/* * Quackle -- Crossword game artificial intelligence and analysis tool * Copyright (C) 2005-2019 Jason Katz-Brown, John O'Laughlin, and John Fultz. * * This program 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. * * This program 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 . */ #ifndef QUACKLE_EVALUATOR_H #define QUACKLE_EVALUATOR_H #include "alphabetparameters.h" namespace Quackle { class GamePosition; class Move; class Evaluator { public: virtual ~Evaluator() {}; // Default implementations of these return zero for everything but // equity, which returns the score of the move. // Return equity of move based on static evaluation // suitable for equity field of move. Rack must be alphabetized. virtual double equity(const GamePosition &position, const Move &move) const; virtual double playerConsideration(const GamePosition &position, const Move &move) const; virtual double sharedConsideration(const GamePosition &position, const Move &move) const; virtual double leaveValue(const LetterString &leave) const; }; class ScorePlusLeaveEvaluator : public Evaluator { public: virtual ~ScorePlusLeaveEvaluator() {}; // Evaluator that always returns a score+leave equity virtual double equity(const GamePosition &position, const Move &move) const; virtual double playerConsideration(const GamePosition &position, const Move &move) const; virtual double sharedConsideration(const GamePosition &position, const Move &move) const; virtual double leaveValue(const LetterString &leave) const; }; } #endif