public void CreateChunk(int x, int y, int z)
{
MeshInstance newChunk = new MeshInstance();
var id = newChunk.GetInstanceId();
newChunk.SetScript(chunkScript);
Chunk chunk = GD.InstanceFromId(id) as Chunk;
chunk.SetGenerator(terrainGen);
chunk.ConstructChunk(chunkSize, x, y, z);
AddChild(chunk);
chunks.Add(new Vector3(x, y, z), chunk);
}