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https://github.com/sockspls/badfish
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a21a110188
It seems much worst in number of nodes seacrhed to reach the depth and anyhow does not give any advantage to the Onno's oroginal one. So revert by now and perhaps readd when we find something clearly better. Signed-off-by: Marco Costalba <mcostalba@gmail.com>
65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
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Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
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Stockfish 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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Stockfish 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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#if !defined MOVEPICK_H_INCLUDED
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#define MOVEPICK_H_INCLUDED
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#include "history.h"
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#include "move.h"
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#include "position.h"
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#include "types.h"
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struct SearchStack;
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/// MovePicker is a class which is used to pick one pseudo legal move at a time
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/// from the current position. It is initialized with a Position object and a few
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/// moves we have reason to believe are good. The most important method is
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/// MovePicker::get_next_move(), which returns a new pseudo legal move each time
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/// it is called, until there are no moves left, when MOVE_NONE is returned.
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/// In order to improve the efficiency of the alpha beta algorithm, MovePicker
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/// attempts to return the moves which are most likely to get a cut-off first.
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class MovePicker {
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MovePicker& operator=(const MovePicker&); // Silence a warning under MSVC
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public:
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MovePicker(const Position&, Move, Depth, const History&, SearchStack*, Value);
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MovePicker(const Position&, Move, Depth, const History&);
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MovePicker(const Position&, Move, const History&, int parentCapture);
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Move get_next_move();
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private:
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void score_captures();
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void score_noncaptures();
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void score_evasions();
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void go_next_phase();
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const Position& pos;
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const History& H;
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Depth depth;
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Move ttMove;
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MoveStack killers[2];
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int captureThreshold, phase;
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const uint8_t* phasePtr;
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MoveStack *curMove, *lastMove, *lastNonCapture, *badCaptures;
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MoveStack moves[MAX_MOVES];
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};
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#endif // !defined(MOVEPICK_H_INCLUDED)
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