////////////////////////////////////////////////////////
//
//	TTTBoard.h
//
//	Written by Jeff Ondich on 1/14/98
//      Modified by Dave Musicant on 9/20/02
//
//	This is the interface for the class TTTBoard.
//	TTTBoard objects store the current state of
//	a game of Tic-Tac-Toe, and provide operations for
//	manipulating the game.
//
////////////////////////////////////////////////////////

#ifndef	TTTBOARD_H
#define	TTTBOARD_H

const char playerX = 'X';
const char playerO = 'O';
const char noPlayer = ' ';

class TTTBoard
{
private:
	char board[3][3];
	char whoseTurn;

public:
	// Constructor
	TTTBoard();

	// Getting information about data members
	bool isOpen(int row, int col) const;
	char whoIsThere(int row, int col) const;
	char whoseTurn() const;
	char winningPlayer() const;
	
	// Making moves
	bool makeMove(char thePlayer, int row, int col);

	// Displaying the state of the game
	void drawBoard();
};

////////////////////////////////////////////////////////
//
//	Descriptions of the member functions
//
////////////////////////////////////////////////////////

// The constructor TTTBoard() initializes the board
// to empty--neither X nor O has moved--and sets
// whoseTurn to playerX.

// isOpen() returns false if theSquare is
// occupied by an X or an O, and true otherwise.

// whoIsThere() returns playerX, playerO, or noPlayer,
// depending on what is in theSquare.

// whoseTurn() returns playerX or playerO, depending on
// whose turn it is.  As indicated in the description of
// the constructor, X always goes first.

// winningPlayer() returns playerX, playerO, or noPlayer,
// depending on if any player has three in a row. If two players
// both have three in a row (which should be impossible),
// winningPlayer() returns noPlayer. If a single player has
// more than one three in a row at a time and the other
// player does not have three in a row, winningPlayer()
// returns that player with multiple wins.

// If it is thePlayer's move and the square is open, makeMove()
// makes a move for thePlayer in the square and returns true.
// Otherwise, makeMove() returns false.

// drawBoard() prints some kind of representation of the
// Tic-Tac-Toe board to standard output (cout).  For
// example, the display might look like this:
//
//       |   |
//     X | O |
//       |   |
//    -----------
//       |   |
//     X |   |
//       |   |
//    -----------
//       |   |
//     O |   |
//       |   |
//
//    It is X's turn.
//

#endif