/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008 Marco Costalba
+ 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
////
#include "position.h"
-#include "scale.h"
#include "value.h"
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
- KBPK, // KBP vs K
- KQKRP, // KQ vs KRP
+ KBPsK, // KB+pawns vs K
+ KQKRPs, // KQ vs KR+pawns
KRPKR, // KRP vs KR
KRPPKRP, // KRPP vs KRP
KPsK, // King and pawns vs king
template<typename T>
class EndgameFunctionBase {
public:
- EndgameFunctionBase(Color c) : strongerSide(c) { weakerSide = opposite_color(strongerSide); }
+ EndgameFunctionBase(Color c) : strongerSide(c), weakerSide(opposite_color(c)) {}
virtual ~EndgameFunctionBase() {}
- virtual T apply(const Position&) = 0;
+ virtual T apply(const Position&) const = 0;
+ Color color() const { return strongerSide; }
protected:
Color strongerSide, weakerSide;
template<EndgameType>
struct EvaluationFunction : public EndgameEvaluationFunctionBase {
+ typedef EndgameEvaluationFunctionBase Base;
explicit EvaluationFunction(Color c): EndgameEvaluationFunctionBase(c) {}
- Value apply(const Position&);
+ Value apply(const Position&) const;
};
template<EndgameType>
struct ScalingFunction : public EndgameScalingFunctionBase {
+ typedef EndgameScalingFunctionBase Base;
explicit ScalingFunction(Color c) : EndgameScalingFunctionBase(c) {}
- ScaleFactor apply(const Position&);
+ ScaleFactor apply(const Position&) const;
};
-////
-//// Constants and variables
-////
-
-extern EvaluationFunction<KXK> EvaluateKXK, EvaluateKKX; // Generic "mate lone king" eval
-extern EvaluationFunction<KBNK> EvaluateKBNK, EvaluateKKBN; // KBN vs K
-extern EvaluationFunction<KPK> EvaluateKPK, EvaluateKKP; // KP vs K
-extern EvaluationFunction<KRKP> EvaluateKRKP, EvaluateKPKR; // KR vs KP
-extern EvaluationFunction<KRKB> EvaluateKRKB, EvaluateKBKR; // KR vs KB
-extern EvaluationFunction<KRKN> EvaluateKRKN, EvaluateKNKR; // KR vs KN
-extern EvaluationFunction<KQKR> EvaluateKQKR, EvaluateKRKQ; // KQ vs KR
-extern EvaluationFunction<KBBKN> EvaluateKBBKN, EvaluateKNKBB; // KBB vs KN
-extern EvaluationFunction<KmmKm> EvaluateKmmKm; // K and two minors vs K and one or two minors:
-
-extern ScalingFunction<KBPK> ScaleKBPK, ScaleKKBP; // KBP vs K
-extern ScalingFunction<KQKRP> ScaleKQKRP, ScaleKRPKQ; // KQ vs KRP
-extern ScalingFunction<KRPKR> ScaleKRPKR, ScaleKRKRP; // KRP vs KR
-extern ScalingFunction<KRPPKRP> ScaleKRPPKRP, ScaleKRPKRPP; // KRPP vs KRP
-extern ScalingFunction<KPsK> ScaleKPsK, ScaleKKPs; // King and pawns vs king
-extern ScalingFunction<KBPKB> ScaleKBPKB, ScaleKBKBP; // KBP vs KB
-extern ScalingFunction<KBPPKB> ScaleKBPPKB, ScaleKBKBPP; // KBPP vs KB
-extern ScalingFunction<KBPKN> ScaleKBPKN, ScaleKNKBP; // KBP vs KN
-extern ScalingFunction<KNPK> ScaleKNPK, ScaleKKNP; // KNP vs K
-extern ScalingFunction<KPKP> ScaleKPKPw, ScaleKPKPb; // KP vs KP
-
////
//// Prototypes
////
extern void init_bitbases();
-
#endif // !defined(ENDGAME_H_INCLUDED)