import browser.Applet;
import awt.Graphics;
/** 
 Program: 	Scene class
 Purpose: 	applet that implements a scene of activity
 @author 	john@december.com
 @version 	1.99; 23 Jul 1995
 */

class Scene extends Applet implements Runnable {

   static int sceneWidth  = 500;
   static int sceneHeight = 500;

   private Thread flow;
   private Events action; 
   private boolean done = false;
   private boolean pause = false;

   public void init() {
      resize(sceneWidth, sceneHeight);
   }

   public void start() {
      flow = new Thread(this);
      flow.start();
      action = new Events();
   }

   public void paint(Graphics context) {
      context.clearRect(0, 0, sceneWidth, sceneHeight);
      action.nextEvent(); 
      action.paint(context); 
      done = (action.moreEvents() == false);
   }

   public void update() {
      repaint();
   }

   public void run() {
      try {
          while (!done) {
             if (!pause) repaint();
          }
      }
   }

   public void stop() {
      done = true;
      if (flow.isAlive()) flow.stop();
      flow = null;
   }
     
   public void mouseDown(int x, int y) { 
      pause = !pause;
   }
}