class FpsCalculator{public:	void Start()	{		lasttick=SDL_GetTicks();		fps=0.0f;		frames=0;		fpslimit=30;		tickdelta=1.0f;		currentticks=lasttick;		oldtick=lasttick;	};	void RunFrame()	{		float milliPerFrame;		float aimMilliPerFrame;		float shiftMilliPerFrame;		currentticks=SDL_GetTicks();		frames++;		if (oldtick+1000<currentticks)		{			frames=0;						oldtick=currentticks;		}		milliPerFrame=currentticks-lasttick;		tickdelta=(tickdelta+1.0f/((((float)fpslimit)/1000.0f)*milliPerFrame))/2.0f;		fps=tickdelta*(float)fpslimit;		aimMilliPerFrame=1000.0f/(float)fpslimit;		shiftMilliPerFrame=aimMilliPerFrame*tickdelta-aimMilliPerFrame;		if (shiftMilliPerFrame>0.0f)		{			SDL_Delay((Uint32)shiftMilliPerFrame);		}		lasttick=currentticks;	};	void Setlimit(int limit)	{		fpslimit=limit;	};	float Getfps()	{		tickdelta=1.0f;		return fps;	};	int GetFrames()	{		return frames;	};	Uint32 currentticks;	Uint32 lasttick;	Uint32 oldtick;	float tickdelta;	float fps;	int frames;	int fpslimit;};  

  Uint32 timecallback(Uint32 interval, void* param){       //Draw Frame};int main( int argc, char* argv[] ){	SDL_Event	event;	bool		done=false;	SDL_TimerID     id;        int             fps=30;	id=SDL_AddTimer(1000/fps,timecallback, &scenedata);        //1000/fps is the number of milliseconds per frame        // this will have to be adjusted to account for timer        // latency if you want to have an exact fps	while (!done)	{                //Main program loop		SDL_WaitEvent(&event);                 //basically all we have to do is wait for events                // and then process them	}	SDL_RemoveTimer(id);	SDL_Quit();  return 0;}