Score Evaluator::calculateMaterialScore(const Position& position) const {
Score score = Score::zero();
auto& blackHand = position.getBlackHand();
score += material::Pawn * blackHand.get(PieceType::pawn ());
score += material::Lance * blackHand.get(PieceType::lance ());
score += material::Knight * blackHand.get(PieceType::knight());
score += material::Silver * blackHand.get(PieceType::silver());
score += material::Gold * blackHand.get(PieceType::gold ());
score += material::Bishop * blackHand.get(PieceType::bishop());
score += material::Rook * blackHand.get(PieceType::rook ());
auto& whiteHand = position.getWhiteHand();
score -= material::Pawn * whiteHand.get(PieceType::pawn ());
score -= material::Lance * whiteHand.get(PieceType::lance ());
score -= material::Knight * whiteHand.get(PieceType::knight());
score -= material::Silver * whiteHand.get(PieceType::silver());
score -= material::Gold * whiteHand.get(PieceType::gold ());
score -= material::Bishop * whiteHand.get(PieceType::bishop());
score -= material::Rook * whiteHand.get(PieceType::rook ());
Bitboard occ = nosseOr(position.getBOccupiedBitboard(),
position.getWOccupiedBitboard());
occ.unset(position.getBlackKingSquare());
occ.unset(position.getWhiteKingSquare());
BB_EACH(square, occ) {
auto piece = position.getPieceOnBoard(square);
if (piece.isBlack()) {
score += material::score(piece);
} else {
score -= material::score(piece);
}
}
Bitboard SEE::extractAttackers(const Position& position,
Square from,
Square to) {
Bitboard occ = nosseOr(position.getBOccupiedBitboard(),
position.getWOccupiedBitboard());
RotatedBitboard occ90 = position.get90RotatedBitboard();
RotatedBitboard occR45 = position.getRight45RotatedBitboard();
RotatedBitboard occL45 = position.getLeft45RotatedBitboard();
occ.unset(from);
occ90.unset(from.rotate90());
occR45.unset(from.rotateRight45());
occL45.unset(from.rotateLeft45());
Bitboard bb = Bitboard::zero();
bb |= (Bitboard::mask(to) << 1) & position.getBPawnBitboard();
bb |= (Bitboard::mask(to) >> 1) & position.getWPawnBitboard();
bb |= MoveTables::whiteLance(occ, to) & position.getBLanceBitboard();
bb |= MoveTables::blackLance(occ, to) & position.getWLanceBitboard();
bb |= MoveTables::whiteKnight(to) & position.getBKnightBitboard();
bb |= MoveTables::blackKnight(to) & position.getWKnightBitboard();
bb |= MoveTables::whiteSilver(to) & position.getBSilverBitboard();
bb |= MoveTables::blackSilver(to) & position.getWSilverBitboard();
bb |= MoveTables::whiteGold(to) & position.getBGoldBitboard();
bb |= MoveTables::blackGold(to) & position.getWGoldBitboard();
bb |= (MoveTables::ver(occ, to) |
MoveTables::hor(occ90, to)) &
(position.getBRookBitboard() |
position.getBDragonBitboard() |
position.getWRookBitboard() |
position.getWDragonBitboard());
bb |= (MoveTables::diagR45(occR45, to) |
MoveTables::diagL45(occL45, to)) &
(position.getBBishopBitboard() |
position.getBHorseBitboard() |
position.getWBishopBitboard() |
position.getWHorseBitboard());
bb |= MoveTables::king(to) &
(position.getBDragonBitboard() |
position.getWDragonBitboard()); // TODO: king
bb.unset(from);
return bb;
}