public VoxelMaterial GetVoxel(Point3 pos)
{
if (IsOutside(pos))
{
return(null);
}
return(terrainChunk.GetVoxelInternal(pos).Filled ? mat : null);
}
private void clearVisible()
{
for (int index = 0; index < visibleBlocks.Count; index++)
{
var b = visibleBlocks[index];
TerrainChunk.GetVoxelInternal(ref b).Visible = false;
}
visibleBlocks.Clear();
}
private static VoxelBlock getChunkVoxelWrapper(VoxelTerrainChunk chunk, Point3 point)
{
var voxelInternal = chunk.GetVoxelInternal(ref point);
if (voxelInternal == null)
{
return(null);
}
return(new VoxelBlock(point, chunk, voxelInternal));
}
public VoxelBlock Raycast(Ray ray, out VoxelBlock emptyTargetedBlock)
{
VoxelBlock last = null;
VoxelBlock ret = null;
var traverser = new GridTraverser();
float?closest = null;
foreach (VoxelTerrainChunk terr in TW.Data.Objects.Where(o => o is VoxelTerrainChunk))
{
var trace = new RayTrace();
trace.Ray = ray;
float?dist = trace.Ray.xna().Intersects(terr.GetBoundingBox().xna());
if (!dist.HasValue)
{
continue;
}
if (closest.HasValue && closest.Value < dist.Value)
{
continue;
}
trace.Start = dist.Value + 0.001f;
traverser.NodeSize = terr.NodeSize;
traverser.GridOffset = terr.WorldPosition;
//TODO: fix multiple terrains
var hit = false;
VoxelTerrainChunk terr1 = terr;
traverser.Traverse(trace, delegate(Point3 arg)
{
if (!terr1.InGrid(arg))
{
return(true);
}
var voxelBlock = terr1.GetVoxelInternal(ref arg);
if (voxelBlock == null)
{
return(false);
}
if (voxelBlock.Filled)
{
hit = true;
ret = getChunkVoxelWrapper(terr1, arg);
return(true);
}
last = getChunkVoxelWrapper(terr1, arg);
return(false);
});
if (hit)
{
closest = dist;
}
}
emptyTargetedBlock = last;
return(ret);
}