cocos2d-x 单点触摸事件使用

概述场景类头文件： #ifndef __USE_SPRIT_SCENE_H__#define __USE_SPRIT_SCENE_H__#include "cocos2d.h"typedef enum{ box_a = 102, box_b, box_c} SpriteTags;class UseSprit :public cocos2d::Layer{public:

场景类头文件：

#ifndef__USE_SPRIT_SCENE_H__#define__USE_SPRIT_SCENE_H__#include"cocos2d.h"typedefenum{	Box_a=102,Box_b,Box_c}SpriteTags;classUseSprit:publiccocos2d::Layer{public:	staticcocos2d::Scene*createScene();	//there'sno'ID'incpp,sowerecommendreturningtheclassinstancepointer	//Here'sadifference.Method'init'incocos2d-xreturnsbool,insteadofreturning'ID'incocos2d-iphone	virtualboolinit();	//	virtualvoIDonEnter();	//	virtualvoIDonExit();	booltouchBegan(cocos2d::touch*touch,cocos2d::Event*event);	voIDtouchmoved(cocos2d::touch*touch,cocos2d::Event*event);	voIDtouchended(cocos2d::touch*touch,cocos2d::Event*event);	//implementthe"staticcreate()"methodmanually	CREATE_FUNC(UseSprit);};#endif

说明：1.单点触摸事件分为三段：开始拖动（touchBegan）、拖移(touchmoved)、释放拖动(touchended)；

2.它们拥有共同参数：cocos2d::touch* touch,cocos2d::Event *event；

3.onEnter 初始化的时候调用，即 刚要显示当前场景的时候（场景进入的时候调用）；

4.onExit 场景退出的时候调用；

场景类源文件：

#include"UseSpritScene.h"USING_NS_CC;Scene*UseSprit::createScene(){	//'scene'isanautoreleaSEObject	autoscene=Scene::create();	//'layer'isanautoreleaSEObject	autolayer=UseSprit::create();	//addlayerasachildtoscene	scene->addChild(layer);	//returnthescene	returnscene;}//on"init"youneedtoinitializeyourinstanceboolUseSprit::init(){	//////////////////////////////	//1.superinitfirst	if(!Layer::init())	{		returnfalse;	}	SizevisibleSize=Director::getInstance()->getVisibleSize();	Vec2origin=Director::getInstance()->getVisibleOrigin();	//	autobg=Sprite::create("bg.png",Rect(0,visibleSize.wIDth,visibleSize.height));	Texture2D::TexParamstp={GL_liNEAR,GL_liNEAR,GL_REPEAT,GL_REPEAT};	bg->getTexture()->setTexParameters(tp);	bg->setposition(origin+Vec2(visibleSize.wIDth/2,visibleSize.height/2));	addChild(bg,0);	Sprite*BoxA=Sprite::create("ygq.png");	BoxA->setposition(origin+Vec2(visibleSize.wIDth/2,visibleSize.height/2)+Vec2(-120,120));	addChild(BoxA,10,Box_a);		Sprite*BoxB=Sprite::create("yg.png");	BoxB->setposition(origin+Vec2(visibleSize.wIDth/2,visibleSize.height/2));	addChild(BoxB,20,Box_b);	Sprite*BoxC=Sprite::create("ygq.png");	BoxC->setposition(origin+Vec2(visibleSize.wIDth/2,visibleSize.height/2)+Vec2(120,160));	addChild(BoxC,30,Box_c);	returntrue;}voIDUseSprit::onEnter(){	Layer::onEnter();	log("UseSpritonEnter");	autoListener=EventListenertouchOneByOne::create();	Listener->setSwallowtouches(true);	Listener->ontouchBegan=CC_CALLBACK_2(UseSprit::touchBegan,this);	Listener->ontouchmoved=CC_CALLBACK_2(UseSprit::touchmoved,this);	Listener->ontouchended=CC_CALLBACK_2(UseSprit::touchended,this);	Eventdispatcher*eventdispatcher=Director::getInstance()->getEventdispatcher();	eventdispatcher->addEventListenerWithSceneGraPHPriority(Listener,getChildByTag(Box_a));	eventdispatcher->addEventListenerWithSceneGraPHPriority(Listener->clone(),getChildByTag(Box_b));	eventdispatcher->addEventListenerWithSceneGraPHPriority(Listener->clone(),getChildByTag(Box_c));}boolUseSprit::touchBegan(touch*touch,Event*event){	autotarget=static_cast<Sprite*>(event->getCurrentTarget());	Vec2locationInNode=target->convertToNodeSpace(touch->getLocation());	Sizes=target->getContentSize();	Rectrect=Rect(0,s.wIDth,s.height);	if(rect.containsPoint(locationInNode))	{		target->runAction(ScaleBy::create(0.06f,1.06f));		returntrue;	}	returnfalse;}voIDUseSprit::touchmoved(touch*touch,Event*event){	autotarget=static_cast<Sprite*>(event->getCurrentTarget());	target->setposition(target->getposition()+touch->getDelta());}voIDUseSprit::touchended(touch*touch,Event*event){	autotarget=static_cast<Sprite*>(event->getCurrentTarget());	Vec2locationInNode=target->convertToNodeSpace(touch->getLocation());	Sizes=target->getContentSize();	Rectrect=Rect(0,1.0f));	}}voIDUseSprit::onExit(){	Layer::onExit();	Director::getInstance()->getEventdispatcher()->removeAllEventListeners();}

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