animation using threads dilemma

[Vonique Leary]

 

import java.applet.*;
import java.awt.*;
public class FinalProject extends Applet   implements Runnable

{

  private int index = 0;
 
  int[] vert = {220,210,200,190,180};

  private int sleep = 100;


public void start()
   {
      index = 0;
   }

public void paint(Graphics gr)
  {
    gr.drawRoundRect(55,50,60,60,80,80);
    gr.drawLine(15,150,160,150);//arms
    gr.drawLine(85,210,40,310);//legs
    gr.drawLine(85,210,130,310);  
    gr.drawLine(85,110,85,210);//torso   
    gr.drawLine(160,150,160,vert[index]); //yoyo string 160,200
    gr.drawLine(15,150,15,vert[index]); //yoyo string 200
    gr.drawRoundRect(8,vert[index],20,20,20,20);//yoyo
    gr.drawRoundRect(150,vert[index],20,20,20,20);//yoyo
  

    ++index;
    if(index == 4)
       index = 0;

}
public void run()
{  
  try
      {
         Thread.sleep(sleep);
       }
      catch(InterruptedException e)
       {
       }

    repaint();
           }
     
           }
       
   
      

Hello,

I've been tasked with animating this stick figure using a yoyo. I have been able to do that with the above code, but my problem is that the yoyos need to be going up and down at different rates. I know I need to add another thread but what is confounding me is that since I cannot write two paint methods in one applet, how will I distinguish which yoyo and string is going at which rate? How can I split up the paint method so that one part goes in one thread and another part is going in another thread and each thread's yoyos are going at different rates? Or am I totally going off the deep end???

Any help or suggestions would be appreciated, as I'm thoroughly confused.

Also, why is it that Runnable has to be implemented in order to use the run method? Why can't we just create our own run method and forget Runnable?

Thanks,
Vonique

[Campbell Ritchie]

The reason you have to implement Runnable is that the parameter type of the methods calling it is Runnable.
Have you tried the Timer class in the Swing package? Note the links from that API page.

I think this thread is a candidate for moving to the Swing forum.

[Vonique Leary]

Okay, I will do that. Thank you, Campbell!

Vonique

[Campbell Ritchie]

You're welcome

I hope it works

[Vonique Leary]

Is there a way to edit this post? I only meant to post my code and my questions, not Campbell's reply. Thanks, Vonique

[Rob Spoor]

If there no longer is an edit button then no, you cannot edit that post anymore.