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ludic.anim: animation sets - the game's src/animset moved in as it stood (records, AnimPlayer, animset_bind / request / param / tick and the accessors); AnimSets is an open @ByKey registry a game fills with def AnimSets from; a test on a rig of hand-made clips

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Orkun ÇAKILKAYA 2026-09-29 19:01:15 +03:00
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packages/ludic.anim/README.md
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@ -58,6 +58,18 @@ A sampled rotation agrees with `anim_mix` to within 1e-4 a component (ozz keeps
and a channel gives the absolute local L, so D = G_p (L R_rest^-1) G_p^-1.
- The scratch is made once and grown: a call is per actor per frame.
## Animation sets
Which clip plays when, as data: `AnimSets` is an open registry (`@ByKey`, `ASET_*`) a game fills with
`def AnimSets from "assets/data/anim_sets.lres"`. A set is a graph - states (nodes) each with an
ordered list of choices, the first whose `need` bands all hold and whose clip the rig carries playing
(`rate`, or `rate_by` a parameter over the `ground` a cycle covers, held to `rate_min` / `rate_max`),
and transitions (from a state or `"*"`, with a fade; with `@frame when: fn() -> bool`, taken on their
own the frame it answers true). The code binds an `AnimPlayer` to a set and a rig
(`animset_bind`), sets parameters (`animset_param`), asks for a state (`animset_request`, taken once
however often it is asked) and ticks it into a skin (`animset_tick`). A one-shot (`loop: false`)
holds its last pose and hands on to `next`. Clip names are made once per rig; a tick makes nothing.
## Tests
```bash
@ -65,4 +77,6 @@ ludic test packages/ludic.anim
```
A two-bone skin made from a glTF document with no GPU: sampling, wrapping, the cross-fade,
translations off by default, and clips read out of a `.bin` written to the temp directory.
translations off by default, and clips read out of a `.bin` written to the temp directory. And an
animation set on a rig of hand-made clips (`animset_test`, `sets.lres`): need bands, the rate clamp,
a one-shot's `next`, a `when` edge, and a request taken once.