Cocos2d animation on sprite and detect contact on him - cocos2d-iphone

Question

I know how to detect contact on all of my sprites that on screen .
I also know how to run animation forever on a sprite .
But when puting together the code for animation, with sprite sheet- you dont actually add the sprite as a child, but ONLY the sprite-sheet, than the sprite is a child of the sprite-sheet.
[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:#"parrot.plist"];
CCSpriteBatchNode *spriteSheet = [ CCSpriteBatchNode batchNodeWithFile:#"parrot.png"];
fireBall=[CCSprite spriteWithSpriteFrameName:#"parrot1.png"];
fireBall.position=point;
[spriteSheet addChild:fireBall];
[self addChild:spriteSheet];
//here animation action perform on fireBall
In that case when looking for the fireBall for contact detection - you cant find him because he is not added as a child of the scene ,but of the sprite sheet.
How can i detect that sprite later on my code ? or there is another constellation to set the sprite sheet ?
thanks

Answer 1

You can get your fireBall sprite normally, like any other sprite...
There's some ways:
1) Create a property for your fireBall sprite:
#property (nonatomic, retain) CCSprite *fireBall;
And create and use it using self.fireball:
self.fireBall=[CCSprite spriteWithSpriteFrameName:#"parrot1.png"];
...
CGPoint fireBallPosition = self.fireBall.position;
2) Add fireBall as child on spriteSheet using tag, and get it back using the same tag.
[spriteSheet addChild:fireBall z:0 tag:1];
...
theFireBall = [spriteSheet getChildByTag:1];
But keep in mind that the fireBall position is relative of their parent, spriteSheet. So, if you move spriteSheet, you will also move spriteSheet.