108 lines
2.4 KiB
C++
108 lines
2.4 KiB
C++
/*
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This file is part of Sanmill.
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Copyright (C) 2019-2021 The Sanmill developers (see AUTHORS file)
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Sanmill is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Sanmill is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MOVEGEN_H_INCLUDED
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#define MOVEGEN_H_INCLUDED
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#include <algorithm>
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#include <array>
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#include "types.h"
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class Position;
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enum GenType
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{
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PLACE,
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MOVE,
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REMOVE,
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LEGAL
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};
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struct ExtMove
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{
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Move move;
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int value;
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operator Move() const noexcept
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{
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return move;
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}
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void operator=(Move m) noexcept
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{
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move = m;
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}
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// Inhibit unwanted implicit conversions to Move
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// with an ambiguity that yields to a compile error.
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operator float() const = delete;
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};
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inline bool operator<(const ExtMove &f, const ExtMove &s) noexcept
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{
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return f.value < s.value;
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}
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template<GenType>
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ExtMove *generate(Position &pos, ExtMove *moveList);
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/// The MoveList struct is a simple wrapper around generate(). It sometimes comes
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/// in handy to use this class instead of the low level generate() function.
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template<GenType T>
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struct MoveList
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{
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explicit MoveList(Position &pos) : last(generate<T>(pos, moveList))
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{
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}
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const ExtMove *begin() const
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{
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return moveList;
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}
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const ExtMove *end() const
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{
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return last;
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}
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size_t size() const
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{
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return last - moveList;
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}
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bool contains(Move move) const
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{
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return std::find(begin(), end(), move) != end();
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}
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static void create();
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static void shuffle();
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inline static std::array<Square, EFFECTIVE_SQUARE_NB> movePriorityList {SQ_NONE};
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inline static Square adjacentSquares[SQUARE_NB][MD_NB] = { {SQ_NONE} };
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inline static Bitboard adjacentSquaresBB[SQUARE_NB] = { 0 };
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private:
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ExtMove moveList[MAX_MOVES] { {MOVE_NONE, 0} };
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ExtMove *last {nullptr};
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};
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#endif // #ifndef MOVEGEN_H_INCLUDED
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