code: public void tick (long tickStamp)
      {
          if (_metamgr.isPaused()) {
              return;
          }
  
          // let derived classes do their business
          willTick(tickStamp);
  
          // tick our meta manager which will tick our sprites and animations
          _metamgr.tick(tickStamp);
  
          // let derived classes do their business
          didTick(tickStamp);
  
          // make a note that the next paint will correspond to a call to tick()
          _tickPaintPending = true;
      }
docs: from interface FrameParticipant