Potential stair key door fix

DoorShuffle.py

@@ -1000,7 +1000,10 @@ def reassign_key_doors(current_doors, proposal, world, player):
             if room.doorList[d.doorListPos][1] == DoorKind.StairKeyLow:
                 room.delete(d.doorListPos)
             else:
-                room.change(d.doorListPos, DoorKind.Waterfall)
+                if len(room.doorList) > 1:
+                    room.mirror(d.doorListPos)
+                else:
+                    room.delete(d.doorListPos)
             d.smallKey = False
         elif d.type is DoorType.Interior and d not in flat_proposal and d.dest not in flat_proposal:
             world.get_room(d.roomIndex, player).change(d.doorListPos, DoorKind.Normal)

RoomData.py

@@ -257,6 +257,16 @@ class Room(object):
         self.doorList[list_idx] = (prev[0], kind)
         self.modified = True
 
+    def mirror(self, list_idx):
+        prev = self.doorList[list_idx]
+        mirror_door = None
+        for door in self.doorList:
+            if door != prev:
+                mirror_door = door
+                break
+        self.doorList[list_idx] = (mirror_door[0], mirror_door[1])
+        self.modified = True
+
     def swap(self, idx1, idx2):
         item1 = self.doorList[idx1]
         item2 = self.doorList[idx2]