[Problem] JApplet image blink

[bluecora]

Hi, I've being trying to make a Java game and now the images are blinking too much because of the overuse of the repaint(). I tried to solve this using a buffer 1 and 2 but the problem remains.

i use this:

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.Math;

public class Backbuffer2 extends Applet
   implements MouseMotionListener {

   int width, height;
   Image img;
   Image backbuffer;
   Graphics backg;

   public void init() {
      width = getSize().width;
      height = getSize().height;


      img = getImage(getDocumentBase(), "fractal.gif");

      backbuffer = createImage( width, height );
      backg = backbuffer.getGraphics();
     

     
   }

   public void mouseMoved( MouseEvent e ) {




      repaint();
     
   }

   public void update( Graphics g ) {
      g.drawImage( backbuffer, 0, 0, this );
   }

   public void paint( Graphics g ) {
      update( g );
   }
}

[KevinWorkman]

...why don't you just call the repaint() method less? In fact, why do you need to call it at all? What's actually changing?

[bluecora]

i have a animation always moving , if i dont loop repaint() the images dont load

		while (running) {
			
			timePassed = System.currentTimeMillis() - cumTime;
			cumTime+=timePassed;

			
			updateMove(timePassed);
			updatePrisao( timePassed);
			preso1.update(timePassed);
			preso2.update(timePassed);
			preso3.update(timePassed);
			preso4.update(timePassed);
			repaint();
			
	        
			
			try {
				Thread.sleep(20);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}

[KevinWorkman]

What thread is that being called on? You should never call sleep() on the EDT, but you should do all painting and ui-related stuff on the EDT.

Make sure that's the case, and if you're still confused, I suggest throwing together an SSCCE that demonstrates the exact problem- basically just add an actual game loop and a single moving image to the first example you had.