private (bool Castled, string Error) CastleQueenSide(Board.Board board)
{
KeyValuePair <int, int> rookPos, rookMove, kingMove;
if (this.Color == PieceColorEnum.Black)
{
rookPos = board.ConvertNotationForMove("a8");
rookMove = board.ConvertNotationForMove("d8");
kingMove = board.ConvertNotationForMove("c8");
}
else
{
rookPos = board.ConvertNotationForMove("a1");
rookMove = board.ConvertNotationForMove("d1");
kingMove = board.ConvertNotationForMove("c1");
}
// can't castle if it puts in check. run a simulation
King kingCopy = (King)board.DeepClone(this);
Board.Board simBoard = (Board.Board)board.DeepClone(board);
simBoard.MovePiece(kingCopy, kingMove.Key, kingMove.Value);
if (!kingCopy.IsInCheck(simBoard))
{
return(false, "castling results in a check");
}
// castle
Rook rook = (Rook)board.Instance[rookPos.Key, rookPos.Value];
board.MovePiece(rook, rookMove.Key, rookMove.Value);
board.MovePiece(this, kingMove.Key, kingMove.Value);
return(true, string.Empty);
}
private bool IsIllegalMove(Move move)
{
var tempBoard = new Board.Board(_board);
tempBoard.MovePiece(move);
return(IsCheck(move.Color, tempBoard));
}
private void PerformMove(Move move)
{
_board.MovePiece(move);
if (IsCheck(move.Color.Opposite(), _board))
{
move.IsCheck = true;
}
if (IsCheckMate(move.Color.Opposite(), _board))
{
move.IsMate = true;
}
_signalBus.Fire(new PerformMoveSignal(move));
_possibleLegalMoves.Clear();
}
private List <Move> GetAntiCheckMoves(PieceColor color, Board.Board board)
{
var antiCheckMoves = new List <Move>();
foreach (var data in board.ChessPieceData.Where(d => d.Color == color))
{
var possibleMoves = GetPossibleMoves(data.Position, board);
foreach (var possibleMove in possibleMoves)
{
var tempBoard = new Board.Board(board);
tempBoard.MovePiece(possibleMove);
if (!IsCheck(color, tempBoard))
{
antiCheckMoves.Add(possibleMove);
}
}
}
return(antiCheckMoves);
}