public bool IsMoveLegal(Move move)
{
if (((1ul << move.From) & Occupancy[ColorToMove]) == 0)
{
return(false);
}
var fromPiece = PieceTable[move.From];
switch (fromPiece)
{
case Piece.Pawn: return(PawnOperator.IsMoveLegal(this, move));
case Piece.Knight: return(KnightOperator.IsMoveLegal(this, move));
case Piece.Bishop: return(BishopOperator.IsMoveLegal(this, move));
case Piece.Rook: return(RookOperator.IsMoveLegal(this, move));
case Piece.Queen: return(QueenOperator.IsMoveLegal(this, move));
case Piece.King: return(KingOperator.IsMoveLegal(this, move));
}
return(false);
}
public static int Evaluate(BoardState board, int color, int openingPhase, int endingPhase, ref ulong fieldsAttackedByColor)
{
var mobility = KnightOperator.GetMobility(board, color, ref fieldsAttackedByColor) +
BishopOperator.GetMobility(board, color, ref fieldsAttackedByColor) +
RookOperator.GetMobility(board, color, ref fieldsAttackedByColor) +
QueenOperator.GetMobility(board, color, ref fieldsAttackedByColor);
var mobilityOpeningScore = mobility * EvaluationConstants.Mobility;
return(TaperedEvaluation.AdjustToPhase(mobilityOpeningScore, 0, openingPhase, endingPhase));
}
public int GetAvailableCaptureMoves(Span <Move> moves)
{
var movesCount = PawnOperator.GetAvailableCaptureMoves(this, moves, 0);
movesCount = KnightOperator.GetAvailableCaptureMoves(this, moves, movesCount);
movesCount = BishopOperator.GetAvailableCaptureMoves(this, moves, movesCount);
movesCount = RookOperator.GetAvailableCaptureMoves(this, moves, movesCount);
movesCount = QueenOperator.GetAvailableCaptureMoves(this, moves, movesCount);
movesCount = KingOperator.GetAvailableCaptureMoves(this, moves, movesCount);
return(movesCount);
}
public int GetQuietMoves(Span <Move> moves, int offset, ulong evasionMask)
{
var movesCount = PawnOperator.GetQuietMoves(this, moves, offset, evasionMask);
movesCount = KnightOperator.GetQuietMoves(this, moves, movesCount, evasionMask);
movesCount = BishopOperator.GetQuietMoves(this, moves, movesCount, evasionMask);
movesCount = RookOperator.GetQuietMoves(this, moves, movesCount, evasionMask);
movesCount = QueenOperator.GetQuietMoves(this, moves, movesCount, evasionMask);
movesCount = KingOperator.GetQuietMoves(this, moves, movesCount);
return(movesCount);
}
public int GetLoudMoves(Span <Move> moves, int offset)
{
var movesCount = PawnOperator.GetLoudMoves(this, moves, offset);
movesCount = KnightOperator.GetLoudMoves(this, moves, movesCount);
movesCount = BishopOperator.GetLoudMoves(this, moves, movesCount);
movesCount = RookOperator.GetLoudMoves(this, moves, movesCount);
movesCount = QueenOperator.GetLoudMoves(this, moves, movesCount);
movesCount = KingOperator.GetLoudMoves(this, moves, movesCount);
return(movesCount);
}
public static int Evaluate(BoardState board, int color, int openingPhase, int endingPhase, ref ulong fieldsAttackedByColor)
{
var(knightCenter, knightOutside) = KnightOperator.GetMobility(board, color, ref fieldsAttackedByColor);
var(bishopCenter, bishopOutside) = BishopOperator.GetMobility(board, color, ref fieldsAttackedByColor);
var(rookCenter, rookOutside) = RookOperator.GetMobility(board, color, ref fieldsAttackedByColor);
var(queenCenter, queenOutside) = QueenOperator.GetMobility(board, color, ref fieldsAttackedByColor);
var centerMobility = knightCenter + bishopCenter + rookCenter + queenCenter;
var centerMobilityScore = centerMobility * EvaluationConstants.CenterMobilityModifier;
var outsideMobility = knightOutside + bishopOutside + rookOutside + queenOutside;
var outsideMobilityScore = outsideMobility * EvaluationConstants.OutsideMobilityModifier;
var openingScore = centerMobilityScore + outsideMobilityScore;
return(TaperedEvaluation.AdjustToPhase(openingScore, 0, openingPhase, endingPhase));
}