写一个判断单点触摸某图片区域的例子。

效果：输出触摸处坐标，并判断是否点击了图片区域。

.h 文件

#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__

#include "cocos2d.h"
using namespace cocos2d;
class HelloWorld : public cocos2d::CCLayer
{
public:
    // Here's a difference. Method 'init' in cocos2d-x returns bool, instead of returning 'id' in cocos2d-iphone
    virtual bool init();  

    // there's no 'id' in cpp, so we recommend returning the class instance pointer
    static cocos2d::CCScene* scene();

    // a selector callback
    void menuCloseCallback(CCObject* pSender);

    // implement the "static node()" method manually
    CREATE_FUNC(HelloWorld);

    virtual void onEnter();
    virtual void onExit();
    virtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);
    CCRect pobject;
};

#endif // __HELLOWORLD_SCENE_H__

.CPP文件

#include "HelloWorldScene.h"

USING_NS_CC;

CCScene* HelloWorld::scene()
{
    // 'scene' is an autorelease object
    CCScene *scene = CCScene::create();

    // 'layer' is an autorelease object
    HelloWorld *layer = HelloWorld::create();

    // add layer as a child to scene
    scene->addChild(layer);

    // return the scene
    return scene;
}

// on "init" you need to initialize your instance
bool HelloWorld::init()
{
    //////////////////////////////
    // 1. super init first
    if ( !CCLayer::init() )
    {
        return false;
    }

    CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();
    CCPoint origin = CCDirector::sharedDirector()->getVisibleOrigin();

    /////////////////////////////
    // 2. add a menu item with "X" image, which is clicked to quit the program
    //    you may modify it.

    // add a "close" icon to exit the progress. it's an autorelease object
    CCMenuItemImage *pCloseItem = CCMenuItemImage::create(
                                        "CloseNormal.png",
                                        "CloseSelected.png",
                                        this,
                                        menu_selector(HelloWorld::menuCloseCallback));

	pCloseItem->setPosition(ccp(origin.x + visibleSize.width - pCloseItem->getContentSize().width/2 ,
                                origin.y + pCloseItem->getContentSize().height/2));

    // create menu, it's an autorelease object
    CCMenu* pMenu = CCMenu::create(pCloseItem, NULL);
    pMenu->setPosition(CCPointZero);
    this->addChild(pMenu, 1);

    CCSprite *pSprite = CCSprite::create("Icon-72.png");

    pSprite->setPosition(ccp(visibleSize.width/2,visibleSize.height/2));

    this->addChild(pSprite,0);
    pobject = pSprite->boundingBox();

    /////////////////////////////
    // 3. add your codes below...

    // add a label shows "Hello World"
    // create and initialize a label
    /*

    CCLabelTTF* pLabel = CCLabelTTF::create("Hello World", "Arial", 24);

    // position the label on the center of the screen
    pLabel->setPosition(ccp(origin.x + visibleSize.width/2,
                            origin.y + visibleSize.height - pLabel->getContentSize().height));

    // add the label as a child to this layer
    this->addChild(pLabel, 1);

    // add "HelloWorld" splash screen"
    CCSprite* pSprite = CCSprite::create("HelloWorld.png");

    // position the sprite on the center of the screen
    pSprite->setPosition(ccp(visibleSize.width/2 + origin.x, visibleSize.height/2 + origin.y));

    // add the sprite as a child to this layer
    this->addChild(pSprite, 0);
     */

    return true;
}

void HelloWorld::menuCloseCallback(CCObject* pSender)
{
    CCDirector::sharedDirector()->end();

#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
    exit(0);
#endif
}

void HelloWorld::onEnter()
{
    CCLayer::onEnter();
    this->setTouchEnabled(true);
    CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this,0,true);
}

void HelloWorld::onExit()
{
    CCLayer::onExit();
    CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);
}

bool HelloWorld::ccTouchBegan(CCTouch *pTouch, CCEvent* pEvent)
{
    CCPoint touchlocation = pTouch->getLocation();
    CCPoint location = convertToNodeSpace(touchlocation);
    CCLog("location is x=%f y=%f",location.x,location.y);

    //CCRect rect = CCRectMake(0,0,200,200);
    //bool flag = rect.containsPoint(location);
    bool flag = pobject.containsPoint(location);
    if (flag)
        CCLog("Hit the area");
    else
        CCLog("miss the area");

    return false;
}