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Revert "fix(phys): A6.P3 #98 — gate ContactPlane assignment by Normal.Z (Shape 1)"

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This reverts commit 0cb4c59681.
This commit is contained in:
Erik 2026-05-23 16:54:19 +02:00
parent 0cb4c59681
commit 402ec10ec5
2 changed files with 2 additions and 31 deletions
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21
src/AcDream.Core/Physics/BSPQuery.cs
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@ -1230,17 +1230,7 @@ public static class BSPQuery
var worldNormal = TransformNormal(polyHit.Plane.Normal, localToWorld);
var worldVertices = TransformVertices(polyHit.Vertices, localToWorld, scale, worldOrigin);
var worldPlane = BuildWorldPlane(worldNormal, worldVertices);
// A6.P3 #98 (2026-05-23): gate ContactPlane assignment by Normal.Z.
// Retail's cdb capture shows CP is only ever set to flat polygons
// (Normal.Z = 1.0); the cellar ramp (Normal.Z = 0.695) is never CP.
// Setting CP=ramp made AdjustOffset slope-project forward motion
// and caused the sphere to wedge at the ramp top when step-up's
// downward probe couldn't find cottage floor (which is ABOVE).
// Polygons that fail this gate still drive collision detection
// and walkable-polygon tracking — they just don't become CP.
if (worldNormal.Z >= PhysicsGlobals.ContactPlaneFlatThreshold)
collisions.SetContactPlane(worldPlane, path.CheckCellId, false);
collisions.SetContactPlane(worldPlane, path.CheckCellId, false);
path.SetWalkable(worldPlane, worldVertices, Vector3.UnitZ);
@ -1780,14 +1770,7 @@ public static class BSPQuery
var worldNormal = TransformNormal(hitPoly.Plane.Normal, localToWorld);
var worldVertices = TransformVertices(hitPoly.Vertices, localToWorld, scale, worldOrigin);
var worldPlane = BuildWorldPlane(worldNormal, worldVertices);
// A6.P3 #98 (2026-05-23): same Normal.Z gate as
// AdjustSphereToPlane above — only flat polygons become CP.
// Sloped walkable polygons (cellar ramp etc.) drive collision
// and walkable tracking but don't override the resting CP.
if (worldNormal.Z >= PhysicsGlobals.ContactPlaneFlatThreshold)
collisions.SetContactPlane(worldPlane, path.CheckCellId, false);
collisions.SetContactPlane(worldPlane, path.CheckCellId, false);
path.SetWalkable(worldPlane, worldVertices, Vector3.UnitZ);
if (PhysicsDiagnostics.ProbeBuildingEnabled || PhysicsDiagnostics.ProbeIndoorBspEnabled)