public override List <PieceMove> GetMovesMask(Board board, Point position)
{
List <PieceMove> ret = new List <PieceMove>();
BitBoard locked = new BitBoard();
board[position] = null;
board.ForEach(
(Piece piece) => piece.GetColour() != GetColour(),
(Point point) => locked |= board[point].GetSeen(board, point));
board[position] = this;
IEnumerable <Point> kingMoves = GetSeen(board, position).GetAllSet().Where(kingMove => !locked[kingMove] && board[kingMove]?.GetColour() != GetColour());
foreach (Point kingMove in kingMoves)
{
ret.Add(new PieceMove(new Vector(position, kingMove), board[kingMove] == null? MoveType.Move : MoveType.Capture));
}
if (!board.GetHistory().Any(historicalMove => historicalMove.p2 == position))
{
foreach (CastelingMask mask in castelingMasks)
{
if (!board.GetHistory().Any(historicalMove => historicalMove.p1 == new Point(mask.rookInitial, position.y)) && Extentions.Extentions.Enumerate(position.x, mask.kingFinal).All(kingMoveX => board.FindAttacks(GetColour(), new Point(kingMoveX, position.y)).Count() == 0) && Extentions.Extentions.Enumerate(mask.rookInitial, position.x).SubArray(1, 1).All(movedThrough => board[movedThrough, position.y] == null))
{
ret.Add(new PieceMove(new Vector(position, new Point(mask.kingFinal, position.y)), new Vector[] { new Vector(new Point(mask.rookInitial, position.y), new Point(mask.rookFinal, position.y)) }, MoveType.Move));
}
}
}
return(ret);
}