public virtual int GenerateMoves(Board board, int[] moves, int mIndex)
{
this.moves = moves;
bbAttacks = BitboardAttacks.GetInstance();
moveIndex = mIndex;
all = board.GetAll();
// only for clearity
mines = board.GetMines();
others = board.GetOthers();
byte index = 0;
long square = unchecked((long)(0x1L));
while (square != 0)
{
if (board.GetTurn() == ((square & board.whites) != 0))
{
if ((square & board.rooks) != 0)
{
// Rook
GenerateMovesFromAttacks(Move.ROOK, index, bbAttacks.GetRookAttacks(index, all));
}
else
{
if ((square & board.bishops) != 0)
{
// Bishop
GenerateMovesFromAttacks(Move.BISHOP, index, bbAttacks.GetBishopAttacks(index, all
));
}
else
{
if ((square & board.queens) != 0)
{
// Queen
GenerateMovesFromAttacks(Move.QUEEN, index, bbAttacks.GetRookAttacks(index, all));
GenerateMovesFromAttacks(Move.QUEEN, index, bbAttacks.GetBishopAttacks(index, all
));
}
else
{
if ((square & board.kings) != 0)
{
// King
GenerateMovesFromAttacks(Move.KING, index, bbAttacks.king[index]);
}
else
{
if ((square & board.knights) != 0)
{
// Knight
GenerateMovesFromAttacks(Move.KNIGHT, index, bbAttacks.knight[index]);
}
else
{
if ((square & board.pawns) != 0)
{
// Pawns
if ((square & board.whites) != 0)
{
if (((square << 8) & all) == 0)
{
AddMoves(Move.PAWN, index, index + 8, (square << 8), false, true, 0);
// Two squares if it is in he first row
if (((square & BitboardUtils.b2_d) != 0) && (((square << 16) & all) == 0))
{
AddMoves(Move.PAWN, index, index + 16, (square << 16), false, false, 0);
}
}
GeneratePawnCapturesFromAttacks(index, bbAttacks.pawnUpwards[index], board.GetPassantSquare
());
}
else
{
if ((((long)(((ulong)square) >> 8)) & all) == 0)
{
AddMoves(Move.PAWN, index, index - 8, ((long)(((ulong)square) >> 8)), false, true
, 0);
// Two squares if it is in he first row
if (((square & BitboardUtils.b2_u) != 0) && ((((long)(((ulong)square) >> 16)) & all
) == 0))
{
AddMoves(Move.PAWN, index, index - 16, ((long)(((ulong)square) >> 16)), false, false
, 0);
}
}
GeneratePawnCapturesFromAttacks(index, bbAttacks.pawnDownwards[index], board.GetPassantSquare
());
}
}
}
}
}
}
}
}
square <<= 1;
index++;
}
square = board.kings & mines;
// my king
byte myKingIndex = unchecked((byte)(-1));
// Castling: disabled when in check or squares attacked
if ((((all & (board.GetTurn() ? unchecked((long)(0x06L)) : unchecked((long)(0x0600000000000000L
)))) == 0 && (board.GetTurn() ? board.GetWhiteKingsideCastling() : board.GetBlackKingsideCastling
()))))
{
myKingIndex = BitboardUtils.Square2Index(square);
if (!board.GetCheck() && !bbAttacks.IsIndexAttacked(board, unchecked((byte)(myKingIndex
- 1)), board.GetTurn()) && !bbAttacks.IsIndexAttacked(board, unchecked((byte)(myKingIndex
- 2)), board.GetTurn()))
{
AddMoves(Move.KING, myKingIndex, myKingIndex - 2, 0, false, false, Move.TYPE_KINGSIDE_CASTLING
);
}
}
if ((((all & (board.GetTurn() ? unchecked((long)(0x70L)) : unchecked((long)(0x7000000000000000L
)))) == 0 && (board.GetTurn() ? board.GetWhiteQueensideCastling() : board.GetBlackQueensideCastling
()))))
{
if (myKingIndex == -1)
{
myKingIndex = BitboardUtils.Square2Index(square);
}
if (!board.GetCheck() && !bbAttacks.IsIndexAttacked(board, unchecked((byte)(myKingIndex
+ 1)), board.GetTurn()) && !bbAttacks.IsIndexAttacked(board, unchecked((byte)(myKingIndex
+ 2)), board.GetTurn()))
{
AddMoves(Move.KING, myKingIndex, myKingIndex + 2, 0, false, false, Move.TYPE_QUEENSIDE_CASTLING
);
}
}
return moveIndex;
}
public static long[] GetKey(Board board)
{
long[] key = new long[] { 0, 0 };
long square = BitboardUtils.H1;
byte index = 0;
int color = 0;
while (square != 0)
{
color = (square & board.whites) != 0 ? 0 : 1;
key[color] ^= GetKeyPieceIndex(index, board.GetPieceAt(square));
square <<= 1;
index++;
}
if (board.GetWhiteKingsideCastling())
{
key[0] ^= whiteKingSideCastling;
}
if (board.GetWhiteQueensideCastling())
{
key[0] ^= whiteQueenSideCastling;
}
if (board.GetBlackKingsideCastling())
{
key[1] ^= blackKingSideCastling;
}
if (board.GetBlackQueensideCastling())
{
key[1] ^= blackQueenSideCastling;
}
// passant flags only when pawn can capture
long passant = board.GetPassantSquare();
if ((passant != 0) && (((!board.GetTurn() && (((passant << 9) | (passant << 7)) &
board.blacks & board.pawns) != 0)) || ((board.GetTurn() && ((((long)(((ulong)passant
) >> 9)) | ((long)(((ulong)passant) >> 7))) & board.whites & board.pawns) != 0))
))
{
color = board.GetTurn() ? 0 : 1;
// TODO test
key[1 - color] ^= passantColumn[BitboardUtils.GetColumn(passant)];
}
if (board.GetTurn())
{
key[0] ^= whiteMove;
}
return key;
}