How to make certain sprite disappear after touched - Cocos2d - cocos2d-iphone

Question

I want to know how to disappear certain sprite(star) once the MainPlayer touches the Star.
Thanks. By the way, I'm new to Cocos2d and I'm doing it just for fun and educational purpose.
Thanks.

Answer 1

If you want to be able to detect touches in cocos2d, you need to set the isTouchEnabled property to YES in your init method. You can now take advantage of touch events.
Next, create the new method:
- (void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
//This method gets triggered every time a tap is detected
NSSet *allTouches = [event allTouches]; //Get all the current touches in the event
UITouch *aTouch = [allTouches anyObject]; //Get one of the touches, multitouch is disabled, so there is only always going to be one.
CGPoint pos = [aTouch locationInView:touch.view]; //Get the location of the touch
CGPoint ccPos = [[CCDirector sharedDirector] convertToGL:pos]; //Convert that location to something cocos2d can use
if (CGRectContainsPoint(yourSprite.boundingBox, ccPos)) //Method to check if a rectangle contains a point
{
yourSprite.visible = NO; //Make your sprite invisible
}
}
Other methods that you may want to take advantage of eventually are the following:
- (void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)ccTouchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event;
Hope this helped.