Tic Tac Toe

Modify the tic tac toe game at the bottom of the code to make sure that it works.

Follow these steps:

1. Finish calculating if someone won. You need to add ifs for Row 2, Row 3, Column 1, Column 2, Column 3 and the 2 Diagonals.

        //Calculate if someone won
        String winner = "__";
        if (b11.getText ().equals (b12.getText ()) && b11.getText ().equals (b13.getText ()) && !b11.getText ().equals ("__"))
        {
            JOptionPane.showMessageDialog (null, b11.getText () + " won!", "We have a winner!", JOptionPane.ERROR_MESSAGE);
            winner = b11.getText ();
        }

This checks if b11=b12=b13 and that b11 isn't a blank. That means that someone won because they have a row.

2. Make it so they can’t cheat. Fix up the other ifs at the beginning of actionPerformed so they look like this:

//Switch the button's label
   if (e.getActionCommand ().equals ("11") && b11.getText ().equals    ("__"))
   b11.setText (turn);

This makes it some they can only click on buttons that the other person hasn't clicked on.

3. Change the GUI so it looks better.

• None of these labels need to be declared globally!
• Make a title. Change the font.
• Change the background colour. Change the button's colour. Change the text's colour.
• Add a picture.
• Add some instructions at the top of the screen.

4. Keeping track of the score and the turn on the screen.

• Add two new labels. Declare them globally.
• In Init output the current score and the current person's turn, using the variables that track this.
• In ActionPerformed, at the very end, set the Text of the Labels to output the current score and turn, using the variables that track them.

The Code to start from:

import javax.swing.*;
   import java.applet.*;
   import java.awt.*;
   import java.awt.event.*;

public class TicTac extends Applet implements ActionListener
   {
   String turn = "X";
   JButton b11, b12, b13, b21, b22, b23, b31, b32, b33;
   int xWins = 0;
   int oWins = 0;

 public void init ()
   {
   Panel p = new Panel (new GridLayout (3, 3));
   b11 = new JButton ("__");
   b11.setActionCommand ("11");
   b11.addActionListener (this);
   p.add (b11);

 b12 = new JButton ("__");
   b12.setActionCommand ("12");
   b12.addActionListener (this);
   p.add (b12);

 b13 = new JButton ("__");
   b13.setActionCommand ("13");
   b13.addActionListener (this);
   p.add (b13);

 b21 = new JButton ("__");
   b21.setActionCommand ("21");
   b21.addActionListener (this);
   p.add (b21);

 b22 = new JButton ("__");
   b22.setActionCommand ("22");
   b22.addActionListener (this);
   p.add (b22);

 b23 = new JButton ("__");
   b23.setActionCommand ("23");
   b23.addActionListener (this);
   p.add (b23);

 b31 = new JButton ("__");
   b31.setActionCommand ("31");
   b31.addActionListener (this);
   p.add (b31);

 b32 = new JButton ("__");
   b32.setActionCommand ("32");
   b32.addActionListener (this);
   p.add (b32);

 b33 = new JButton ("__");
   b33.setActionCommand ("33");
   b33.addActionListener (this);
   p.add (b33);
   add (p);
   }

   public void actionPerformed (ActionEvent e)
   { //Switch the button's label
   if (e.getActionCommand ().equals ("11") && b11.getText ().equals    ("__"))
   b11.setText (turn);
   else if (e.getActionCommand ().equals ("12"))
   b12.setText (turn);
   else if (e.getActionCommand ().equals ("13"))
   b13.setText (turn);
   else if (e.getActionCommand ().equals ("21"))
   b21.setText (turn);
   else if (e.getActionCommand ().equals ("22"))
   b22.setText (turn);
   else if (e.getActionCommand ().equals ("23"))
   b23.setText (turn);
   else if (e.getActionCommand ().equals ("31"))
   b31.setText (turn);
   else if (e.getActionCommand ().equals ("32"))
   b32.setText (turn);
   else if (e.getActionCommand ().equals ("33"))
   b33.setText (turn);

   //Calculate if someone won
   String winner = "__";
   if (b11.getText ().equals (b12.getText ()) && b11.getText ().equals    (b13.getText ()) && !b11.getText ().equals ("__"))
   {
   JOptionPane.showMessageDialog (null, b11.getText () + " won!", "We    have a winner!", JOptionPane.ERROR_MESSAGE);
   winner = b11.getText ();
   }

 //If someone won, reset and display new score
   if (!winner.equals ("__"))
   {
   b11.setText ("__");
   b12.setText ("__");
   b13.setText ("__");
   b21.setText ("__");
   b22.setText ("__");
   b23.setText ("__");
   b31.setText ("__");
   b32.setText ("__");
   b33.setText ("__");
   if (winner.equals ("X"))
   xWins++;
   else
   oWins++;
   showStatus ("X's points: " + xWins + " O's points: " + oWins);

 }

 //Switch whose turn it was
   if (turn.equals ("X"))
   turn = "O";
   else
   turn = "X";
   }
   }