Core: provide a way to add to CollectionState init and copy

SM: use that way
OoT: use that way

worlds/AutoWorld.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import logging
-from typing import Dict, Set, Tuple, List, Optional, TextIO, Any
+from typing import Dict, Set, Tuple, List, Optional, TextIO, Any, Callable
 
 from BaseClasses import MultiWorld, Item, CollectionState, Location
 from Options import Option
@@ -35,8 +35,13 @@ class AutoWorldRegister(type):
 class AutoLogicRegister(type):
     def __new__(cls, name, bases, dct):
         new_class = super().__new__(cls, name, bases, dct)
+        function: Callable
         for item_name, function in dct.items():
-            if not item_name.startswith("__"):
+            if item_name == "copy_mixin":
+                CollectionState.additional_copy_functions.append(function)
+            elif item_name == "init_mixin":
+                CollectionState.additional_init_functions.append(function)
+            elif not item_name.startswith("__"):
                 if hasattr(CollectionState, item_name):
                     raise Exception(f"Name conflict on Logic Mixin {name} trying to overwrite {item_name}")
                 setattr(CollectionState, item_name, function)
@@ -193,6 +198,7 @@ class World(metaclass=AutoWorldRegister):
     def write_spoiler_end(self, spoiler_handle: TextIO):
         """Write to the end of the spoiler"""
         pass
+
     # end of ordered Main.py calls
 
     def create_item(self, name: str) -> Item:
@@ -240,7 +246,6 @@ class World(metaclass=AutoWorldRegister):
         self.world.itempool.append(self.create_item(self.get_filler_item_name()))
 
 
-
 # any methods attached to this can be used as part of CollectionState,
 # please use a prefix as all of them get clobbered together
 class LogicMixin(metaclass=AutoLogicRegister):