/** Adds Demo buttons on Main Menu for players who are playing Demo. */
  private void addDemoButtons(int par1, int par2) {
    buttonList.add(new GuiButton(11, width / 2 - 100, par1, I18n.func_135053_a("menu.playdemo")));
    buttonList.add(
        buttonResetDemo =
            new GuiButton(
                12, width / 2 - 100, par1 + par2 * 1, I18n.func_135053_a("menu.resetdemo")));
    ISaveFormat isaveformat = mc.getSaveLoader();
    WorldInfo worldinfo = isaveformat.getWorldInfo("Demo_World");

    if (worldinfo == null) {
      buttonResetDemo.enabled = false;
    }
  }
  /**
   * Fired when a control is clicked. This is the equivalent of
   * ActionListener.actionPerformed(ActionEvent e).
   */
  protected void actionPerformed(GuiButton par1GuiButton) {
    if (par1GuiButton.id == 0) {
      mc.displayGuiScreen(new GuiOptions(this, mc.gameSettings));
    }

    if (par1GuiButton.id == 5) {
      mc.displayGuiScreen(new GuiLanguage(this, mc.gameSettings, mc.func_135016_M()));
    }

    if (par1GuiButton.id == 1) {
      mc.displayGuiScreen(new GuiSelectWorld(this));
    }

    if (par1GuiButton.id == 2) {
      mc.displayGuiScreen(new GuiMultiplayer(this));
    }

    if (par1GuiButton.id == 14 && field_130023_H.drawButton) {
      func_140005_i();
    }

    if (par1GuiButton.id == 4) {
      mc.shutdown();
    }

    if (par1GuiButton.id == 10) {
      mc.displayGuiScreen(new GuiScreenTemporaryResourcePackSelect(this, mc.gameSettings));
    }

    if (par1GuiButton.id == 11) {
      mc.enableSP = mc.useSP;
      if (mc.enableSP) {
        mc.playerController = new PlayerControllerDemo(mc);
        mc.startWorldSSP("Demo_World", "Demo_World", DemoWorldServer.demoWorldSettings);
        mc.displayGuiScreen(null);
      } else {
        mc.launchIntegratedServer("Demo_World", "Demo_World", DemoWorldServer.demoWorldSettings);
      }
    }

    if (par1GuiButton.id == 12) {
      ISaveFormat isaveformat = mc.getSaveLoader();
      WorldInfo worldinfo = isaveformat.getWorldInfo("Demo_World");

      if (worldinfo != null) {
        GuiYesNo guiyesno = GuiSelectWorld.getDeleteWorldScreen(this, worldinfo.getWorldName(), 12);
        mc.displayGuiScreen(guiyesno);
      }
    }
  }
  public void confirmClicked(boolean par1, int par2) {
    if (par1 && par2 == 12) {
      ISaveFormat isaveformat = mc.getSaveLoader();
      isaveformat.flushCache();
      isaveformat.deleteWorldDirectory("Demo_World");
      mc.displayGuiScreen(this);
    } else if (par2 == 13) {
      if (par1) {
        try {
          Class class1 = Class.forName("java.awt.Desktop");
          Object obj = class1.getMethod("getDesktop", new Class[0]).invoke(null, new Object[0]);
          class1
              .getMethod("browse", new Class[] {java.net.URI.class})
              .invoke(obj, new Object[] {new URI(field_104024_v)});
        } catch (Throwable throwable) {
          throwable.printStackTrace();
        }
      }

      mc.displayGuiScreen(this);
    }
  }