NET/worlds/scape/SoundResource.java


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package NET.worlds.scape;

class SoundResource {
   private static SoundResource instance = null;
   public static final int RSX = 1;
   public static final int RA = 2;
   private int currentPlayer = 0;
   private int counter = 0;
   private boolean isShutdownTime = false;

   private SoundResource() {
   }

   private static void debugOut(int n, String s) {
      if (Sound.debugLevel > n) {
         System.out.println(s);
      }
   }

   public static SoundResource instance() {
      if (instance == null) {
         debugOut(6, "Instantiating a new SoundResource");
         instance = new SoundResource();
      }

      return instance;
   }

   public boolean syncLock(int type) {
      debugOut(6, "Calling syncLock with type " + type + " counter " + this.counter);
      if (this.isShutdownTime) {
         return false;
      } else {
         if (type != this.currentPlayer) {
            this.currentPlayer = type;
            if (this.counter > 0) {
               this.isShutdownTime = true;
            } else {
               this.currentPlayer = type;
               this.counter = 1;
            }
         } else {
            this.counter++;
         }

         return true;
      }
   }

   public synchronized void asyncLock() {
      debugOut(6, "SoundResource::asyncLock with " + this.isShutdownTime);
      boolean shutdown = false;

      while (this.isShutdownTime) {
         shutdown = true;
         Thread.yield();
         debugOut(6, "asyncLock yield");
      }

      if (shutdown) {
         debugOut(6, "asyncLock: adding artificial delay");

         try {
            Thread.sleep(500L);
         } catch (InterruptedException var3) {
         }
      }
   }

   public boolean syncUnlock() {
      debugOut(6, "SoundResource::syncUnlock with " + this.counter);
      boolean rv = false;
      this.counter--;
      if (this.counter <= 0) {
         rv = true;
      }

      if (this.counter <= 0 && this.isShutdownTime) {
         this.counter = 1;
         this.isShutdownTime = false;
      }

      return rv;
   }

   public boolean isOK() {
      return !this.isShutdownTime;
   }
}