//        ****    Sax Player applet *****
//    ***** This applet by  M. Gallant    7/02/96  ******


import java.awt.*;
public class saxplay extends java.applet.Applet implements Runnable {
    Image offIm;
    Graphics offGr;
    Thread runner;
    Color fgnd , bgnd;
    Image sax;
    Image[] note = new Image[5] ;
    Image curIm ;
    int w,h, imRand, rate, notePlay;
    int xnote,ynote, xnotec, ynotec;  //position to draw note.
    boolean initIm;
    MediaTracker tracker;

 public void init() {                    
           initIm = true ;
           bgnd = new Color(221,187,221) ;
           setBackground(bgnd) ;
           setForeground(bgnd) ;
           w  = this.size().width;
           h  = this.size().height;              
           offIm = createImage(w, h);
           offGr = offIm.getGraphics();           
           offGr.setColor(bgnd) ;
           tracker = new MediaTracker(this) ;

        sax = getImage(getCodeBase(), "saxman5.gif") ;
        tracker.addImage(sax, 0) ;     // track background separately.

 
     note[0] = getImage(getCodeBase(), "whinote.gif") ;
     note[1] = getImage(getCodeBase(), "blunote.gif") ;
     note[2] = getImage(getCodeBase(), "rednote.gif") ;
     note[3] = getImage(getCodeBase(), "yelnote.gif") ;
     note[4] = getImage(getCodeBase(), "grenote.gif") ;
      for(int i=0; i<=4; i++) 
       tracker.addImage(note[i], 1) ;
     xnote=115;
     ynote=50;   
     rate=1 ;
}


 public void start()  {
     if (runner == null)  {
     runner = new Thread(this);
     runner.start();
    }
 }

public void stop() {
   if (runner != null) {
        runner.stop();
        runner = null;
     }
 }

 
 public void pause(int time) {
            try { Thread.sleep(time);}  // wait for time milliseconds.
            catch (InterruptedException e) { }
         }

  public  void run() {
   repaint() ;
     try{
          tracker.waitForID(0) ;          
          }
          catch (InterruptedException e) {
            return;
           }
       while (true)  { 
             curIm=sax ;
             rate = 1 +(int)(3.0*Math.random()) ;
             notePlay = (int)(4.99*Math.random()) ;
             ynotec=40;
             for(xnotec=105; xnotec<=135; xnotec+=rate){ //move that note.
               ynotec-=2*rate;
                 xnote=xnotec + (int)(4*Math.sin(xnotec)) ;
                 ynote=ynotec ;  
                repaint() ;
                pause(100) ;
            }
        pause(200) ;
       } 

   }

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

 public  void paint(Graphics g) {           
  
if ((tracker.statusID(1, true) == MediaTracker.COMPLETE)&&(curIm!=null)) {
  offGr.fillRect(0,0,w,h) ; 
  offGr.drawImage(sax,0,0,this) ;          
  offGr.drawImage(note[notePlay],xnote,ynote,this) ;   
  g.drawImage(offIm,0,0,this) ;   
  }
   else    if (tracker.statusID(0, false) == MediaTracker.COMPLETE) {  
                offGr.fillRect(0,0,w,h) ;
                offGr.drawImage(sax,0,0,this) ;
                g.drawImage(offIm,0,0,this) ;          
            }
   else   {  
        g.setColor(bgnd) ;
        g.fillRect(0,0,w,h) ;
       }
 } 


   public String getAppletInfo() {
   return "Copyright 1996 Michel Gallant";
  } 
 
}