public Chunk GetChunk(int x, int z, ChunkStatus status, bool nonnull)
{
if (Thread.CurrentThread != _mainThread)
{
throw new Exception("Wrong Thread");
}
var positionHash = ChunkPos.AsLong(x, z);
for (int i = 0; i < 4; i++)
{
if (_recentPositions[i] != positionHash || _recentStatuses[i] != status)
{
continue;
}
var recentChunk = _recentChunks[i];
if (recentChunk != null || !nonnull)
{
return(recentChunk);
}
}
var task = ProvideChunk(x, z, status, nonnull);
var chunk = task.GetAwaiter().GetResult();
if (chunk == null && nonnull)
{
throw new Exception("Chunk not there when requested");
}
UpdateCache(positionHash, chunk, status);
return(chunk);
}