eliot/game/freegame.h
Olivier Teulière 7f60f532ad FreeGame: fix an infinite game when all the players keep passing forever.
Now the game ends when all the players passed in the last 3 turns.
2015-02-24 23:28:31 +01:00

116 lines
3.6 KiB
C++

/*****************************************************************************
* Eliot
* Copyright (C) 2005-2012 Olivier Teulière
* Authors: Olivier Teulière <ipkiss @@ gmail.com>
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*****************************************************************************/
#ifndef FREEGAME_H_
#define FREEGAME_H_
#include "game.h"
#include "logging.h"
class Player;
using std::string;
using std::wstring;
using std::vector;
/**
* This class handles the logic specific to a "free" game.
*
* The algorithm is simple: players play at their turn, and they can either
* play a word or change letters (changing letters implies passing its turn).
*
* When a player has no more letters (end of the game), the points of the
* letters left in the racks of his opponents are added to his score, and
* removed from the score of the latters.
*/
class FreeGame: public Game
{
DEFINE_LOGGER();
friend class GameFactory;
public:
/*************************
* Game handling
*************************/
/**
* Start the game.
*/
virtual void start();
virtual bool isFinished() const;
/**
* See description of Game::play() for the possible return values.
* Note that if the "freegame-reject-invalid" setting is set to false
* the method always returns 0 (the player will have 0 for this turn)
*/
virtual int play(const wstring &iCoord, const wstring &iWord);
/**
* Pass the turn, changing the letters listed in iToChange.
* If you simply want to pass the turn without changing any letter,
* provide an empty string.
*
* Possible return values:
* 0: everything went fine
* 1: changing letters is not allowed if there are less than 7 tiles
* left in the bag
* 2: the rack of the current player does not contain all the
* listed letters
* 3: the game is already finished
* 4: some letters are invalid for the current dictionary
*/
int pass(const wstring &iToChange);
private:
/// True if the game is finished, false otherwise
bool m_finished;
/// Private constructor to force using the GameFactory class
FreeGame(const GameParams &iParams, const Game *iMasterGame);
/// Make the AI player whose ID is p play its turn
void playAI(unsigned int p);
/// Record a player move
void recordPlayerMove(const Move &iMove, Player &ioPlayer);
/// Finish the current turn
int endTurn();
/**
* Finish the game.
* @param The winning player is given, use an invalid player number to
* indicate that there was no winner (e.g.: all players pass several times)
*/
void endGame(unsigned iWinningPlayer);
/**
* Check whether it is legal to change the letters of iToChange.
* The return codes are the same as the ones on the pass() method
*/
int checkPass(const Player &iPlayer, const wstring &iToChange) const;
bool allPlayersPassedThreeTimesInARow() const;
};
#endif /* _FREEGAME_H_ */