void HelloWorld::jumpToGameOver(){

// //保存图片

Size visibleSize=Director::getInstance()->getWinSize();

// //定义一个屏幕大小的渲染纹理

RenderTexture* renderTexture = RenderTexture::create(visibleSize.width,visibleSize.height,Texture2D::PixelFormat::RGBA8888);

Scene* curScene = Director::getInstance()->getRunningScene();

// //渲染纹理开始捕捉

renderTexture->begin();

// //绘制当前场景

curScene->visit();

// //结束

renderTexture->end();

// //保存png

renderTexture->saveToFile("screenshoot.png",Image::Format::PNG);

//说Node正在工作，你打断他了，感觉来了加个pause,success！！

curScene->pause();

//跳转到GameOver

Director::getInstance()->replaceScene(GameOver::createScene());

}