public bool IsChecked(ChessColor kingColor)
{
var king = chessBoard.GetKing(kingColor);
return(chessBoard.Pieces
.Where(p => p.Color != kingColor)
.Any(p => movement
.GetAvailableMoves(p)
.Any(m => m.FinishedPosition == king.Position)
));
}
public IEnumerable <ChessMove> GetAvailableLegalMoves(IReadOnlyChessPiece chessPiece)
{
var filteredMoves = new List <ChessMove>();
foreach (var chessMove in movement.GetAvailableMoves(chessPiece))
{
chessBoard.Move(chessMove);
if (!checkDetector.IsChecked(chessPiece.Color))
{
filteredMoves.Add(chessMove);
}
chessBoard.ReverseLastMove();
}
return(filteredMoves);
}
private bool ArePositionsBeingAttacked(IReadOnlyChessPiece king)
{
int y = king.Position.Y;
int lastX = king.Position.X - 2;
var enemyPieces = chessBoard.Pieces
.Where(p => p.Color == king.Color.Opposite())
.ToList();
for (int x = king.Position.X; x >= lastX; x--)
{
var position = new Position(x, y);
foreach (var piece in enemyPieces)
{
var isAttacked = movement
.GetAvailableMoves(piece)
.Any(m => m.FinishedPosition == position);
if (isAttacked)
{
return(true);
}
}
}
return(false);
}