为了方便代码维护
所以统一给屏幕添加事件
判断点中哪个精灵需要 遍历每个精灵 判断是否与触摸 碰撞 碰撞就是触发哪个精灵处理
还有就是 单点触摸和多点触摸逻辑一定更要分离
就是1个手指第一次点击 算单点(2个手机送开1个手指就不能算进去 不然逻辑会乱) 所以这个地方要写判断是否全部松开的点击 为单点
bool HelloWorld::ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent) { int tag ; for (tag = 1;tag<=TagCount;tag++) { CCSprite* sprite= (CCSprite*)this->getChildByTag(tag); CCPoint touchPoint = pTouch->getLocationInView(); touchPoint = CCDirector::sharedDirector()->convertToGL( touchPoint ); CCRect rc1 = sprite->boundingBox(); if (rc1.containsPoint(touchPoint)) { pSprite = sprite; return true; } } return false; } void HelloWorld::ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent) { CCPoint beginPoint=pTouch->getLocationInView(); beginPoint=CCDirector::sharedDirector()->convertToGL(beginPoint); CCPoint endPoint=pTouch->getPreviousLocationInView(); endPoint=CCDirector::sharedDirector()->convertToGL(endPoint); CCPoint offSet =ccpSub(beginPoint,endPoint); CCPoint toPoint=ccpAdd(pSprite->getPosition(),offSet); pSprite->setPosition(toPoint); }
然后结合如下 缩放旋转
http://developer.egret.com/cn/example/egret2d/index.html#060-interact-multi-point
原创文章,作者:ItWorker,如若转载,请注明出处:https://blog.ytso.com/18781.html