Fail requests to move to the location a client already occupies.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@225 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/crowd/server/LocationProvider.java

@@ -1,5 +1,5 @@
 //
-// $Id: LocationProvider.java,v 1.4 2001/08/11 00:22:55 mdb Exp $
+// $Id: LocationProvider.java,v 1.5 2001/08/11 02:07:20 mdb Exp $
 
 package com.threerings.cocktail.party.server;
 
@@ -58,6 +58,12 @@ public class LocationProvider extends InvocationProvider
             return "m.move_in_progress";
         }
 
+        // make sure they're not already in the location they're asking to
+        // move to
+        if (source.location == placeId) {
+            return "m.already_there";
+        }
+
         // find out if they were previously in some other location
         if (source.location != -1) {
             // remove them from the occupant list of the previous location