"handleChild(Arrive/Leave)() now only applies when a child is being placed under for the first time or actually leaving. added handleChild(Arrive/Leave)Zone() for the case where the child keeps the same parent, but changes zones"

direct/src/distributed/DistributedObject.py

@@ -451,30 +451,6 @@ class DistributedObject(DistributedObjectBase, EnforcesCalldowns):
         except AttributeError:
             return None
 
-    def handleChildArrive(self, childObj, zoneId):
-        self.notify.debugCall()
-        # A new child has just setLocation beneath us.  Give us a
-        # chance to run code when a new child sets location to us. For
-        # example, we may want to scene graph reparent the child to
-        # some subnode we own.
-        ## zone=self.children.setdefault(zoneId, {})
-        ## zone[childObj.doId]=childObj
-
-        # Inheritors should override
-        pass
-
-    def handleChildLeave(self, childObj, zoneId):
-        self.notify.debugCall()
-        # A child is about to setLocation away from us.  Give us a
-        # chance to run code just before a child sets location away from us.
-        ## zone=self.children[zoneId]
-        ## del zone[childObj.doId]
-        ## if not len(zone):
-        ##     del self.children[zoneId]
-
-        # Inheritors should override
-        pass
-
     def getParentObj(self):
         if self.parentId is None:
             return None

direct/src/distributed/DistributedObjectAI.py

@@ -232,30 +232,6 @@ class DistributedObjectAI(DistributedObjectBase, EnforcesCalldowns):
         except AttributeError:
             return None
 
-    def handleChildArrive(self, childObj, zoneId):
-        self.notify.debugCall()
-        # A new child has just setLocation beneath us.  Give us a
-        # chance to run code when a new child sets location to us. For
-        # example, we may want to scene graph reparent the child to
-        # some subnode we own.
-        ## zone=self.children.setdefault(zoneId, {})
-        ## zone[childObj.doId]=childObj
-
-        # Inheritors should override
-        pass
-
-    def handleChildLeave(self, childObj, zoneId):
-        self.notify.debugCall()
-        # A child is about to setLocation away from us.  Give us a
-        # chance to run code just before a child sets location away from us.
-        ## zone=self.children[zoneId]
-        ## del zone[childObj.doId]
-        ## if not len(zone):
-        ##     del self.children[zoneId]
-
-        # Inheritors should override
-        pass
-
     def postGenerateMessage(self):
         self.__generated = True
         messenger.send(self.uniqueName("generate"), [self])        

direct/src/distributed/DistributedObjectBase.py

@@ -43,26 +43,43 @@ class DistributedObjectBase(DirectObject):
             return None
 
     def handleChildArrive(self, childObj, zoneId):
+        """
+        A new child has just setLocation beneath us.  Give us a
+        chance to run code when a new child sets location to us. For
+        example, we may want to scene graph reparent the child to
+        some subnode we own.
+        """
         assert self.notify.debugCall()
-        # A new child has just setLocation beneath us.  Give us a
+        # Inheritors should override
-        # chance to run code when a new child sets location to us. For
+        pass
-        # example, we may want to scene graph reparent the child to
-        # some subnode we own.
-        ## zone=self.children.setdefault(zoneId, {})
-        ## zone[childObj.doId]=childObj
 
+    def handleChildArriveZone(self, childObj, zoneId):
+        """
+        A child has just changed zones beneath us with setLocation.
+        Give us a chance to run code when an existing child sets
+        location to us. For example, we may want to scene graph
+        reparent the child to some subnode we own.
+        """
+        assert self.notify.debugCall()
         # Inheritors should override
         pass
 
     def handleChildLeave(self, childObj, zoneId):
+        """
+        A child is about to setLocation away from us.  Give us a
+        chance to run code just before a child sets location away from us.
+        """
         assert self.notify.debugCall()
-        # A child is about to setLocation away from us.  Give us a
+        # Inheritors should override
-        # chance to run code just before a child sets location away from us.
+        pass
-        ## zone=self.children[zoneId]
-        ## del zone[childObj.doId]
-        ## if not len(zone):
-        ##     del self.children[zoneId]
 
+    def handleChildLeaveZone(self, childObj, zoneId):
+        """
+        A child is about to setLocation to another zone beneath us.
+        Give us a chance to run code just before a child sets
+        location to that zone.
+        """
+        assert self.notify.debugCall()
         # Inheritors should override
         pass
 

direct/src/distributed/DoCollectionManager.py

@@ -246,10 +246,20 @@ class DoCollectionManager:
     def storeObjectLocation(self, object, parentId, zoneId):
         oldParentId = object.parentId
         oldZoneId = object.zoneId
-        if (oldParentId != parentId) or (oldZoneId != zoneId):
+        if (oldParentId != parentId):
-            # Remove old location
+            # notify any existing parent that we're moving away
+            oldParentObj = self.doId2do.get(oldParentId)
+            if oldParentObj is not None:
+                oldParentObj.handleChildLeave(object, oldZoneId)
             self.deleteObjectLocation(object, oldParentId, oldZoneId)
-        elif oldParentId == parentId and oldZoneId == zoneId:
+            
+        elif (oldZoneId != zoneId):
+            # Remove old location
+            oldParentObj = self.doId2do.get(oldParentId)
+            if oldParentObj is not None:
+                oldParentObj.handleChildLeaveZone(object, oldZoneId)
+            self.deleteObjectLocation(object, oldParentId, oldZoneId)
+        else:
             # object is already at that parent and zone
             return
 
@@ -269,8 +279,7 @@ class DoCollectionManager:
             object.parentId = parentId
             object.zoneId = zoneId
 
-        if 1:
+
-            # Do we still need this
         if oldParentId != parentId:
             # Give the parent a chance to run code when a new child
             # sets location to it. For example, the parent may want to
@@ -281,19 +290,19 @@ class DoCollectionManager:
             elif parentId not in (0, self.getGameDoId()):
                 self.notify.warning('storeObjectLocation(%s): parent %s not present' %
                                     (object.doId, parentId))
+        elif oldZoneId != zoneId:
+            parentObj = self.doId2do.get(parentId)
+            if parentObj is not None:
+                parentObj.handleChildArriveZone(object, zoneId)
+            elif parentId not in (0, self.getGameDoId()):
+                self.notify.warning('storeObjectLocation(%s): parent %s not present' %
+                                    (object.doId, parentId))
             
     def deleteObjectLocation(self, object, parentId, zoneId):
         # Do not worry about null values
         if ((parentId is None) or (zoneId is None) or
             (parentId == zoneId == 0)):
             return
-        if 1:
-            # Do we still need this
-
-            # notify any existing parent that we're moving away
-            oldParentObj = self.doId2do.get(parentId)
-            if oldParentObj is not None:
-                oldParentObj.handleChildLeave(object, zoneId)
 
         self._doHierarchy.deleteObjectLocation(object, parentId, zoneId)
 
@@ -339,6 +348,12 @@ class DoCollectionManager:
         assert self.notify.debugStateCall(self)
         #assert not hasattr(do, "isQueryAllResponse") or not do.isQueryAllResponse
         #assert do.doId in self.doId2do
+        location = do.getLocation()
+        if location:
+           oldParentId, oldZoneId = location
+           oldParentObj = self.doId2do.get(oldParentId)
+           if oldParentObj:
+               oldParentObj.handleChildLeave(object, oldZoneId)
         self.deleteObjectLocation(do, do.parentId, do.zoneId)
         ## location = do.getLocation()
         ## if location is not None: