cocos2d-x 单选按钮菜单

今天做个贪吃蛇的游戏，里面需要用到单选按钮选择速度，但从网上找了找，没有找到cocos2d－x的实现方法，但是有cocos2d-iphone的实现方法，由于本人之前学过ios的基本开发，有OC语言有些了解，而且也学过C＋＋，所以就将cocos2d－iphone的实现方法重写了一遍，在此分享给大家：coco2d-iphone实现包，cocos2d-x实现包.

使用方法：

    CCMenuItemImage *bu01 = CCMenuItemImage::create("veryfast.png", "veryfastsel.png", this, menu_selector(GameSetting::button1CallBack));
    CCMenuItemImage *bu02 = CCMenuItemImage::create("faster.png", "fastersel.png", this, menu_selector(GameSetting::button2CallBack));
    CCMenuItemImage *bu03 = CCMenuItemImage::create("middle.png", "middlesel.png", this, menu_selector(GameSetting::button3CallBack));
    CCMenuItemImage *bu04 = CCMenuItemImage::create("slow.png", "slowsel.png", this, menu_selector(GameSetting::button4CallBack));
    CCRadioMenu *radioMenu = CCRadioMenu::create(bu01,bu02,bu03,bu04,NULL);
    radioMenu->setPosition(ccp(480.0, 500.5));//480.0, 590.0
    radioMenu->alignItemsHorizontally();
    radioMenu->setSelectedItem_(bu01);
    bu01->selected();
    this->addChild(radioMenu, 1);