// Find chunks within render distance which are not yet being loaded
// and tell the chunk loader thread to load them
private void loadNewChunks()
{
Vector3Int p = getPlayerChunkPos();
playerChunkPosition = p;
if (!p.Equals(prevPlayerChunkPos))
{
Queue <ChunkLoaderThread.ChunkRequest> toQueue = new Queue <ChunkLoaderThread.ChunkRequest>();
for (int y_ = 0; y_ < Constants.RENDER_DISTANCE; y_++)
{
// Alternate back and forth
//So y= 0,1,-1,2,-2,3,-3, etc.
int y = -((y_ % 2) * 2 - 1) * ((y_ + 1) / 2);
// Load each layer of chunks in rings from player position outwards
for (int i = 0; i < Constants.RENDER_DISTANCE; i++)
{
for (int x = -i; x <= i; x++)
{
for (int z = -i; z <= i; z++)
{
if (x == -i || x == i || z == -i || z == i)
{
if (chunkCoordsToLength(x, y_, z) <= Constants.RENDER_DISTANCE)
{
ulong key = Chunk.getHashKey1(p.x + x, p.y + y, p.z + z);
if (!allChunks.ContainsKey(key))
{
// Chunk has not been loaded before, create new chunk object
Chunk c = new Chunk(p.x + x, p.y + y, p.z + z);
allChunks.Add(c.getHashKey(), c);
toQueue.Enqueue(new ChunkLoaderThread.ChunkRequest(p.x + x, p.y + y, p.z + z));
}
else
{
// Chunk has been loaded before
Chunk c = (Chunk)allChunks[key];
if (c.destroyed)
{
// Chunk was loaded but went out of render distance and was freed
c.destroyed = false;
toQueue.Enqueue(new ChunkLoaderThread.ChunkRequest(p.x + x, p.y + y, p.z + z));
}
}
}
}
}
}
}
}
// Get players direction in each axis (-1/0/1) and send chunk requests
Vector3Int playerDirection = new Vector3Int();
Vector3 rotation = cameraControl.GetRotation();
rotation.y %= 360.0f;
if (rotation.y < 0)
{
rotation.y += 360;
}
playerDirection.y = rotation.x > 15.0f ? -1 : (rotation.x > -15.0f ? 0 : 1);
if ((rotation.y > 360 - 15 || rotation.y < 15) || (rotation.y > 180 - 15 && rotation.y < 180 + 15))
{
playerDirection.x = 0;
}
else
{
playerDirection.x = rotation.y < 180 ? 1 : -1;
}
if ((rotation.y > 90 - 15 && rotation.y < 90 + 15) || (rotation.y > 270 - 15 && rotation.y < 270 + 15))
{
playerDirection.z = 0;
}
else
{
playerDirection.z = (rotation.y > 90 && rotation.y < 270) ? -1 : 1;
}
chunkLoaderThread.queueChunks(toQueue, p, playerDirection);
}
prevPlayerChunkPos = p;
}