We developed a game with web start, the problem is that it seems the jPCT takes so much cpu and memory.
I think it is not the problem caused by my code. because I access http://www.jpct.net/demos.html and click some very simple demos,
it also takes much cup and memory.
Anybody has solution for this issue?
Thanks.
Hello
what do you mean by "so much"? What is the complexity of your environment? And what renderer are you using?
Use sleep between renderings. I do rendering 25 times per minute and it only uses 2,3 percent of CPU (opengl mode)
Thanks.
You mean in the loop to render the screen, use Thread.sleep?
I will try.
Thanks anyway.
I use it like this
//fps.. like 25
int sleepTime = 1000 / fps;
long first = System.currentTimeMillis();
long second = 0;
long actualSleepTime = 0;
while (bRender) {
//do some stuff in world here
buffer.clear();
world.renderScene(buffer);
world.draw(buffer);
buffer.update();
buffer.displayGLOnly();
second = System.currentTimeMillis();
actualSleepTime = sleepTime - (second - first);
if (actualSleepTime < 0) {
actualSleepTime = 0;
}
try {
Thread.sleep(actualSleepTime);
}
catch (InterruptedException ie) {}
first=second;
}
The problem is that I must render the screen in every 10 ms.
Maybe that's the reason the jpct eats so much cpu.
There can also be other reasons, like complex objects you are rendering (lot of polygons)...
It eats up what you are giving to it. The demos are designed to run at full speed, which results in 100% cpu usage on a single core machine. If you don't want that, render less frames. As said, at a sleep if possible. And how much is much? You may try to use Config.saveMemory=true to save seom memory at the cost of...well, of almost nothing. Just try it and see if it helps.