private void GenerateChunks()
{
// Which direction is the player pointing in?
Vector3 pov = Camera.main.transform.rotation * Vector3.forward;
pov.y = 0; // Flatten it as we want it to be horizontal
// Iterate through x, y, z
for (int x = _playerPos.x - _viewRangeHorizontal - 1; x <= _playerPos.x + _viewRangeHorizontal + 1; ++x)
{
for (int z = _playerPos.z - _viewRangeHorizontal - 1; z <= _playerPos.z + _viewRangeHorizontal + 1; ++z)
{
Int2 grid = new Int2(x, z);
// Does column exist?
if (!_columns.ContainsKey(grid))
{
// Create new data column
DataColumn newDataColumn = new DataColumn(grid);
// Store in map
_columns[grid] = newDataColumn;
}
for (int y = _playerPos.y - _viewRangeVertical - 1; y <= _playerPos.y + _viewRangeVertical + 1; ++y)
{
Int3 pos = new Int3(x, y, z);
// Does chunk exist?
if (!_chunks.ContainsKey(pos) && Distance(pos, _playerPos) <= _viewRangeHorizontal)
{
// Create new chunk and get corresponding script
GameObject newChunk = Instantiate(_chunkPrefab, new Vector3(x * _chunkSize, y * _chunkSize, z * _chunkSize), Quaternion.identity);
Chunk newChunkScript = newChunk.GetComponent <Chunk>();
DataChunk newDataChunk;
if (_offloadChunks.ContainsKey(pos))
{
// Retrieve from offload
newDataChunk = _offloadChunks[pos];
// Give data chunk gameobject
newDataChunk.SetChunk(newChunkScript);
// Remove from offload
_offloadChunks.Remove(pos);
}
else
{
// Create new data chunk
newDataChunk = new DataChunk(pos, newChunkScript);
}
// Let chunk know its corresponding data chunk and position
newChunkScript.LoadData(pos, newDataChunk);
// Should chunk render yet?
newChunkScript.SetRender(CubeDistance(_playerPos, pos) <= _viewRangeHorizontal);
// Get angle difference between vectors
Vector3 dir = pos.Vector() * _chunkSize - Camera.main.transform.position;
float dist = dir.magnitude;
float diff = Vector3.Angle(pov, dir);
float final = dist + diff;
if (dist < _chunkSize * 2f) // Prioritize chunks immediately closest
{
final = dist;
}
// Queue chunk for generation
_loadQueue.Enqueue(newChunkScript, final);
// Store in map
_chunks[pos] = newDataChunk;
}
}
}
}
// Are there chunks that need generation?
if (!_rendering && _loadQueue.Count > 0)
{
_rendering = true;
new Thread(RenderThread).Start();
}
}