Visual verification of L.3.1-as-originally-scoped (commit ae79e34
through e08accf) revealed that InterpolationManager corrections alone
cannot produce smooth motion — retail also relies on animation root
motion (the L.3.2 PositionManager work, originally deferred). The two
halves are functionally inseparable.
Spec changes:
- L.3.1 sub-lane absorbs L.3.2's PositionManager
- New section: PositionManager architecture (pure-function ComputeOffset
returning Vector3 delta; combines body-local seqVel * dt rotated to
world + InterpolationManager.AdjustOffset correction)
- New section: IsGrounded plumbing through EntityPositionUpdate (the
PositionFlags.IsGrounded=0x04 is already parsed; just expose it)
- New section: retail-faithful jump pipeline (airborne → no-op per
MoveOrTeleport's has_contact=0 semantics; landing detected via first
IsGrounded=true UP after airborne)
- Acceptance criteria updated for combined scope
- Implementation order: 6 commits remaining (after the revert at 1641d6e)
- Stall-blip TAIL annotation (Task 0 resolution) folded in
L.3.3 (MoveToManager) stays a separate sub-lane.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
c4446e76fb