public static void AssignLoudValues(BoardState board, Span <Move> moves, Span <short> moveValues, int movesCount, int depth, Move hashOrPvMove)
{
for (var moveIndex = 0; moveIndex < movesCount; moveIndex++)
{
if (hashOrPvMove == moves[moveIndex])
{
moveValues[moveIndex] = MoveOrderingConstants.HashMove;
}
else if (moves[moveIndex].Flags == MoveFlags.EnPassant)
{
moveValues[moveIndex] = MoveOrderingConstants.EnPassant;
}
else if (((byte)moves[moveIndex].Flags & MoveFlagFields.Promotion) != 0)
{
moveValues[moveIndex] = (short)(MoveOrderingConstants.Promotion + (int)moves[moveIndex].Flags);
}
else if (moves[moveIndex].IsCapture())
{
var enemyColor = ColorOperations.Invert(board.ColorToMove);
var attackingPiece = board.PieceTable[moves[moveIndex].From];
var capturedPiece = board.PieceTable[moves[moveIndex].To];
var attackers = board.GetAttackingPiecesWithColor(board.ColorToMove, moves[moveIndex].To);
var defenders = board.GetAttackingPiecesWithColor(enemyColor, moves[moveIndex].To);
var seeEvaluation = StaticExchangeEvaluation.Evaluate(attackingPiece, capturedPiece, attackers, defenders);
moveValues[moveIndex] = (short)(MoveOrderingConstants.Capture + seeEvaluation);
}
else if (moves[moveIndex].Flags == MoveFlags.KingCastle || moves[moveIndex].Flags == MoveFlags.QueenCastle)
{
moveValues[moveIndex] = MoveOrderingConstants.Castling;
}
else
{
moveValues[moveIndex] = MoveOrderingConstants.PawnNearPromotion;
}
}
}
public static void AssignQValues(BoardState board, Span <Move> moves, Span <short> moveValues, int movesCount)
{
var enemyColor = ColorOperations.Invert(board.ColorToMove);
for (var moveIndex = 0; moveIndex < movesCount; moveIndex++)
{
if (moves[moveIndex].Flags == MoveFlags.EnPassant)
{
moveValues[moveIndex] = MoveOrderingConstants.EnPassant;
}
else
{
var attackingPiece = board.PieceTable[moves[moveIndex].From];
var capturedPiece = board.PieceTable[moves[moveIndex].To];
var attackers = board.GetAttackingPiecesWithColor(board.ColorToMove, moves[moveIndex].To);
var defenders = board.GetAttackingPiecesWithColor(enemyColor, moves[moveIndex].To);
var seeEvaluation = StaticExchangeEvaluation.Evaluate(attackingPiece, capturedPiece, attackers, defenders);
moveValues[moveIndex] = seeEvaluation;
}
}
}