package greenfoot.sound;

import java.util.LinkedList;




| A thread to process certain sound commands, which for some reason
| must be processed in a separate thread.
|
| @author Davin McCall
|
public class ClipProcessThread
implements Runnable{    
   private Thread thread;
    
   
   private LinkedList<SoundClip> queue = new LinkedList<SoundClip>();
    
   
   public ClipProcessThread()
   {        
      thread = new Thread(this);
      thread.setDaemon(true);
      thread.start();     
      }
    
   
   public void addToQueue(SoundClip clip)
   {
      synchronized (queue) {
         queue.add(clip);
         queue.notify();
            
           
         
         
         if (! thread.isAlive()) {                
            thread = new Thread(this);
            thread.setDaemon(true);
            thread.start();             
            }         
         }     
      }
    
   
   @Override
   
   public void run()
   {        
      try {
           
      SoundClip item;
      while (true){
         synchronized (queue) {
            while (queue.isEmpty()){
               queue.wait();                     
               }
            item = queue.removeFirst();                 
            }

         item.processState();             
         }         
      }
       
   catch (InterruptedException ie) { 
   }     
} 
}