private void updateVisibleChunks(Point2 offset, Point2 windowSize)
{
windowSize = ((offset + windowSize).ToVector2() / ChunkSize).Ceiling();
offset = (offset.ToVector2() / ChunkSize).Floor();
windowSize -= offset;
chunkEntities.ForEach((e, _) => e.Visible = false);
var visible = new List <Entity>();
windowSize.ForEach(p =>
{
p += offset;
var chunk = chunkEntities[p];
if (chunk == null)
{
return;
}
visible.Add(chunkEntities[p]);
if (chunk.Mesh == null || dirtyChunks.Contains(p))
{
updateChunk(p);
}
});
visible.ForEach(e => e.Visible = true);
chunkEntities.Values.Except(visible).ForEach(e => e.Visible = false);
}
private IMesh BuildChunkMesh(Point2 offset, Point2 size)
{
IMesh batch = new RAMMesh();
size.ForEach(p =>
{
var v = world.GetVoxel(p + new Point2(offset));
if (v == null)
{
return;
}
var mesh = meshProvider.GetMesh(v);
if (mesh == null)
{
return;
}
var vWorld = Matrix.Scaling(new Vector3(world.VoxelSize.X))
* Matrix.Translation(((p.ToVector2() + new Vector2(0.5f)) * world.VoxelSize.X).ToXZ(v.Data.Height));
MeshBuilder.AppendMeshTo(meshProvider.GetMesh(v), batch, vWorld);
});
var optimizer = new MeshOptimizer();
batch = optimizer.CreateOptimized(batch);
return(batch);
}
