- Score material_value() const { return make_score(value, value); }
- int space_weight() const { return spaceWeight; }
- Phase game_phase() const { return gamePhase; }
- bool specialized_eval_exists() const { return evaluationFunction != NULL; }
- Value evaluate(const Position& p) const { return (*evaluationFunction)(p); }
- ScaleFactor scale_factor(const Position& pos, Color c) const;
+ Score imbalance() const { return score; }
+ Phase game_phase() const { return (Phase)gamePhase; }
+ bool specialized_eval_exists() const { return evaluationFunction != nullptr; }
+ Value evaluate(const Position& pos) const { return (*evaluationFunction)(pos); }
+
+ // scale_factor() takes a position and a color as input and returns a scale factor
+ // for the given color. We have to provide the position in addition to the color
+ // because the scale factor may also be a function which should be applied to
+ // the position. For instance, in KBP vs K endgames, the scaling function looks
+ // for rook pawns and wrong-colored bishops.
+ ScaleFactor scale_factor(const Position& pos, Color c) const {
+ ScaleFactor sf = scalingFunction[c] ? (*scalingFunction[c])(pos)
+ : SCALE_FACTOR_NONE;
+ return sf != SCALE_FACTOR_NONE ? sf : ScaleFactor(factor[c]);
+ }