title: Cocos2D - NSMutableArray of CCSprites
body: <p>I tried storing some CCSprites in a NSMutableArray, but the game crashed immediately, I'm guessing it's a memory problem, and I'm also guessing that CCSprites are autorelease objects?</p>
  
  <p>So, how would I store multiple CCSprites in a NSMutableArray?</p>
  
  <p>The purpose I wanna do this is store for example all enemies in an array, and then loop through them in my timestep function and update their positions and whatnot.</p>
  
  <p>What I tried to do:</p>
  
  <pre><code>NSMutableArray *enemies = [NSMutableArray array];
  [enemies addObject: [CCSprite spriteWithFile: @"hello.png"]];
  </code></pre>
  
  <p>It crashes when I try to reach the sprite using -objectAtIndex:</p>