/// <summary>
/// Can reuse the same neighbourhood if operating on positions within
/// the same chunk, otherwise the light manager expects a neighbourhood
/// centered on the chunk containing the modified voxel.
/// Adjusts voxel pos to be relative to the center chunk.
/// </summary>
/// <param name="voxelPos"></param>
/// <returns></returns>
private ChunkNeighbourhood neighbourhoodFor(ref Vector3Int voxelPos)
{
//ChunkId is elementwise integer division by the Chunk dimensions
var chunkId = voxelPos.ElementWise((a, b) => Mathf.FloorToInt(a / (float)b), chunkDimensions);
var remainder = voxelPos.ElementWise((a, b) => a % b, chunkDimensions);
//Local voxel index is the remainder, with negatives adjusted
voxelPos = remainder.ElementWise((a, b) => a < 0 ? b + a : a, chunkDimensions);
return(new ChunkNeighbourhood(chunkId, GetMockChunkData));
}
public static Vector3Int ModuloChunkDimensions(Vector3Int position, Vector3Int chunkDimensions)
{
var remainder = position.ElementWise((a, b) => a % b, chunkDimensions);
//Local voxel index is the remainder, with negatives adjusted
return(remainder.ElementWise((a, b) => a < 0 ? b + a : a, chunkDimensions));
}
bool InsideRadius(Vector3Int displacement, Vector3Int Radii)
{
Vector3Int absDisplacement = displacement.ElementWise(Mathf.Abs);
//Inside if all elements of the absolute displacement are less than or equal to the radius
return(absDisplacement.All((a, b) => a <= b, Radii));
}
public static void AdjustForBounds(ref Vector3Int localPos, ref Vector3Int chunkId, Vector3Int chunkDimensions)
{
//Result is elementwise integer division by the Chunk dimensions
var offset = localPos.ElementWise((a, b) => Mathf.FloorToInt(a / (float)b), chunkDimensions);
chunkId += offset;
localPos = ModuloChunkDimensions(localPos, chunkDimensions);
}
Vector3Int WorldToChunkPos(Vector3 pos, Vector3Int ChunkDimensions)
{
Vector3Int floor = new Vector3Int();
floor.x = Mathf.FloorToInt(pos.x);
floor.y = Mathf.FloorToInt(pos.y);
floor.z = Mathf.FloorToInt(pos.z);
//Result is elementwise integer division by the Chunk dimensions
Vector3Int result = floor.ElementWise((a, b) => Mathf.FloorToInt(a / (float)b), ChunkDimensions);
return(result);
}