Let observers know when we attempt to switch zones as well as when we

succeed or fail in those attempts.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@824 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/whirled/zone/client/ZoneDirector.java

@@ -1,5 +1,5 @@
 //
-// $Id: ZoneDirector.java,v 1.3 2001/12/17 04:00:27 mdb Exp $
+// $Id: ZoneDirector.java,v 1.4 2001/12/17 04:11:40 mdb Exp $
 
 package com.threerings.whirled.zone.client;
 
@@ -82,6 +82,10 @@ public class ZoneDirector
                 return;
             }
 
+            // let our zone observers know that we're attempting to switch
+            // zones
+            notifyObservers(new Integer(zoneId));
+
             // check the version of our cached copy of the scene to which
             // we're requesting to move; if we were unable to load it, assume
             // a cached version of zero
@@ -155,7 +159,9 @@ public class ZoneDirector
         for (int i = 0; i < _observers.size(); i++) {
             ZoneObserver obs = (ZoneObserver)_observers.get(i);
             try {
-                if (data instanceof ZoneSummary) {
+                if (data instanceof Integer) {
+                    obs.zoneWillChange(((Integer)data).intValue());
+                } else if (data instanceof ZoneSummary) {
                     obs.zoneDidChange((ZoneSummary)data);
                 } else {
                     obs.zoneChangeFailed((String)data);

src/java/com/threerings/whirled/zone/client/ZoneObserver.java

@@ -1,5 +1,5 @@
 //
-// $Id: ZoneObserver.java,v 1.1 2001/12/17 04:00:27 mdb Exp $
+// $Id: ZoneObserver.java,v 1.2 2001/12/17 04:11:40 mdb Exp $
 
 package com.threerings.whirled.zone.client;
 
@@ -11,6 +11,16 @@ import com.threerings.whirled.zone.data.ZoneSummary;
  */
 public interface ZoneObserver
 {
+    /**
+     * Called when we begin the process of switching to a new zone. This
+     * will be followed by a call to {@link #zoneDidChange} to indicate
+     * that the change was successful or {@link #zoneChangeFailed} if the
+     * change fails.
+     *
+     * @param zoneId the zone id of the zone to which we are changing.
+     */
+    public void zoneWillChange (int zoneId);
+
     /**
      * Called when we have switched to a new zone.
      *