void CrazyhouseBoard::generateMovesForPiece(QVarLengthArray<Move>& moves,
int pieceType,
int square) const
{
// Generate drops
if (square == 0)
{
const int size = arraySize();
const int maxRank = height() - 2;
for (int i = 0; i < size; i++)
{
Piece tmp = pieceAt(i);
if (!tmp.isEmpty())
continue;
if (pieceType == Pawn)
{
Square sq(chessSquare(i));
if (sq.rank() < 1 || sq.rank() > maxRank)
continue;
}
moves.append(Move(0, i, pieceType));
}
}
else
WesternBoard::generateMovesForPiece(moves, pieceType, square);
}
/*! Returns true if the king of \a side can reach the eighth rank */
bool RacingKingsBoard::canFinish(Side side)
{
QVarLengthArray<Move> moves;
WesternBoard::generateMovesForPiece(moves, King, kingSquare(side));
for (const Move& m: moves)
{
Square targetSq = chessSquare(m.targetSquare());
if (targetSq.rank() == 7
&& vIsLegalMove(m) )
return true;
}
return false;
}
bool HordeBoard::vIsLegalMove(const Move& m)
{
if (!StandardBoard::vIsLegalMove(m))
return false;
/*
* Workaround for Stockfish (lichess.org) asymmetry:
* accept en passant on 3rd (6th) rank only.
*/
int src = m.sourceSquare();
int tgt = m.targetSquare();
Piece piece = pieceAt(src);
if (piece.type() != Pawn
|| tgt != enpassantSquare())
return true;
int targetRank = chessSquare(tgt).rank();
return targetRank == 2 || targetRank == height() - 3;
}
/*! Returns true if the king of \a side is on the eighth rank */
bool RacingKingsBoard::finished(Side side) const
{
Square ksq = chessSquare(kingSquare(side));
return (ksq.rank() == 7);
}
