// Evaluation functions
+ KNNK, // KNN vs K
KXK, // Generic "mate lone king" eval
KBNK, // KBN vs K
KPK, // KP vs K
KQKP, // KQ vs KP
KQKR, // KQ vs KR
KBBKN, // KBB vs KN
- KNNK, // KNN vs K
KmmKm, // K and two minors vs K and one or two minors
KBPsK, // KB+pawns vs K
KQKRPs, // KQ vs KR+pawns
KRPKR, // KRP vs KR
+ KRPKB, // KRP vs KB
KRPPKRP, // KRPP vs KRP
KPsK, // King and pawns vs king
KBPKB, // KBP vs KB
};
-/// Endgame functions can be of two types according if return a Value or a
-/// ScaleFactor. Type eg_fun<int>::type equals to either ScaleFactor or Value
-/// depending if the template parameter is 0 or 1.
+/// Endgame functions can be of two types depending on whether they return a
+/// Value or a ScaleFactor. Type eg_fun<int>::type returns either ScaleFactor
+/// or Value depending on whether the template parameter is 0 or 1.
template<int> struct eg_fun { typedef Value type; };
template<> struct eg_fun<1> { typedef ScaleFactor type; };
template<EndgameType E, typename T = typename eg_fun<(E > SCALE_FUNS)>::type>
struct Endgame : public EndgameBase<T> {
- explicit Endgame(Color c) : strongerSide(c), weakerSide(~c) {}
- Color color() const { return strongerSide; }
+ explicit Endgame(Color c) : strongSide(c), weakSide(~c) {}
+ Color color() const { return strongSide; }
T operator()(const Position&) const;
private:
- Color strongerSide, weakerSide;
+ const Color strongSide, weakSide;
};
-/// 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() that is virtual.
+/// The Endgames class stores the pointers to endgame evaluation and scaling
+/// base objects in two std::map typedefs. We then use polymorphism to invoke
+/// the actual endgame function by calling its virtual operator().
class Endgames {