Port the inbound funnel verbatim into MotionInterpreter:
- MoveToInterpretedState (0x005289c0): raw-state style adopt, FLAT
copy_movement_from overwrite, apply, then action replay under the
15-bit server_action_stamp wraparound gate (local player skips its
own autonomous echoes).
- ApplyInterpretedMovement (0x00528600): my_run_rate cache from
RunForward speed, then retail dispatch order style -> forward-or-
Falling -> sidestep(-stop) -> turn(-stop), turn early-return.
- DispatchInterpretedMotion (0x00528360): contact-gated sink dispatch
(IInterpretedMotionSink = the GetObjectSequence backend the App
implements); blocked non-action motions take the apply-only path —
retail's real mechanism behind K-fix17's 'airborne remotes keep
their cycle' empirical guard.
- contact_allows_move REWRITTEN VERBATIM from the real 0x00528240
(pseudo-C 305471): Falling/0x40000011 + turns always allowed,
non-creature weenies + no-gravity bypass, else Contact+OnWalkable.
The previous body conflated jump_charge_is_allowed (0x00527a50)
posture checks — the 2026-06-04 deep-dive divergence, now retired.
Six tests that pinned the misattributed behavior corrected
(grounded posture does NOT block motion; airborne accepts
Falling/turns only).
- IWeenieObject.IsCreature (default true) for the gate's non-creature
bypass.
Conformance harness (the user-requested 'prove it equals retail'
apparatus, layer 1): RetailObserverTraceConformanceTests parses the
LIVE cdb trace of a retail observer (Fixtures/l2g-observer-trace.log,
captured via tools/cdb/l2g-observer.cdb) into 183 golden cases —
each [MTIS] input state replayed through our funnel must produce
retail's exact [DIM] dispatch sequence. 183/183 conformant, including
the airborne jump case (replayed contact-free; pre-gate vs post-gate
accounting + HitGround second-pass truncation documented in-test).
13 synthetic funnel tests cover the branches the trace missed
(actions, stamps, longjump, sidestep).
GameWindow integration (S2b) follows; funnel not yet wired.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
