Control of the number of frames and screen refresh of the game using

1. screen refresh control

Public static final int FPS = 20;

Public void run ()
{
While (isplay)
{
Long starttime = system. currenttimemillis ();
Gamelogic ();

Repaint ();

Long endtime = system. currenttimemillis ();
Long costtime = endtime-starttime;
If (costtime <1000/FPs)
{
Try
{
Loopthread. Sleep (1000/FPS-costtime );
}
Catch (exception E)
{
E. printstacktrace ();
}
}
}
}

2. The number of frames in the j2_game

Number of frames, the number of times the screen is refreshed in seconds. Generally, 60 frames are enough. The number of frames for mobile games can reach 20.

For 20 frames, the time required for a single frame is 1000/20 = 50 milliseconds.