public void Clone(TileKnowledge tileKnowledge)
{
path = tileKnowledge.path;
tiles.Clear();
tileIDPool = tileKnowledge.tileIDPool;
for (int i = 0; i < tileKnowledge.tiles.Count; ++i)
{
TileType tileType = new TileType();
tileType.Clone(tileKnowledge.tiles [i]);
tiles.Add(tileType);
}
}