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fix(physics): traverse prepared indoor portal topology

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This commit is contained in:
Erik 2026-07-27 00:02:44 +02:00
parent b12d94047c
commit 4d095be286
9 changed files with 400 additions and 5 deletions
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89
tests/AcDream.Core.Tests/Physics/CellTransitFindTransitCellsSphereTests.cs
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@ -16,6 +16,7 @@ public class CellTransitFindTransitCellsSphereTests
Root = new CellBSPNode
{
// Local x >= 0 is inside this synthetic cell.
Type = DatReaderWriter.Enums.BSPNodeType.BPIn,
SplittingPlane = new Plane(new Vector3(1f, 0f, 0f), 0f),
PosNode = leaf,
}
@ -28,6 +29,7 @@ public class CellTransitFindTransitCellsSphereTests
// Portal poly at local x=2.5 (right wall), normal +X.
var portalPolyA = new ResolvedPolygon
{
Id = 10,
Vertices = new[]
{
new Vector3(2.5f, -2.5f, 0f),
@ -54,6 +56,24 @@ public class CellTransitFindTransitCellsSphereTests
};
}
private static CellPhysics PrepareCell(CellPhysics graphCell, uint sourceId)
{
FlatCellCollisionAsset prepared =
FlatCollisionAssetBuilder.FlattenCell(graphCell);
return new CellPhysics
{
SourceId = sourceId,
WorldTransform = graphCell.WorldTransform,
InverseWorldTransform = graphCell.InverseWorldTransform,
Resolved = new Dictionary<ushort, ResolvedPolygon>(),
FlatPhysicsBsp = prepared.Structure.PhysicsBsp,
FlatContainmentBsp = prepared.Structure.ContainmentBsp,
FlatPortalPolygons = prepared.Structure.PortalPolygons,
FlatTopology = prepared.Topology,
Portals = graphCell.Portals,
};
}
[Fact]
public void SphereInsideCellA_NearPortal_AddsCellB()
{
@ -216,4 +236,73 @@ public class CellTransitFindTransitCellsSphereTests
Assert.True(exitOutside);
}
[Fact]
public void PreparedExitPortal_UsesIndexedPlaneWithoutGraphDictionary()
{
const uint cellId = 0xA9B40100u;
CellPhysics graphCell = MakeCellWithPortalAtRightWall(
Matrix4x4.Identity,
otherCellId: 0xFFFF,
flags: 0);
CellPhysics preparedCell = PrepareCell(graphCell, cellId);
var cache = PhysicsDataCache.CreateProduction();
cache.RegisterCellStructForTest(cellId, preparedCell);
var candidates = new HashSet<uint>();
CellTransit.FindTransitCellsSphere(
cache,
preparedCell,
cellId,
new Vector3(2.0f, 0f, 2.5f),
sphereRadius: 0.5f,
candidates,
out bool exitOutside);
Assert.Null(preparedCell.PortalPolygons);
Assert.True(exitOutside);
}
[Fact]
public void PreparedLoadedNeighbor_UsesFlatContainmentWithoutGraphObjects()
{
const uint cellAId = 0xA9B40100u;
const uint cellBId = 0xA9B40101u;
CellPhysics graphCellA = MakeCellWithPortalAtRightWall(
Matrix4x4.Identity,
otherCellId: 0x0101,
flags: 2);
var cellBTransform = Matrix4x4.CreateTranslation(
new Vector3(5f, 0f, 0f));
Matrix4x4.Invert(cellBTransform, out Matrix4x4 cellBInverse);
var graphCellB = new CellPhysics
{
WorldTransform = cellBTransform,
InverseWorldTransform = cellBInverse,
Resolved = new Dictionary<ushort, ResolvedPolygon>(),
CellBSP = SinglePlaneCellBsp(),
};
CellPhysics preparedCellA = PrepareCell(graphCellA, cellAId);
CellPhysics preparedCellB = PrepareCell(graphCellB, cellBId);
var cache = PhysicsDataCache.CreateProduction();
cache.RegisterCellStructForTest(cellAId, preparedCellA);
cache.RegisterCellStructForTest(cellBId, preparedCellB);
var candidates = new HashSet<uint>();
CellTransit.FindTransitCellsSphere(
cache,
preparedCellA,
cellAId,
new Vector3(4.75f, 0f, 2.5f),
sphereRadius: 0.5f,
candidates,
out bool exitOutside);
Assert.Null(preparedCellA.PortalPolygons);
Assert.Null(preparedCellB.CellBSP);
Assert.Contains(cellBId, candidates);
Assert.False(exitOutside);
}
}