v0.9.2b: simplified thread coordination to reduce deadlock risk

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/Actor.java

@@ -26,7 +26,6 @@ import com.shatteredpixel.shatteredpixeldungeon.Statistics;
 import com.shatteredpixel.shatteredpixeldungeon.actors.blobs.Blob;
 import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Buff;
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
-import com.shatteredpixel.shatteredpixeldungeon.scenes.GameScene;
 import com.watabou.utils.Bundlable;
 import com.watabou.utils.Bundle;
 import com.watabou.utils.SparseArray;
@@ -284,10 +283,8 @@ public abstract class Actor implements Bundlable {
 						interrupted = false;
 					}
 
-					synchronized (GameScene.class){
 					//signals to the gamescene that actor processing is finished for now
-						GameScene.class.notify();
+					Thread.currentThread().notify();
-					}
 					
 					try {
 						Thread.currentThread().wait();

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/scenes/GameScene.java

@@ -555,23 +555,19 @@ public class GameScene extends PixelScene {
 	}
 
 	public boolean waitForActorThread(int msToWait ){
-		synchronized (GameScene.class) {
 		if (actorThread == null || !actorThread.isAlive()) {
 			return true;
 		}
 		synchronized (actorThread) {
 			actorThread.interrupt();
-			}
 			try {
-				GameScene.class.wait(msToWait);
+				actorThread.wait(msToWait);
 			} catch (InterruptedException e) {
 				ShatteredPixelDungeon.reportException(e);
 			}
-			synchronized (actorThread) {
 			return !Actor.processing();
 		}
 	}
-	}
 	
 	@Override
 	public synchronized void onPause() {