/*	TTTGame.h
 *
 *
 *  	Written February, 2004 by Pat Troy for CS 422
 */

#include <iostream>

enum GameStatus { POSITIONINUSE=-2, INVALIDMOVE = -1, VALIDMOVE = 0,
                  WINGAME = 1, LOSEGAME = 2, CATSGAME = 3};

enum PlayerID { DEFAULTPLAYER, USERPLAYER, COMPUTERPLAYER };

enum POSORCOUNT {POS, COUNT};  

extern int posArray[8][3];
// 	{{1,2,3},    /* positions in the first row */
//	 {4,5,6},    /* positions in the second row */
//	 {7,8,9},    /* positions in the third row */
//	 {1,4,7},    /* positions in the first column */
//	 {2,5,8},    /* positions in the second column */
//	 {3,6,9},    /* positions in the third column */
//	 {1,5,9},    /* positions in the first diagonal */
//	 {3,5,7}};   /* positions in the second diagonal */

class TTTGame
{
 protected:

	/* The constructors will be protected to force the use
	   of the static createTTTGame method.				*/
	TTTGame();

	/* There is also a static pointer to TTTGame to keep 
	   track of the single instance of the class.			*/
	static TTTGame *game;

	/* The normal data members of the class 			*/
	char board[10];
 	int turn;
	int startingPlayer;
        int moveNumber;
	int numStarted;
	int numWon;
	int numLost;
	int numCats;	/* A "Cat's Game" is a game with no winner 	*/

 public:

	/* These static methods will create and/or return the instance
	   of the game maintained in the static pointer			*/
	static TTTGame *createTTTGame ( void );
	static TTTGame *getGame ( void );

	/* Here are the normal methods of the class			*/
	int newGame (int startPlayer = 0);
	char getPosition ( int pos );
	int userMove (char move);
	int computerMove ( void );
	int getTurn ( void );
	int getNumStarted ( void );
	int getNumWon ( void );
	int getNumLost ( void );
	int getNumCats ( void );
	int findWinningMove (char, int);
        int determineComputerMove ();

	int isGameWon ();  /* return -1 when there is no winner or the
			      first dimension of the posArray which
			      indicates the winning 3 positions */

};