Doom 2, Heretic: fix missing items (Doom2 Megasphere, Heretic Torch) (#3561)

for doom 2, some of the armor and health weights were nudged down
to compensate for the addition of the megasphere

for heretic, the torch was just added without changing anything else,
as I felt doing so would negatively impact the distribution of
artifacts (and personally I already feel there's too few in a game)

worlds/doom_ii/__init__.py

@@ -60,17 +60,18 @@ class DOOM2World(World):
     # Item ratio that scales depending on episode count. These are the ratio for 3 episode. In DOOM1.
     # The ratio have been tweaked seem, and feel good.
     items_ratio: Dict[str, float] = {
-        "Armor": 41,
-        "Mega Armor": 25,
-        "Berserk": 12,
+        "Armor": 39,
+        "Mega Armor": 23,
+        "Berserk": 11,
         "Invulnerability": 10,
         "Partial invisibility": 18,
-        "Supercharge": 28,
+        "Supercharge": 26,
         "Medikit": 15,
         "Box of bullets": 13,
         "Box of rockets": 13,
         "Box of shotgun shells": 13,
-        "Energy cell pack": 10
+        "Energy cell pack": 10,
+        "Megasphere": 7
     }
 
     def __init__(self, multiworld: MultiWorld, player: int):
@@ -233,6 +234,7 @@ class DOOM2World(World):
         self.create_ratioed_items("Invulnerability", itempool)
         self.create_ratioed_items("Partial invisibility", itempool)
         self.create_ratioed_items("Supercharge", itempool)
+        self.create_ratioed_items("Megasphere", itempool)
 
         while len(itempool) < self.location_count:
             itempool.append(self.create_item(self.get_filler_item_name()))