#ifndef _TTT_H_
#define _TTT_H_

#define TRUE (1)
#define FALSE (0)

#define IN
#define OUT

typedef unsigned int BOOL;

//
// Constants for each state a board square can be in and a programmer
// defined type for these states.
//
#define X_MARK (-1)
#define EMPTY  (0)
#define O_MARK (+1)
#define TIE    (+2)

typedef signed char SQUARE;
#define IS_SQUARE_EMPTY(x) (x == EMPTY)

//
// A (simple) representation of a tic tac toe position
//
#define BOARD_SIZE (3)

typedef struct _POSITION
{
    SQUARE sWhoseTurn;
    SQUARE sBoard[BOARD_SIZE][BOARD_SIZE];
    unsigned int uNumEmpty;
} POSITION;

//
// A representation of a move in a tic tac toe game
//
typedef unsigned int COORD;

typedef struct _MOVE
{
    COORD cHpos;
    COORD cVpos;
    SQUARE sMark;
} MOVE;

#endif /* _TTT_H_ */