Fix minor bugs

commands/hint.py

@@ -52,7 +52,10 @@ class CmdHint(MuxCommand):
 
         data = self.hint_data()
         if data:
-            room_hints = data[room_key]
+            room_hints = data.get(room_key)
+            if not room_hints:
+                return "<< Sorry, the hint system for this area has not been created, yet. >>"
+
             narrative = room_hints.get('narrative')
             hints = room_hints['hints']
 

typeclasses/characters.py

@@ -129,6 +129,7 @@ class Character(Object, GenderCharacter, ContribRPCharacter):
         self.db.jumped_times = 0
         self.db.tutorstate = 0
         self.db.thrown_times = 0
+        self.db.knocker_conversation_state = None
         TutorBird.do_start_tutorial(self)
         self.msg(INTRO)
 

typeclasses/drinkables.py

@@ -163,7 +163,7 @@ class Container(Object):
 
         The containers description will match the contents.
         """
-        if self.db.amount > 0:
+        if (self.db.amount or 0) > 0:
             already_full = True
         else:
             already_full = False