The ergonomic layer over the engine-owned SpriteAnim/Motion systems (#43): - Named clips: Anim.clip("run", frames, fps, mode) registers a clip by name and Anim.play(entity, "run") plays it; Anim.play(entity, fps, frames, mode) sets the clip directly. A name-keyed registry in systems.ludic. - Frame events: Anim.on_frame(entity, frame) arms optional SpriteAnim event_frame/event_fired fields; the engine flags the tick the clip first lands on that frame, and Anim.fired(entity) reads it — the game reacts, so it stays inside the no-runtime-dispatch event model. - Motion.to(entity, from, to, dur, ease) starts a value tween over the Motion component in one call (reflection-ABI writes, resetting the timer). - Fluent Tween handles (runtime/native/tween.ludic): Tween.to / Tween.chain / Tween.delay build a sequenced, disposable handle advanced by a new engine-owned system (esys_tween, run each Update tick); Tween.value / Tween.done / Tween.parallel / Tween.stop read and control it. The 1-arg Tween.done(handle) is disambiguated from the 2-arg pure Tween.done(timer, dur). Splicing: g_uses_anim_rt pulls in systems.ludic; g_uses_tween_rt pulls in tween.ludic and inserts esys_tween into the Update phase. All integer and deterministic, so animation and motion reproduce exactly under replay/lockstep. Worked example + regression: examples/library/anim_sugar.ludic (4 8 2 1 0 100 100 0 0 1 20 20 30 0 1). Twelve new docs pages (Anim, the new Motion namespace, Tween handles). Full suite 77 passed, self-host C-free fixpoint intact, no golden drift. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
1.4 KiB
1.4 KiB
| id | name | category | kind | tokens | sig | tip | order | ns | member |
|---|---|---|---|---|---|---|---|---|---|
| anim-clip | Anim.clip | anim | namespace-method | Anim.clip | Anim.clip(name, frames, fps, mode) | Register a named spritesheet clip so Anim.play can play it by name. | 31 | Anim | clip |
Registers (or updates) a spritesheet clip under a name, so gameplay refers to a motion by name — Anim.play(entity, "run") — instead of repeating its frame count and rate everywhere. The clip stores frames (cell count), fps (rate) and mode (0 loop, 1 once, 2 ping-pong). Names compare by identity (a string literal interns to one pointer), and the registry holds up to 32 clips. Registering the same name again overwrites it.
Parameters:
name— the clip name (a string)frames— number of cells in the clipfps— playback rate in frames per secondmode— 0 loop, 1 once (clamp on last), 2 ping-pong
program Demo {
property SpriteAnim { ticks: int = 0, fps: int = 0, frames: int = 0, mode: int = 0, frame: int = 0 }
model Hero { SpriteAnim }
entry {
Anim.clip("idle", 2, 4, 0) # a slow 2-frame idle loop
Anim.clip("run", 6, 12, 0) # a 6-frame run
Anim.clip("hit", 3, 15, 1) # a one-shot hit reaction
spawn Hero { SpriteAnim { } }
Anim.play(World.query_next(World.prop_id("SpriteAnim"), 0), "run")
quit()
}
}