Question

I have a Balloon class (see this) that inherits from CCSprite. I have given it properties like balloonSpeed and balloonStrength. I seem to be having problems in it, though.

What I want to do is that when I make an instance of the Balloon class, I want it to do the following:

• Give it a texture (a PNG file of a balloon).
• Set properties like balloonSpeed and balloonStrength.
• Add actions to make it move and accept touch input.

When the object is touched, I want to:

• Count if # of taps = balloonStrength. if so, destroy Balloon.

I have done a simpler version of this where a Balloon object is destroyed when it is touched. I want to apply OOP and custom classes here but I can’t seem to get the right way of doing it.

Thanks in advance.

Answer 1

then the h file should looks like below:

#include "cocos2d.h"
using namespace cocos2d;

class Balloon : public cocos2d::CCSprite, public CCTargetedTouchDelegate {
public:
float balloonSpeed;
int balloonStrength;
int numberOfTaps;
virtual void onEnter();
virtual void onExit();
virtual bool ccTouchBegan(CCTouch* touch, CCEvent* event);
virtual void ccTouchMoved(CCTouch* touch, CCEvent* event);
virtual void ccTouchEnded(CCTouch* touch, CCEvent* event);
}; 

and in your touch method:

bool Balloon::ccTouchBegan(CCTouch* touch, CCEvent* event){
    CCPoint touchLocation = this->getParent()->convertTouchToNodeSpace(touch);
    if (CCRect::CCRectContainsPoint(this->boundingBox(), touchLocation)) {
        this->numberOfTaps++;
        if(this->balloonStrength == this->numberOfTaps){ 
            this->removeFromParentAndCleanup(true);
        }
    }

    return true;
}

you can use it after you add the blueBalloon as a child of a layer or node as below:

blueBalloon->balloonSpeed = 2.0f;
blueBalloon->numberOfTaps = 0;
blueBalloon->balloonStrength = 5;