public Piece ExecuteMove(Position origin, Position destiny)
{
Piece p = GameBoard.removePiece(origin);
p.incrementMoveCount();
Piece capturedPiece = GameBoard.removePiece(destiny);
GameBoard.placePiece(p, destiny);
if (capturedPiece != null)
{
captured.Add(capturedPiece);
}
// #specialmove short King's Indian Defense
if (p is King && destiny.Column == origin.Column + 2)
{
Position originRook = new Position(origin.Line, origin.Column + 3);
Position destinyRook = new Position(origin.Line, origin.Column + 1);
Piece rook = GameBoard.removePiece(originRook);
rook.incrementMoveCount();
GameBoard.placePiece(rook, destinyRook);
}
// #specialmove long King's Indian Defense
if (p is King && destiny.Column == origin.Column - 2)
{
Position originRook = new Position(origin.Line, origin.Column - 4);
Position destinyRook = new Position(origin.Line, origin.Column - 1);
Piece rook = GameBoard.removePiece(originRook);
rook.incrementMoveCount();
GameBoard.placePiece(rook, destinyRook);
}
// #specialmove En Passant
if (p is Pawn)
{
if (origin.Column != destiny.Column && capturedPiece == null)
{
Position posPawn;
if (p.color == Color.White)
{
posPawn = new Position(destiny.Line + 1, destiny.Column);
}
else
{
posPawn = new Position(destiny.Line - 1, destiny.Column);
}
capturedPiece = GameBoard.removePiece(posPawn);
captured.Add(capturedPiece);
}
}
return(capturedPiece);
}
public void MakePlay(Position origin, Position destiny)
{
Piece piece = ExecuteMove(origin, destiny);
if (KingInCheck(CurrentPlayer))
{
UndoMove(origin, destiny, piece);
throw new BoardException("You can't put yourself in check!");
}
Piece p = GameBoard.piece(destiny);
// #specialmove Promote pawn
if (p is Pawn)
{
if ((p.color == Color.White && destiny.Line == 0) || (p.color == Color.Black && destiny.Line == 7))
{
p = GameBoard.removePiece(destiny);
gamePieces.Remove(p);
Piece queen = new Queen(GameBoard, p.color);
GameBoard.placePiece(queen, destiny);
gamePieces.Add(queen);
}
}
if (KingInCheck(rival(CurrentPlayer)))
{
Check = true;
}
else
{
Check = false;
}
if (testCheckMate(rival(CurrentPlayer)))
{
Finished = true;
}
else
{
Turn++;
changePlayer();
}
// #specialmove En Passant
if (p is Pawn && (destiny.Line == origin.Line + 2 || destiny.Line == origin.Line - 2))
{
enPassantDanger = p;
}
else
{
enPassantDanger = null;
}
}
public void UndoMove(Position origin, Position destiny, Piece capturedPiece)
{
Piece p = GameBoard.removePiece(destiny);
p.decrementMoveCount();
if (capturedPiece != null)
{
GameBoard.placePiece(capturedPiece, destiny);
captured.Remove(capturedPiece);
}
GameBoard.placePiece(p, origin);
// #specialmove short King's Indian Defense
if (p is King && destiny.Column == origin.Column + 2)
{
Position originRook = new Position(origin.Line, origin.Column + 3);
Position destinyRook = new Position(origin.Line, origin.Column + 1);
Piece rook = GameBoard.removePiece(destinyRook);
rook.decrementMoveCount();
GameBoard.placePiece(rook, originRook);
}
// #specialmove long King's Indian Defense
if (p is King && destiny.Column == origin.Column - 2)
{
Position originRook = new Position(origin.Line, origin.Column - 4);
Position destinyRook = new Position(origin.Line, origin.Column - 1);
Piece rook = GameBoard.removePiece(destinyRook);
rook.decrementMoveCount();
GameBoard.placePiece(rook, originRook);
}
// #specialmove En Passant
if (p is Pawn)
{
if (origin.Column != destiny.Column && capturedPiece == enPassantDanger)
{
Piece pawn = GameBoard.removePiece(destiny);
Position posPawn;
if (p.color == Color.White)
{
posPawn = new Position(3, destiny.Column);
}
else
{
posPawn = new Position(4, destiny.Column);
}
GameBoard.placePiece(pawn, posPawn);
}
}
}
public void placeNewPiece(char column, int line, Piece piece)
{
GameBoard.placePiece(piece, new ChessPosition(column, line).ToPosition());
gamePieces.Add(piece);
}