# Concealment and Intake

*How a hidden item exists without existing, how it gets onto a prisoner in the first place, and how
it becomes real again.*

This is the spine of the whole mod. Everything else — shivs, tunnels, searches, corruption — is a
different way to add to, or remove from, the private stash this page describes.

## While it is concealed, there is no item

The single most important rule:

> The prison quietly tracks what each pawn is hiding. **Concealed contraband is not an item on the
> map. It is a secret.** It is not in the gear tab, there is no icon, and the player is told nothing —
> because an item you can see in the UI is not contraband, it is inventory, and there would be nothing
> for a warden to discover and no reason to ever order a search.

A concealed item is only a hidden fact about a pawn: what it is, how far along it is, what material it
ended up made of, an optional source it is being whittled from, its tunnel state if it is a pick, and
whatever it holds inside. It has **no physical object** anywhere in the world until one of two things
happens:

| Moment | What happens |
|---|---|
| The prisoner **uses** it | It materialises into their inventory as a real item |
| A warden **finds** it | It is deleted; it never becomes an item at all |

A corollary the search page leans on hard: **an empty search must still cost time.** If the search
job only ever appeared when there was genuinely something to find, the mere *offer* of the job would
be the discovery. You have to be able to toss a clean cell and come up with nothing.

## Where a thing can hide

Every piece of contraband can hide in one of two places, and this decides **who can ever find it**:

| Site | Holds | Found by |
|---|---|---|
| **On the body** | small: a shiv, pills, a phone | searching the **pawn** |
| **In the cell** | bulky: a rifle, a carboy, a crude pick | tossing the **room** |

A warden turning over a prisoner and their cell reaches both. The reason the two are split at all: a
**constable** in Justice's policing layer, frisking a colonist named in a street crime, only reaches
what is on the body, so whatever is under their floorboards stays there until somebody has grounds to
search the *room*. The split between "who may search" and "what a search reaches" is deliberate — see
[Warden Search](Warden-Search.md).

## Three kinds of contraband, and no list of items

There is no hardcoded list of contraband item names. At the start of a game, the mod looks at every
item in the game and decides, once, whether it counts as contraband, in one of three ways:

1. **Explicit.** Anything a mod has deliberately marked as contraband. This is the opt-in, and it is
   how a mod plugs in its own behaviour for how the item is acquired, used, or used to escape.
2. **Every drug** — recognised automatically.
3. **Every weapon** that isn't destroyed when dropped — recognised from its **mass**.

For anything not marked explicitly, the mod fills in how well it hides and where, so a modder never
has to:

| Kind | Test | Concealability | Hides |
|---|---|---|---|
| Hard drug | drug rated Hard | **0.75** | on body or in cell |
| Other drug | any other drug | **0.5** | on body or in cell |
| Light weapon | mass ≤ 2.0 kg | **0.7** | on body or in cell |
| Heavy weapon | 2.0 kg < mass ≤ 10.0 kg | **0.35** | in cell only |
| Very heavy weapon | mass > 10.0 kg | — | **not contraband** (a minigun hides nowhere) |

**Concealability** runs 0 to 1, where **0 = a warden finds it every time and 1 = never**; higher is
harder to find. Drugs and inferred weapons get **no crafting route** (you cannot synthesise yayo in a
bare cell, and you cannot conjure a rifle) and **no special use behaviour** — because vanilla already
knows what to do with them. A prisoner takes a drug on their own; an armed prisoner *is* the payload.
Getting the item into the cell is the entire problem, and that is all these routes solve.

Nothing here edits another mod's items. It is a one-time reading of each item's own stats. Modded
drugs and weapons are covered without ever being named.

## The heartbeat

The prison does its ongoing work on a heartbeat. Every **250 ticks** it visits every pawn who could
be concealing something and does all the ongoing work: intake, tunnel progress, and improvisation. If
nothing on the map can be self-made and no escape tools are in play, it does nothing and costs
nothing.

Because the heartbeat already visits every held pawn, intake needs no special trigger on the capture
event: a pawn who is in custody but has not yet been processed is, by definition, one who was newly
taken.

### Who counts as a concealer

The set of pawns being tracked is **not** just prisoners. It is every pawn whose belongings are
anyone's business — prisoners, slaves, ward patients, **and free colonists**:

> A free colonist forbidden their drug by a drug policy or an ideoligion is precisely the pawn who
> keeps a private stash — and vanilla already denies them, with no valve.

Whether anyone may *search* a given concealer is a separate question with a separate answer (the
warden's authority reaches prisoners; a future cop's reaches colonists). Tracking is pawn-agnostic;
authority is not.

## Intake: the moment of capture

Vanilla never strips a captive *on capture* — a downed pawn keeps whatever they walked in with, and
the warden just hauls them to a cell. Intake is Contraband's answer to that gap, and it runs on the
first heartbeat that sees a newly-held pawn:

1. **Held only.** The pawn must be a person and in custody — prisoner, slave, or ward patient. A free
   colonist is tracked, but nobody frisks and processes *them* on the way into a cell, so their
   carried gear is never intaken.
2. **Once.** Each captive is processed a single time; a later pass finds them already done and moves
   on. (It remembers by an ID, so it holds no ghost of a captive who has since died.)
3. **Even while downed.** Intake runs *before* the "must be awake" gate. The stash a captive walked in
   with is hidden the moment they are in custody, not when they wake — everything *after* intake
   (whittling, digging) needs them awake, but hiding what is already on you does not.
4. **Only what can ride on a body.** A thing can be intaken only if it is small enough to hide on the
   body. A shiv up a sleeve is intaken; a rifle or a suit of armour is too bulky to palm and stays as
   ordinary strippable gear the player confiscates for free.
5. **Per-item disposition.** For each concealable thing the captive carries, the mod rolls whether
   *this* pawn would hide *this* item — a base chance of **0.6**, then scaled by the pawn's nature ×
   nurture (Core's propensity). The roll is **fixed per (pawn, item)** — a settled fact, not a fresh
   coin each tick. The frightened cook surrenders the knife; the disposed lifer palms it, and always
   would have.

When a pawn does hide an item, the real object is **removed from the game** and a hidden secret takes
its place, preserving what the item was made of and — critically — anything it holds inside.

## Preserving contents without understanding them

A concealed vessel is not just "a jar" — it is a jar *of* something (hooch, piss, a fermented blend),
and that something has to survive being hidden and come back when the item is used. Contraband stores
what a vessel contains as a single opaque label and **has no idea what it means**.

When the item is concealed, that label is captured; when the item comes back out, the label is used
to pour the contents back into the freshly-made thing. This is the exact seam **Foul Play** uses to
keep a smuggled carboy's contents intact. Without a bridge mod, no content is captured and nothing is
lost — a shiv is just a shiv.

Fermentation itself lives in Foul Play, not here. A concealed vessel comes back out **fresh** and
ferments afterward like any other, which suits the theme: fresh-brewed piss is weak, and time is what
makes it a weapon. (The prison remembers how long the vessel was hidden, for any bridge mod that
wants to restore its aging, but it never acts on that number itself.) See
[Compatibility](Compatibility.md).

## Redemption: the secret becomes real

When a hidden item is finally used, it turns real:

1. It is made from the material it was whittled from (or the item's default material, if it was never
   made from a material).
2. Anything it held inside is poured back in.
3. It is placed into the pawn's inventory. If that somehow fails, nothing is dropped and nothing is
   lost.
4. The secret is cleared from the stash.

The trigger for this is a breakout. When a prisoner enters an escape or assault-the-colony state, they
will arm themselves and then use whatever they are hiding — the same moment a base-game prisoner would
reach for a combat drug. The one contraband hook Ludeon wrote and then left reading an always-empty
inventory is exactly where this slots in. For each thing a pawn is hiding:

- **Inert contraband** (a drug, a stashed rifle — nothing special to "use"): just materialise it and
  get out of the way. Vanilla takes the drug on its own; a weapon in inventory is a weapon. But a
  stashed **weapon** only comes out for someone who would actually use it — the same person who would
  not stop to pick a rifle off the floor does not become a fighter because the knife was in their
  sock, and a pawn incapable of violence never does at all. If they qualify, the weapon moves into
  their hands; otherwise it stays hidden and they run. See [Improvised Weapons](Improvised-Weapons.md).
- **Active contraband** (something with a special use — e.g. Foul Play's throw-the-carboy):
  materialise it, then hand off to that item's own use behaviour.

## Confiscation, and the door every route comes through

When a warden finds contraband, it is simply removed. It **never becomes a real item** — the warden
found it, and there is nothing to drop on the floor. (This is why searching is not a way for the
colony to *acquire* a prisoner's drugs; it is a way to *deny* them.)

At the other end, there is one single door that **every** supply route comes through — intake uses it,
a bent warden uses it ([Corruption](Corruption.md)), and a smuggling gangmate
([Institution: Gangs](Compatibility.md)) uses it. It hands a prisoner something already finished and
hidden, optionally with contents. One door, many keys.

## Saving

Concealed contraband is saved with your game — the whole stash, the per-pawn search cooldowns, and who
has already been intaken. On load, any secret whose pawn or item no longer exists is quietly dropped:
prisoners who died or left take their secrets with them.

## Quick reference

| Constant | Value | Meaning |
|---|---|---|
| Heartbeat | every 250 ticks | poll cadence for intake / tunnels / improvisation |
| Intake base chance | 0.60 | per-item, before nature × nurture |
| Intake gate | held + body-hideable | only pawns in custody, only items small enough to palm |
| Hard-drug concealability | 0.75 | inferred from being a hard drug |
| Other-drug concealability | 0.50 | inferred |
| Light-weapon concealability | 0.70 | mass ≤ 2.0 kg, hides on body |
| Heavy-weapon concealability | 0.35 | 2.0–10.0 kg, in cell only |
| Unhideable mass | > 10.0 kg | not contraband |

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*Part of the **Institution** suite — Core · Contraband · Justice · Gangs, alongside Foul Play and
Ward. Each stands alone; together they interlock.*