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Implement more complex area modifications (#260)

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This implements rcAreaModification which allows combining of area types when they overlap
and otherwise usage of the area type as a bit mask.
This commit is contained in:
Domenico Albani
2017-03-12 12:18:29 +01:00
committed by Jakob Botsch Nielsen
parent ef3ea40f7a
commit 433986a5a4
15 changed files with 200 additions and 134 deletions
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RecastDemo/Source/Sample_TileMesh.cpp
+3 -19
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@@ -1039,7 +1039,7 @@ unsigned char* Sample_TileMesh::buildTileMesh(const int tx, const int ty, const
memset(m_triareas, 0, nctris*sizeof(unsigned char));
rcMarkWalkableTriangles(m_ctx, m_cfg.walkableSlopeAngle,
verts, nverts, ctris, nctris, m_triareas);
verts, nverts, ctris, nctris, m_triareas, SAMPLE_AREAMOD_GROUND);
if (!rcRasterizeTriangles(m_ctx, verts, nverts, ctris, m_triareas, nctris, *m_solid, m_cfg.walkableClimb))
return 0;
@@ -1092,7 +1092,7 @@ unsigned char* Sample_TileMesh::buildTileMesh(const int tx, const int ty, const
// (Optional) Mark areas.
const ConvexVolume* vols = m_geom->getConvexVolumes();
for (int i = 0; i < m_geom->getConvexVolumeCount(); ++i)
rcMarkConvexPolyArea(m_ctx, vols[i].verts, vols[i].nverts, vols[i].hmin, vols[i].hmax, (unsigned char)vols[i].area, *m_chf);
rcMarkConvexPolyArea(m_ctx, vols[i].verts, vols[i].nverts, vols[i].hmin, vols[i].hmax, vols[i].areaMod, *m_chf);
// Partition the heightfield so that we can use simple algorithm later to triangulate the walkable areas.
@@ -1226,23 +1226,7 @@ unsigned char* Sample_TileMesh::buildTileMesh(const int tx, const int ty, const
// Update poly flags from areas.
for (int i = 0; i < m_pmesh->npolys; ++i)
{
if (m_pmesh->areas[i] == RC_WALKABLE_AREA)
m_pmesh->areas[i] = SAMPLE_POLYAREA_GROUND;
if (m_pmesh->areas[i] == SAMPLE_POLYAREA_GROUND ||
m_pmesh->areas[i] == SAMPLE_POLYAREA_GRASS ||
m_pmesh->areas[i] == SAMPLE_POLYAREA_ROAD)
{
m_pmesh->flags[i] = SAMPLE_POLYFLAGS_WALK;
}
else if (m_pmesh->areas[i] == SAMPLE_POLYAREA_WATER)
{
m_pmesh->flags[i] = SAMPLE_POLYFLAGS_SWIM;
}
else if (m_pmesh->areas[i] == SAMPLE_POLYAREA_DOOR)
{
m_pmesh->flags[i] = SAMPLE_POLYFLAGS_WALK | SAMPLE_POLYFLAGS_DOOR;
}
m_pmesh->flags[i] = sampleAreaToFlags(m_pmesh->areas[i]);
}
dtNavMeshCreateParams params;