Hey I m creating a game or more like a simulation following

Question

Hey I m creating a game or more like a simulation following the example of the Falling Balls Game on github But my game is kinda lagging and it s also fps dependent The example covers that I think but I don t think I m implementing it right Currently I have thread

Jan · Answer

```val x = simX SCALE + windowWidth 2 val y = simY SCALE + windowHeight 2 this updates the x and y coordinates ```

Jan · Answer

Here you can see the lag

Jan · Answer

This is the loop ``` LaunchedEffect Unit while true withFrameNanos if sim hasStarted amp amp sim isPaused sim update it ```

Jan · Answer

But I m currently ignoring it in the code above

Landry Norris · Answer

Have you wrapped sim update in measureTimeMillis to see if that s the bottleneck

Jan · Answer

thats giving me 0 or 1

Landry Norris · Answer

It looks like the update function isn t causing a bottleneck then Have you tried saving the last nanos value to get the exact fps it s running at

Landry Norris · Answer

It looks like you re trying to run it as fast as possible Whenever I do something on loop I usually set up a class that uses coroutines to set up an event loop It would basically have a suspend function named run or something and would loop checking if Clock System now is greater than the last time plus a delay delaying 1ms if it isn t

Landry Norris · Answer

This will even out the fps more than running it as fast as possible

Jan · Answer

lemme try this

Jan · Answer

Like that ``` val millis = System currentTimeMillis if millis lt previousTimeNanos + 1 delay 1 previousTimeNanos = millis``` it still lags

Jan · Answer

used ur example but it somehow makes it worse ``` val nano = Clock System now if nano lt previousTimeNano plus 1 milliseconds delay 1 previousTimeNano = nano```

Landry Norris · Answer

The while loop should start with if nano lt previousTimeNano plus 16 milliseconds continue so you are comparing to the last actual frame time

Landry Norris · Answer

I generally use if lastTime periodUntil now TimeZone UTC nanoseconds lt delay delay 1 continue

Landry Norris · Answer

After that set lastTime to now and call your frameTick function

Jan · Answer

Sorry for bothering you for so long but like that ``` while true if sim previousTimeNano periodUntil Clock System now TimeZone UTC nanoseconds lt 16 milliseconds inWholeNanoseconds delay 1 continue sim previousTimeNano = Clock System now if sim hasStarted sim update scrollState ```

Landry Norris · Answer

That looks fine I personally would set now to a variable once so it will be the same in both places affects how framerate works when your frame tick takes time