Ports the three retail outbound-movement packers verbatim (decomp-derived
golden bytes, confirmed via the Ghidra bridge, cross-checked vs holtburger):
- D1 — RawMotionState::Pack (0x0051ed10): new AcDream.Core.Physics.RawMotionState
data type (11 fields + actions, retail defaults) + RawMotionStatePacker that
sets a flag bit only when the field DIFFERS from its default. MoveToState.Build
now takes a RawMotionState instead of presence-based nullable params, so the
over-sent forwardSpeed=1.0 / currentHoldKey=None / default per-axis holdkeys are
no longer emitted. num_actions packs into bits 11-15 (not "bits 11-31").
- D3 — MoveToStatePack::Pack (0x005168f0) trailing byte =
(standingLongjump ? 0x02 : 0) | (contact ? 0x01 : 0); explicit contact/
standingLongjump params (standingLongjump=false honestly until the feature lands).
- D4 — JumpAction rewritten to retail JumpPack::Pack (0x00516d10): extent,
velocity, full Position, four u16 timestamps, align. Removed the spurious
objectGuid/spellId u32s; Position is now packed (it was absent). Body 56 bytes.
- Position::Pack (0x005a9640) / Frame::Pack (0x00535130) verified already-correct
(cellId, origin xyz, quaternion wxyz); locked with a golden test, no change.
GameWindow callers adapted minimally: build the RawMotionState from the existing
MovementResult values (behavior preserved except the intended D1 omissions) and
pass cellId/position/rotation to the Jump send. Pre-existing MotionInterpreter
placeholder struct RawMotionState renamed LegacyRawMotionState (D6/Phase-2 scope,
pure rename) to free the name for the retail-faithful type.
D5 audit: confirmed a real divergence — retail SendMovementEvent (0x006b4680)
stamps only last_sent_position_time after an MTS while SendPositionEvent
(0x006b4770) stamps all three; acdream's NotePositionSent stamps all three on
both paths. Left unchanged (comments added at both call sites), recorded as
register TS-33, deferred to a dedicated cadence-port slice.
Tests: RawMotionStatePackTests / MoveToStateGoldenTests / JumpActionTests /
PositionPackTests + updated MoveToStateTests / AutonomousPositionTests. Full
suite green (Core.Net.Tests 372, full solution 3228 passed / 4 pre-existing skips).
Register: TS-24/TS-25 refreshed (packer now supports actions/style; runtime
emission still deferred), TS-33 added. Roadmap L.2b shipped note added.
Spec: docs/superpowers/specs/2026-06-30-movement-wire-parity-design.md (2-6)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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