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【cocos2d-x】どのCCSpriteがタッチされたか判断する

Last updated at Posted at 2014-05-21

##流れ
1,CCSpriteにTagをセット
2,ccTouchEnded関数にてタッチイベントを適切に処理する

##CCSpriteにTagをセット

int hoge = HOGE_NUMBER;

CCSprite* pCard = CCSprite::create("画像名");
pCard -> setTag(hoge);

##ccTouchEnded関数にてタッチイベントを適切に処理する
①ccTouchBegan、ccTouchEnded関数ともにヘッダーで定義
②ccTouchEndedに処理を追加

bool クラス名::ccTouchBegan(CCTouch* pTouch, CCEvent *pEvent)
{
    return true;
}

void クラス名::ccTouchEnded(CCTouch* pTouch, CCEvent *pEvent)
{
	int hogeTagNumber = HOGE_TAG_NUMBER
	
    //タッチポイントを取得(convertToGLにてOpenGLの座標に変換)
    CCDirector* pDirector = CCDirector::sharedDirector();
    CCPoint touchPoint = pDirector -> convertToGL(pTouch -> getLocationInView());
    
    //タグのインスタンスを取得
    CCNode* pHoge = this -> getChildByTag(hogeTagNumber);
    
    if (!pHoge) {
	//pHogeインスタンスが取得できなかった場合は処理を抜ける
        return;
    }
    
	//pHogeのサイズを取得する
    CCRect hogeRect = pHoge -> boundingBox();
    
    if (hogeRect.containsPoint(touchPoint)) {
    	//タッチポイントがhogeRectの範囲内    
       //以下にそれぞれの処理を追加する
        
    }
}

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