@Override
        public void actionPerformed(ActionEvent e) {
          SoundPlayer.getSoundPlayer().play(SoundPlayer.Track.BUTTON);
          // WHEN the back button recieves an actionEvent
          if (e.getActionCommand().equals("back")) {
            // IF Player one's character is set
            if (player2 != null) {
              // REMOVE Player one's selected character
              System.out.println("REMOVE Player 2");
              player2 = null;
              fightButton.setEnabled(false);
              choosingPlayer.setSelected(true);
              // SET Player one to the player whose currently picking
            } // ELSE IF Player two's character is set
            else if (player1 != null) {
              // REMOVE Player two's selected character
              System.out.println("REMOVE Player 1");
              choosingPlayer.setSelected(false);
              player1 = null;
            } // ELSE
            else {
              // Show ModeScreen
              System.out.println("GO BACK TO MODE");
              backActionPerformed();
            }

          } // ELSE fight button pressed
          else {
            // CALL startGame
            startGame(ai, tournamentMode, player1, player2);
            // System.out.println("FIGHT");

          }
        }
 private void backActionPerformed() {
   SoundPlayer.getSoundPlayer().play(SoundPlayer.Track.BUTTON);
   // IF 1 player game
   if (ai) {
     ((MainScreen) SwingUtilities.getRoot(this)).changeScreen("ModeScreen1");
   }
   // ELSE 2 player game
   else {
     ((MainScreen) SwingUtilities.getRoot(this)).changeScreen("ModeScreen2");
   }
 }