/** This is the Driver file for the Tic Tac Toe game.  Let's play!
 *  (but this program contains a little mistake somewhere - can you find it?)
 *  By the way, when the user enters row & column numbers, let's assume
 *  they are separated by a space, not by punctuation (as in a comma).
 */
import java.util.Scanner;

public class Driver
{
  public static void main (String [] args)
  {
    Scanner kbd = new Scanner(System.in);

    char player = 'X';
    TicTacToe game = new TicTacToe();

    // The logic of the game is contained in this loop.  The loop continues
    // until the game is over (winner or tie).
    while (true)
    {
      // Show board and ask where the player wants to place a token.
      System.out.printf("%s\n", game);
      System.out.printf("Okay, player %c, it's your turn.\n", player);

      // need a little loop to make sure input is valid
      boolean validInput = false;
      while(! validInput)
      {
        System.out.printf ("enter row & column numbers (in range 1-3):  ");
        int row = kbd.nextInt();
        int col = kbd.nextInt();

        // place the token
        validInput = game.set(row, col, player);
      }

      // see if somebody won -- the findWinner() function will return either
      // T (for tie), or ' ' (for no winner yet), or X or O.
      char result = game.findWinner();
      System.out.printf("win check says '%c'\n", result);
      if (result == 'T')
      {
        System.out.printf("%s\n", game);
        System.out.printf("Cat's game.\n");
        break;
      }
      else if (result != ' ')
      {
        System.out.printf("%s\n", game);
        System.out.printf("Congratulations -- %c is the winner!", player);
        break;
      }

      // otherwise we keep going -- players take turns
      if (player == 'X')
        player = 'O';
      else
        player = 'X';
    }
  }
}