public void UnloadAllChunks()
{
List <Vec2i> chunkKeys = new List <Vec2i>();
foreach (KeyValuePair <Vec2i, LoadedChunk2> kpv in LoadedChunks)
{
chunkKeys.Add(kpv.Key);
Destroy(kpv.Value.gameObject);
}
LoadedChunks.Clear();
EntityManager.Instance?.UnloadChunks(chunkKeys);
}