/// <summary>
/// Creates a new chunk located at the given x and z index coordinates.
/// </summary>
private Node <TItem> GenerateChunk(int xIndex, int zIndex)
{
int xWorld, zWorld;
WorldIndexCoordinateTransform.ConvertIndexToWorld(_worldScale,
xIndex, zIndex, out xWorld, out zWorld);
Rect rect = new Rect(xWorld, zWorld, xWorld + _worldScale, zWorld + _worldScale);
return(new Node <TItem>(rect));
}
/// <summary>
/// Returns the chunk located at the given x and z world coordinates.
/// </summary>
private Node <TItem> GetChunk(int xWorld, int zWorld)
{
int xIndex, zIndex;
WorldIndexCoordinateTransform.ConvertWorldToIndex(_worldScale,
xWorld, zWorld, out xIndex, out zIndex);
if (xIndex >= _chunks.GetLength(0) || zIndex >= _chunks.GetLength(1))
{
_chunks = GrowArray(_chunks, xIndex + 1, zIndex + 1, GenerateChunk);
}
return(_chunks[xIndex, zIndex]);
}
