--- a/gamestate.py	Fri Sep 09 15:30:23 2011 +0200
+++ b/gamestate.py	Fri Sep 09 15:47:43 2011 +0200
@@ -25,6 +25,7 @@
         self.object_ids = {}
         self.current_map_name = None
         self.maps = {}
+        self.npcs_met = set()
         
         
     def addObject(self, map_id, game_object):
@@ -121,4 +122,20 @@
         self.current_map_name = state["CurrentMap"]
         self.quest_engine.readQuests()
         self.quest_engine.restoreFromState(state["Quests"])
-        
+
+    def meet(self, npc):
+        """Record that the PC has met a certain NPC
+           @type npc: str
+           @param npc: The NPC's name or id"""
+        if npc in self.npcs_met:
+            # we could raise an error here, but should probably be a warn
+            # raise RuntimeError("I already know %s" % npc)
+            return
+        self.npcs_met.add(npc)
+
+    def met(self, npc):
+        """Indicate whether the PC has met this npc before
+           @type npc: str
+           @param npc: The NPC's name or id
+           @return: None"""
+        return npc in self.npcs_met