/*
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
+ Copyright (C) 2008-2012 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 "tt.h"
#include "types.h"
-const int MaterialTableSize = 1024;
+const int MaterialTableSize = 8192;
+
+/// Game phase
+enum Phase {
+ PHASE_ENDGAME = 0,
+ PHASE_MIDGAME = 128
+};
+
/// MaterialInfo is a class which contains various information about a
/// material configuration. It contains a material balance evaluation,
Key key;
int16_t value;
uint8_t factor[2];
- EndgameEvaluationFunctionBase* evaluationFunction;
- EndgameScalingFunctionBase* scalingFunction[2];
+ EndgameBase<Value>* evaluationFunction;
+ EndgameBase<ScaleFactor>* scalingFunction[2];
int spaceWeight;
Phase gamePhase;
};
/// The MaterialInfoTable class represents a pawn hash table. The most important
-/// method is get_material_info, which returns a pointer to a MaterialInfo object.
-class EndgameFunctions;
+/// method is material_info(), which returns a pointer to a MaterialInfo object.
class MaterialInfoTable : public SimpleHash<MaterialInfo, MaterialTableSize> {
public:
- MaterialInfoTable();
~MaterialInfoTable();
- MaterialInfo* get_material_info(const Position& pos);
+ void init();
+ MaterialInfo* material_info(const Position& pos) const;
static Phase game_phase(const Position& pos);
private:
- EndgameFunctions* funcs;
+ template<Color Us>
+ static int imbalance(const int pieceCount[][8]);
+
+ Endgames* funcs;
};
if (!scalingFunction[c])
return ScaleFactor(factor[c]);
- ScaleFactor sf = scalingFunction[c]->apply(pos);
+ ScaleFactor sf = (*scalingFunction[c])(pos);
return sf == SCALE_FACTOR_NONE ? ScaleFactor(factor[c]) : sf;
}
+inline Value MaterialInfo::evaluate(const Position& pos) const {
+ return (*evaluationFunction)(pos);
+}
+
inline Score MaterialInfo::material_value() const {
return make_score(value, value);
}
return evaluationFunction != NULL;
}
-inline Value MaterialInfo::evaluate(const Position& pos) const {
- return evaluationFunction->apply(pos);
-}
-
#endif // !defined(MATERIAL_H_INCLUDED)