title: How do I implement better time step (fixed or semi-fixed) in box2d?
body: <p>I was wondering if someone could help me understanding fixing my time step within box2d. Im trying to improve a game I just released <a href="http://itunes.apple.com/us/app/bounce-z-ballz/id425995208?mt=8" rel="nofollow">Bounce Z Ballz</a>, by implementing a better time step (I currently use the built in variable time step).  I have been reading some helpful information, but I can't really grasp my head around turning something similar to the built in cocos2d/box2d template to be something like <a href="http://gafferongames.com/game-physics/fix-your-timestep/" rel="nofollow"> Glenn Fiedler's</a> solution. </p>
  
  <p>TL;DR (I want to change my cocos2d/box2d game time step from the built in variable time step to something more consistent)</p>
  
  <p>Thanks,</p>
  
  <p>Steve </p>