Recording FPS help

[zidsal]

hi their I've been lurking on these forums for the last week or so and today I decided to make an account after being stuck with these issues (yay for leeching). I'm trying to make a game with java2d and I'm having issues recording the fps.

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//variables used for finding fps    private long prevStatsTime;     double fps = 0;     int frameCount = 0;     long totalElapsedTime = 0L;     public void run(){         .....         prevStatsTime = System.nanoTime();         while(running = true){              .....              beforeTime = System.nanoTime();             }         ......         recordInfo();     }     public void recordInfo()     {          long realElapsedTime = System.nanoTime() - prevStatsTime;         frameCount++;         totalElapsedTime += realElapsedTime;         if(totalElapsedTime > 0)         fps = (((double)frameCount/totalElapsedTime)*1000000000L);         prevStatsTime = System.nanoTime();     }     public void drawInfo(Graphics g)     {          ...         g.drawString("FPS: " + fps, 0, 30);     }

the issue I'm having is that the fps slowly decreases so obviously its not recording the fps >.< any help would be really great I would prefer a nudge in the right direction rather then you flat out explaining it to me if you wouldn't mind.

many thanks

[Riven]

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final long measureInterval = 1000 * 1000000L; // one second long lastMeasure = System.nanoTime(); int frameCounter; int lastFrameCount; public void onRenderFrame() {     this.frameCounter++;     long now = System.nanoTime();     if(now >= this.lastMeasure + measureInterval)     {        this.lastFrameRate = this.frameCounter;        this.frameCounter = 0;        // WRONG: this.lastMeasure = now;      this.lastMeasure += measureInterval;     } }

[zidsal]

thank you very much <3

Games published by our own members! Check 'em out!

[Captain Awesome]

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final long measureInterval = 1000 * 1000000L; // one second long lastMeasure = System.nanoTime(); int frameCounter; int lastFrameCount; public void onRenderFrame() {     this.frameCounter++;     long now = System.nanoTime();     if(now >= this.lastMeasure + measureInterval)     {        this.lastFrameRate = this.frameCounter;        this.frameCounter = 0;        // WRONG: this.lastMeasure = now;      this.lastMeasure += measureInterval;     } }

*yoink*

Thanks