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test(render): deterministic re-pop anchor for the bounded-propagation pin

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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erik 2026-06-08 12:52:46 +02:00
parent e6fe4c611a
commit a866c510e3
1 changed files with 26 additions and 0 deletions
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26
tests/AcDream.App.Tests/Rendering/PortalVisibilityBuilderTests.cs
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@ -185,6 +185,32 @@ public class PortalVisibilityBuilderTests
Assert.False(frame.OutsideView.IsEmpty);
}
[Fact]
public void Build_ViewGrowthAfterDoneCell_RePopsGrownCell()
{
// Same A->B(near LEFT) + A->D(far RIGHT) + D->B(later) topology as
// Build_ViewGrowthAfterDoneCell_PropagatesNewSlicesToExit: B is popped via LEFT, then D grows B
// through RIGHT after B is done -> B re-pops. This is retail-faithful late growth (kept by the fix).
const uint A = 0x0001, B = 0x0002, D = 0x0003;
var a = Cell(A, new CellPortalInfo((ushort)B, 0, 0, 0), new CellPortalInfo((ushort)D, 1, 0, 0));
a.PortalPolygons.Add(QuadX(-0.9f, -0.3f, -2f));
a.PortalPolygons.Add(QuadX(0.3f, 0.9f, -5f));
var b = Cell(B, new CellPortalInfo((ushort)A, 0, 0, 0),
new CellPortalInfo(0xFFFF, 1, 0, 0), new CellPortalInfo((ushort)D, 2, 0, 0));
b.PortalPolygons.Add(QuadX(-0.9f, -0.3f, -2f));
b.PortalPolygons.Add(QuadX(0.3f, 0.9f, -3f));
b.PortalPolygons.Add(QuadX(0.3f, 0.9f, -5f));
var d = Cell(D, new CellPortalInfo((ushort)B, 0, 0, 2));
d.PortalPolygons.Add(QuadX(0.3f, 0.9f, -5f));
var all = new Dictionary<uint, LoadedCell> { [A] = a, [B] = b, [D] = d };
var frame = Build(a, all);
// Membership (the flap-relevant output) is each cell once, regardless of re-pops.
Assert.Equal(new[] { B }, frame.OrderedVisibleCells.Where(c => c == B).ToArray());
Assert.Contains(D, frame.OrderedVisibleCells);
}
[Fact]
public void Builder_SealedCellar_NoExitPortal_OutsideViewEmpty()
{