tested and implemented clone() in StoneTray

git-svn-id: svn://sunsvr01.isp.uni-luebeck.de/swproj13/trunk@84 72836036-5685-4462-b002-a69064685172

src/jrummikub/model/StoneTray.java

@@ -209,11 +209,16 @@ public class StoneTray<E extends Sizeable> implements
 		};
 	}
 
-	/**
-	 * @param object
-	 */
 	public void pickUp(E object) {
 		objects.remove(object);
 	}
+	
+	
+	@Override
+	public StoneTray<E> clone() {
+		StoneTray<E> copy = new StoneTray();
+		copy.objects = (HashMap<E, Position>) objects.clone();
+		return copy;
+	}
 
 }