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Recast: skip overlapping traverse links

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If a traverse type can't overlap, but does overlap with a polygon, then don't add it. This fixes the issue where the jump links run flat over the navmesh surface.
This commit is contained in:
Kawe Mazidjatari 2024-08-10 00:50:46 +02:00
parent 66b493b6b7
commit 3090634cbd
1 changed files with 33 additions and 0 deletions
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33
src/thirdparty/recast/Detour/Source/DetourNavMeshBuilder.cpp vendored
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@ -613,6 +613,12 @@ TraverseType_e GetBestTraverseType(const float slopeAngle, const unsigned char t
return bestTraverseType;
}
bool CanOverlapPoly(const TraverseType_e traverseType)
{
// todo(amos): find the best threshold...
return s_traverseTypes[traverseType].minSlope > 5.0f;
}
// TODO: create lookup table and look for distance + slope to determine the
// correct jumpType.
// TODO: make sure we don't generate duplicate pairs of jump types between
@ -683,6 +689,33 @@ static void connectTileTraverseLinks(dtNavMesh* const nav, dtMeshTile* const til
const TraverseType_e traverseType = GetBestTraverseType(slopeAngle, distance, samePolyGroup);
if (!CanOverlapPoly(traverseType))
{
bool overlaps = false;
float linkMidPoint[3];
rdVsad(linkMidPoint, startPolyEdgeMid, endPolyEdgeMid, 0.5f);
for (int e = 0; e < tile->header->polyCount; e++)
{
const dtPoly* posTestPoly = &tile->polys[e];
float polyVerts[DT_VERTS_PER_POLYGON*3];
const int nverts = posTestPoly->vertCount;
for (int o = 0; o < nverts; ++o)
rdVcopy(&polyVerts[o * 3], &tile->verts[posTestPoly->verts[o] * 3]);
if (rdPointInPolygon(linkMidPoint, polyVerts, nverts))
{
overlaps = true;
break;
}
}
if (overlaps)
continue;
}
if (traverseType != DT_NULL_TRAVERSE_TYPE)
{
// Need at least 2 links