Various refinements and fixes to key logic and generation

DoorShuffle.py

@@ -1823,6 +1823,10 @@ def find_inaccessible_regions(world, player):
                 if connect.type is not RegionType.Dungeon or connect.name.endswith(' Portal'):
                     queue.append(connect)
     world.inaccessible_regions[player].extend([r.name for r in all_regions.difference(visited_regions) if valid_inaccessible_region(r)])
+    if world.mode[player] == 'inverted':
+        ledge = world.get_region('Hyrule Castle Ledge', 1)
+        if any(x for x in ledge.exits if x.connected_region.name == 'Agahnims Tower Portal'):
+            world.inaccessible_regions[player].append('Hyrule Castle Ledge')
     logger = logging.getLogger('')
     logger.debug('Inaccessible Regions:')
     for r in world.inaccessible_regions[player]: