AutoWorld: add spoiler hooks

Factorio: Move Recipes to new spoiler hooks

worlds/AutoWorld.py

@@ -1,5 +1,5 @@
 from __future__ import annotations
-from typing import Dict, Set, Tuple, List, Optional
+from typing import Dict, Set, Tuple, List, Optional, TextIO
 
 from BaseClasses import MultiWorld, Item, CollectionState, Location
 from Options import Option
@@ -172,6 +172,20 @@ class World(metaclass=AutoWorldRegister):
     def get_required_client_version(self) -> Tuple[int, int, int]:
         return 0, 1, 6
 
+    # Spoiler writing is optional, these may not get called.
+    def write_spoiler_header(self, spoiler_handle: TextIO):
+        """Write to the spoiler header. If individual it's right at the end of that player's options,
+        if as stage it's right under the common header before per-player options."""
+        pass
+
+    def write_spoiler(self, spoiler_handle: TextIO):
+        """Write to the spoiler "middle", this is after the per-player options and before locations,
+        meant for useful or interesting info."""
+        pass
+
+    def write_spoiler_end(self, spoiler_handle: TextIO):
+        """Write to the end of the spoiler"""
+        pass
     # end of ordered Main.py calls
 
     def collect_item(self, state: CollectionState, item: Item, remove: bool = False) -> Optional[str]:

worlds/factorio/__init__.py

@@ -167,6 +167,15 @@ class Factorio(World):
 
     options = factorio_options
 
+    @classmethod
+    def stage_write_spoiler(cls, world, spoiler_handle):
+        factorio_players = world.get_game_players(cls.game)
+        spoiler_handle.write('\n\nFactorio Recipes:\n')
+        for player in factorio_players:
+            name = world.get_player_name(player)
+            for recipe in world.worlds[player].custom_recipes.values():
+                spoiler_handle.write(f"\n{recipe.name} ({name}): {recipe.ingredients} -> {recipe.products}")
+
     def make_balanced_recipe(self, original: Recipe, pool: list, factor: float = 1) -> Recipe:
         """Generate a recipe from pool with time and cost similar to original * factor"""
         new_ingredients = {}