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Include door blocking in the cast mesh

This commit is contained in:
Jarrod Doyle 2024-12-09 10:09:13 +00:00
parent adf61c0f6f
commit 5538a0e3ea
Signed by: Jayrude
GPG Key ID: 38B57B16E7C0ADF7
2 changed files with 30 additions and 20 deletions
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1
KeepersCompound.Lightmapper/LightMapper.cs
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@ -129,6 +129,7 @@ public class LightMapper
private void BuildLightList()
{
// TODO: Doors aren't blocking lights, seems to be lighttable related
_lights.Clear();
// Get the chunks we need

49
KeepersCompound.Lightmapper/MeshBuilder.cs
View File

@ -5,11 +5,13 @@ using KeepersCompound.LGS.Database.Chunks;
namespace KeepersCompound.Lightmapper;
// TODO: Rename to CastSurfaceType?
public enum SurfaceType
{
Solid,
Sky,
Water,
Air,
}
public class Mesh(int triangleCount, List<Vector3> vertices, List<int> indices, List<SurfaceType> triangleSurfaceMap)
@ -35,17 +37,36 @@ public class MeshBuilder
var numPolys = cell.PolyCount;
var numRenderPolys = cell.RenderPolyCount;
var numPortalPolys = cell.PortalPolyCount;
// There's nothing to render
if (numRenderPolys == 0 || numPortalPolys >= numPolys)
{
continue;
}
var solidPolys = numPolys - numPortalPolys;
var cellIdxOffset = 0;
for (var polyIdx = 0; polyIdx < numRenderPolys; polyIdx++)
for (var polyIdx = 0; polyIdx < numPolys; polyIdx++)
{
// There's 3 types of poly that we need to include in the mesh:
// - Terrain
// - Water surfaces
// - Door vision blockers
//
// Door vision blockers are the interesting one. They're not RenderPolys at all, and we only include
// them in the mesh if the cell only has two of them (otherwise the door is in the middle of the air)
SurfaceType primType;
if (polyIdx < solidPolys)
{
primType = cell.RenderPolys[polyIdx].TextureId == 249 ? SurfaceType.Sky : SurfaceType.Solid;
}
else if (polyIdx < numRenderPolys)
{
primType = SurfaceType.Water;
}
else if (cell is { Flags: 24, PortalPolyCount: 2 }) // TODO: Work out what these flags are!!
{
primType = SurfaceType.Solid;
}
else
{
continue;
}
var poly = cell.Polys[polyIdx];
polyVertices.Clear();
polyVertices.EnsureCapacity(poly.VertexCount);
@ -54,18 +75,6 @@ public class MeshBuilder
polyVertices.Add(cell.Vertices[cell.Indices[cellIdxOffset + i]]);
}
// We need to know what type of surface this poly is so we can map Embree primitive IDs to surface
// types
var renderPoly = cell.RenderPolys[polyIdx];
var primType = SurfaceType.Solid;
if (renderPoly.TextureId == 249)
{
primType = SurfaceType.Sky;
} else if (polyIdx >= solidPolys)
{
primType = SurfaceType.Water;
}
AddPolygon(polyVertices, primType);
cellIdxOffset += poly.VertexCount;
}