Cocos2D - When I animate second sprite, first stops animating - animation

Question

So the issue here is when I create one animated projectile, everything is fine. As soon as the user creates a second, the first stops animating.
Alright, here's how I'm setting it up in my init:
[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:
#"acorns.plist"];
CCSpriteBatchNode *spriteSheet = [CCSpriteBatchNode
batchNodeWithFile:#"acorns.png"];
[self addChild:spriteSheet];
NSMutableArray *flyingFrames = [NSMutableArray array];
for(int i = 1; i <= 4; ++i) {
[flyingFrames addObject:
[[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:
[NSString stringWithFormat:#"acorn%d.png", i]]];
}
CCAnimation *flying = [CCAnimation
animationWithFrames:flyingFrames delay:0.5f];
self.flying = [CCRepeatForever actionWithAction:
[CCAnimate actionWithAnimation:flying restoreOriginalFrame:NO]];
Then, in my create bullets method which is called when the user taps the screen, I do:
CCSprite *bullet = [CCSprite spriteWithSpriteFrameName:#"acorn1.png"];
bullet.position = CGPointMake(140.0f, FLOOR_HEIGHT+145.0f);
[bullet runAction:_flying];
[self addChild:bullet z:9];
[bullets addObject:bullet];
So the first time the user taps, everything works fine. The second time, an animated bullet is created, but the existing one stops animating, and so on.

Answer 1

I believe each sprite should have its own actions, ie you cant reuse an action while the action is in progress. Something like:
CCSprite *bullet = [CCSprite spriteWithSpriteFrameName:#"acorn1.png"];
bullet.position = CGPointMake(140.0f, FLOOR_HEIGHT+145.0f);
id _fly=[CCAnimation animationWithFrames:flyingFrames delay:0.5f];
id _flyForever = [[CCRepeatForever _fly];
[bullet runAction:_flyForever];
[self addChild:bullet z:9];
[bullets addObject:buller];
The flyingFrames can be referenced by multiple animations, so you must take care of retaining the array for reuse.