public static bool IsSafe(ChessBoard board)
{
Square current = Piece.GetPosition(board, (sbyte)DefaultPieces.WhiteKing);
char file = current.file; int rank = current.rank;
List <Square> result = WhitePiece.GetPossibleBlackAttackersToSquare(board, current);
return(result.Count == 0);
}
public static List <ChessBoard> GetPossiblePositions(ChessBoard board, char file, sbyte rank)
{
List <ChessBoard> result = new List <ChessBoard>();
ChessBoard tempboard;
List <Square> moves = new List <Square>();
Square current = new Square(file, rank);
WhitePiece.GetDiagonalDestinations(board, ref moves, current, 1, 1);
WhitePiece.GetDiagonalDestinations(board, ref moves, current, 1, -1);
WhitePiece.GetDiagonalDestinations(board, ref moves, current, -1, 1);
WhitePiece.GetDiagonalDestinations(board, ref moves, current, -1, -1);
foreach (Square move in moves)
{
tempboard = Piece.PerformMove(board, current, move);
result = Piece.AddNewPosition(result, tempboard, true);
}
return(result);
}
public static List <ChessBoard> GetPossiblePositions(ChessBoard board, char file, sbyte rank)
{
List <ChessBoard> result = new List <ChessBoard>();
ChessBoard tempboard;
List <Square> moves = new List <Square>();
Square current = new Square(file, rank);
WhitePiece.GetVerticalUpDestinations(board, moves, current);
WhitePiece.GetVerticalDownDestinations(board, moves, current);
WhitePiece.GetHorizontalLeftDestinations(board, moves, current);
WhitePiece.GetHorizontalRightDestinations(board, moves, current);
Console.WriteLine(moves.Count);
foreach (Square move in moves)
{
tempboard = Piece.PerformMove(board, current, move);
result = Piece.AddNewPosition(result, tempboard, true);
}
Console.WriteLine(result.Count);
return(result);
}
public static List <Square> GetPossibleWhiteAttackersToSquare(ChessBoard board, Square goalsquare)
{
ChessBoard tempboard = board.ShallowCopy();
tempboard.DebugConsoleSimpleDraw();
Console.WriteLine();
tempboard.ReverseSides();
//tempboard.DebugConsoleSimpleDraw();
Square tempsquare = new Square(goalsquare.file, goalsquare.rank);
tempsquare.Reverse();
var result = WhitePiece.GetPossibleBlackAttackersToSquare(tempboard, tempsquare);
for (int i = 0; i < result.Count; i++)
{
Square temp = result[i];
temp.Reverse();
result[i] = temp;
}
return(result);
}
private static ChessBoard PerformBlackNonAmbiguousMove(ChessBoard board, string notation, ChessBoard tempboard)
{
char goalfile = notation[1];
sbyte goalrank = (sbyte)Char.GetNumericValue(notation[2]);
//Check if piece is not-ambigious and get piece square
List <Square> PossibleMovers = WhitePiece.GetPossibleBlackAttackersToSquare(board, new Square(goalfile, goalrank));
int NumberOfSamePieces = 0;
Square PieceSquare = new Square();
foreach (Square tempsquare in PossibleMovers)
{
if (board[tempsquare.file, tempsquare.rank] == GetSbyteFromBlackPieceLetter(notation[0]))
{
NumberOfSamePieces++;
PieceSquare = tempsquare;
}
}
if (NumberOfSamePieces != 1)
{
throw new ArgumentException("wrong notation");
}
tempboard[PieceSquare.file, PieceSquare.rank] = 0;
tempboard[goalfile, goalrank] = GetSbyteFromBlackPieceLetter(notation[0]);
GetPiecePositionsType piecefunction = GetBlackPiecePositionsType(notation[0]);
if (piecefunction(board, PieceSquare.file, PieceSquare.rank).Contains(tempboard))
{
if (board[PieceSquare.file, PieceSquare.rank] == (sbyte)DefaultPieces.BlackRook && (DefaultInfo.BlackAsideRookIsUnMoved || DefaultInfo.BlackHsideRookIsUnMoved))
{
if (DefaultInfo.BlackAsideRookIsUnMoved && !DefaultInfo.BlackHsideRookIsUnMoved)
{
DefaultInfo.BlackAsideRookIsUnMoved = false;
}
else if (!DefaultInfo.BlackAsideRookIsUnMoved && DefaultInfo.BlackHsideRookIsUnMoved)
{
DefaultInfo.BlackHsideRookIsUnMoved = false;
}
else
{
char rookfile;
for (rookfile = 'a'; rookfile <= 'h'; rookfile++)
{
if (board[rookfile, 8] == (sbyte)DefaultPieces.BlackRook)
{
break;
}
}
if (rookfile < PieceSquare.file)
{
DefaultInfo.BlackHsideRookIsUnMoved = false;
}
else
{
DefaultInfo.BlackAsideRookIsUnMoved = false;
}
}
}
return(tempboard);
}
else
{
throw new ArgumentException("wrong move");
}
}