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feat(physics): R5-V4 behavioral slice — head stance dispatch (all mt) + #164 autonomy bit + mt-0 wire flags

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Three unpack_movement parity items (facade deferred per the handoff's
own optional clause — see r5-wiring-handoff §V4 status):

1. HEAD style-on-change (0x00524440 @00524502-0052452c): both GameWindow
   routing heads (remote + player) now dispatch DoMotion(style, ctor
   defaults) when the UM's stance differs from the interp's current
   style, BEFORE the movement-type routing — for EVERY type. Previously
   style applied only through the mt-0 funnel copy, so a chase/turn UM
   (mt 6-9) carrying a stance change started the move in the OLD stance
   (a monster charged in NonCombat posture until the next mt-0). The
   RetailObserverTraceConformanceTests exclusion note updated — the
   trace filter stays (head calls can't appear in a
   MoveToInterpretedState replay) but the production gap it pointed at
   is closed.

2. #164 (closes): the action-replay loop threads each action's autonomy
   into the dispatch params (Autonomous = the 0x1000 splice, raw
   305982) — replayed actions enter the interpreted actions list with
   their real autonomy instead of ctor-default false.

3. mt-0 wire flags consumed (UpdateMotion parsed them since R4-V3):
   0x1 StickToObject → CPhysicsObj::stick_to_object port (0x005127e0:
   resolve target, PartArray radii — 0 when shapeless, guid-as-is for
   acdream's flat entity table — → PositionManager.StickTo; unresolvable
   target → no stick), at BOTH case-0 tails in retail order
   (@00524583-0052458e: funnel apply → stick → longjump flag);
   0x2 StandingLongJump → Motion.StandingLongJump, UNCONDITIONAL write
   (absent flag clears — retail @0052458e). ServerMotionState gains the
   StandingLongJump field.

Conformance: ChaseArm_WithStanceChange_AppliesStanceBeforeTheChase
(harness mirrors the routing-head dispatch) +
Actions_ReplayCarriesAutonomyIntoTheInterpretedList. Suite 4041 green.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Erik 2026-07-05 10:18:26 +02:00
parent 530453067a
commit f423884bd1
9 changed files with 213 additions and 20 deletions
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16
src/AcDream.Core.Net/Messages/UpdateMotion.cs
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@ -151,13 +151,11 @@ public static class UpdateMotion
// `_motionFlags`. StickToObject now drives the sticky-guid
// trailer parse below (mt=0 only, per ACE MovementInvalid.Write
// + decomp §2f case 0 @0052455d). StandingLongJump (0x2) is
// DOCUMENTED here but NOT consumed — retail's
// carried on ServerMotionState.StandingLongJump (R5-V4) and
// consumed at the GameWindow mt-0 tails — retail's
// `unpack_movement` case 0 writes it onto
// `motion_interpreter->standing_longjump` (§2f @0052458e), an
// R5 unpack_movement item (this parser has no MotionInterpreter
// reference to write it onto; the bit is simply not read past
// this comment, matching "not consumed" rather than
// mis-consumed).
// `motion_interpreter->standing_longjump` (§2f @0052458e,
// UNCONDITIONAL — an absent flag clears it).
byte motionFlags = body[pos]; pos += 1;
ushort currentStyle = BinaryPrimitives.ReadUInt16LittleEndian(body.Slice(pos));
pos += 2;
@ -323,7 +321,11 @@ public static class UpdateMotion
moveToRunRate,
moveToPath,
turnToPath,
stickyObjectGuid),
stickyObjectGuid,
// R5-V4: MotionFlags 0x2 — consumed at the GameWindow mt-0
// tails (retail unpack_movement @0052458e writes it onto
// minterp->standing_longjump unconditionally).
(motionFlags & 0x2) != 0),
instanceSequence, movementSequence, serverControlSequence, isAutonomous);
}
catch