public (bool Castled, string Error) Castle(CastleTypeEnum castleType, Board.Board board)
{
if (castleType == CastleTypeEnum.Kingside)
{
return(CastleKingSide(board));
}
else
{
return(CastleQueenSide(board));
}
}
public (bool CanCastle, string Error) CanCastle(CastleTypeEnum castleType, Board.Board board)
{
if (this.HasMoved)
{
return(false, "king has moved");
}
if (this.IsInCheck(board))
{
return(false, "king is in check");
}
if (castleType == CastleTypeEnum.Kingside)
{
return(CanCastleKingSide(board));
}
else
{
return(CanCastleQueenSide(board));
}
}
public static void Main(string[] args)
{
Board board = new Board(args[0]);
PieceColorEnum?winner = null;
bool isCheckMate = false;
bool isDraw = false;
bool validMove = false;
while (!isCheckMate && !isDraw)
{
Console.WriteLine($"\n{board.ColorToMove}'s move");
board.PrintBoardWithTakenPieces();
validMove = false;
Console.Write(" > ");
var command = Console.ReadLine().Trim();
if (command == "stats")
{
Console.WriteLine($"black score: {board.BlackScore}, white score: {board.WhiteScore}");
}
if (command == "flip")
{
board = board.FlipBoard();
}
else if (command.Contains("0-0"))
{
// castle
CastleTypeEnum castleType = CastleTypeEnum.Queenside;
var king = board.ColorToMove == PieceColorEnum.Black ? board.BlackKing : board.WhiteKing;
if (command == "0-0")
{
// castle kingside
castleType = CastleTypeEnum.Kingside;
}
else if (command == "0-0-0")
{
// castle queenside
castleType = CastleTypeEnum.Queenside;
}
var canCastleResult = king.CanCastle(castleType, board);
if (canCastleResult.CanCastle)
{
var castleResult = king.Castle(castleType, board);
if (castleResult.Castled)
{
validMove = true;
}
else
{
Console.WriteLine($"can't castle {castleType}, {castleResult.Error}");
}
}
else
{
Console.WriteLine($"can't castle {castleType}, {canCastleResult.Error}");
}
}
else
{
try
{
var commands = command.Split(' ');
var startPos = board.ConvertNotationForMove(commands[0]);
var endPos = board.ConvertNotationForMove(commands[1]);
var piece = board.Instance[startPos.Key, startPos.Value];
if (piece != null && piece.Color == board.ColorToMove)
{
var moves = piece.AvailableMoves(board);
if (moves.Contains(new KeyValuePair <int, int>(endPos.Key, endPos.Value)))
{
// valid move
board.MovePiece(piece, endPos.Key, endPos.Value);
validMove = true;
}
else
{
Console.WriteLine($"piece at {commands[0]} can't move to {commands[1]}");
}
}
else if (piece == null)
{
Console.WriteLine($"piece at {commands[0]} not found");
}
else
{
Console.WriteLine($"piece at {commands[0]} isn't yours to move");
}
}
catch
{
Console.WriteLine($"invalid command");
}
}
if (validMove)
{
// see if there's a resulting check or mate
King king = board.ColorToMove == PieceColorEnum.Black ? board.WhiteKing : board.BlackKing;
var isCheckOrMate = board.IsCheckOrMate(king);
if (isCheckOrMate.IsMate && isCheckOrMate.IsCheck)
{
// check & mate
isCheckMate = true;
winner = board.ColorToMove;
}
else if (isCheckOrMate.IsCheck)
{
// check
Console.WriteLine("check");
}
// check if it's stalemate
if (board.IsStaleMate(board.ColorToMove == PieceColorEnum.Black ? PieceColorEnum.White : PieceColorEnum.Black))
{
isDraw = true;
}
board.ColorToMove = board.ColorToMove == PieceColorEnum.Black ? PieceColorEnum.White : PieceColorEnum.Black;
}
}
if (winner != null)
{
Console.WriteLine($"check mate - game over. {winner} wins!");
}
else
{
Console.WriteLine($"draw - game over.");
}
Console.WriteLine($"black score: {board.BlackScore}, white score: {board.WhiteScore}");
Console.ReadLine();
}
