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https://github.com/sockspls/badfish
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94bb1964f6
Is a boolean option that when set allows Stockfish to select the best book move across the possible ones. Feature requested by Salvo Spitaleri. No functional change. Signed-off-by: Marco Costalba <mcostalba@gmail.com>
87 lines
2.1 KiB
C++
87 lines
2.1 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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/*
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The code in this file is based on the opening book code in PolyGlot
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by Fabien Letouzey. PolyGlot is available under the GNU General
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Public License, and can be downloaded from http://wbec-ridderkerk.nl
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*/
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#if !defined(BOOK_H_INCLUDED)
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#define BOOK_H_INCLUDED
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////
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//// Includes
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////
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#include <fstream>
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#include <string>
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#include "move.h"
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#include "position.h"
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////
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//// Types
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////
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struct BookEntry {
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uint64_t key;
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uint16_t move;
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uint16_t count;
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uint16_t n;
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uint16_t sum;
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};
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class Book : private std::ifstream {
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Book(const Book&); // just decleared..
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Book& operator=(const Book&); // ..to avoid a warning
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public:
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Book() {}
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~Book();
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void open(const std::string& fName);
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void close();
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const std::string file_name();
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Move get_move(const Position& pos, bool findBestMove);
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private:
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Book& operator>>(uint64_t& n) { n = read_integer(8); return *this; }
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Book& operator>>(uint16_t& n) { n = (uint16_t)read_integer(2); return *this; }
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void operator>>(BookEntry& e) { *this >> e.key >> e.move >> e.count >> e.n >> e.sum; }
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uint64_t read_integer(int size);
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void read_entry(BookEntry& e, int n);
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int find_key(uint64_t key);
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std::string fileName;
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int bookSize;
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};
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////
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//// Global variables
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////
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extern Book OpeningBook;
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#endif // !defined(BOOK_H_INCLUDED)
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