gistfile1.c

#include	<stdlib.h>
#include	<unistd.h>

enum	casem
  {
    EMPTY,
    ROND,
    CROIX
  };

void	print_char(char c)
{
  write(STDOUT_FILENO, &c, sizeof(c));
}

void	print_string(char * str)
{
  int	i;

  i = 0;
  while (str[i] != '\0')
    {
      print_char(str[i]);
      i++;
    }
}

void   print_alphabet(void)
{
  char	letter;

  letter = 'z';
  while (letter >= 'a')
    {
      print_char(letter);
      letter = letter - 1;
    }
  print_char('\n');
}

void	init_grille(enum casem * grille)
{
  int	compteur;

  compteur = 0;
  while (compteur < 9)
    {
      grille[compteur] = EMPTY;
      compteur = compteur + 1;
    }
}

void	print_case(enum casem cas)
{
  if (cas == EMPTY)
    print_char(' ');
  else if (cas == ROND)
    print_char('O');
  else
    print_char('X');
}

void	show_grille(enum casem * grille)
{
  int	compteur;

  compteur = 0;
  while (compteur < 9)
    {
      print_case(grille[compteur]);
      if (compteur == 2 || compteur == 5 || compteur == 8)
	print_char('\n');
      else
	print_char('|');
      compteur = compteur + 1;
    }  
}

void	print_player(int player)
{
  print_string("Player ");
  if (player == 1)
    print_case(ROND);
  if (player == 2)
    print_case(CROIX);
}

int	check_answer(char answer, enum casem * grille)
{
  if (answer >= '1' && answer <= '9' && grille[answer - '0' - 1] == EMPTY)
    return (0);
  return (1);
}

void	update_grille(enum casem * grille, int player, char answer)
{
  if (player == 1)
    grille[answer - '0' - 1] = ROND;
  else
    grille[answer - '0' - 1] = CROIX;
}

void	next_move(int player, enum casem * grille)
{
  char	answer[2];

  *answer = 0;
  while (check_answer(*answer, grille) == 1)
    {
      print_player(player);
      print_string(" : Ou veux-tu mettre ton pion ? ");
      read(STDIN_FILENO, answer, 2);
    }
  update_grille(grille, player, *answer);
}

int	next_player(int player)
{
  if (player == 1)
    return (2);
  return (1);
}

void	morpion(void)
{
  enum casem	grille[9];
  int	player;

  init_grille(grille);
  player = 1;
  while (1)
    {
      show_grille(grille);
      next_move(player, grille);
      player = next_player(player);
    }
}

int	main(void)
{
  morpion();
  return (EXIT_SUCCESS);
}