text: class timer 
  {
  	public:
  		timer();
  		void start();
  		Uint32 get_time();
  	private:
  		Uint32 starting_ticks;
  };
  
  timer::timer()
  {
  	starting_ticks = 0;
  }
  
  void timer::start()
  {
  	starting_ticks = SDL_GetTicks();
  }
  
  Uint32 timer::get_time()
  {
  	return SDL_GetTicks() - starting_ticks;
  }
  