cocos2d-x滾屏簡單實現

發布時間：2020-06-17 17:29:33 來源：網絡閱讀：689 作者：螞蟻雄心欄目：游戲開發

1、在圖層中加入兩個精靈

CCSprite *pSp1 = CCSprite::create("bg01.jpg");

CCSprite *pSp2 = CCSprite::create("bg01.jpg");

pSp1->setPosition(ccp(CCDirector::sharedDirector()->getWinSize().width/2,CCDirector::sharedDirector()->getWinSize().height/2));

pSp2->setPosition(ccp(CCDirector::sharedDirector()->getWinSize().width/2,CCDirector::sharedDirector()->getWinSize().height/2+576));//背景圖片高為576

this->addChild(pSp1,0,11);

this->addChild(pSp2,0,12);

2、啟動滾屏定時器

this->schedule(schedule_selector(GamingLayer::BackgroundScrollLogic),0.1f);

3、滾屏回調函數實現

void GamingLayer::BackgroundScrollLogic(float t)

{

CCSprite *pBg1 = (CCSprite *)getChildByTag(11);

CCSprite *pBg2 = (CCSprite *)getChildByTag(12);

pBg1->setPositionY(pBg1->getPositionY() - 10);//每次移動10個像素

pBg2->setPositionY(pBg1->getPositionY() + 576);//精靈2跟著移動

//如果第二張圖片滾動至末尾，重置精靈1的為原始位置

if(pBg2->getPositionY() <= CCDirector::sharedDirector()->getWinSize().height/2)

{

pBg1->setPositionY(CCDirector::sharedDirector()->getWinSize().height/2);

}

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