Since rendering the sprite itself isn't good enough to trigger the scene to re-render, let's directly check whether we've updated the sprites and if any have, we'll rerender the object IsoScene

git-svn-id: svn+ssh://src.earth.threerings.net/vilya/trunk@959 c613c5cb-e716-0410-b11b-feb51c14d237

src/as/com/threerings/stage/client/CharacterIsoSprite.as

@@ -57,8 +57,6 @@ public class CharacterIsoSprite extends IsoSprite
         _character = charSprite;
 
         sprites = [wrapper];
-
-        autoUpdate = true;
     }
 
     public function tick (tickStamp :int) :void

src/as/com/threerings/stage/client/CrowdStageScenePanel.as

@@ -93,9 +93,16 @@ public class CrowdStageScenePanel extends StageScenePanel
     override public function tick (tickStamp :int) :void
     {
         super.tick(tickStamp);
+        var shouldRender :Boolean = false;
         _sprites.forEach(function (key :int, sprite :CharacterIsoSprite) :void {
             sprite.tick(tickStamp);
+            shouldRender ||= sprite.isInvalidated;
         });
+
+        // TODO - partial scene rerenders would be useful here...
+        if (shouldRender) {
+            _objScene.render();
+        }
     }
 
     protected function updateDisplayForScene () :void