private WalkResult Walk(BSP bsp)
{
var pair = bsp.Split();
if (pair.Length == 2)
{
return(JoinResult(
Walk(pair[0]),
Walk(pair[1])
));
}
else
{
var firstIdx3 = coct.CollisionList.Count;
var vifPacketIndices = new List <ushort>();
foreach (var point in pair[0].Points)
{
var mesh = point.bigMesh;
vifPacketIndices.AddRange(mesh.vifPacketIndices);
foreach (var set in TriangleStripsToTriangleFans(mesh.triangleStripList))
{
var quad = set.Count == 4;
var v1 = mesh.vertexList[set[0]];
var v2 = mesh.vertexList[set[1]];
var v3 = mesh.vertexList[set[2]];
var v4 = quad ? mesh.vertexList[set[3]] : Vector3.Zero;
coct.CompleteAndAdd(
new Collision
{
Vertex1 = helper.AllocateVertex(v1.X, -v1.Y, -v1.Z), // why -Y and -Z ?
Vertex2 = helper.AllocateVertex(v2.X, -v2.Y, -v2.Z),
Vertex3 = helper.AllocateVertex(v3.X, -v3.Y, -v3.Z),
Vertex4 = Convert.ToInt16(quad ? helper.AllocateVertex(v4.X, -v4.Y, -v4.Z) : -1),
SurfaceFlagsIndex = helper.AllocateSurfaceFlags(mesh.matDef.surfaceFlags),
},
inflate: 1
);
}
}
var lastIdx3 = coct.CollisionList.Count;
var firstIdx2 = coct.CollisionMeshList.Count;
var collisionMesh = coct.CompleteAndAdd(
new CollisionMesh
{
CollisionStart = Convert.ToUInt16(firstIdx3),
CollisionEnd = Convert.ToUInt16(lastIdx3),
}
);
vifPacketRenderingGroup.Add(
vifPacketIndices
.Distinct()
.ToArray()
);
return(new WalkResult
{
meshIndex = firstIdx2,
});
}
}