off entirely in four states: consciousness at or below 5, brain at or below 50, trauma above 80, or mood below -75. The brain gate is worth noting, because the brain-damage line fires from brain 95 downward and then the character goes silent at 50 - the complaint about not being able to think stops exactly when it becomes true.

Flat affect is the part nobody works out. As anhedonia climbs, the character stops narrating themselves from the bottom of the list up. At anhedonia 40 the comfort complaints go: tired, hungry, thirsty, cold, warm, gloomy, confused, sick, and the two lines about ruined skin and dead muscle. At anhedonia 72 the lines about how you feel go too: miserable, depressed, sad, exhausted, starving, dehydrated, very sick. Being happy is grouped with those, because a numb body can still be having an objectively good day and simply stops being the kind of person who mentions it. What survives is damage and dying. Whatever a body would still scream about is left in.

Hunger complaints are additionally scaled by mood: the thresholds are multiplied by one plus mood times 0.009, so a wretched body only mentions food when it is genuinely starving.

FRAGMENT 09-B - ONE GOOD LINE

SUMMARY: The quip walk reached its final entry with nothing more urgent true. Mood above 45, pain under 10, no bleed at all, hunger and thirst both above 50, sickness at zero, brain at 95 or better. Cooldown 2400 ticks, the longest in the table.

RESPONSE: "Nothing hurts. I'd forgotten that was allowed." The key re-checks the whole body rather than trusting its position in the list, so a player bleeding out cannot fall through to it while a bleed line is still cooling down.

FINAL NOTE: It sits in the FEELING set, which flat affect switches off at anhedonia 72. A body most of the way out of the pit can be having a genuinely good day and never mention it. The author's comment beside it calls happiness the first thing flat affect takes, though in the code the comfort complaints go thirty-two points earlier.

body/Quips.java, the "happy" pool and FEELING_KEYS; body/QuipHandler.java, the "happy" case and FLAT_FEELING_ANHEDONIA.

Brain damage

Text corruption is a purely local render effect keyed off your own brain value. It holds at exactly zero until brain falls to 20 - that is 80 percent brain damage - and then ramps linearly to a per-character replace probability of 0.85 at brain 0. At brain 10 roughly 43 percent of letters and digits are swapped for a symbol from a small punctuation set.

Only letters and digits are corrupted, so spaces and punctuation keep word shape, and formatting codes are skipped so colours survive. It is deterministic by character position, so the same letters corrupt the same way every frame instead of flickering, and the corrupted set grows monotonically as brain falls. The underlying strings are untouched: typing and clicking still work, the text is just hard to read. It is forced off entirely during a Last Stand, because the alarm and the triage line arriving as noise would defeat the whole feature.

Separately, below brain 95 a thirty-second timer rolls a battery of afflictions. Every roll is gated on a random value exceeding brain divided by 100, so at brain 90 each is about 10 percent likely and at brain 10 about 90 percent. A confused shout at 75 percent secondary chance. Reversed movement controls at 80 percent. A fumble that drops your held slot, your offhand and the next hotbar slot at 75 percent each. And a screen flash with a sound if you are conscious above 20.

Collapse is the harsh one and it is gated separately: 0 percent above brain 60, ramping to 40 percent at brain 0. It is telegraphed 100 ticks - about five seconds - ahead with a flash and a cry before the floor comes, and it sets shock to at least 20.

The whole battery is skipped during an active Last Stand.

Brain damage also feeds the framebuffer: chromatic separation ramps at 0.012 per point below 100, and static grain has its own client slider, so it can come down without flattening every other effect.

Threat states

These are the Deep Maw states and they progress in a strict order that admits no skipping.

Impending Doom is proximity only, and it is deliberately independent of sight - stone conceals the animal, not the fact that something enormous is closing through the cave. The level runs from 2 at the outer boundary of the Maw's territory up to 50 at the redline, on a squared closeness curve. Adrenaline is floored between 30 and 68 across that range.

Horrified requires two things at once: the Maw has confirmed you as prey, and you have a real server-clipped line of sight to it. The check ignores where the camera is pointed. It sets the level to 100 and floors adrenaline at 85. Recognition latches for as long as that exact entity remains your active in-range encounter, so leaving the territory and coming back correctly restarts you at Impending Doom.

Focused is earned. You must have dealt at least 10 percent of that specific Maw's maximum health in accepted post-mitigation damage, credited per player and stored on the entity itself. Two players attacking the same Maw, or one player meeting two Maws, progress independently. It replaces Horrified rather than stacking beside it, and floors adrenaline at 90. Hitting anything else earns nothing toward it.

The hidden cost is in mood. Horrified level multiplies your entire derived mood by one minus level times 0.005, so a Horrified 100 halves whatever your mood was. All the aura levels decay by 1 per tick toward zero once you are clear, so a full 100 takes five seconds to bleed off.

Ordinary adrenaline is separate and comes from the proximity handler: three or more hostiles within 12 blocks, or one hostile with max health above 25, floors adrenaline at 45. A hostile with max health of 150 or more within 100 blocks floors it at 80. An arrow passing within 1.65 blocks of your chest floors it at 60, once per second. Remember that adrenaline above 40 costs happiness at 0.02 per second.

The imaginary friend

Taking the Schizophrenia trait gives you a voice. The trait costs zero points on purpose, because nobody has judged it yet - a friend that turns out useful would be a perk handed out as a flaw, and one that turns out miserable would be a flaw nobody could afford.

Which friend is yours is derived from your character UUID, so it never changes, survives death, and is the same answer on every server with the same datapacks. The friend speaks to your action bar rather than to chat, and its voice is sent to you alone at your own position, so anybody standing next to you hears silence. Right now the voice is the whole of it. The trait description promises other people can see yours, and the body and the entity behind that promise have yet to be built.

It will not talk more often than every 900 ticks - 45 seconds - and when it has nothing to react to it goes quiet for somewhere between 45 and 200 seconds.

It reacts to five situations, checked in order: a Deep Maw within 48 blocks, being downed, blood volume below 3.2 litres, stateful happiness at or below -50, and idle. Only one in three idle checks produces a line at all.

The hazard warning lies one time in five, and it lies in both directions. Twenty percent of the time there is no Maw within 48 blocks, it will tell you there is one. Twenty percent of the time there genuinely is one, it says nothing about it and falls through to whatever else is true about your body. It reports what it thinks rather than what it checked. A voice that is always right would be a radar.

Every friend is a single datapack file under data/<namespace>/doomed_imaginary_friends/. One file plus one sound event makes a new character exist with no code and no rebuild, and a resource pack can replace the voice of a friend somebody else wrote. One ships with the mod as the template.

SUBJ-09

Transformation

Doomed asks you two questions before it lets you play, and the answers are permanent for that character. The first is which run you are on: Endless, where the body simulation never ends and never changes you, or C.A. #DR-01, where horns and a tail grow through you across four growth spurts and the run has an ending. The second question is only asked on Endless, and it is what your body is made of - a perk-and-flaw build where perks cost points, flaws pay them, and you start with nothing. This page covers both, plus the Refusal Sequence that closes out a #DR-01 run and the Corebound state on the far side of it.

The two runs

The mode question is asked once per character, on a screen with two buttons: Endless and C.A. #DR-01. It comes before the ritual, and it comes even when the ritual intro is skipped, on the reasoning that skipping a cutscene should quietly decide nothing.

Endless is the health simulation with no ending. Transformation progress stays at zero and the growth spurt scheduler sits idle. No stage ever steps up. The Refusal Sequence and Corebound belong to the other mode entirely. Keep the body alive until it beats you, and that is the whole of the run. It is the default, and it is what most installs are for.

C.A. #DR-01 is the finite run. Progress ticks up while you play, the body changes in four stages, and the arc terminates in the Refusal Sequence and then Corebound. It is also the only mode that can complete the Corebound subclass in the companion RPG mod, since that unlock fires off the transformation finishing.

The gate is one line in the body simulation: the growth spurt scheduler ticks only when the mode transforms. Everything downstream inherits from that. Force-write transformation progress onto an Endless character with a command and it sits where it was written, advancing nowhere.

This is the arc, not the art. The body sprites are a separate cosmetic choice in the Customization panel and both modes leave it alone. Endless keeps the anthro body available, and #DR-01 leaves it optional.

Once you are Corebound the mode is frozen for good. Before that an operator can move a character with /doom mode, and the transformation resumes or stops where it stood.

The budget

An Endless run gets a second screen after the mode question. Two columns: perks in green on the left, flaws in red on the right. Hovering anything shows the flavour line and the exact arithmetic underneath it.

The rule is one sentence. A perk costs points, a flaw gives them back, and the starting budget is zero, so every perk is paid for by agreeing to be worse at something else for the rest of that character's life. The confirm button stays dark while you owe, and it says how much: "You owe 3 - pick a flaw". An empty list is a valid answer, and the button reads "Stay as you are".

Worth stating plainly, because an older version of the system worked differently. Traits were two switches with no budget, on the reasoning that claws and fur each carry their own cost inside themselves. That reasoning collapsed the moment a straight gain like "start with more Intelligence" joined the list, so everything is priced now. The internal costs stayed on top of the point price. Fur is genuinely dangerous when wet whether or not two points were paid for it.

The budget is a server setting. traitStartingBudget defaults to 0. Raise it for a softer run where a perk or two comes free, or set it negative and players start owing flaws before they are allowed in.

The whole system has an off switch too. Disabled, the pick screen is skipped, and a character who already picked keeps the stored mask while every effect goes flat - claws that do not mine, fur that does not insulate, every multiplier back at 1. Switch the option on again and that character's exact build comes back.

Perks

Seven perks, priced 2 to 4 points. Every number below is read by a live handler; nothing on this screen is decorative.

Claws (4) tear into wood and the softer stone family barehanded, at up to 2.2x break speed, and set a floor of 2.5 damage on healthy empty-hand attacks. Both uses blunt the claws.

Fur (2) is the best insulation in the mod while dry and worse than bare skin once soaked. Details below.

Bright (3) starts a character at Intelligence +4. Intelligence gates the hardest surgery in the game and trains slowly, so four free levels are worth three points.

Hardy (3) starts a character at Resilience +4 - stamina regeneration otherwise earned through pain.

Steady Hands (3) cuts the pain tremble in every treatment minigame to 0.55x. The pain stays; only the shake comes down, so stitches and splints land closer to where they were aimed.

Strong Constitution (3) is Immunity +18, on the same 0-100 scale infection is scored against. Wounds take infection less readily and diseases have a harder time getting in.

Warm Blooded (2) accrues frostbite at 0.6x. It buys time before the extremities go, and that is all it buys - the body is no warmer for it.

Bright and Hardy are handled as real experience grants rather than display offsets, and the mod tracks exactly how much bonus experience it handed over, so removing the trait can take back that much and no more.

Fur is a straight line between two numbers rather than a switch. Dry it gives +0.45 insulation, the strongest in the mod. Soaked it gives -0.28, worse than wearing nothing at all. The value interpolates linearly with wetness from 0 to 100, so the crossover where fur stops helping and starts hurting sits near 62 wetness.

The real bite is the time spent on the wrong side of that crossover. Fur dries at 0.55x. Get wet and you stay wet for nearly twice as long as a bare-skinned character standing in the same place.

Two more costs come with the coat, and both are mandatory. Heat pushes in 1.35x harder, since it is a coat that cannot come off in a warm place, and the whole metabolism runs 1.25x, so hunger, thirst and energy all drain faster. Take Drowsy as well and the metabolism multipliers stack: 1.25 times 1.15.

The practical shape is that fur is excellent for cold, dry caving and actively bad for anything involving water, rain or a warm biome. Getting out of the water is half the fix. The drying penalty carries the negative insulation along with you for a long time afterward.

Steady Hands multiplies the tremble inside PainHand, the shared cursor every treatment screen draws from, so bandaging, stitching, arrow extraction, dislocation reduction, amputation and surgery all inherit the same 0.55x. Injury and Treatment

Fur reaches the survival layer at several separate points: TemperatureHandler reads its insulation curve and its heat-gain multiplier, WetnessHandler reads its drying rate, and NeedsHandler folds its metabolism straight into the same term the run's metabolismrate setting scales. Needs and Survival

Flaws

Twelve flaws pay points. One pays nothing yet.

Thirsty (-2) drains thirst 45% faster. Ravenous (-2) does the same to hunger. Drowsy (-2) drains energy 40% faster and runs the whole metabolism 15% hotter, so it costs food and water as well as sleep. Night Terrors (-2) makes a nightmare 2.5x likelier out of a bad sleep.

Brittle Bones (-3) leaves bones tolerating 38% less punishment, so falls other people walk away from break you. Bleeder (-3) clots at 0.55x, which is nearly twice as long bleeding and a bad wound that outruns a bandage. Anaemic (-2) rebuilds red cells at 0.45x; a transfusion still restores the litres, and the breathlessness stays long after. Sickly (-3) is Immunity -20.

Addictive Personality (-2) builds opioid tolerance and nicotine dependence 70% faster, so habits take hold sooner and withdrawal arrives earlier. Fragile Mind (-3) deepens anhedonia 45% faster - the numbness that blunts every good thing and survives your death. Poor Circulation (-2) accrues frostbite 60% faster, and stacks multiplicatively against Warm Blooded if both are somehow taken.

Missing Left Arm (-4) is the largest ordinary payout. Your left upper arm, forearm and hand are biologically absent from the first second. No stump wound, no blood, no gore, no trauma and no chat line - these parts were gone before this body became your problem. The boundary is already healed and socket-ready. That side cannot act until you fit a working prosthetic.

Severed (-5) is the biggest payout in the game. It replaces the status panel with a physical self-examination: you look, touch, test movement, check circulation and count rough vitals, and exact measurements need the WITNESS tablet. Diagnostic moodles you could not have seen or felt are hidden from you.

Schizophrenia costs nothing and pays nothing while it is being judged. It occasionally gives you an imaginary friend, drawn once from your own UUID so it is consistently yours and survives death, and other players who took the trait can see yours. It comments on a Deep Maw within 48 blocks, on being downed, on heavy blood loss and on a collapsed mood. One time in five it is wrong, in both directions. Priced at zero, it sorts into the right-hand flaw column despite paying nothing.

Sickly's -20 is a flat offset on the same 100-point immunity baseline InfectionHandler builds every wound-infection and disease roll against, and Strong Constitution's +18 lands in that identical term from the other direction. Disease and Infection

Addictive Personality is one multiplier read in two places - DrugHandler applies it to the opioid tolerance ramp and CigaretteItem applies it to nicotine gain - so both habits accelerate off a single trait bit. Drugs and Pharmacology

Fragile Mind multiplies Anhedonia's own gain term on the same line the SSRI halving sits on, so it deepens the numbness the psychology layer already tracks instead of running a second one alongside it. Psychology

The imaginary friend's only trigger that reads the world at all is a living Deep Maw inside 48 blocks; everything else it remarks on is your own body, so on a server where the Maw never spawns the friend is talking about you and nothing else. Threats

Claws

Claws want a genuinely empty main hand on a biological hand. A tool always wins the slot, and a prosthetic hand does not qualify.

What they bite into is wood and the softer stone family: logs, planks, wooden slabs and stairs, leaves, dirt, overworld base stone, and the stone ore replaceables. What they can actually harvest is a narrower list, on purpose - logs, planks, wooden slabs and stairs, plus vanilla stone and deepslate exactly. Base-stone tags carry a lot of modded material that must not become free bare-hand drops. Scratching faster and being allowed to keep the block are two different permissions.

Speed scales with condition rather than sitting flat. Condition is 0 at or below 15 claw health and reaches 1 at 100, so the 2.2x figure is the best case on perfectly intact claws, and worn claws are worth much less. The same condition value sets the empty-hand damage baseline, sliding from vanilla's 1 up to 2.5. That is a floor rather than a bonus, so Strength effects and critical hits still stack on top.

Every block broken this way costs keratin: 1.4 per rock, 0.5 per wood, charged only when the block actually breaks, so an abandoned swing is free. Every accepted punch costs 0.35, plus up to another 0.65 against armoured targets.

Regrowth runs on its own at 0.25 per second at full nourishment, scaled down by hunger to a floor of 0.2x, multiplied by 1.4 while asleep and by 3 during a keratin booster window. A full 100ml keratin booster syringe buys 2800 seconds of that boost, and dosing while more than 3600 seconds are already banked delivers only a tenth of the new dose.

So this is a rate limit, not a wall. Claw your way through a mountain and you arrive on the far side unable to defend yourself. Leave them alone and they come back. The HUD warns at two tiers: Worn Claws under 60, Broken Claws under 25.

The scratch list is vanilla block tags, but the harvest list is those tags plus Blocks.STONE and Blocks.DEEPSLATE named one at a time, so a modded stone that joins BASE_STONE_OVERWORLD breaks faster under claws and still yields nothing. Items, World and Trade

Claw regrowth time is a syringe field like any other - DrugService's KERATINBOOSTER case adds 28 seconds per millilitre and cuts a fresh dose to a tenth once more than 3600 seconds are already banked. Drugs and Pharmacology

The pick screen

The trait screen is a hard gate on entering the run. On an Endless character with traits enabled the server holds the Doomed condition back until the build is confirmed. Close the screen without answering and you are simply not Doomed yet.

Within a life the answer is final. Running the /doom traits command after confirming gets you "You already answered. This body is what it is." The server re-validates the mask independently of the screen, so an unpaid build fails there too.

Death re-opens the question, and only the answered flag clears. The mask itself survives, so the screen comes back with the previous build already ticked, and confirming it unchanged keeps exactly what was there. Change it and the anatomy follows: a fitted prosthetic is dropped at your feet before a fresh biological arm is restored, so switching away from Missing Left Arm cannot silently delete equipment.

A C.A. #DR-01 run never sees this screen, on entry or on death. That arc decides what the body becomes on its own, and a #DR-01 character's effective trait mask is zero regardless of what is stored.

One more case. A server running autoDoomOnJoin in its silent setting applies the configured mode and locks it without asking anything, and on Endless that means the neutral zero-point body with no perks and no flaws - a setting that promises no questions must not invent a build for you. A later death still lets you pick normally.

If a balance change or a schema change ever makes a confirmed build invalid, the editor comes back rather than grandfathering it, and your existing anatomy is left untouched until you confirm its replacement.

Timeline

Progress is measured in active playtime, one tick per tick, while you are Doomed and on a C.A. #DR-01 run. The shipped default is 168 hours - one full week of active play. paceFactor is not in the calculation, so a server that has sped up or slowed down the rest of the body simulation has left this exactly where it found it.

The four growth spurts fire at 25%, 50%, 75% and 100% of that timeline. At the default that is roughly 42 hours of playtime between each one. A spurt is a short window rather than a phase you live in, so the shape of a #DR-01 run is 42 hours of nothing followed by 30 to 75 seconds of everything, four times over.

One threshold sits off the milestone grid. Past 95% progress, a blow that would kill you diverts into the Refusal Sequence instead. The fourth spurt only begins at 100%, so without that rule a death at 96% would be an ordinary death that wiped the whole week.

The duration is configurable between 0.25 and 10000 hours. Changing it reinterprets the stored progress of every existing character against the new timeline, so lowering it can make the next spurt begin immediately.

Horns and tail render at the stage reached, and the stage steps up at the start of each spurt rather than at the end. The horns grow from 0.400 scale at stage 1 to 0.650 at stage 4. The tail renders 40% of its segments at stage 1, 65% at stage 2, 85% at stage 3 and all of them at stage 4. A client-side hideTransformModels option suppresses both layers and touches nothing mechanical.

Growth spurts

A spurt announces itself. Stage 1 is "Your skull splits - something is forcing its way out." Stage 4 is "Everything fails at once. This kills you - unless you endure it."

The window lengths escalate: 30 seconds, then 45, then 60, then 75. Pain follows a sine envelope across the window, rising from nothing to the stage peak at the halfway point and back down, peaking at 45, 70, 92 and 100. Happiness sheds continuously while the window is open, at 0.03, 0.06, 0.10 and 0.16 per tick.

Bleed pulses land every 30 ticks at both the head, where the horns are coming out, and the abdomen, where the tail is reshaping the lower spine, once the envelope is past 0.15. The per-pulse amount is 6, 12, 20 and 30 by stage, and the same amount is added to that limb's pain.

From stage 2 onward, spikes erupt and impale you. One salvo fires the instant the spurt begins, then more every 60 ticks while the envelope is past 0.2. Each event hits 1 to 3 random body segments with punctures worth 30 to 55 skin damage before armour, floors your shock at 50 times the stage intensity and your adrenaline at 90, and makes you scream. A stage 4 window contains roughly 23 of these.

Worth knowing before you plan around it: the spike table leaves out the head. The fiction says a horn is coming through your skull, and the wound lands on a random shin. Treating during a spurt is a poor plan for a similar reason - bleed pulses reopen two sites every 1.5 seconds and one full bandage wrap is 144 crank actions on a single limb, so the intended play inside a window is to survive it rather than to keep up with it.

Stages 1 through 3 leave the leftover transform pain to decay at 0.08 per tick between windows. Stage 4 ends only one way.

One item exists to make a spurt survivable. Right-click it and a five minute window opens during which the entire ordeal is cut to a quarter of its bite.

The quarter multiplier covers a lot. Transform pain, the mood loss per tick and the bleed pulses are all multiplied by 0.25. The spike eruptions are switched off outright rather than scaled down, including the opening salvo at the start of a stage 2 or higher spurt. The stage 3 shock climb and the stage 4 consciousness drain are suppressed the same way, entirely.

The timing detail that matters: the suppressant window is checked continuously, so a dose taken partway through a window helps from that moment onward and leaves everything that has already landed exactly where it landed. The opening spike salvo is decided on the instant the spurt begins. Skipping that salvo means already being dosed when the announcement appears.

The clock burns down whether a spurt is running or not, so a dose taken 42 hours before the next milestone is a wasted dose. Five minutes covers any single window with room to spare, since the longest is 75 seconds.

On a player who is not currently Doomed it does nothing, and it says so: "The suppressant does nothing to you."

Suppressant appears in the medical loot pool at the common weight, one per pull, so it comes out of medical caches rather than a recipe. Bank it as soon as you know you are on a #DR-01 run. Nothing else in the system mitigates any of this.

The spike eruptions go through TrapEffects.impaleSpurt, which returns immediately when the trapsDamage option is false, so a server that disarms its bear traps and caltrops silently disarms every growth spurt as well - and that option's own comment lists nothing but contact hazards. Threats

Transform pain reaches PainHandler as one candidate inside a maximum rather than as an added term, and the spurt's per-pulse limb pain pins the head and abdomen at the 100 cap from stage 2 onward, so the aggregate returns 100 whichever stage peak the scheduler wrote. Pain, Consciousness and Death

FRAGMENT 09-D - SPURT ONSET BANNER, STAGE 4

SUMMARY: The fourth and final growth spurt opens with a banner sent from the server the instant the window begins. The authored line is en_us.json key doomedmatu.alert.spurt.4: "Everything fails at once. This kills you - unless you endure it."

RESPONSE: Inside the window the scheduler raises shock by 0.16 per tick and drains consciousness by 0.05 per tick, both gated on the pain envelope. ConsciousnessHandler runs seventeen lines later in the same tick, bleeds shock off at 10 a second and eases consciousness back at 3 a second toward a target of 100 on an unbled body. Net movement on both channels is the wrong way.

FINAL NOTE: The window runs its 75 seconds, expires, and calls RefusalService.begin. Whatever else stage 4 was meant to be, the banner is the part of "this kills you" that reaches the player intact.

res/assets/doomedmatu/lang/en_us.json:32; GrowthSpurtScheduler.java:150-156 against BodySimulation.java:230 and :247

Divergence

The transformation has a medical consequence outside the spurt windows, and it is easy to miss because nothing announces it.

As you change, your blood runs from red toward orange. The colour is driven by a factor derived from your stage: 0 at untransformed, 0.25 at stage 1, and 1 once you are stage 4 or Corebound. It shows in the particle bursts and in the ground pools you leave behind, and each character's blood reflects only their own transformation.

The transfusion system reads the same factor. Below 0.25 divergence - everything up to and including stage 1 - banked human blood still runs clean in you. Past that point a human blood bag adds extra hemolytic reaction severity, scaling linearly to a maximum of 70 at full transformation. For reference, that sits between the 45 of a rhesus mismatch and the 100 of a full ABO clash, so a wrong blood type on top of divergence is meaningfully worse than divergence alone.

This is deliberately a penalty rather than a hard block. The volume still goes in and you pay for it afterward. Saline is untyped and completely unaffected, so a transformed player always keeps a volume expander even once human blood has stopped fitting.

The practical version: from stage 2 onward, treat blood bags as a last resort and carry saline. From stage 3 onward the penalty is severe enough that a transfusion is a decision rather than a first-aid step.

Divergence is added to the ABO and Rh clash rather than replacing it, and DrugService clamps the sum at the same 100 ceiling before handing it to TransfusionReactionHandler, so a transformed body is scored on the exact severity axis a wrong bag is scored on. Blood and Circulation

FRAGMENT 12-B - TRANSFUSION NOTICE, DIVERGENT RECIPIENT

SUMMARY: A bag of correctly typed human blood pushed into a body past stage 1 puts one line on the action bar of the patient and, in co-op, of the person holding the needle: "The blood is right. The body is not - it is rejecting human blood."

RESPONSE: The branch fires only where the ABO and Rh clash scores zero and divergence does not. The volume still went in. TransfusionReactionHandler starts on the summed severity and banks the hemolysis debt against what was delivered, so the reaction arrives after the transfusion rather than in place of it.

FINAL NOTE: The comment above these four branches records that they shipped empty - wrong blood went into a friend and nothing said anything at all. The line exists because somebody had to be told which incompatibility it was, or a correctly labelled bag failing reads as a bug.

~/body/DrugService.java:963-978, reached through DoomedBlood.divergenceSeverity

The Refusal Sequence

When the change finishes killing you, the run ends in a sequence you sit through and then type your way out of, rather than in a death screen.

It starts on either of two triggers: a lethal blow landing while progress is past 95%, or the fourth spurt's window running out at 100%. In both cases the server locks you out of death first - health is set back to maximum and nothing is allowed to finish you mid-sentence.

The first phase runs 57 seconds and it cannot be skipped, paused or exited. Escape is consumed, mouse clicks are consumed, there is no button. Text, alarms, screen fractures and interface failures pile up without stopping. Then it cuts to black and holds silence for nearly seven seconds, and the rest of the sequence is quiet lines typing themselves out one at a time.

The gate at the end is literal. A prompt reads I REFUSE DEATH with a cursor under it, and you physically type it. Wrong keys do nothing at all - no error, no reset, it simply waits. Backspace works. Enter with the phrase complete sends the confirmation.

Nothing in this times out. The world waits. Disconnect partway through and the sequence re-opens the next time you log in, because the completed fourth spurt is saved state while the pending flag is not.

One accessibility note, stated here because the sequence itself no longer states it. Every flash, strobe, static field and inversion in phase 1 multiplies by the vision intensity client setting, with no floor anywhere, so setting it to zero genuinely removes the flashing. Screen shake answers to the shake slider's strength and not only its on/off. The sequence used to open on a card explaining this and the card was removed, so the settings are the whole of the promise now.

When you confirm, every player online gets a white dome from your coordinates, a hard screen shake and a single chord, across dimensions, and the server broadcasts one line: "Something refused to be forgotten."

A death during stages 1 through 3 is a real death. Items drop under the server gamerules and the normal respawn flow takes over, exactly like any other Doomed death.

What it costs on top of the ordinary death is the transformation. On respawn, progress ticks, transform stage, spurts completed, the active spurt window, transform pain and any banked suppressant all go back to zero. The horns and the tail are gone, and the week starts over from nothing.

The Corebound flag is the one thing death never resets. It persists forever.

This is what the 95% rule is for. Dying at 96% progress - 161 hours in, past every spurt but the last - would otherwise be an ordinary death that wiped all of it. Past 95%, the killing blow diverts into the Refusal Sequence and the run ends the way it is supposed to.

Under 95%, the progress has no protection at all. Last Stand is a floor on your capabilities and lets the wipe straight through, and so does everything else.

A fresh life is also a fresh clinical file. Your case notes are closed, composed once, filed as a death certificate you can still read later, and a new ledger opens. Skills carry across the death. The body does not.

FRAGMENT 14-A - ADVANCEMENT TEXT, ANNIHILATION

SUMMARY: On the tick a player confirms the refusal, the server awards doomedmatu:annihilation to them and announces it to everyone. The advancement carries the challenge frame, a crying-obsidian icon, and one line of description: "Every lethal blow, refused."

RESPONSE: The clamp underneath it substitutes 1.0 damage - half a heart - for any blow that would otherwise be fatal. At or below half a heart the clamp still fires, and 1.0 still kills. The effect has no tooltip. The description was never corrected.

FINAL NOTE: The line is true of every lethal blow except the ones taken at the bottom of the health bar, and those are the only ones a player is likely to be taking. The first person to learn the difference learns it from a death screen, with a permanent advancement in their book saying otherwise.

res/data/doomedmatu/advancements/annihilation.json (announce_to_chat true); the substitution is CoreboundPerks.ANNIHILATION_LETHAL_FLOOR = 1.0f

Corebound

Confirming the refusal splits you off from the run. You are a vanilla player again with every Doomed system switched off, and you keep the horns and the tail as proof.

The exit is thorough on purpose. Every vital, wound and transformation scalar is cleared to healthy defaults, the body simulation stops ticking for that player, they are stood back up at full vanilla health with fire out and effects gone, and the movement-speed and attack-speed modifiers the simulation leaves behind are stripped. Those modifiers are the reason the cleanup exists at all: a freed player used to keep a near-zero movement speed that also pinched their field of view, forever, because the handlers that would have cleared it had already stopped running.

Two permanent effects are granted, both infinite, both with particles suppressed so nobody wears a potion cloud for the rest of the save.

Spite denies harmful effects at the door. Anything in the HARMFUL category is refused before it applies. Effects already running stay running. Beneficial effects pass through untouched, and milk cannot remove Spite itself.

Annihilation does two things. Outgoing, you hit 25% harder, applied last so every other modifier has already had its say. Incoming, a blow that would kill you leaves you on half a heart instead - unless you are already at half a heart or less, in which case it kills you normally. The mortality is deliberate. Annihilation buys one more decision in every fight, not immunity.

Both effects are re-applied on login and on respawn, since vanilla death clears effects and Corebound is earned rather than granted.

The flag persists forever. It survives death, /doom mode cannot change it, and /doom off does nothing to it because that command only acts on players who are currently Doomed. If the Fantastic RPG mod is installed, the Corebound class completes at the same moment. Two advancements land together: survived Doomed, and gained Annihilation.

CHEM-01

The Chemistry Engine

Doomed's chemistry is a datapack-driven production chain run by eight unit-operation machines plus the Reactor. A batch is not a black box that swallows items and spits out a product: the machine locks onto one recipe, meters its energy tick by tick, records the temperature it actually ran at and every time it stopped, and rolls the finished grade and volume from that history. Nothing you make is guaranteed to be as good as the recipe says it can be, and the machine will never tell you the true number - only a measured estimate with an error bar. This page covers how a batch runs, what heat does, how grade propagates down a chain, how equipment fouls, and every way a batch can be ruined.

The batch

A progress bar is the smallest part of it. When the loaded inputs match a recipe the machine opens a batch: it records that recipe's structural key and its index in the table, and stays committed to that recipe until the batch finishes or is cancelled. Progress, energy already spent, the running thermal average, the number of ticks spent below and above the operating band, the interruption count and whether an incident has happened all persist with the block.

Inputs stay where they are. They sit in the slots and the tank and are taken on the tick the batch completes. Nothing is committed until then, so a batch at zero progress can still be re-selected freely - load a better-matching recipe before the first tick of real work and the machine switches to it. The first working tick locks the recipe.

Energy is metered exactly. The recipe's total FE is divided across its ticks with a cumulative ceiling calculation, so the batch pays precisely the recipe's total by the time it completes, no more and no less, however many times it stopped and restarted. A tick whose fractional cost rounds to zero still requires the machine to hold at least 1 FE. An empty buffer always stalls.

Mining a machine keeps the batch. The loot table copies the items, both tanks, the energy, the side configuration, the equipment condition and the batch itself onto the dropped block.

The equipment

Eight unit-operation machines share one block entity and one recipe table, filtered by machine type. Each has two input item slots, one output item slot, a 4,000 mB input tank, a 4,000 mB output tank and a 32,000 FE buffer that accepts up to 1,024 FE per tick. The Reactor is its own class: three input slots, a 64,000 FE buffer accepting 2,048 FE per tick, and a drug fluid as its only product. It has no item output slot at all.

The Drying Oven, the Kiln and the Recrystallizer show no fluid bars, since none of their recipes use fluid. They also never auto-pull a fluid, which keeps their input tanks clear of something they could never consume.

The input tank accepts only fluids some recipe for that machine consumes. The input slots take only items some recipe uses, reject the output slot entirely, and reject an ingredient already sitting in the other input slot. That last rule has a history. Forge fills the first slot to a full stack before touching the second, so a chest holding more than a stack of one ingredient used to load both slots with it and starve every two-ingredient recipe. The Recrystallizer, whose recipes are all two-ingredient, died outright.

Slot filtering compares item identity and ignores NBT. Every solid chemistry intermediate carries per-batch grade and contamination tags, so two lots of the same reagent from different batches are different stacks and will not merge in an inventory.

All eight unit operations and the Reactor sit on the ordinary Doomed machine chassis and share its per-face routing and its auto push and pull, so the machines record covers how material actually gets into one of these and back out. Machines, Power and Fluids

Heat

Every server tick a machine reads the best heat source among its six face-adjacent blocks. Tier 1 is a lit Brazier or vanilla open heat - fire, lava, magma or a lit campfire. Tier 2 is one running RF Heater. Two running Heaters make tier 3. Three or more make tier 4, which is over-fired and sits above every recipe's safe ceiling.

Each recipe carries a heat_min and a heat_max. Below heat_min the recipe is skipped over entirely and the console reads NEEDS HEAT. Inside the band it runs. Above heat_max it also runs, and it is being damaged.

The band grades rather than gates. Heat quality runs from 0 at heat_min to 1 at heat_max, and everything short of the ceiling costs something. The bare minimum of the band is the worst legal place to run a batch.

Default bands by machine, used when a datapack row leaves them alone: Kiln 2 to 3, Still 1 to 2, Drying Oven 1 to 2, Evaporator 1 to 3, Recrystallizer 0 to 2, Fermenter 0 to 0, Slaking Vat and Filter Press 0 to 3. The Reactor is fixed at 1 to 3 in code and ignores the datapack fields.

The practical readings: a Kiln needs at least one RF Heater to run at all and two to run well. A Still, Drying Oven or Recrystallizer wants exactly one Heater. An Evaporator or a Reactor wants two. A Fermenter wants nothing at all - see below. A machine reports its heat tier to a comparator as 0, 4, 8, 12 or 15, so 12 is the back-off threshold and 15 alone means over-fired.

Thermal cost

Grade is rolled at completion out of the whole batch rather than the temperature at the last tick. Four separate thermal penalties stack.

Heat quality below 1 costs up to 12 points of purity. That is the price of running at the bottom of the band rather than the top, and it lands even on a batch that never left the band.

Overshoot above heat_max costs 16 purity per whole tier above the ceiling, taken against the batch's average heat.

Time spent below the band costs up to 10 more purity, scaled by what fraction of the recipe's duration was spent cold. Time spent above the band costs up to 20, scaled the same way. Both fractions saturate against the recipe's total tick count.

On top of all of that, a random jitter of plus or minus 3 is added. The jitter is the only term that can push a number up, and it is small.

The Filter Press and the Slaking Vat are exempt. Their recipes are heat-insensitive, so the thermal terms are skipped entirely and they roll as though they ran perfectly in band.

The worked case that matters most is the Fermenter. Its band is 0 to 0, so heat quality reaches 1 only when the machine is genuinely cold. Put a lit brazier, a campfire or lava next to a Fermenter and every batch takes the 12-point band penalty, a 16-point overshoot penalty, and up to a further 20 for above-band residence. Roughly 48 points of purity off a nominal 100. The mash carries that number forward into the Still and then into every solvent made from it.

Item output counts are fixed. A recipe that makes two activated charcoal always makes two, and what varies on a solid is its grade rather than its amount.

Fluid yield varies, and only on the Fermenter, the Still and the Evaporator, or on any fluid recipe that declares a nominal purity. Everything else deposits its nominal millibucket figure exactly.

Where yield does vary it starts at a floor of 75 percent of nominal at the bottom of the heat band and ramps to 100 percent at the ceiling. Overshoot above the ceiling removes a further 22 percent per tier. Full-duration cold residence removes 30 percent, full-duration hot residence removes 40 percent, and each interruption removes 3 percent down to a floor of 65 percent. A jitter of plus or minus 5 percent is applied last.

The roll is capped at the nominal amount, which makes the machine's output-tank room check against nominal a safe upper bound. It has a floor as well: any recipe with a nominal output deposits at least 1 mB. A ruined batch leaves residue in the tank instead of eating its inputs for nothing.

Grade

Every solid chemistry intermediate carries a 0-100 ChemicalGrade tag written when the machine made it. Every drug and process fluid carries a Purity tag on its FluidStack. Untagged legacy or raw material reads as 100, and it counts as an observed grade only once a chemistry machine stamps it.

When a batch starts, the machine reads the lowest observed grade among the inputs the recipe will actually consume - the input tank if the recipe takes a fluid, plus every graded item it will draw from. That is the charge quality. It is re-read freely while progress is 0, so topping the input tank up with purer material before work begins genuinely improves the batch. The first working tick latches it, and a same-recipe substitution afterwards can only lower it.

At completion the rolled grade is capped against the charge quality. A step may recover at most 20 percent of the gap between the charge and 100, and only up to that machine's own recovery allowance: 20 for the Recrystallizer, 12 for the Slaking Vat, 8 for the Filter Press, and 0 for everything else including the Reactor.

That cap is the single most important rule in the system. A dirty feedstock cannot be laundered clean. Recrystallizing 60 percent material returns at most 68, because 20 percent of the 40-point gap is 8. Recrystallizing 20 percent material returns at most 36. The same material through a Drying Oven or a Kiln comes out exactly as it went in, their recovery being zero.

One rolled grade is shared by every product of a batch. Hand-crafting preserves it too: the acetylating reagent and sodium lactate recipes take the lowest grade among their ingredients.

Two machines take a borosilicate flask: the Evaporator and the Reactor. Right-click either with a flask in hand and it is fitted, rather than the console opening.

The flask imposes a purity ceiling on every batch that machine finishes. Fresh glass at 100 condition allows a ceiling of 100. With no glass at all, or fully worn glass, the ceiling is 60 - street grade. Between those it scales linearly.

Condition drops by 4 per completed batch, so a flask lasts about 25 batches.

This is the most easily missed gate in the whole system, because it applies to everything those two machines make rather than to drugs alone. An Evaporator with no flask caps saline, Ringer's solution, iodine and even kelp salt at 60 percent, and that 60 then becomes the charge quality of the next step. The Reactor behaves the same: with an empty flask holder, a nominal 96 percent ceftriaxone recipe still finishes at 60.

The flask is cheap - eight glass around one quartz - and the console reports its condition. Nothing warns you when it runs out.

Stalls

Five stall states, shown on the console as text.

NEEDS HEAT means the heat tier fell below the recipe's minimum. NO POWER means the buffer cannot pay the next tick. OUTPUT BLOCKED means the output slot or tank has no room. BATCH INPUT LOST means an ingredient or the input fluid has gone missing. BATCH MISMATCH is a separate diagnosis: an attached tank has free room and the same fluid but refuses the incoming lot solely because its blendable purity or contamination record differs.

Every transition from running to stalled counts one interruption. Each interruption costs 2 purity, capped at 14 total, and 3 percent of yield down to a floor of 65 percent.

Stalls also continue to sample temperature. A batch left cold and unpowered, or hot with an ingredient missing, keeps accruing below-band and above-band residence exactly as if it were running. One stall is deliberately exempt: OUTPUT_BLOCKED samples heat not at all, because a full buffer on an automated line is a normal state and a Fermenter sitting next to a lit brazier would otherwise rot its own charge while waiting.

Deliberately emptying the recipe's inputs is the cancel gesture. Removing the last of an ingredient while the batch is paused resets the batch outright and loses its progress. Swapping one ingredient for another of the same kind only pauses it.

A recipe that vanishes from the table - a mod or datapack change - cancels the batch rather than bricking the machine, since nothing was reserved.

Incidents

A running machine rolls a hazard check every 10 ticks. The chances are per half-second of exposure rather than per batch.

A flammable step carries a base 0.1 percent chance per roll. An adjacent open flame - a lit brazier, fire, lava, magma or a lit campfire - adds 0.4 percent. Overheating past heat_max adds 0.8 percent. A non-flammable step that is overheating carries 0.15 percent on its own. Across a 30-second run those work out at roughly 6, 26 and 42 percent respectively. An ignition places fire on top of the machine, and a step that is both flammable and overheating adds a small flash blast as well.

The Reactor's high-pressure reactions are treated as violent. A reaction with a pressure rating of 2 or higher, run over an open flame or while overheating, rolls a full detonation at 0.4 percent per roll for the flame and 0.8 percent for the overheat. The blast has a 4-block radius, leaves terrain intact, and applies real wounds and knockback to you through the body sim's explosion path. The two fentanyl routes and the two naloxone routes are the shipped reactions that qualify.

A separate equipment-risk roll covers vessel compatibility and sealed pressure. Chance is the pressure rating times 0.035 percent plus the compatibility excess times 0.075 percent per roll. If either is 2 or more the result is a blast rather than a fire.

Only one incident per batch is possible. It is more than cosmetic: an incident adds four interruption-equivalents, which is 8 purity and roughly 12 percent of yield, whether or not the fire gets put out.

The controlled RF Heater is not an open flame. Using it in place of a brazier removes the largest single ignition term for a Still, an Evaporator or a Reactor.

A Reactor detonation runs the sim's ordinary explosion path rather than a chemistry-specific one, so it sets shock to 100 outright and zeroes consciousness on a head hit - the pain and consciousness record is where the rest of that lands. Pain, Consciousness and Death

Fumes

A running machine emits fumes at a potency set by the recipe or, where the recipe stays silent, by the machine. The Kiln and the Still are worst at 3. The Slaking Vat and the Evaporator sit at 2. The Drying Oven and the Recrystallizer are 1. The Fermenter and the Filter Press emit nothing.

Exposure is scanned every 10 ticks in a 3-block cube around each player. Every running machine within that cube contributes its potency scaled down by distance, and the contributions add up to a bounded ceiling of 5. Solid blocks and bulk liquids block the line entirely, so a wall between you and the machine works.

Open sky halves the concentration. A lit Fume Hood in the same connected airspace cuts it to 12 percent, which is the difference between a workable indoor lab and a room that will kill you. The hood is an RF block drawing 12 FE per tick while lit.

Unprotected, a cloud accrues 0.8 sickness per second per unit of cloud. At 1.5 or above you get movement slowdown, and without safety glasses or a gas mask a dark haze over your vision. At 2.0 or above you get nausea, and the excess above 2.0 starts doing real muscle damage to the thorax at 0.025 per second per unit.

Respiratory protection reduces what reaches the airway and spends filter life doing it. A pack can switch the whole hazard off through the chemFumes config.

Past a breathed cloud of 2.0 the handler reaches into the thorax and subtracts from its muscle health directly, so chemical injury to the chest is stored, projected and healed as an ordinary limb injury - the injuries and treatment record carries it from there. Injury and Treatment

Fouling

Machines remember what they have made. Four numbers persist between batches and across saves.

Residue climbs by 9 per completed batch plus a third of the recipe's fume potency in tenths, so a fume-3 process adds 19 each time. Residue caps at 100.

Microbial load climbs by 16 for a Fermenter batch, 3 for any other wet batch, and 1 for a dry one.

Sterility is pushed down to at most 55 by a wet batch and at most 75 by a dry one.

Calibration drops by 1 per batch, and a drift value random-walks by up to plus or minus 0.35 each time, bounded at plus or minus 12.

These feed straight back into the product. Chemical carryover on the output is the greater of the input's own chemical contamination and 35 percent of the machine's residue, plus 15 per point of vessel compatibility excess. Microbial carryover is the greater of the input's microbial load and 45 percent of the machine's. An injectable product with sterility below 90 has its microbial carryover additionally floored at half the sterility deficit.

Maintenance is done from the console and revalidated server-side. Rinsing consumes one water bucket, clears residue to 0, removes 30 microbial and pushes sterility down to at most 45. Rinsing is washing, and washing makes the sterility reading worse. Sterilizing consumes one bleach and requires residue at 5 or below; on a dirty vessel it fails silently, with no sound and no message. Calibrating costs 750 FE and resets calibration to 100 with near-zero drift. All three refuse to run once a batch is past progress 0.

FRAGMENT 11-C - FIELD JOURNAL, ENTRY "CLEAR"

SUMMARY: A four-page entry the character writes for himself, one page at a time, as he works out that a clean vessel and a safe vessel are different objects. Page one unlocks the first time a rinse takes a heavily fouled vessel down and the sterility reading still sits under 90. Page two unlocks only if he has already written page one and then tries to bleach a vessel with residue still in it - the attempt fails, no bleach is consumed, and the console records "Sterilize blocked: rinse first".

RESPONSE: Page two, in full at the end: "I nearly used the vessel anyway. It had been heated. I had done the serious-looking part. That should have counted for something. It doesn't. Dirt first. Then heat. Sterilizing something filthy only makes hot filth." Page three, written after a successful bleach, notes that the glass looks exactly as it did after rinsing and that he has marked the sterile equipment separately.

FINAL NOTE: Page four is the hot injection site, and it requires page three, which requires page two, which requires page one. Someone who never works out the rinse-then-bleach order can seed an infected puncture with a filthy needle as often as he likes and will never be handed the page explaining what happened. The entry teaches the lesson only to a player who has already learned it.

res/data/doomedmatu/doomed_journal_entries/clear.json, gated by C2SChemistryActionPacket.rinse/sterilize and FieldJournalObservationTracker.observeDirtyInjection

The assay

The machine console never displays the real grade of what it made. Data slot 17 returns -1 permanently, by design - quality is disclosed by a consumed sample rather than by omniscient telemetry.

Pressing ASSAY destroys 10 mB of the output fluid, or one item from the output slot where there is no fluid, and produces an estimate with an error bar.

The reported purity is the true value plus the machine's calibration drift plus a random offset within the uncertainty band. Purity uncertainty is 14, minus 0.55 per point of Intelligence, plus a tenth of the calibration deficit, clamped to between 2 and 22. Contamination uncertainty is 20, minus 0.65 per Intelligence point, plus an eighth of the calibration deficit, clamped between 3 and 30.

Calibration drift is a bias, not noise. A drifted instrument reports consistently high or low by up to 12 points, and nothing on screen distinguishes that from the real number. Calibrating fixes the instrument. It never touches the reaction.

The reading is stamped onto whatever remains in the output, so an assayed item carries its estimate in its tooltip after it leaves the machine. Any change to the sampled material voids it: completing another batch into the same output slot, or blending a new lot into a tank, clears the assay. An item with a grade tag but no assay shows "Assay: untested".

Chemistry trains Intelligence, which is what narrows the interval. Hand-crafting a tagged reagent awards a base of 8, a machine synthesis awards 12 to the nearest player within 8 blocks, and each repeat of the same product yields 82 percent of the last, floored at 8 percent of base.

FRAGMENT 12-A - CONSOLE TELEMETRY, SLOT 17

SUMMARY: A machine console publishes a block of numbered readings to the screen - energy, tank levels, heat tier, progress, stall code, residue, sterility, calibration. Slot 17 is where the finished batch's quality would go. It returns -1 on every read, on every chemistry machine, permanently, with a line of justification sitting beside it in the code.

RESPONSE: The line reads: "output quality is disclosed by a consumed assay, never omniscient telemetry". Until you spend a sample, the product's own tooltip says "Assay: untested (sample it in the machine console)" and nothing else.

FINAL NOTE: What you get for the sample is the true value plus the instrument's calibration drift plus noise inside a stated band. Drift is a bias of up to 12 points held in one direction until somebody spends 750 FE, and a drifted reading and an honest one are rendered in identical text. The uncertainty is printed. The bias is not.

ProcessMachineBlockEntity data slot 17, ChemTooltips.onTooltip, ChemistryEquipmentState.assay

In the body

Purity is not a score. It is the active fraction of what you inject. A 100 mL dose at 40 percent grade delivers 40 mL of actual drug effect, and the dose calculation multiplies volume by purity before anything else touches it.

Separately, the impurity itself hurts. A dirty dose adds sickness at 0.4 per mL scaled by how impure it is, applied once per injection rather than once per component of a mix. It can also fester the injection site: the infection seed is up to 25, scaled by the impurity fraction and by how much of a full 100 mL syringe you actually pushed.

Microbial load is tracked separately from purity and does something different. Every injection creates a real puncture wound, and the process contamination is written onto that exact wound rather than onto a generic limb value. Wound contamination is 2 plus a quarter of the chemical carryover plus three quarters of the microbial load, both scaled by delivered volume. Where microbial load is present the wound also gets an infection seed of up to 35.

For a mixed solution the effective purity is the volume-weighted mean of its components, and each component's own purity scales its own effect.

This is what makes street chemistry emergent rather than flagged. A batch made in a fouled Fermenter, run over a brazier, stalled twice and drawn through an unsterilised vessel is a weaker drug that also makes you sick and infects the hole it went in through. No tag anywhere says "impure".

Grade is applied before the drug model ever sees the dose: the injected millilitres are multiplied by purity and by the syringe's carrier fraction first, so everything the pharmacology record describes about the depot, reception and the overdose line is running on that reduced number. Drugs and Pharmacology

The puncture's infection seed is written only while the infection switch is on, so a server running with infection disabled leaves microbial load doing nothing beyond the contamination figure stamped on the wound. Disease and Infection

The table

All 68 shipped operations live in one datapack file, data/doomedmatu/doomed_chemistry/shipped_processes.json - 58 unit operations and 10 Reactor reactions. The breakdown is 16 Evaporator, 11 Recrystallizer, 10 Reactor, 8 Kiln, 7 Fermenter, 6 Drying Oven, 4 Still, 3 Slaking Vat and 3 Filter Press.

Rows are validated on load and rejected individually, so one malformed row loses that row and logs it rather than deleting the table. Bounds are enforced: ticks 1 to 72,000, FE 0 to 1,000,000, fluid amounts 0 to 4,000 mB, item counts 1 to 64, heat 0 to 3, fume 0 to 4, corrosive and pressure 0 to 3. A unit-operation row with more than one output item is refused outright, since those machines have a single output slot and the second product would silently vanish.

When two recipes for the same machine match what is loaded, the most specific wins - the one asking for the most item ingredients. Ties keep file order. This is more than cosmetic: the industrial iodine batch on the Evaporator sat behind an item-free solvent row on the same fluid and could never fire once, so loading kelp and bottles into an evaporator produced reagent solvent instead.

Selection deliberately ignores whether the output has room. A full output slot is a reason to stall, not a reason to run something else.

With the opioidsEnabled server setting off, 20 of the 68 rows disappear from the machines and from JEI and EMI, and the filter then repeatedly drops any surviving row whose ingredient nothing left can produce. The naloxone chain is the live case - its first step is raw opium.

The two accessors the machines read are the same ones feeding the JEI and EMI sync packet, so a recipe book on a server with opioids switched off is showing the shortened table the machine is actually running - the routes record walks what survives. Reagents and Routes

FRAGMENT 13-B - LOAD LOG, REJECTED ROW

SUMMARY: The chemistry table is revalidated on every world load and every datapack reload, row by row, and the survivors are counted out loud: "Loaded 58 unit-operation and 10 reactor chemistry recipes". A row that fails validation is dropped by itself and named in the log with its index and its file.

RESPONSE: A representative refusal, thrown while parsing: "output_items has 2 entries but a RECRYSTALLIZER has one output slot - only the first would ever be produced". The machine has one output slot and the tick loop only ever writes the first product, so the second would have vanished on every batch forever without anybody being told.

FINAL NOTE: The per-row catch used to sit outside the loop, at file scope. One typo anywhere in shipped_processes.json therefore threw away all 68 recipes at once and left eight machines and a Reactor with nothing at all to make - a mod that boots clean and appears to have no chemistry in it.

ChemistryProcessManager.apply and ChemistryProcessManager.parseProcess

CHEM-02

Reagents and Routes

Chemistry in Doomed is a chain of small, dumb machines. Each one performs a single physical operation - dry, roast, slake, ferment, distil, press, recrystallize, boil down - and the Reactor sits at the end of the ladder holding the reactions that actually make an injectable drug. Every batch carries a hidden 0-100 quality number that is rolled from how the machine was run, and that number decides how much of the dose is real drug and how much is dirt that sickens you and festers the injection site. Nothing in the interface shows you that number until you spend part of the batch sampling it.

Two tables

All chemistry recipes live in a single server datapack file rather than the normal recipe folder, and they split into two tables. Rows whose machine is anything other than REACTOR are unit operations, run by the eight process machines. Rows whose machine is REACTOR belong to the Reactor alone. Sixty-eight rows ship.

A process machine has two input item slots, one output item slot, an input fluid tank, an output fluid tank and an RF buffer. The Drying Oven, Kiln and Recrystallizer show no fluid bars at all - their recipes run solid to solid, and the reagent they consume is an item. The Reactor has three reagent slots and both tanks. Both tanks hold 4,000 mB.

A machine picks its recipe from what was loaded, ranked by how many ingredients the row asks for. The most specific row wins, and ties keep file order. Output space is deliberately left out of that decision: a full output slot stalls the machine rather than pushing it toward a different product. It used to push. That is how kelp and bottles loaded into an Evaporator came out as solvent instead of iodine.

One ingredient never occupies both input slots. Two slots mean two ingredient roles, so a Recrystallizer fed a double stack of one reagent out of a chest keeps every two-ingredient row it owns.

Heat

A machine reads the best heat source among its six face-adjacent blocks. A lit Brazier, fire, lava, magma or a lit campfire is tier 1. One running RF Heater is tier 2. Two adjacent running Heaters make tier 3. Three or more make tier 4, which is over-fired and above every recipe's safe ceiling.

Each machine type carries a required minimum and a safe ceiling. The Kiln needs tier 2, so a brazier will never light one - the single most common reason a Kiln sits idle reading NEEDS HEAT. The Still, Evaporator and Drying Oven need tier 1. The rest need none.

The ceiling is where it gets expensive. Quality is rolled against how far into the band the machine actually sat, averaged over the whole batch. The bare minimum costs 12 points of grade and a quarter of the fluid yield. The ceiling costs nothing. So the Evaporator and the Kiln want exactly two Heaters, while the Drying Oven, Still and Recrystallizer want exactly one, their ceiling being tier 2 and a second Heater pushing them over it.

The Fermenter is the trap. Its safe ceiling is tier 0, so any heat at all beside a Fermenter sits above band, costing grade and mash. Put the braziers somewhere else.

The Recrystallizer is the other trap, running the opposite way. It runs with no heat, and heat still drives its quality roll: at tier 0 the roll starts 12 points down. A Recrystallizer with no Heater beside it quietly makes worse crystal than one with a Heater beside it.

The Filter Press and Slaking Vat ignore heat entirely for quality purposes.

Every row carries a total FE cost and a tick count, and the machine spends the FE evenly across those ticks. The heaviest single row is the Kiln turning catalyst ore into clinker at 4,000 FE over 300 ticks, which works out to 13.3 FE per tick. The Fermenter rows are the cheapest at about 1 FE per tick.

The mod ships exactly one generator. The Fuel Generator burns ordinary furnace fuel at a flat 20 FE per tick, which covers any single chemistry machine with room to spare and falls short of two heavy ones. A Heater draws 12 FE per tick while lit, so a Kiln plus its two Heaters is already 37 FE per tick.

A batch remembers its own history. Time spent below the band, time spent above it, and every stop-start transition subtract from the finished grade, and the arithmetic only ever runs the one way. Each interruption costs 2 grade points up to a cap of 14, and 3 percent of fluid yield down to a floor of 65 percent. A fire or a rupture during the batch counts as four interruptions at once.

A batch that has yet to tick once is committed to nothing. Reservation happens at the completion tick, so a machine parked on OUTPUT BLOCKED loses nothing, and topping up its input tank with cleaner material while it waits actually improves the finished product. A stalled full output is specifically excluded from the thermal sampling for that reason - a backed-up automation line will not rot the charge it is holding.

The five reagents

Everything downstream runs on five generic reagents. All five are earned.

Base reagent is slaked lime. Craft calcite into limestone, kiln the limestone into quicklime, then slake the quicklime with 500 mB of water in the Slaking Vat for two base reagent. Boiling 500 mB of waste filtrate down in the Evaporator gives one, which is how the press waste from the morphine and antibiotic lines gets recycled.

Solvent comes off the alcohol chain. Ferment sugar, wheat, apples, sweet berries or cyst gall berries with water into mash, distil 1,000 mB of mash into 300 mB of ethanol in the Still, then boil 300 mB of ethanol down in the Evaporator for two solvent. Sugar is the best feedstock: two sugar and 1,000 mB of water gives a full 1,000 mB of mash in 400 ticks, where three wheat gives 800 mB in 600 ticks.

Acid reagent has a mineral route and a bio route, and the mineral route is worth twice as much. Two gunpowder crafts into two sulfur lumps; kiln a lump into roasted sulfur, kiln that into sulfur trioxide, slake the trioxide with 500 mB of water into 300 mB of acid liquor, then boil the liquor down for two acid reagent. The bio route ferments 300 mB of ethanol into 300 mB of vinegar in an unsealed Fermenter and boils that down for one acid reagent.

Acetylating reagent is a bench craft: one acid reagent plus one solvent. It uses the grade-carrying shapeless recipe type, so it inherits the lowest grade of the two ingredients rather than resetting to perfect.

Catalyst is the gate on the two hardest syntheses. Three amethyst shards craft into raw catalyst ore, the Kiln fires it into catalyst clinker at 4,000 FE, and the Recrystallizer dissolves the clinker in solvent into reaction catalyst. Fentanyl and naloxone will not run without it.

Salt starts in the sea. One dried kelp boiled with 1,000 mB of water in the Evaporator gives two crude salt. Two crude salt recrystallized with solvent gives two refined salt. Kilning refined salt gives electrolyte salts.

Saline is refined salt boiled with 900 mB of water into 1,000 mB of saline. The choice of water decides the grade outright: distilled water stamps the batch at 95, ordinary water stamps it at 70. Distilling costs 1,000 mB of water and 700 FE for 900 mB of distilled water in the Still, and it is worth doing for anything headed into a vein.

Ringer's solution takes two dry components. Kiln bone meal into mineral supplement, craft sodium lactate from two sugar plus a base reagent, then recrystallize the supplement with the lactate into Ringer's salts. Evaporate electrolyte salts plus Ringer's salts with 900 mB of water into 1,000 mB of Ringer's solution - again 95 on distilled water, 70 on plain.

One unrelated route lives on the same machine. Two dried kelp blocks, four glass bottles and 300 mB of ethanol in the Evaporator produce four iodine, against the bench recipe's one iodine per kelp block and bottle. Iodine is the long-window topical disinfectant.

Saline and Ringer's carry their stamped grade as an active fraction, so a 100 mL syringe off the plain-water row adds 0.07 L of blood volume where the distilled-water row adds 0.095 L, and the distillation step pays for itself in the vein rather than on the recipe card. Blood and Circulation

Antibiotics

Ceftriaxone has the longest legitimate chain in the mod, with two entry points. Above ground, an antibiotic culture crafts from rotten flesh, a brown mushroom and sugar. In the cyst biome, spore caps come off spore blooms, and three of them dried in the Drying Oven make one culture - that is the reason a trip down there is worth the lungs it costs, and it is the only antibiotic source free of a mob farm.

From the culture: ferment it with 500 mB of distilled water into 500 mB of ferment broth, press the broth into ceftriaxone mash plus 400 mB of waste filtrate, run the mash with solvent through the Still into crude cephalosporin, recrystallize that with solvent into pure cephalosporin, and finish it in the Reactor with an acetylating reagent. That last step stamps 96, the highest nominal grade of anything in the mod.

There is a one-step shortcut. Antibiotic culture plus solvent straight into the Reactor gives ceftriaxone at 75 for 5,000 FE and 600 ticks. It skips five machines and costs 21 points of grade.

The antibiotic pill is a separate, cruder thing: culture plus sugar plus paper on a bench. The antiviral costs two cultures plus glow berries plus paper, deliberately dearer, because antibiotics do nothing to Rot Lung.

Injected ceftriaxone sets the antibiotic timer and disinfects the limb it entered for 180 seconds, and nothing on this line reaches a virus: Rot Lung wants the antiviral, whose recipe costs two cultures for that reason. Disease and Infection

Opioids

It starts with the opium poppy, an eight-stage crop that grows on farmland, dirt, grass, podzol, moss or a dirt path. Harvest the mature pod for poppy latex, dry the latex in the Drying Oven for raw opium.

The bench route is long. Evaporate raw opium with 500 mB of water into 500 mB of opium solution at grade 60. Slake that with a base reagent into 500 mB of morphine slurry at 70. Press the slurry into crude morphine plus 400 mB of waste filtrate. Recrystallize the crude with an acid reagent into morphine base, dry it, recrystallize the dry base with solvent into morphine solid, then evaporate the solid with 200 mB of water into 200 mB of morphine at grade 92.

The dirty shortcut skips the last two steps: evaporate morphine base dry straight into morphine at grade 68. Twenty-four points of grade for two machine steps.

There is also a weak tap-off. Boil 500 mB of opium solution down to 100 mB of opium at grade 55, a fifth of the volume and the worst grade on the board.

Heroin repeats the pattern. Morphine solid plus acetylating reagent recrystallizes into crude heroin, which dries into heroin dry. Evaporate the dry directly for heroin at 48, or recrystallize the dry with solvent into pure heroin first and evaporate that for heroin at 90.

The Reactor carries a parallel, shorter ladder at worse grades: raw opium into 100 mB of opium at 80, then opium plus base and solvent into morphine at 65, then morphine plus acetylating reagent into heroin at 55. It is faster and it is dirtier. Dirt is not cosmetic.

An injected opioid loads a depot that absorbs over time rather than landing all at once, so fentanyl's respiratory low point arrives well after the needle and can outlast a naloxone dose given in answer to it. Pain, Consciousness and Death

The deep syntheses

These are the deep syntheses, and all of them finish in the Reactor.

Fentanyl's precursor is built out of pure reagents rather than the plant. Kiln a base reagent and an acid reagent together into crude fentanyl intermediate, recrystallize it with solvent into the pure intermediate, dry that into the pure precursor, then react the precursor with a reaction catalyst. That final step is the most expensive operation in the mod at 7,000 FE over 640 ticks, and it stamps 92.

Naloxone runs off raw opium instead. Recrystallize raw opium with an acid reagent into the crude intermediate, recrystallize that with solvent, dry it into the pure precursor, and react it with catalyst for grade 94.

Both have a dirty shortcut built on an unrefined precursor item that can only be found - fentanyl precursor and naloxone precursor turn up in drop capsule loot at the rarest weight. Reacted with catalyst they give grade 70 instead of 92 or 94.

Procoagulant is the odd one out, the one Reactor row that stands clear of the chemistry chain entirely. Two clotting mush, one mineral supplement and one solvent give 100 mB of procoagulant at grade 72 for 3,500 FE. Clotting mush is cobweb and wheat on a bench, and mineral supplement is kilned bone meal. Procoagulant is the only treatment that reaches internal bleeding anywhere in the body, so this row matters more than its position on the ladder suggests.

Procoagulant reduces internal bleeding through the wound ledger in every limb at once and thickens the blood as it goes, so a second and third dose trade a bleed you can see for a viscosity problem you cannot. Blood and Circulation

Grade

Every solid intermediate carries a hidden 0-100 grade on its NBT, and every chemistry fluid carries a purity the same way. An item with no tag reads as 100 and counts as unmeasured.

The finished number is rolled at the completion tick from the recipe's nominal grade, minus the heat penalty, minus time spent out of band, minus interruptions, plus a jitter of up to 3 points either way. Then it is capped twice.

The first cap is the input. A batch stays close to the dirtiest tracked ingredient that went in. The recovery allowed is 20 percent of the shortfall, capped again by the machine: the Recrystallizer may recover up to 20 points, the Slaking Vat up to 12, the Filter Press up to 8, and every other machine including the Reactor recovers nothing. Grade therefore only ever creeps upward, and it creeps only through recrystallization. Feed a Reactor a grade-60 precursor and no amount of careful heat lifts the drug to 92.

The second cap is glassware, covered below.

When you inject, purity is the active fraction rather than a separate punishment. A 100 mL shot at 40 percent delivers the effect of 40 mL of drug plus 60 mL of dirt. The dirt then adds sickness scaled by volume and impurity, and seeds infection at the injection site up to 25 points at zero purity. A bad batch is weak and harmful at once.

Fluid yield varies too, and only for fluids. Item outputs produce their full stated count however badly the batch ran.

The Evaporator and the Reactor stamp their batches through an installed borosilicate flask. Right-click either machine holding a flask to fit one; the flask goes in instead of the interface opening.

With no flask, or a fully worn one, the purity ceiling is 60. A fresh flask lifts it to 100 on a straight line, so condition 50 means a ceiling of 80. Each batch wears the flask by 4 points, about 25 batches per flask. The ceiling caps the roll and never raises it.

This is the quietest gate in the whole tree, because the Evaporator makes the reagents. Solvent, acid reagent, salt and iodine all come off the Evaporator, and all of them are stamped with a grade. Run a flask-less Evaporator and every reagent it produces is grade 60, the input cap carries that 60 down the entire chain, and the only thing that lifts it is a Recrystallizer creeping it up eight or ten points at a time. A player who never learned about the flask will make grade-60 drugs forever with nothing on screen to explain why.

A flask is nine glass and one quartz on a bench, so the fix is cheap once you know.

Grade is dose: DrugService multiplies the injected millilitres by purity before it applies any effect at all, so a grade-48 street batch delivers roughly half the opioid load of a grade-90 one out of the same 100 mL syringe. Drugs and Pharmacology

FRAGMENT 02-A - GLASSWARE, ASSIGNED MACHINE

SUMMARY: The Borosilicate Flask carries one description in en_us.json: "Lab glassware for the Reactor.\nFit it to raise the purity ceiling toward pharma grade.\nIt clouds over with use - re-fit a fresh one when it does."

RESPONSE: Two machines take a flask. ProcessMachineBlockEntity.usesGlassware() returns true for the Evaporator, and ReactorBlockEntity keeps a glassCondition field of its own. The Evaporator is the machine that stamps solvent, acid reagent, salt, saline, Ringer's and every finished opioid fluid, so its flask governs far more of the tree than the Reactor's does. The Evaporator's own tooltip mentions the flask. The flask's tooltip never mentions the Evaporator.

FINAL NOTE: A player who reads the item and fits their one flask to the Reactor has gated nothing, because the Reactor recovers no grade in the first place and the 60-point cap has already been stamped onto every reagent upstream. The 0.2.x notes record a pass that added tooltips for every machine, block and step of the chain. Whether this string predates the Evaporator's ceiling or was simply missed in that pass is not recorded.

assets/doomedmatu/lang/en_us.json, tooltip.doomedmatu.borosilicate_flask and tooltip.doomedmatu.evaporator; ProcessMachineBlockEntity.usesGlassware(); the glassCondition field in ReactorBlockEntity.

FRAGMENT 07-C - UNWASHED CARBON, HANDLING NOTE

SUMMARY: The Kiln turns two charcoal and a base reagent into two Unwashed Activated Carbon. The item's tooltip: "Chemically activated carbon contaminated with corrosive residue.\nWash it with distilled water in a Filter Press before swallowing it."

RESPONSE: The washed product, Activated Charcoal, is registered as a MedDrinkItem and can be swallowed. The unwashed item is registered through the plain chem() helper as an ordinary Item with no use action. Nothing consumes it except the Filter Press row. The warning describes a mistake the game will not let a player make.

FINAL NOTE: Read as a safety label it is redundant. Read as a record it says somebody expected the unwashed carbon to be swallowable and to hurt, then either changed their mind or stopped before that half was built. The carbon line is also the only chemistry route in the mod that ends in something you drink rather than inject.

assets/doomedmatu/lang/en_us.json, tooltip.doomedmatu.activated_carbon_unwashed; DoomedItems.chem() against the MedDrinkItem registration for activatedcharcoal; the KILN charcoal row and the FILTER_PRESS wash row in shipped_processes.json.

Fouling

Every machine keeps four numbers that survive between batches: residue, microbial load, sterility and calibration. Finishing a batch fouls all of them. Residue climbs by 9 plus a third of the recipe's fume potency. Any wet step drops sterility to 55, and any biological step - the Fermenter - adds 16 microbial at once. Calibration falls by 1 and drifts randomly.

The payoff is real. Chemical carryover into the product is the larger of the input's contamination and 35 percent of the machine's residue, so a Kiln left uncleaned for six batches stamps 35 chemical contamination onto everything it makes. Microbial carryover is 45 percent of the machine's microbial load, and an injectable product carries a floor on top of that: below sterility 90, the product takes at least half the shortfall. A Reactor that has run one batch sits at sterility 55, so every drug it makes from the second batch onward comes out with at least 17 microbial load.

That number travels. Injecting seeds a puncture wound whose contamination is 2 plus a quarter of the chemical load and three quarters of the microbial load, and any microbial load at all seeds real infection at the site. Seventeen is enough to mark the limb infected on its own.

The cleaning cycle has an order, and it enforces the order. Rinse consumes one water bucket, wipes residue to zero, removes 30 microbial, and drops sterility to 45 - rinsing is explicitly not sterilizing. Sterilize consumes one bleach container, zeroes microbial and restores sterility to 100, and it refuses outright while residue is above 5. Dirt gets to stay visible rather than sealed under a clean surface. Calibrate costs 750 FE and only affects what the readout tells you.

Bleach is a found or bought item, craftable nowhere in the mod, and sterilizing consumes the whole container regardless of how full it is.

Every invasive dose writes one puncture wound at the site it went into, and that wound's contamination is built from the machine's own carryover - 2 plus a quarter of the chemical load plus three quarters of the microbial load, scaled by volume - so a dirty vessel becomes a specific wound record rather than a general penalty. Injury and Treatment

The assay

Nothing shows a batch's grade until it is assayed. An unassayed item or syringe reads "Assay: untested" on its tooltip and stops there. The Assay button on the machine console consumes 10 mB of the output fluid, or one whole item from the output slot when there is no fluid, and writes an estimate onto whatever is left.

The estimate is not the truth. It is the true value plus the machine's calibration drift, plus a random error of up to the reported uncertainty. Uncertainty on purity starts at 14 and falls by 0.55 per point of Intelligence, with a floor of 2 and a ceiling of 22, and it widens by one point for every 10 points of lost calibration. Contamination reads worse: it starts at 20, falls by 0.65 per Intelligence, and floors at 3.

A character starts at Intelligence 10, which gives about plus or minus 8 on purity and plus or minus 13 on contamination from a freshly calibrated machine. Around Intelligence 22 the purity reading hits its floor of plus or minus 2.

Calibration drift is the nastier half, being a systematic bias rather than noise. It wanders by up to 0.35 per batch and clamps at 12 in either direction, so a machine that has run a long time can quietly report every batch up to 12 points high. Calibrating resets the drift to near zero.

The reading is discarded whenever the material changes. A new batch landing in the tank, or a lot blending in down a pipe, clears the stale assay rather than carrying it forward.

Chemistry itself trains Intelligence. Every machine synthesis awards 12 XP to the nearest player within 8 blocks, and hand-crafting anything in the chemistry tag awards 8, but each repeat of the same product pays 82 percent of the last, flooring at 8 percent of base. One cheap row will carry a character only so far.

FRAGMENT 09-B - THE ONLY NOTICE

SUMMARY: A graded item or syringe with no assay tag prints exactly one line: "Assay: untested (sample it in the machine console)".

RESPONSE: Sampling consumes 10 mB of the output fluid, or one whole item out of the output slot when no fluid is present. What comes back is the true value plus the machine's calibration drift plus a random error up to the reported uncertainty, and the drift is a bias rather than noise: it wanders up to 0.35 a batch and clamps at 12 either way. Reading the number costs part of the batch and returns an estimate.

FINAL NOTE: That line is the whole of what the game volunteers about grade. A player running a flask-less Evaporator gets no line at all - their reagents simply come out at 60 forever, and the tooltip that would tell them is the one they have to spend material to see.

ChemTooltips.java, the untested line and the assay percentage line beneath it; ChemistryEquipment.assay consuming a 10 mB sample; ChemistryEquipmentState.assay and its calibrationDrift term.

Fumes and fire

A running machine emits fumes with a potency of its own. The Kiln and Still are worst at 3, the Slaking Vat and Evaporator sit at 2, the Drying Oven and Recrystallizer at 1, and the Fermenter and Filter Press emit nothing. Individual recipes can override this, and several do.

Exposure is scanned every half second in a 3-block cube around you, distance-weighted and blocked by solid geometry, summing every running machine and capping at 5. Open sky halves it. A powered Fume Hood in line of sight cuts it to 12 percent, which is what makes an indoor lab survivable. Without respiratory protection the cloud adds sickness continuously; at 1.5 it slows you and darkens your vision without safety glasses or a gas mask; at 2 it adds nausea and starts doing recoverable chemical injury to your chest muscle.

Fire is rolled every half second while a batch is moving. A flammable step - the Still, the Evaporator and every Reactor row - carries a base ignition chance that works out to about 6 percent across a 30-second run. An open flame adjacent raises that to roughly 26 percent, and overheating to roughly 42 percent. A brazier, campfire, lava and magma all count as open flame; the RF Heater counts as none. Fire is placed on top of the machine, so it spreads to a wooden base.

The fentanyl and naloxone reactor rows are sealed at pressure 2, which makes them violent. Run one over an open flame or above the heat ceiling and it can detonate rather than merely catch, and a sealed pressure-2 vessel carries a small rupture chance even when run perfectly. The blast wounds and flings, and leaves blocks intact.

The two over-dried pure precursors are shock-sensitive. Carrying pure fentanyl precursor or pure naloxone precursor means a hard wounding fall has a 50 percent chance per stack of setting the whole cache off in your inventory, and every burn tick while you are on fire has a 35 percent chance. The blast radius scales with the stack size up to 4.5 blocks. The tooltip warns you in red; that warning is the only notice you get.

Moving fluids

Chemistry fluids other than water have no bucket item. They move by adjacent Fluid Barrel, by pipes from another mod, or in a refillable syringe. The barrel holds 16,000 mB, blends lots of the same fluid by volume-weighted average, and is the only fluid storage in the mod.

Every machine has per-face I/O. By default the bottom face is Output and the other five are Input, with auto-push and auto-pull both on. That is convenient, and it is also how accidents happen: an Input face beside a barrel will pull whatever the barrel holds into the machine's input tank as long as some recipe for that machine consumes it.

The input tank has no exit. An Input face is fill-only, an Output face addresses the output tank, and draining by hand was never built. So a stray charge of the wrong accepted fluid pins the machine to that fluid's recipe subset until it runs out, and if less remains than any recipe consumes, it stays there permanently. This is a known open defect rather than a misunderstanding on the player's part.

The status line names most other stalls plainly. NEEDS HEAT means the tier is below the minimum. OUTPUT BLOCKED means the product will not fit, a stall rather than a loss. BATCH MISMATCH means an adjacent output destination has room for the same fluid and is refusing it over quality data.

For injection, the Syringe Filler pumps 20 mB per tick at 10 FE per mB, and a syringe holds 100 mB. The Centrifuge does the opposite job: pour a mixed solution in and it separates one component every 2 seconds at 2,000 FE a spin, each component keeping the purity it had in the mix.

The one-way input tank belongs to the shared SideConfig rather than to chemistry - Input faces fill only, Output faces address the output tank, and every Doomed machine ships with the same bottom-Output default and auto-pull switched on. Machines, Power and Fluids

APPR-01

Machines, Power and Fluids

Doomed runs a full Forge Energy and Forge Fluid layer under its chemistry and medical blocks. One block burns fuel and makes power; everything else only consumes it. Every machine that moves items or fluids carries a six-face routing config that decides which pipes may talk to it and which way round, and it pushes and pulls through those faces on its own even with no pipes present. Most of the frustration players hit here comes from four places: there are no cables in this mod, an input tank cannot be emptied once you put the wrong thing in it, a face set to None really does disconnect an attached hopper, and a machine stalled on a full output is still holding a live batch that can rot.

Supply

The Fuel Generator is the entire supply side of the mod. It burns ordinary furnace fuel through Forge's burn-time hook, produces a flat 20 FE per tick while an item is alight, and holds a 16,000 FE buffer. Coal burns for 1,600 ticks, so one lump is 32,000 FE, more than the buffer can hold at once.

Ignition waits on headroom. A fresh item lights only when there is room in the buffer for at least one more tick of output, so a generator sitting on a full buffer stops eating fuel rather than wasting it.

Every other energy block in the mod is a pure sink. MachineEnergyStorage's two-argument constructor sets maxExtract to zero on purpose, so a Process Machine, a Reactor or a Freezer keeps whatever it has taken in and hands none of it back. The generator is the one exception: it uses the three-argument form and states an extract limit of 256 FE per tick, which is what lets a foreign cable from another mod draw off it.

Since nothing in Doomed pulls, the generator pushes. Each server tick it walks its six neighbours and offers up to 256 FE to any block entity exposing the energy capability that reports it can receive. That is the whole distribution system. Distribution ends at contact: the mod registers no cable, conduit or wireless block, so a generator has to physically touch the machine it powers, or the pipes have to come from another mod. A ring of machines around one generator is the intended survival layout.

One trap sits in the fuel slot. A syringe of Kyntiane fuel is never burned. Putting one in arms it, and when its fuse expires the generator deletes the syringe and detonates it in place.

FRAGMENT 07-C - EQUIPMENT CARD, RF HEATER

SUMMARY: Seven block tooltips in the shipped English lang file instruct the owner to supply the unit from a cable. The Battery Recharger, the Oxygen Compressor, the Freezer, the Heater, the Cooler, the Fume Hood and the Lifepod Console all carry some form of the same line.

RESPONSE: "An RF heater. Feed it from a cable; while powered it glows and warms nearby players. A full buffer runs ~4.5 min. The charge rides the block when you mine it, so carry it charged."

FINAL NOTE: No cable, conduit or wireless power block is registered anywhere in the mod. The only supply Doomed ships is a Fuel Generator physically touching the block, or pipes borrowed from another mod entirely. The second sentence is wrong by a different route: PoweredClimateBlockEntity charges its 12 FE once every ten ticks, so a full 64,000 FE buffer runs closer to 44 minutes than 4.5. Both halves of the card have been read by every player who has ever placed a heater.

assets/doomedmatu/lang/en_us.json lines 821-837 (tooltip.doomedmatu.heater and six siblings); block/entity/PoweredClimateBlockEntity.java:26-46

Buffers and cost

Buffers are sized by how hungry the machine is, and the receive rate is how fast a generator or a foreign cable can refill one. Energy is exposed on every face of every machine regardless of the side config, so a power connection never needs configuring.

The Reactor is the greediest, with a 64,000 FE buffer and a 2,048 FE per tick intake. The Process Machines, the Centrifuge and the Syringe Filler all sit at 32,000 FE and 1,024 FE per tick. The support stations (Battery Recharger, Oxygen Compressor, Freezer, RF Heater and Cooler) hold 64,000 FE at 1,024 FE per tick.

Running costs are per recipe rather than a flat draw. A Process Machine or Reactor batch carries a total FE figure and a tick count, and spends a fraction of that total on each tick of actual progress. Some low-power recipes legitimately cost zero on a given tick, and the machine still has to be energized to advance: the stop check demands at least 1 FE even when the exact due amount rounds to nothing.

The fixed-rate machines are simpler. The Centrifuge spends 2,000 FE for each component it spins out, once every 40 ticks. The Syringe Filler pumps 20 mB per tick at 10 FE per mB, so a full 100 mB syringe costs 1,000 FE and takes five ticks. The Oxygen Compressor adds 6 ticks of breathing supply per tick at 8 FE each, filling a 900-tick rebreather in about 7.5 seconds for roughly 7,200 FE. The Battery Recharger pushes up to 256 FE per tick into each of its two slots.

Calibrating a chemistry machine costs a flat 750 FE out of its buffer.

The per-tick draw is not a machine property at all: a batch spends a fraction of the recipe's own declared FE across its declared tick count, so the recipe table is what sets the load, and across all 68 shipped rows the heaviest averages 13.34 FE per tick on a Kiln. The Chemistry Engine

The six faces

Four machine families carry a side config: the eight Process Machines, the Reactor, the Centrifuge and the Syringe Filler. Each of their six faces holds one of four modes.

None exposes nothing at all. Input exposes an insert-only view of the input slots and the input tank, so a pipe can push material in while your reagents stay put. Output exposes an extract-only view of the output slot and output tank. Both hands out a combined view where inserting goes to the inputs and extracting comes from the outputs.

A freshly placed machine defaults to Input on all five faces and Output on the bottom. That is why a chest or hopper placed under a machine starts collecting product immediately with no setup at all, and it is also why a hopper under a machine you did not want drained is pulling from it.

Faces change from the machine screen's Configuration tab, marked Cfg. Left-click a face to cycle forward through None, Input, Output, Both, and right-click to cycle backward. Two buttons on the same tab toggle auto-input and auto-output globally for that machine, and both default to on.

The server refuses a side-cycle packet unless you actually have that machine's menu open, are within eight blocks, and your hands are functional. Wreck your hands and the machine stops answering.

Configured faces are drawn on the block itself as inset port plaques, blue for input and orange for output. A Both face gets two smaller plaques side by side rather than a third symbol. A None face draws nothing, so a machine with a bare side is a machine nothing can connect to.

The config, both auto toggles, the tanks, the slots, the buffered energy and any fitted flask all copy onto the block item when you mine the machine, so a machine you pick up and replace comes back configured and loaded.

Auto push and pull

Every configured face does work on its own once per server tick, with no pipes involved at all. An Output face looks at the block entity on the other side and shoves finished items and fluid into it. An Input face looks at the same neighbour and pulls raw material out of it. A Both face does both, each direction gated by its own global toggle.

The rates are fixed and per face. Eight items per tick and 100 mB per tick move across each active face. Six configured faces means six times that.

This is the reason a barrel of ethanol set beside a Still keeps it fed, and the reason a chest under any machine fills with product. It is also why a machine with a Both face pointed at another machine can drain it: auto-pull reads the neighbour's fluid capability the same way a pipe would.

Input slots are filtered before anything crosses. A Process Machine accepts only an item that some recipe for that specific machine actually uses, so auto-pull keeps junk out of the inputs even from a mixed chest. A second rule is less obvious: the same ingredient can never occupy both input slots. Two input slots means two ingredient roles, and without that rule a chest holding more than a stack of one reagent would fill both slots with it and permanently starve every two-ingredient recipe. That defect killed the Recrystallizer outright, since all of its rows take two ingredients. The machine sat charged and idle, reporting no fault at all.

The duplicate check compares items by identity and deliberately ignores NBT, because every solid chemistry intermediate carries per-batch grade and contamination tags. Two stacks of the same reagent from different batches are still the same ingredient.

Setting a face to None does two separate things, and both had to be built because either alone leaks.

First, the capability. When a face changes mode, the machine retires every handler it has already handed out and issues fresh ones. Without that, a pipe that cached the handler kept the old mode until the machine unloaded, so a face set to None went on accepting pushes from whatever was already attached. Energy is deliberately exempt from the retirement, because cables connect on every face regardless of config and dropping their handles on an unrelated item-face change would be pointless churn.

Second, the vanilla path. Hoppers do not only ask for the capability. When Forge's hook returns nothing, a hopper falls back to plain vanilla container access, and that path honours face rules only if the block entity implements WorldlyContainer. The Process Machine, the Reactor and the Syringe Filler were plain Containers, so vanilla waved hoppers straight through and let them walk the slots in index order. Slot 0 is an input slot. A hopper under a face you had deliberately set to None did not stop, it started stealing your reagents, which made None strictly worse than leaving the face as Output.

All three now implement the face gates, so a None face returns no slots to vanilla and a hopper on it does nothing.

One related detail on the Syringe Filler: its Output face releases a syringe only when the syringe is full, or when the tank can no longer top it up. Earlier it released anything with fluid in it, and because auto-push runs before the fill loop each tick, a chest under the default bottom face collected a stream of one-fifth doses.

FRAGMENT 12-A - FUEL CERTIFICATION, LIQUID RAW ORIGINIUM

SUMMARY: A syringe of Kyntiane compound is registered as furnace fuel with a genuine burn time - kyntianeAmountMb multiplied by 20 ticks per millilitre, so a full 100 mB syringe certifies at 2,000 ticks. The item carries two tooltip lines about that rating.

RESPONSE: "Nominal fuel: %s seconds from %s mL." "UNSTABLE FUEL: inserting it arms a 3-second fuse. It will explode before burning."

FINAL NOTE: The word doing the work is "nominal". The furnace mixin's own docstring reads "Makes Kyntiane Compound an advertised fuel that can never survive long enough to be consumed" - a vanilla furnace holding one cancels its tick entirely, arms the fuse and detonates in place without smelting anything. The Fuel Generator does the same and skips it when picking fuel. Its face gate then keeps the armed syringe where it is, because the syringe reports a real burn time and only spent items are allowed out, so a hopper cannot pull it clear during the three seconds. A Brazier goes further and arms the syringe while it is still in your hand, then hands it back.

item/FluidSyringeItem.java:39-144 (getBurnTime, armKyntianeFuel, detonateKyntianeFuel); mixin/AbstractFurnaceBlockEntityMixin.java:15-35; block/entity/FuelGeneratorBlockEntity.java:78-99, 292-303; block/BrazierBlock.java:73-77; lang lines 104-105

The input tank

This is a live defect the code documents against itself, and it is worth knowing about because there is currently no clean way out of it.

An Input face is fill-only. An Output face addresses the output tank rather than the input tank. A Both face hands out a combined view whose drain also goes to the OUTPUT tank. Add those up and no configuration of any face empties a machine's input tank.

Forge's tank refuses an unlike fluid whatever the free space, so a single millibucket of the wrong liquid pins that machine to whatever recipe subset uses that fluid until the charge is run out through a batch.

There is a partial guard. Both the Process Machine and the Reactor filter their input tank against their own recipe table, so a fluid no recipe for that machine consumes is rejected rather than hoarded. The Reactor goes further and accepts only a drug fluid that some reaction actually takes as input. What the filter cannot stop is a fluid that IS valid for that machine but is not the one you wanted.

The obvious fix was tried and reverted, because it was worse. Letting a Both face drain the input tank when the output tank was empty would have quietly emptied the ingredients into whatever was attached, since a process machine's output tank is empty for almost the whole of a run. Worse, auto-pull reads a neighbour's fluid capability, so one machine with a Both face aimed at another would have siphoned that machine's charge into itself.

The practical answer for now is to keep an item-only machine for item work and to be deliberate about what you pipe into a tank. The Drying Oven, the Kiln and the Recrystallizer show no fluid bars at all and therefore never auto-pull fluid, so they cannot be jammed this way.

Right-clicking a machine with a fluid container transfers fluid instead of opening the screen. This works on the eight Process Machines, the Reactor, the Centrifuge, the Syringe Filler and the Fluid Barrel.

The transfer routes through the same per-face config the pipes use, which is what makes it predictable rather than a special case. Click an Input face with a full bucket and the input tank fills. Click an Input face with an empty bucket and nothing happens, because an Input face is fill-only. Click the Output face (the bottom, by default) with an empty bucket and you draw the product off. A None face stays shut to a hand exactly as it stays shut to a pipe.

Vanilla water buckets work, because a bucket is the first thing anyone reaches for. The mod's own chemistry fluids are container-only and have no bucket item registered, so they move by syringe, by an adjacent tank, or by pipe.

Until this existed, the only route into a machine tank was the fluid capability, which in a Doomed-only install meant an adjacent Fluid Barrel and nothing else, and the Fluid Barrel had no crafting recipe. The whole fluid layer was unreachable in survival without another mod's pipes.

A Fluid Barrel holds 16,000 mB of anything and exposes it on every side with no configuration. Its contents survive being mined, because the loot table copies the tank onto the dropped item. The exception is a barrel authored by world generation: those are tagged non-recoverable, the barrel item is stripped from the drops entirely, and the fluid goes with it. Empty a found barrel before you break it.

Blending

Chemistry fluids carry their assay in NBT. A purity value from 0 to 100, a chemical carryover figure and a microbial load all ride along on the FluidStack through tanks, pipes and syringes. An absent tag reads as fully pure, so old or untouched fluid behaves normally.

Forge treats differing NBT as a different fluid, which would deadlock a pipe chain because one batch came out at 71 percent and the next at 72. Doomed's tanks work around that: they accept the compatible portion and stamp the volume-weighted mean of both lots. Purity, chemical carryover and microbial load are all blended by volume. Anything else in the tag counts as genuine incompatibility, and differently composed mixed solutions are refused outright because their component lists need real mixing rather than one headline average.

Blending is why topping up a tank batch after batch matters. Every merge is a weighted average, so a dirty lot poured into a clean tank drags the whole tank down and cannot be separated back out.

When an output face cannot move fluid, the machine tries to work out why. If the destination has room, accepts this base fluid, already holds the same base fluid, differs only in blendable assay properties, and still refuses the transfer, the machine reports status 6 and the screen reads BATCH MISMATCH. That is a specific diagnosis rather than a generic jam, and it tells you the neighbour is holding a graded lot that will not merge with what you are producing.

One output face succeeding is enough to clear it. The mismatch flag raises only when nothing moved anywhere that tick, so a second stale attachment does not get called a machine-wide failure while another destination is accepting.

Heat

Power alone does not run a chemistry machine. Almost every recipe also names a minimum heat tier, and the machine reads the best heat source among its six face-adjacent blocks every server tick.

Tier 0 is cold and nothing reacts. Tier 1 is a lit Brazier or vanilla open heat: fire, soul fire, lava, magma, or a lit campfire. Tier 2 is one running RF Heater. Tier 3 is forge grade and needs two running heaters adjacent. Tier 4 is over-fired, which takes three or more, and it is hotter than any recipe's safe ceiling.

Braziers count as open flame and RF Heaters do not, and that distinction is a safety decision rather than a cosmetic one. A flammable step run over an open flame carries several times the ignition risk of the same step on a controlled heater.

Heat is also the only thing these machines report to redstone. A comparator on a Process Machine or a Reactor reads the heat tier, not the progress or the buffer. The mapping is 0 for cold, then 4, 8, 12 for the safe ceiling, and 15 for over-fired. Twelve is the back-off threshold and fifteen alone means the vessel has gone over, so the drop from 15 to 12 is a visible recovery edge an automation can act on. The block updates its comparator the moment the tier changes rather than on a timer.

A machine's screen shows the tier it currently has, the minimum the active recipe needs, and the ceiling that recipe considers safe.

A lit Heater or Cooler is doing two jobs at once - LocalClimateService and TemperatureHandler both scan for a nearby PoweredClimateBlock as a radiant source, so the pair of heaters holding a Reactor at forge grade is also pushing the body temperature of whoever stands beside them, and a Fume Hood is deliberately excluded from that scan because it is a different block class. Needs and Survival

The batch lock

A machine picks a recipe from what you loaded, never from whether the output has room. It ranks candidates by specificity, meaning the number of item requirements, so a recipe that asks for ingredients always beats one that asks for none. That ranking exists because a recipe with no item requirements silently shadowed every item-bearing recipe sharing its machine and input fluid. Loading kelp and bottles into an Evaporator produced reagent solvent and the iodine batch could never fire once.

Once selected, the batch locks. It stays re-selectable while progress is at zero, because nothing is reserved until the completion tick, and it locks for real the moment it starts moving. The lock survives a save, a reorder of the recipe table, and being mined and replaced.

Five things stop a running batch, and the screen names each one. NEEDS HEAT means the tier fell below the recipe minimum. NO POWER means the buffer cannot pay this tick. OUTPUT BLOCKED means the product will not fit. BATCH INPUT LOST means an ingredient or the input fluid went away. RECIPE UNAVAILABLE means the locked recipe no longer exists, which cancels the batch losslessly rather than bricking the machine.

The quiet part is that a paused batch keeps accruing damage. The machine samples heat while stopped and counts time spent below or above the recipe's band against the finished grade, on the reasoning that a cold stalled still or a hot unpowered vessel really is spending time at the wrong temperature. One exception is deliberate: an OUTPUT BLOCKED stall does not sample, because a backed-up buffer is the normal state of an automated line and sampling through it would have rotted the charge it was protecting. A Fermenter is the worst case there, since its heat ceiling is zero and any lit brazier nearby counts as above band.

Emptying the input slots of a stalled batch is the cancel gesture. There is no cancel button; clearing the ingredients on purpose resets the batch.

The machines

Eight of them share one block entity, configured by the block it sits in, and all run off one recipe table filtered by machine type.

The Drying Oven dries a wet solid. The Kiln roasts at high heat. The Slaking Vat takes an item plus a fluid and makes an item. The Fermenter takes an organic solid plus water and makes a fluid over time. The Still distils a fluid into a fluid. The Filter Press separates a slurry into a solid and a filtrate. The Recrystallizer takes a crude solid plus a solvent and makes a purer solid. The Evaporator boils a fluid down to a solid. Each has two input slots, one output slot, a 4,000 mB input tank and a 4,000 mB output tank, except that the Drying Oven, the Kiln and the Recrystallizer show no fluid bars at all.

The Reactor is its own class. Three reagent slots, a filtered input tank, an output tank, and no item output at all, since its product is always a drug fluid. Multi-step syntheses chain through it.

The Centrifuge takes a mixed solution apart. Its input tank accepts solutions only. Every 40 ticks, if it has 2,000 FE and its output tank is completely empty, it spins one component out at the purity that component held inside the solution and rebuilds the input without it. That empty-output condition is a real constraint: the Centrifuge sits idle until the last component is taken or piped away.

The Syringe Filler holds two syringes under a nozzle and fills them from its tank. Only empty or partly filled syringes go in, and only full ones come out of an Output face.

Around them sit the support blocks. The Battery Recharger takes any energy-capable item, including devices from other mods. The Oxygen Compressor refills a rebreather. The Ventilation unit is passive with no power at all and simply clears stale underground air for anyone within 8 blocks, which is what stops enclosed space adding extra grime.

The Ventilation unit does its work through the hygiene clock rather than through any machine: each loaded unit registers its position in a dimension-aware set and DirtinessHandler tests proximity against that set, so the 8 block sphere suppresses the extra grime enclosed air adds and touches nothing else. Needs and Survival

Glassware and fouling

The Reactor and the Evaporator hold a borosilicate flask. Right-click either with a flask in hand to fit one, and it will refuse if the fitted glass is already at full condition rather than wasting it.

The flask sets a purity CEILING, never a bonus. Fresh glass at 100 condition allows up to 100 percent purity. Empty or fully worn glass caps you at 60, which is street grade, and the machine still runs. Each completed batch wears 4 condition off, so a flask is worth about 25 batches.

Separately, every chemistry machine carries persistent vessel state that has nothing to do with the current batch. Completing work adds 9 residue plus a share of the recipe's fume potency, drops sterility to at most 55 for a wet process, adds microbial load, and shaves a point off the measuring instrument's calibration while letting its drift wander.

That state leaks into your product. Chemical carryover on the output is floored at 35 percent of the vessel's residue, and microbial load at 45 percent of the vessel's own, with an extra floor for invasive products made in a vessel below 90 sterility. A dirty machine makes dirty drugs however clean the inputs are.

Four buttons on the Chemistry tab handle it, and each needs a specific thing in your inventory. Rinse consumes a water bucket, zeroes residue and removes 30 microbial load, but it explicitly caps sterility at 45 because washing is not sterilizing. Sterilize consumes a bleach and sets microbial to zero and sterility to 100, but it REFUSES outright while residue is above 5. You cannot seal dirt under a clean surface. Calibrate costs 750 FE from the machine's own buffer and resets the instrument. Assay consumes 10 mB of product or one output item and reads back purity and contamination with an uncertainty band.

That band is the point. The assay never reveals a true number. It reports a value shifted by the instrument's drift and jittered inside a window that narrows with your Intelligence and widens as calibration decays. A machine you never calibrate lies to you about its own product.

All four actions refuse while a batch is genuinely moving, but not while one is merely selected at zero progress, so a machine backed up on a full output can still be serviced.

The vessel's microbial floor rides out on the product and lands in a limb: DrugService reads the microbial figure off the injected syringe, scales it by dose volume at 0.35 and caps it at 35, and a seed of 3 or more flips the limb to infected and files an INFECTED case note, so a fouled machine is a source of infection several steps removed from the needle. Disease and Infection

FRAGMENT 09-B - FIELD JOURNAL, ENTRY 'CLEAR'

SUMMARY: Four pages, filed under BODY, unlocked in order and only by getting the maintenance sequence wrong at a real machine. Page 0 arrives when a rinse leaves microbial load behind on a vessel still under 90 sterility. Page 1 arrives when the Sterilize button refuses because residue is above 5.

RESPONSE: "The heat did nothing useful. There was still material baked against the inside... I nearly used the vessel anyway. It had been heated. I had done the serious-looking part. That should have counted for something. It doesn't. Dirt first. Then heat. Sterilizing something filthy only makes hot filth."

FINAL NOTE: The last page is not awarded for cleaning anything. It waits for a contaminated injection to produce a real limb infection - a microbial seed of 3 or more out of the syringe, twenty seconds elapsed, the limb genuinely flagged infected - and it also demands that page 2 has already been read. So the entry cannot close until the vessel you neglected has put something into somebody. The refusal that unlocks page 1 sends the player no message at all; the button simply does nothing.

data/doomedmatu/doomed_journal_entries/clear.json; network/C2SChemistryActionPacket.java:68-101; journal/FieldJournalObservationTracker.java:90-96, 168-183; body/DrugService.java:505-523

Hazards

A running machine rolls for hazards every ten ticks, which is twice a second. The rolls are per half-second of exposure, not per batch.

A flammable step carries a base 0.1 percent per roll, which works out to roughly 6 percent across a 30 second run. An open flame adjacent adds 0.4 percent per roll, taking the same run to around 26 percent. Overheating adds 0.8 percent, taking it to around 42 percent. A non-flammable machine pushed above its ceiling still rolls 0.15 percent for a heat incident.

The Still and the Evaporator are the flammable process machines. The Reactor is always flammable and its high-energy syntheses are also violent, which means an open flame or an overheat can produce a real blast rather than a fire.

A fire is placed on top of the machine so it persists and can spread to a wooden floor. A blast has a 4 block radius, applies wounds and knockback through the body sim, and deliberately does NOT break blocks, so it will hurt you badly without cratering your base.

There is a separate roll for the datapack's material risks. A sealed over-pressured process and an incompatible vessel each contribute, and at risk level 2 or above the result is a blast rather than a fire.

The practical rule is that an RF Heater is much safer than a brazier for any flammable step, and that three heaters around a machine is not a bonus, it is an over-fire that both damages the product and multiplies the ignition roll.

The blast goes through the mod's own Explosion.detonate with block breaking switched off, so what reaches you is the body sim's wound and knockback treatment rather than vanilla explosion damage, and the machine is then set alight on top for good measure. Injury and Treatment

The cold chain

Food ages inside containers. Chests are not ticked, so instead of scanning every loaded block the mod stamps each food stack with a game-time mark and charges the elapsed time as rot the next time the stack is seen, either when a container GUI opens on it or when it lands back in a ticked player inventory. The enclosed rate is half the carried rate, still scaled by local biome temperature: cold keeps, heat spoils. Game time runs while a chunk is unloaded, so food in a plain chest genuinely ages while you are away.

A gap of 60 ticks or less counts as actively managed and is skipped, which is what stops the freezer and the icebox double-charging their own contents.

The Icebox is the unpowered answer. One fuel slot takes snow or ice and nine slots hold food. While a charge is melting, food spoils at a flat 10 percent of its carried rate with no biome multiplier, because the ice sets the climate. A snow block lasts 5 minutes, ice 20 minutes, packed ice an hour, and blue ice three hours. The melt only runs while the chunk is loaded, and food is kept across an unloaded stretch if the box went to sleep with a live charge.

The Freezer is the powered top tier. Nine slots, a 64,000 FE buffer, and an upkeep of 2 FE per second charged only while it holds something. A full buffer off-cable is about nine hours of preservation. While powered it re-stamps ordinary food every second, so no time passes for it at all. Out of power it degrades to a plain enclosed container.

Biological perishables ignore that pinning and map cold to their own rate instead. A transplant organ is fully arrested in a powered freezer and runs at 20 percent in an icebox. A blood bag runs at 10 and 20 percent. A cadaver torso and an opened saline bag both run at 15 and 35 percent, so neither ever fully stops.

Two details bite. Both boxes charge the stale warm interval at ambient before their own cold context takes over, so restoring power cannot retroactively refrigerate the minutes a bag already spent in a chest. And both refuse anything that is not food, a blood bag, an organ, a cadaver torso or saline, which means meds have to live somewhere else.

A transplant organ is the one perishable a powered Freezer arrests completely at 0.0, and it bypasses the food re-stamping entirely to get there, so organ viability is governed by TransplantOrganItem's own cold table rather than by anything the Freezer does for food. Organs

A blood bag never fully stops - 0.1 in a powered Freezer and 0.2 in an Icebox - and the settle call that runs when you place a packed cold box back down treats every perishable inside it as AMBIENT, so moving a stocked Freezer costs the bags the whole journey at room rate. Blood and Circulation