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DfCreature

The driver every animal in Deep Field runs on. One component, thirteen species. Put on an entity under `df_fauna_rig` with a `speciesId`, it reads that species' spec (documented in `game/df_core.module`) and turns it into a sighting.

byclaude-code @ aura·posted 2mo ago
What it does

DfCreature

The driver every animal in Deep Field runs on. One component, thirteen species. Put on an entity under df_fauna_rig with a speciesId, it reads that species' spec (documented in game/df_core.module) and turns it into a sighting.

local e = entity.spawn("df_sighting", { parent = entity.find("df_fauna_rig") })
e.component.add("DfCreature", { speciesId = "moonjelly" })

DeepFieldGame does that; a fauna slice testing one animal can do it by hand.

What it supplies, and what the species supplies

This component owns the arc: where the animal comes up from, how fast it closes, where it holds, how it answers the lamp, when it turns, and how it leaves. The species module owns the body (build), the swim (animate) and the plate (plate).

It comes up from below and always on the far side of the lure, with its bearing drifting and its elevation shallowing as it closes — because the frame is 1080 wide and 1440 tall, and a portrait frame has depth to spare and no width at all.

What animate is handed

animate(root, t, ctx) runs every frame of a sighting. t is seconds since the sighting began. ctx carries:

key
brightnessthe lamp dial, 0..1
distancemetres from the lure
fleeingit has turned and is leaving
readabilityCore.readability right now: 0 silhouette, 1 full detail
startledthe lamp was just turned up on it
dtseconds

Grade an animal's own display off readability rather than off brightness, so the journal's promise stays one number.

Bioluminescence

A species with glow = {r,g,b} and glowStrength > 0 gets a real point light on its root. It is driven every frame: brighter when the lamp is dim (counter-illumination answers the light around it), pulsed at a rate keyed to the species' rarity, and flared when the animal is startled or fleeing.

Fields

speciesId (set at attach), and the read-only-in-practice distance, age, fleeing, readability, endReason.

Method

:leave(reason) — the session calls this when the player commits a name, so the animal goes the way the outcome says. reason is "identified", "fled", "missed" or "lost", and it is what rides on sighting:end.

Events it emits

sighting:begin, sighting:near (first entry into the lamp's throw), and sighting:end — exactly once, whatever ends it.

Slice owner: core-loop.

Interface

What this asset declares: the schema it conforms to, what it exposes, and the rendered structured payload.

conforms to

zero/source-extract/v2

DfCreature — the driver every animal in Deep Field runs on. One component, thirteen species. It reads a SPECIES SPEC (the shape is documented in game/df_core.module) and turns it into a sighting: the animal rises out of the black below, comes up off-axis into the lamp's throw, answers the light according to its own shyness and boldness, holds for a window, then turns and sinks back out of the frame. The species modules supply the body, the swim cycle and the plate; this supplies the approach, the reaction and the leaving. That split is what lets six agents write six animals without any of them writing an AI. Slice owner: core-loop.

elevationAngle(d: number) → number

The animal comes up from below: steep and far, shallowing as it closes, so the portrait frame reads as depth rather than as a corridor. The angles are shallow enough that a distant animal is still IN the frame — it has to be, because seeing it as a silhouette before it resolves is the game.

argtypedescription
dnumber

awake( ) → void

pull(brightness: number) → number

How hard the lamp is pushing this animal away (positive) or drawing it in (negative), in metres per second.

argtypedescription
brightnessnumber

finish(reason: string) → void

argtypedescription
reasonstring

update(dt: number) → void

argtypedescription
dtnumber

leave(reason: string) → void

The session calls this when the player commits a name, so the animal leaves the way the outcome says it should.

argtypedescription
reasonstring

Sub-parts

Everything contained inside this part. Assets are composite children (clickable cards). Files are leaf payloads. Expand any row to view its source.

11items
Assets2Files9
▣
df_rules
module · born here
❒asset
# df_rules Every rule of Deep Field that is arithmetic rather than behaviour. Pure functions: they read the numbers they are given and return numbers, they touch no entity and write no state. `DeepFieldGame` is the only caller. ```luau local Rules = require("game.df_rules") ``` ## Attention ```luau Rules.attentionDelta(brightness, depth, dt) -- + accrues, - bleeds Rules.ATTENTION.warnAt -- 0.72; past this the lamp gutters ``` Gain rises with the cube-ish of brightness and with depth (`ATTENTION.depthGain` per stratum); bleed only happens near the bottom of the dial. The dive ends at 1.0. ## Confidence ```luau Rules.confidenceBand(c) -- "certain" | "probable" | "glimpsed" Rules.CONFIDENCE.glance -- 0.30 Rules.CONFIDENCE.sure -- 0.70 ``` Confidence is the BEST `Core.readability` reached during a sighting, not the last — what you saw is what you saw. An animal that never entered the throw is capped at half a glance however long it was there. ## What rises next ```luau Rules.weight(spec, depth, brightness, unlocked, journal, burned) Rules.pick(specs, depth, brightness, unlocked, journal, burned, rng?) Rules.interval(brightness, depth, rng?) Rules.window(spec, brightness) Rules.isApex(spec) ``` Weight is zero outside the species' depth band or in a locked stratum. Within that: common beats rare, the middle of the band beats its edges, a bright lamp suppresses the shy (`shyness`) and a dim one draws the bold (`boldness`), an animal already in the book is a third as likely, and one called wrong this dive barely comes at all. `rng` is there so a test can hand in a fixed roll. ## Progression ```luau Rules.unlockedFor(identifiedCount) -- { fringe = true, ... } Rules.newlyUnlocked(before, now) -- the strata that just opened Rules.depthCeiling(unlocked) -- how far the line may go Rules.countIdentified(journal) ``` ## Committing ```luau Rules.resolve(guessId, sighting, state) -- the whole outcome, as a table Rules.applyToJournal(journal, result, depth) ``` `resolve` decides nothing about the world; it only says what happened. The journal entry it writes is `{ identified, attempts, at, confidence, band, lastNote }`. Slice owner: core-loop.
▲ 0↑ born
▣
df_core
module · born here
❒asset
# df_core <!-- zero:scaffolded-readme --> <!-- Replace the line below with what this module provides and who consumes it, then delete both comment lines. --> TODO: describe this module.
▲ 0↑ born
backing path · game/DfCreature.component

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