Java – using thread Sleep() limits the frame rate

I'm making dynamic wallpaper, so don't worry about physical collision I just want to keep the frame rate as smooth as possible, up to 30 FPS, so as to save battery power

For this purpose, at the end of the cycle, I measure the time since the beginning of the cycle If the frame takes less than 33 ms, I use thread Sleep() to sleep the number of MS, up to 33

But I know thread Sleep () is not very accurate and may take longer than I asked for I don't know how much it is

Which method can I use to provide a more uniform rate?

Solution

Yes, thread Sleep () is not super precise

You can try to use adaptive strategy – instead of just sleep (remaining), there is a long lastdelay, and whenever you observe too high frame rate, you will increase it, and thread will occur every time you observe Sleep (last delay) frame rate is too low – you can reduce it So find the correct number the second time or after your code

By the way, thread Sleep is not the best way to limit the frame rate Using timer is more promising - but you will encounter the same problem because the accuracy of timer is likely to be the same as thread Same as sleep()