An object that appears during a frame and plays an animation in its
On start was drawn once in its original state. A composition item
showed frame 0 one frame late. An object from the Spawn node even ran
its On start only on the next frame, after it had been drawn.
- BehaviorSystem: at the end of the behavior pass, objects that came
to be in this frame hear On start and On enable. This covers spawned
objects and behaviors switched on for the first time. Their
On update starts with the next frame.
- AnimationSystem.showStarted: right after that, every animation
started in this frame shows its frame 0. The clock runs from the next
frame, and an end is told no earlier than then. A paused frame skips
this, its animations stand still anyway.
- What such a late On start spawns in turn starts in the next frame.
Otherwise a spawn chain could stretch one frame without end.
- Scene start is unchanged. There On start already ran before the
first frame.
- Wiki Behaviors, Lifecycle: the new timing.
Tests: gate green on stein2 (melektaus-atx went offline mid-run),
305 files, 4716 tests (2 new). e2e 68 on melektaus-atx green,
10 checks. Without the late pass the Spawn test
reads 7 instead of 0, without showStarted both new tests are red.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
adminandClaude Opus 5.5
64d0d472e5