Add Zone handling to vilya's actionscript side to go with scene handling. Also, handle SceneDirector's forcedMove in the same way the java side does in the face of already pending moves.

git-svn-id: svn+ssh://src.earth.threerings.net/vilya/trunk@910 c613c5cb-e716-0410-b11b-feb51c14d237

src/as/com/threerings/whirled/client/SceneDirector.as

@@ -173,7 +173,7 @@ public class SceneDirector extends BasicDirector
         var refuse :Boolean = _locdir.checkRepeatMove();
 
         // complain if we're over-writing a pending request
-        if (_pendingData != null) {
+        if (movePending()) {
             if (refuse) {
                 log.warning("Refusing moveTo; We have a request outstanding",
                     "psid", _pendingData.sceneId, "nsid", sceneId);
@@ -383,9 +383,26 @@ public class SceneDirector extends BasicDirector
         clearScene();
     }
 
+    /**
+     * Returns true if there is a pending move request.
+     */
+    public function movePending () :Boolean
+    {
+        return (_pendingData != null);
+    }
+
     // documentation inherited from interface
     public function forcedMove (sceneId :int) :void
     {
+        // if we're in the middle of a move, we can't abort it or we will screw everything up, so
+        // just finish up what we're doing and assume that the repeated move request was the
+        // spurious one as it would be in the case of lag causing rapid-fire repeat requests
+        if (movePending()) {
+            log.info("Dropping forced move because we have a move pending",
+                "pendId", _pendingData.sceneId, "reqId", sceneId);
+            return;
+        }
+
         log.info("Moving at request of server", "sceneId", sceneId);
 
         // clear out our old scene and place data