Evaluation::value() 直接调用 pos 的成员变量改为调用函数
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@ -46,16 +46,17 @@ class Evaluation
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{
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public:
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Evaluation() = delete;
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explicit Evaluation(const Position &p) : pos(p)
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explicit Evaluation(Position &p) : pos(p)
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{
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}
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Evaluation &operator=(const Evaluation &) = delete;
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Value value();
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private:
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const Position &pos;
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Position &pos;
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};
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// Evaluation::value() is the main function of the class. It computes the various
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// parts of the evaluation and returns the value of the position from the point
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// of view of the side to move.
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@ -68,25 +69,25 @@ Value Evaluation::value()
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int nPiecesOnBoardDiff;
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int pieceCountNeedRemove;
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switch (pos.phase) {
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switch (pos.get_phase()) {
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case PHASE_READY:
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break;
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case PHASE_PLACING:
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nPiecesInHandDiff = pos.pieceCountInHand[BLACK] - pos.pieceCountInHand[WHITE];
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nPiecesInHandDiff = pos.pieces_count_in_hand(BLACK) - pos.pieces_count_in_hand(WHITE);
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value += nPiecesInHandDiff * VALUE_EACH_PIECE_INHAND;
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nPiecesOnBoardDiff = pos.pieceCountOnBoard[BLACK] - pos.pieceCountOnBoard[WHITE];
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nPiecesOnBoardDiff = pos.pieces_count_on_board(BLACK) - pos.pieces_count_on_board(WHITE);
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value += nPiecesOnBoardDiff * VALUE_EACH_PIECE_ONBOARD;
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switch (pos.action) {
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switch (pos.get_action()) {
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case ACTION_SELECT:
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case ACTION_PLACE:
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break;
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case ACTION_REMOVE:
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pieceCountNeedRemove = (pos.sideToMove == BLACK) ?
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pos.pieceCountNeedRemove : -(pos.pieceCountNeedRemove);
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pieceCountNeedRemove = (pos.side_to_move() == BLACK) ?
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pos.piece_count_need_remove() : -(pos.piece_count_need_remove());
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value += pieceCountNeedRemove * VALUE_EACH_PIECE_PLACING_NEEDREMOVE;
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break;
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default:
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@ -96,21 +97,21 @@ Value Evaluation::value()
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break;
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case PHASE_MOVING:
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value = pos.pieceCountOnBoard[BLACK] * VALUE_EACH_PIECE_ONBOARD -
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pos.pieceCountOnBoard[WHITE] * VALUE_EACH_PIECE_ONBOARD;
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value = pos.pieces_count_on_board(BLACK) * VALUE_EACH_PIECE_ONBOARD -
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pos.pieces_count_on_board(WHITE) * VALUE_EACH_PIECE_ONBOARD;
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#ifdef EVALUATE_MOBILITY
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value += pos.get_mobility_diff(position->turn, position->pieceCountInHand[BLACK], position->pieceCountInHand[WHITE], false) * 10;
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#endif /* EVALUATE_MOBILITY */
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switch (pos.action) {
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switch (pos.get_action()) {
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case ACTION_SELECT:
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case ACTION_PLACE:
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break;
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case ACTION_REMOVE:
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pieceCountNeedRemove = (pos.sideToMove == BLACK) ?
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pos.pieceCountNeedRemove : -(pos.pieceCountNeedRemove);
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pieceCountNeedRemove = (pos.side_to_move() == BLACK) ?
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pos.piece_count_need_remove() : -(pos.piece_count_need_remove());
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value += pieceCountNeedRemove * VALUE_EACH_PIECE_MOVING_NEEDREMOVE;
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break;
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default:
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@ -120,23 +121,23 @@ Value Evaluation::value()
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break;
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case PHASE_GAMEOVER:
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if (pos.pieceCountOnBoard[BLACK] + pos.pieceCountOnBoard[WHITE] >=
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if (pos.pieces_count_on_board(BLACK) + pos.pieces_count_on_board(WHITE) >=
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RANK_NB * FILE_NB) {
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if (rule.isBlackLosebutNotDrawWhenBoardFull) {
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value -= VALUE_MATE;
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} else {
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value = VALUE_DRAW;
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}
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} else if (pos.action == ACTION_SELECT &&
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} else if (pos.get_action() == ACTION_SELECT &&
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pos.is_all_surrounded() &&
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rule.isLoseButNotChangeSideWhenNoWay) {
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Value delta = pos.sideToMove == BLACK ? -VALUE_MATE : VALUE_MATE;
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Value delta = pos.side_to_move() == BLACK ? -VALUE_MATE : VALUE_MATE;
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value += delta;
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}
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else if (pos.pieceCountOnBoard[BLACK] < rule.nPiecesAtLeast) {
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else if (pos.pieces_count_on_board(BLACK) < rule.nPiecesAtLeast) {
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value -= VALUE_MATE;
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} else if (pos.pieceCountOnBoard[WHITE] < rule.nPiecesAtLeast) {
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} else if (pos.pieces_count_on_board(WHITE) < rule.nPiecesAtLeast) {
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value += VALUE_MATE;
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}
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@ -146,7 +147,7 @@ Value Evaluation::value()
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break;
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}
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if (pos.sideToMove == WHITE) {
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if (pos.side_to_move() == WHITE) {
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value = -value;
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}
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@ -159,7 +160,7 @@ Value Evaluation::value()
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/// evaluate() is the evaluator for the outer world. It returns a static
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/// evaluation of the position from the point of view of the side to move.
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Value Eval::evaluate(const Position &pos)
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Value Eval::evaluate(Position &pos)
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{
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#ifdef ALPHABETA_AI
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return Evaluation(pos).value();
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@ -30,7 +30,7 @@ namespace Eval {
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std::string trace(const Position &pos);
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Value evaluate(const Position &pos);
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Value evaluate(Position &pos);
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};
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#endif // #ifndef EVALUATE_H_INCLUDED
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@ -161,9 +161,14 @@ public:
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static void print_board();
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int pieces_on_board_count();
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int pieces_on_board_count();
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int pieces_in_hand_count();
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int pieces_count_on_board(Color c);
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int pieces_count_in_hand(Color c);
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int piece_count_need_remove();
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static bool is_star_square(Square s);
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// private:
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@ -396,4 +401,19 @@ inline void Position::set_start_time(int stimeb)
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startTime = stimeb;
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}
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inline int Position::pieces_count_on_board(Color c)
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{
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return pieceCountOnBoard[c];
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}
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inline int Position::pieces_count_in_hand(Color c)
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{
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return pieceCountInHand[c];
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}
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inline int Position::piece_count_need_remove()
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{
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return pieceCountNeedRemove;
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}
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#endif // #ifndef POSITION_H_INCLUDED
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