cocos2d-x利用CCClippingNode实现滚动字幕

来源：互联网发布：淘宝店铺倒计时代码编辑：程序博客网时间：2024/06/05 18:14

直接上代码，这是封装好了的layer，可以直接调用 //白白原创

bool TestLayer::init(){    CCSize size = CCDirector::sharedDirector()->getVisibleSize();      //创建要显示的文字    text = CCLabelTTF::create("text\nbaibai\nfdffdd\nzimu\nhaha\njahjahjkd\njhahaj\n", "", 30);    text->setPosition(ccp(100, -120));    //绘制裁剪区域    CCDrawNode* shap = CCDrawNode::create();    CCPoint point[4] = {ccp(0,0), ccp(200, 0), ccp(200, 200), ccp(0, 200)};    shap->drawPolygon(point, 4, ccc4f(355, 255, 255, 255), 2, ccc4f(255, 255, 255, 255));    CCClippingNode* cliper = CCClippingNode::create();    cliper->setStencil(shap);    cliper->setAnchorPoint(ccp(.5, .5));    cliper->setPosition(ccp(100, 20));    addChild(cliper);//把要滚动的文字加入到裁剪区域    cliper->addChild(text);    //文字滚动，超出范围后从新开始    schedule(schedule_selector(CTestLayer::rollText));return true;}void TestLayer::rollText(float){    text->getPositionY()>300 ? text->setPositionY(-150) : text->setPositionY(text->getPositionY()+2);}

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