OOT: Fix incorrect region accessibility after update_reachable_regions() (#3712)

`CollectionState.update_reachable_regions()` un-stales the state for all
players, but when checking `OOTRegion.can_reach()`, it would only update
OOT's age region accessibility when the state was stale, so if the state
was always un-staled by `update_reachable_regions()` immediately before
`OOTRegion.can_reach()`, OOT's age region accessibility would never
update.

This patch fixes the issue by replacing use of CollectionState.stale
with a separate stale state dictionary specific to OOT that is only
un-staled by `_oot_update_age_reachable_regions()`.

OOT's collect() and remove() implementations have been updated to stale
the new OOT-specific state.

worlds/oot/Regions.py

@@ -64,7 +64,7 @@ class OOTRegion(Region):
             return None
 
     def can_reach(self, state):
-        if state.stale[self.player]:
+        if state._oot_stale[self.player]:
             stored_age = state.age[self.player]
             state._oot_update_age_reachable_regions(self.player)
             state.age[self.player] = stored_age

worlds/oot/Rules.py

@@ -8,12 +8,17 @@ from .Hints import HintArea
 from .Items import oot_is_item_of_type
 from .LocationList import dungeon_song_locations
 
-from BaseClasses import CollectionState
+from BaseClasses import CollectionState, MultiWorld
 from worlds.generic.Rules import set_rule, add_rule, add_item_rule, forbid_item
 from ..AutoWorld import LogicMixin
 
 
 class OOTLogic(LogicMixin):
+    def init_mixin(self, parent: MultiWorld):
+        # Separate stale state for OOTRegion.can_reach() to use because CollectionState.update_reachable_regions() sets
+        # `self.state[player] = False` for all players without updating OOT's age region accessibility.
+        self._oot_stale = {player: True for player, world in parent.worlds.items()
+                           if parent.worlds[player].game == "Ocarina of Time"}
 
     def _oot_has_stones(self, count, player): 
         return self.has_group("stones", player, count)
@@ -93,7 +98,7 @@ class OOTLogic(LogicMixin):
 
     # Store the age before calling this!
     def _oot_update_age_reachable_regions(self, player):
-        self.stale[player] = False
+        self._oot_stale[player] = False
         for age in ['child', 'adult']:
             self.age[player] = age
             rrp = getattr(self, f'{age}_reachable_regions')[player]

worlds/oot/__init__.py

@@ -1301,6 +1301,7 @@ class OOTWorld(World):
     # the appropriate number of keys in the collection state when they are
     # picked up.
     def collect(self, state: CollectionState, item: OOTItem) -> bool:
+        state._oot_stale[self.player] = True
         if item.advancement and item.special and item.special.get('alias', False):
             alt_item_name, count = item.special.get('alias')
             state.prog_items[self.player][alt_item_name] += count
@@ -1313,8 +1314,12 @@ class OOTWorld(World):
             state.prog_items[self.player][alt_item_name] -= count
             if state.prog_items[self.player][alt_item_name] < 1:
                 del (state.prog_items[self.player][alt_item_name])
+            state._oot_stale[self.player] = True
             return True
-        return super().remove(state, item)
+        changed = super().remove(state, item)
+        if changed:
+            state._oot_stale[self.player] = True
+        return changed
 
 
     # Helper functions
@@ -1389,7 +1394,7 @@ class OOTWorld(World):
         # If free_scarecrow give Scarecrow Song
         if self.free_scarecrow:
             all_state.collect(self.create_item("Scarecrow Song"), prevent_sweep=True)
-        all_state.stale[self.player] = True
+        all_state._oot_stale[self.player] = True
 
         return all_state