how do i calculate the frames per second for my game

Here's an easy way to do it.

1. increment a variable (int) after a frame is drawn (usually at the bottom of your game loop)

2. Calculate when 1 second (use GetTickCount or similar) has elapsed. (you'll need two variables one for the current time and one for the original time [1 second earlier])

3. After 1 second has elapsed the variable will represent the frames per second. You can then store this value in another variable to display it on the screen, calculate average fps. Reset the variable (set it = to 0).

4.The process begins again.

Here's some psuedo code

        // end of loopfps++;if(current_time - original_time >= 1000){      fps_previous = fps; // stores fps value     fps=0;     original_time = GetTickCount();}        

+AA_970+

Edited by - +AA_970+ on July 22, 2000 2:41:40 PM

well i tried to implement your method and i set all variables to 0 but all i get is a one displayed

Howa bout dis, straight out my own Engine

    //Frames Per Second = Num Frame / Elasped Time in Secondsclass CFPS_Counter {private:	DWORD StartTime;	//The Start Time	DWORD CurrTime;		//Current Time	DWORD NumFrame;		//Number of Frames since start	float Fps;			//Current Frames Per Second	float Spf;			//Current Seconds Per Frame	char FPSstring[128];//Dont Overflow<img src="smile.gif" width=15 height=15 align=middle>	unsigned long delay;		public:	int 	StartFPS();			//Starts the FPS Counter	int 	UpdateFPS();	//Updates the Fps Variable	float	ReturnFPS(){return Fps;}	//Returns the Fps variable	int 	DrawFPS();	//Returns the Speed Per Frame from the Num per second	float	NumPerSecond(float in){return in*Spf;}			CFPS_Counter(){}	~CFPS_Counter(){}};//Draws the FPSint CFPS_Counter::DrawFPS(){	if(sprintf(FPSstring,"%f",ReturnFPS())<=0)return FALSE;	Console.Font.glPrint(0,0,FPSstring,1);	return TRUE;}int CFPS_Counter::StartFPS(){	NumFrame=0;	delay=0;	StartTime = GetTickCount();	return TRUE;} int CFPS_Counter::UpdateFPS(){	float tempFPS;	NumFrame++;	CurrTime = GetTickCount();	tempFPS = 1000.0f*((float)NumFrame/((float)CurrTime-(float)StartTime));	Spf = 1/tempFPS;	if(NumFrame>200)StartFPS();		delay++;	if(delay>15)	{		Fps=tempFPS;		delay=0;	}			return TRUE;}    

Hope it helped