The timeline offered X and Y as position rows but never Z. The list
of position rows was simply written without it when animations came
in with #97. A swinging weapon could therefore not go behind its
character.
- Z is the third position row, after X and Y, on every placed root
or object. A scene and a behavior still offer no position.
- Play and preview already read and write any position row by name,
so the one entry in POSITION_KEYS is all the code change.
- The draw order is sorted on every render, and play writes z back
into the scene each frame. A keyed Z therefore takes effect at
once. A blended 4.5 sits above 4 and below 5.
Tests:
- ./check.sh: 165 files, 2416 tests, CHECK EXIT 0.
- 3 new unit tests in tests/core/animation.test.ts: Z is offered
after X and Y and not on a behavior or scene, a running game moves
the object from behind to in front of another one, and play,
scene write-back and preview agree on z.
- e2e 25: ALL PASSED, 29 checks. The new check reads X, Y, Z as the
first rows of the row dialog. Check sum 1396 -> 1397.
- Counter-check: without z in the list all 3 new unit tests fail.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
adminandClaude Opus 5.5
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