Closes the door-cyl phantom slide where a sphere approaching a closed
cottage door at NE/SE headings could be blocked by the cyl's radial
normal contaminating the slide tangent into the slab face (live
evidence in door-a6p6-v2.utf8.log: 12 resolves with
cn=(0.86,0.51,0) attributed to door entity 0x000F4245).
Retail anchor: CPhysicsObj::FindObjCollisions at
acclient_2013_pseudo_c.txt:276861 dispatches BINARILY between
BSP-only and cyl+sphere based on HAS_PHYSICS_BSP_PS (0x10000 in
acclient.h:2833). For non-PvP, non-missile movers — every M1.5
scope walking-vs-static scenario — an entity with the flag set
tests its BSP exclusively; the foot cyl is never tested. ACE
confirms the truth table at PhysicsObj.cs:412-450 (HasPhysicsBSP,
missileIgnore, exemption).
Our dispatcher iterated every ShadowEntry independently and tested
both the cyl AND the BSP for a closed door. Cyl was registered
first (FromSetup walk order), and its diagonal radial slide normal
"won" attribution at the early-return on first non-OK. Result was
out=in for tangential motion along the door face.
Changes (~15 LOC + 7 unit tests):
- PhysicsStateFlags.HasPhysicsBsp = 0x00010000 (PhysicsBody.cs)
- Transition.BspOnlyDispatch(uint state) static predicate
(TransitionTypes.cs) — mirrors retail's branch with M1.5 scope
defaults (ebp_1 and eax_12 treated as false; wire PvP / missile
refinements when those scopes ship)
- Per-entry guard in FindObjCollisions cyl/sphere branch
(TransitionTypes.cs:2433) — continue when BspOnlyDispatch fires,
with [cyl-skip-bsp] diagnostic line gated on ProbeBuildingEnabled
- A6P7DispatchRulesTests (7 tests, all GREEN): flag value + 6
parameterized predicate cases
Verification: 14-test keep-green list from the 2026-05-25 handoff
passes (5 BSPQueryTests.FindCollisions_Path5_*, 2 CellTransitTests.A6P5_*,
2 DoorCollisionApparatusTests.Apparatus_DeadCenter_*,
5 DoorBugTrajectoryReplayTests, 1
CellarUpTrajectoryReplayTests.LiveCompare_FirstCap_FixClosesCottageFloorCap).
Total: 20/20 pass including the new 7-test predicate suite.
The DocumentsBug test (Apparatus_Grounded_50cmOffCenter) fails
post-fix BUT was already failing pre-fix in the worktree baseline
(verified by stashing the fix and re-running — same failure mode:
sphere blocks at start with floor normal (0,0,1)). Not in the
keep-green list, so this is a known pre-existing condition; the
test's own header comment instructs flipping the assertion when
the fix lands.
Investigation:
docs/research/2026-05-25-a6-door-cyl-retail-dispatch-investigation.md
Needs visual verification at Holtburg cottage door (NE/SE approach
should now slide smoothly along the door face — zero [cyl-test]
log lines attributed to door entity, replaced by [cyl-skip-bsp]).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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