+++ /dev/null
-/*
- Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
-
- Stockfish is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- Stockfish is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#if !defined(ENDGAME_H_INCLUDED)
-#define ENDGAME_H_INCLUDED
-
-#include <map>
-#include <string>
-
-#include "position.h"
-#include "types.h"
-
-
-/// EndgameType lists all supported endgames
-
-enum EndgameType {
-
- // Evaluation functions
-
- KXK, // Generic "mate lone king" eval
- KBNK, // KBN vs K
- KPK, // KP vs K
- KRKP, // KR vs KP
- KRKB, // KR vs KB
- KRKN, // KR vs KN
- KQKR, // KQ vs KR
- KBBKN, // KBB vs KN
- KNNK, // KNN vs K
- KmmKm, // K and two minors vs K and one or two minors
-
-
- // Scaling functions
- SCALE_FUNS,
-
- KBPsK, // KB+pawns vs K
- KQKRPs, // KQ vs KR+pawns
- KRPKR, // KRP vs KR
- KRPPKRP, // KRPP vs KRP
- KPsK, // King and pawns vs king
- KBPKB, // KBP vs KB
- KBPPKB, // KBPP vs KB
- KBPKN, // KBP vs KN
- KNPK, // KNP vs K
- KPKP // KP vs KP
-};
-
-
-/// Some magic to detect family type of endgame from its enum value
-
-template<bool> struct bool_to_type { typedef Value type; };
-template<> struct bool_to_type<true> { typedef ScaleFactor type; };
-template<EndgameType E> struct eg_family : public bool_to_type<(E > SCALE_FUNS)> {};
-
-
-/// Base and derived templates for endgame evaluation and scaling functions
-
-template<typename T>
-struct EndgameBase {
-
- virtual ~EndgameBase() {}
- virtual Color color() const = 0;
- virtual T operator()(const Position&) const = 0;
-};
-
-
-template<EndgameType E, typename T = typename eg_family<E>::type>
-struct Endgame : public EndgameBase<T> {
-
- explicit Endgame(Color c) : strongerSide(c), weakerSide(flip(c)) {}
- Color color() const { return strongerSide; }
- T operator()(const Position&) const;
-
-private:
- Color strongerSide, weakerSide;
-};
-
-
-/// Endgames class stores in two std::map the pointers to endgame evaluation
-/// and scaling base objects. Then we use polymorphism to invoke the actual
-/// endgame function calling its operator() method that is virtual.
-
-class Endgames {
-
- typedef std::map<Key, EndgameBase<Value>*> M1;
- typedef std::map<Key, EndgameBase<ScaleFactor>*> M2;
-
- M1 m1;
- M2 m2;
-
- M1& map(Value*) { return m1; }
- M2& map(ScaleFactor*) { return m2; }
-
- template<EndgameType E> void add(const std::string& code);
-
-public:
- Endgames();
- ~Endgames();
-
- template<typename T> EndgameBase<T>* get(Key key) {
- return map((T*)0).count(key) ? map((T*)0)[key] : NULL;
- }
-};
-
-#endif // !defined(ENDGAME_H_INCLUDED)