title: Static counter to be repeatedly incremented by NSTimer
body: <p>Every 1/16 of a second, I have an NSTimer that fires, calling a method each time. I want to create a static integer that is increased by '1' each time the method is called, once the static integer is equal to '16', I wish to call another method and reset the static integer to '0'. </p>
  
  <p>Any insight is greatly appreciated. (Language is Obj-C)</p>