Migrate. Added the "view" access restriction (to make objects invisible). Also changed the input of ObjectDB.objects.object_search() to not require a caller as an argument (this makes it consistent with other search methods). All default systems should have updated to the new call, but if you have custom calls, you need to change them to fit the new syntax (this is only important if explicitly use ObjectDB.objects.object_search; if you just use caller.search you should be fine)

src/objects/objects.py

@@ -62,6 +62,7 @@ class Object(TypeClass):
 
         self.locks.add("control:id(%s) or perm(Immortals)" % dbref)  # edit locks/permissions, delete
         self.locks.add("examine:perm(Builders)")  # examine properties 
+        self.locks.add("view:all()") # look at object (visibility)
         self.locks.add("edit:perm(Wizards)")   # edit properties/attributes 
         self.locks.add("delete:perm(Wizards)") # delete object 
         self.locks.add("get:all()")   # pick up object
@@ -185,7 +186,33 @@ class Object(TypeClass):
         source_location - where moved_object came from. 
         """
         pass
+
+
+    def at_before_traverse(self, traversing_object):
+        """
+        Called just before an object uses this object to 
+        traverse to another object (i.e. this object is a type of Exit)
         
+        The target location should normally be available as self.destination.
+        """
+        pass
+
+    def at_after_traverse(self, traversing_object, source_location):
+        """
+        Called just after an object successfully used this object to 
+        traverse to another object (i.e. this object is a type of Exit)
+        
+        The target location should normally be available as self.destination.
+        """
+        pass
+
+    def at_failed_traverse(self, traversing_object):
+        """
+        This is called if an object fails to traverse this object for some 
+        reason. It will not be called if the attribute err_traverse is defined,
+        that attribute will then be echoed back instead. 
+        """
+        pass 
 
     # hooks called by the default cmdset. 
     
@@ -414,3 +441,12 @@ class Exit(Object):
         """
         EXITHANDLER.clear(self.dbobj)
         return True 
+
+    def at_failed_traverse(self, traversing_object):
+        """
+        This is called if an object fails to traverse this object for some 
+        reason. It will not be called if the attribute "err_traverse" is defined,
+        that attribute will then be echoed back instead as a convenient shortcut. 
+        """
+        traversing_object.msg("You cannot enter %s." % self.key)
+