private static bool isOwnKingAttackable(ChessBoard cb, ColoredBitBoard legalMove, ChessPieceColors color)
{
List <ColoredBitBoard> legalMoves = new List <ColoredBitBoard>();
EmptyBitBoard blackPieces = new EmptyBitBoard();
EmptyBitBoard whitePieces = new EmptyBitBoard();
EmptyBitBoard allPieces = new EmptyBitBoard();
cb.Update(legalMove);
blackPieces = MoveGenUtils.SetBlackBoard(cb);
whitePieces = MoveGenUtils.SetWhiteBoard(cb);
allPieces = MoveGenUtils.SetWholeBoard(cb);
legalMoves.AddRange(GeneratePseudoLegalNonSlidingMoves(cb, color, blackPieces, whitePieces, allPieces));
legalMoves.AddRange(GeneratePseudoLegalSlidingMoves(cb, color, blackPieces, whitePieces, allPieces));
foreach (ColoredBitBoard cbb in legalMoves)
{
if (color == ChessPieceColors.White && (cb.BlackKing.Bits & cbb.Bits) != 0)
{
cb.Undo();
return(true);
}
else if (color == ChessPieceColors.Black && (cb.WhiteKing.Bits & cbb.Bits) != 0)
{
cb.Undo();
return(true);
}
}
cb.Undo();
return(false);
}
private static bool isEnemyKingAttackable(ChessBoard cb, ColoredBitBoard legalMove, ChessPieceColors color)
{
List <ColoredBitBoard> legalMoves = new List <ColoredBitBoard>();
EmptyBitBoard blackPieces = new EmptyBitBoard();
EmptyBitBoard whitePieces = new EmptyBitBoard();
EmptyBitBoard allPieces = new EmptyBitBoard();
cb.Update(legalMove);
blackPieces = MoveGenUtils.SetBlackBoard(cb);
whitePieces = MoveGenUtils.SetWhiteBoard(cb);
allPieces = MoveGenUtils.SetWholeBoard(cb);
if (legalMove is PawnBitBoard)
{
legalMoves.AddRange(PawnMoveGen.PawnBitBoardResults(cb, color, blackPieces, whitePieces, allPieces));
}
else if (legalMove is BishopBitBoard)
{
legalMoves.AddRange(BishopMoveGen.BishopBitBoardResults(cb, color, blackPieces, whitePieces, allPieces));
}
else if (legalMove is KingBitBoard)
{
legalMoves.AddRange(KingMoveGen.KingBitBoardResults(cb, color, blackPieces, whitePieces, allPieces));
}
else if (legalMove is KnightBitBoard)
{
legalMoves.AddRange(KnightMoveGen.KnightBitBoardResults(cb, color, blackPieces, whitePieces, allPieces));
}
else if (legalMove is QueenBitBoard)
{
legalMoves.AddRange(QueenMoveGen.QueenBitBoardResults(cb, color, blackPieces, whitePieces, allPieces));
}
else if (legalMove is RookBitBoard)
{
legalMoves.AddRange(RookMoveGen.RookBitBoardResults(cb, color, blackPieces, whitePieces, allPieces));
}
foreach (ColoredBitBoard cbb in legalMoves)
{
if (color == ChessPieceColors.White && (cb.BlackKing.Bits & cbb.Bits) != 0)
{
cb.Undo();
return(true);
}
else if (color == ChessPieceColors.Black && (cb.WhiteKing.Bits & cbb.Bits) != 0)
{
cb.Undo();
return(true);
}
}
cb.Undo();
return(false);
}
public static List <ColoredBitBoard> GenerateLegalMoves(ChessBoard inputChessBoard, ChessPieceColors color)
{
List <ColoredBitBoard> result = new List <ColoredBitBoard>();
EmptyBitBoard blackPieces = MoveGenUtils.SetBlackBoard(inputChessBoard);
EmptyBitBoard whitePieces = MoveGenUtils.SetWhiteBoard(inputChessBoard);
EmptyBitBoard allPieces = MoveGenUtils.SetWholeBoard(inputChessBoard);
result.AddRange(GeneratePseudoLegalNonSlidingMoves(inputChessBoard, color, blackPieces, whitePieces, allPieces));
result.AddRange(GeneratePseudoLegalSlidingMoves(inputChessBoard, color, blackPieces, whitePieces, allPieces));
result = RemoveOwnKingChecks(inputChessBoard, result, color);
result = SetDoesCheck(inputChessBoard, result, color);
var sortedMoves = MoveGenUtils.SortMoves(result, inputChessBoard, blackPieces, whitePieces);
return(sortedMoves);
}
public static List <ColoredBitBoard> SortMovesByCapturing(List <ColoredBitBoard> legalMoves, ChessBoard inputChessBoard, BitBoard blackMoves, BitBoard whiteMoves)
{
List <ColoredBitBoard> capturing = new List <ColoredBitBoard>();
List <ColoredBitBoard> nonCapturing = new List <ColoredBitBoard>();
List <ColoredBitBoard> result = new List <ColoredBitBoard>();
//Sets the IsCapturing flag on all moves that is a capturing move
SetIsCapturing(legalMoves, blackMoves, whiteMoves);
foreach (ColoredBitBoard cbb in legalMoves)
{
if (cbb.IsCapturing)
{
capturing.Add(cbb);
}
else
{
nonCapturing.Add(cbb);
}
}
result.AddRange(MoveGenUtils.SortCapturingMoves(capturing, inputChessBoard));
result.AddRange(nonCapturing);
return(result);
}