public FigureMoving(FigureOnSquare fs, Square to, Figure promotion = Figure.none)
{
this.figure = fs.figure;
this.from = fs.square;
this.to = to;
this.promotion = promotion;
}
public List <string> GetAllValidMovesForFigureAt(int x, int y)
{
var validMoves = new List <string>();
var targetSquare = new Square(x, y);
if (!targetSquare.IsOnBoard())
{
return(validMoves);
}
var targetFigure = board.GetFigureAt(targetSquare);
if (targetFigure == Figure.None || targetFigure.GetColor() != board.MoveColor)
{
return(validMoves);
}
var figureOnSquare = new FigureOnSquare(targetFigure, targetSquare);
MovingFigure movingFigure;
foreach (var squareTo in Square.YieldSquares())
{
movingFigure = new MovingFigure(figureOnSquare, squareTo);
if (currentMove.CanMove(movingFigure) &&
!board.IsCheckAfterMove(movingFigure))
{
validMoves.Add(((char)('a' + squareTo.X)).ToString() + (squareTo.Y + 1));
}
}
if (targetFigure == Figure.BlackKing || targetFigure == Figure.WhiteKing)
{
if (CanKingCastle(true))
{
validMoves.Add($"g{y + 1}");
}
if (CanKingCastle(false))
{
validMoves.Add($"c{y + 1}");
}
}
return(validMoves);
}
public IChessGame Castle(bool isToKingside)
{
var isWhiteSide = board.MoveColor == Moves.Helpers.Color.White;
var king = (isWhiteSide) ? Figure.WhiteKing : Figure.BlackKing;
var rookFigure = (isWhiteSide) ? Figure.WhiteRook : Figure.BlackRook;
var y = (isWhiteSide) ? 0 : 7;
var stepX = (isToKingside) ? 1 : -1;
FigureOnSquare rook;
if (stepX == -1)
{
rook = new FigureOnSquare(rookFigure, new Square(0, y));
}
else
{
rook = new FigureOnSquare(rookFigure, new Square(7, y));
}
var firstKingDestSquare = new Square(4 + stepX, y);
var finalKingDestSquare = new Square(firstKingDestSquare.X + stepX, y);
var nextBoard = board.Castle(new MovingFigure(new FigureOnSquare(king, new Square(4, y)), finalKingDestSquare), new MovingFigure(rook, firstKingDestSquare));
return(new ChessGame(nextBoard));
}
