public void CullChunks()
{
Vector3 checkPosition;
Vector3 checkSize;
checkSize.x = Chunk.SIZE;
checkSize.y = Chunk.SIZE;
checkSize.z = Chunk.SIZE;
UpdateCameraFrustrumPlanes();
int numberOfChunks = ChunkRepository.NumberOfChunks();
for (int chunkIndex = 0; chunkIndex < numberOfChunks; chunkIndex++)
{
Chunk chunk = ChunkRepository.GetChunkAtIndex(chunkIndex);
checkPosition.x = chunk.WorldPosition().x *Chunk.SIZE + Chunk.SIZE / 2;
checkPosition.y = chunk.WorldPosition().y *Chunk.SIZE + Chunk.SIZE / 2;
checkPosition.z = chunk.WorldPosition().z *Chunk.SIZE + Chunk.SIZE / 2;
if (CubeIsWithinFrustrum(checkPosition, checkSize))
{
chunk.Show();
}
else
{
chunk.Hide();
}
}
}
// TODO -- Split up this function to make it shorter and more manageable
public void CleanupOldChunks()
{
// TODO -- This is a weird place to update the worldviewposition
worldViewPositionX = (int)(Camera.main.transform.position.x / Chunk.SIZE);
worldViewPositionZ = (int)(Camera.main.transform.position.z / Chunk.SIZE);
for (int xIttr = 0; xIttr < Configuration.CHUNK_VIEW_DISTANCE * 2 + 1; xIttr++)
{
for (int yIttr = 0; yIttr < chunkArrayHeight; yIttr++)
{
for (int zIttr = 0; zIttr < Configuration.CHUNK_VIEW_DISTANCE * 2 + 1; zIttr++)
{
loadedChunksCheckArray[xIttr, yIttr, zIttr] = false;
}
}
}
// Get rid of chunks that are too far from the camera
for (int chunkIndex = 0; chunkIndex < ChunkRepository.NumberOfChunks(); chunkIndex++)
{
Chunk chunk = ChunkRepository.GetChunkAtIndex(chunkIndex);
// If the chunk is out of range now, return it
int xDiff = Mathf.Abs(chunk.WorldPosition().x - worldViewPositionX);
int zDiff = Mathf.Abs(chunk.WorldPosition().z - worldViewPositionZ);
if ((xDiff > Configuration.CHUNK_VIEW_DISTANCE) ||
(zDiff > Configuration.CHUNK_VIEW_DISTANCE))
{
ChunkSpacePosition location = chunk.WorldPosition();
ChunkRepository.SetChunkAtPosition(location, null);
ChunkRepository.Remove(chunk);
chunk.MarkForUnload();
unloadChunksList.Add(chunk);
}
else
{
int markX = (chunk.WorldPosition().x - worldViewPositionX) + Configuration.CHUNK_VIEW_DISTANCE;
int markZ = (chunk.WorldPosition().z - worldViewPositionZ) + Configuration.CHUNK_VIEW_DISTANCE;
loadedChunksCheckArray[markX, chunk.WorldPosition().y, markZ] = true;
}
}
}
