public void actionPerformed(ActionEvent event) {
    // Expecting menu items
    if (event.getSource() == fileNew) {
      newGame();
    }
    else if (event.getSource() == fileSave) {
      save();
    }
    else if (event.getSource() == fileExit) {
      exit();
    }
    else if (event.getSource() == settingsPlayBackgroundNoises) {
      toggleBackgroundNoises();
    }
    else if (event.getSource() == helpRules) {
      helpRules();
    }
    else if (event.getSource() == helpStrategy) {
      helpStrategy();
    }
    else if (event.getSource() == helpAbout) {
      helpAbout();
    }
  }