Make a sprite appear where touched and drag it around - windows-phone

Question

Why is it so hard to drag a sprite in cocos2dx! doing this in my touchesbegan method
void HelloWorld::ccTouchesBegan(cocos2d::CCSet* touches, cocos2d::CCEvent* event){
CCSprite *splash = CCSprite::spriteWithFile("splash3.png");
CCTouch* pTouch = (CCTouch*)(touches->anyObject());
CCPoint location = pTouch->locationInView();
location = CCDirector::sharedDirector()->convertToGL(location);
splash->setPosition(ccp(location.x,location.y));
this->addChild(splash,5);
}
void HelloWorld::ccTouchesMoved(cocos2d::CCSet* touches, cocos2d::CCEvent* event){
CCSprite *splash = CCSprite::spriteWithFile("splash3.png");
CCTouch* pTouch = (CCTouch*)(touches->anyObject());
CCPoint location = pTouch->locationInView();
location = CCDirector::sharedDirector()->convertToGL(location);
splash->setPosition(ccp(location.x,location.y));
this->addChild(splash,5);
}
what am I doing wrong and whats more to be done? and is there an easier way to do this???

Answer 1

You need to add a sprite only once. You can either keep a global reference or retrieve the sprite using its tag. Also, you may be calculating touch position incorrectly. Try this
void HelloWorld::ccTouchesBegan(cocos2d::CCSet* touches, cocos2d::CCEvent* event){
CCSprite *splash = CCSprite::spriteWithFile("splash3.png");
CCPoint location = getPositionFromTouches(touches, event);
splash->setPosition(ccp(location.x,location.y));
this->addChild(splash,5, 100);
}
void HelloWorld::ccTouchesMoved(cocos2d::CCSet* touches, cocos2d::CCEvent* event){
CCSprite *splash = (CCSprite*) getChildByTag(100);
CCPoint location = getPositionFromTouches(touches, event);
splash->setPosition(ccp(location.x,location.y));
}
CCPoint HelloWorld::getPositionFromTouches(CCSet* _touches, CCEvent* event) {
CCArray *allTouches = CCArray::create();
CCSetIterator it;
for( it = _touches->begin(); it != _touches->end(); it++)
{
allTouches->addObject((CCTouch *)*it);
}
//CCArray *allTouches = getAllTouchesFromSet(_touches);
CCTouch* fingerOne = (CCTouch *)allTouches->objectAtIndex(0);
CCPoint pointOne = CCDirector::sharedDirector()->convertToUI(fingerOne->getLocationInView());
CCPoint location = _armadilloSingleton->convertToNodeSpace(pointOne);
return location;
}

Answer 2

spriteWithFile is not there in cocos2d2.0.4.
So can you please update the code according to the latest version of COCOCS2D