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fix(physics): movement-parity fixes - adjusted catch-up cap, autorun retail semantics, AP-30 retired

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Ports CMotionInterp::get_adjusted_max_speed (0x00527D00, byte-decoded:
bare rate unless RunForward; forward_speed x 4.0 when running;
current_speed_factor proven a ctor-constant 1.0 at 0x00528C34) and swaps
all five interpolation catch-up call sites to it - retail's
fUseAdjustedSpeed_ static (.data 0x0081F418 = 1) makes this the live
branch, so standing/walking remotes now catch up at ~2x runRate instead
of 4x too fast (the #41/#165 presentation family). Autorun now hard-
forces Run for its duration and cancels on every fresh forward press
(CommandInterpreter::HandleNewForwardMovement 0x006b3d60 is literally
SetAutoRun(0,1)); the old test pin codified the divergence. AP-30
retired: retail Frame::is_equal genuinely uses the 0.0002 epsilon - the
row recorded a non-divergence. Three catch-up test pins re-baselined to
retail semantics with citations. Full Release suite 9,983/0.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Erik 2026-07-30 15:04:17 +02:00
parent 2123b44e8c
commit c0afcacbb2
10 changed files with 174 additions and 32 deletions
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15
src/AcDream.App/Input/DispatcherMovementInputSource.cs
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@ -68,7 +68,13 @@ internal sealed class DispatcherMovementInputSource : IMovementInputSource
StrafeRight: dispatcher.IsActionHeld(InputAction.MovementStrafeRight),
TurnLeft: dispatcher.IsActionHeld(InputAction.MovementTurnLeft),
TurnRight: dispatcher.IsActionHeld(InputAction.MovementTurnRight),
Run: !walking,
// Movement parity audit (2026-07-30): retail's autorun hard-forces
// Run for its whole duration (ACCmdInterp autorun dispatch always
// sends RunForward-class state); the live walk/run toggle only
// applies to ordinary held-key movement. Recomputing `!walking`
// unconditionally let a walk-mode toggle demote an active autorun
// to walking — impossible in retail.
Run: !walking || AutoRunActive,
Jump: dispatcher.IsActionHeld(InputAction.MovementJump));
}
@ -84,7 +90,12 @@ internal sealed class DispatcherMovementInputSource : IMovementInputSource
AcDream.Runtime.RuntimeMovementCommand.ToggleRunLock);
if (AutoRunActive && action is (
InputAction.MovementBackup
// Movement parity audit (2026-07-30): retail's
// ACCmdInterp::HandleNewForwardMovement drops autorun on EVERY
// fresh forward press edge, not only on backward/stop/strafe —
// a new W press while autorunning hands control back to the key.
InputAction.MovementForward
or InputAction.MovementBackup
or InputAction.MovementStop
or InputAction.MovementStrafeLeft
or InputAction.MovementStrafeRight))