Does anyone know how to calculate framerates? altair altair734@yahoo.com crawlegend.iwarp.com

I created this class to handle fps for debug purposes:

//
// This class is for timeing the game and calculate framrate
//

class CLTIMER {

private:
float timeoffset;
DWORD currenttime, lasttime;
float updatefps;
int fps;
int frames ;

public:
CLTIMER :: CLTIMER() {
updatefps = 0.0f;
fps = 0;
frames = 0;
}

CLTIMER :: ~CLTIMER() {

}

void CLTIMER :: GetTimePassed() {
// if the game just started, set lasttime to the
// current time this prevents the game from
// thinking that several hours have passed from
// the last frame.
if (lasttime == 0) lasttime = timeGetTime();

// get the current time
currenttime = timeGetTime();

// calculate the offset
timeoffset = ((float(currenttime) - lasttime) / 1000);


updatefps += timeoffset;
frames += 1;

if (updatefps >= 0.2f) {
fps = (int)(frames / updatefps);
frames = 0;
updatefps = 0.0f;
}

// put the current time in the lasttime variable
lasttime = currenttime;

}

float CLTIMER :: TimePassed () {
return timeoffset;
}

int CLTIMER :: FrameRate() {
return (int)(fps);
}

};

CLTIMER timer;


Call timer.GetTimePassed() once every frame and when you want the fps just call timer.FrameRate()



The dictionary is the only place where success comes before work.

I use this. I got it from realtime strategy game programming book. then use a function for putting text on the screen to view it. The framerate is in the variabel buff.

//FPS/////////////////////////////
static int time = 0;
static int frame = 0;
static int count = 0;
static int timelast = 0;
time = timeGetTime();
count++;
if(time-timelast >= 1000)
{
frame = count;
timelast = time;
count = 0;
}
char buff[40];
itoa(frame, buff,10);
//////////////////////////////////

timeGetTime has very high overheads..bad..

Look up the PerformanceCounter in the MSDN docs.