Implement "special games" game check for badge handling

inventory.py

@@ -455,10 +455,12 @@ class DropsCampaign:
                 channel is None or (  # channel isn't specified,
                     # or there's no ACL, or the channel is in the ACL
                     (not self.allowed_channels or channel in self.allowed_channels)
-                    # and the channel is live and playing the campaign's game
+                    # and the channel is live and playing the campaign's game,
+                    # or this campaign can be earned anywhere (special game)
                     and (
                         ignore_channel_status
                         or channel.game is not None and channel.game == self.game
+                        or self.game.is_special_events()
                     )
                 )
             )

twitch.py

@@ -981,16 +981,21 @@ class Twitch:
         """
         Determines if the given channel qualifies as a watching candidate.
         """
-        if not self.wanted_games:
-            return False
-        # exit early if stream is offline or drops aren't enabled
-        if not channel.online or not channel.drops_enabled:
-            return False
-        # check if we can progress any campaign for the played game
-        if channel.game is None or channel.game not in self.wanted_games:
+        # exit early if stream is offline
+        if not channel.online:
             return False
         for campaign in self.inventory:
-            if campaign.can_earn(channel):
+            if (
+                campaign.can_earn(channel)  # let the campaign do the "special games" check
+                and (
+                    # limit watching to the games the user wants
+                    channel.game is not None
+                    and channel.drops_enabled
+                    and channel.game in self.wanted_games
+                    # let the campaign ignore all channel-related checks
+                    or campaign.game.is_special_events()
+                )
+            ):
                 return True
         return False
 

utils.py

@@ -402,6 +402,8 @@ class AwaitableValue(Generic[_T]):
 
 
 class Game:
+    SPECIAL_EVENTS_GAME_ID: int = 509663
+
     def __init__(self, data: JsonType):
         self.id: int = int(data["id"])
         self.name: str = data.get("displayName") or data["name"]
@@ -434,3 +436,6 @@ class Game:
         # strip and collapse dashes
         slug_text = re.sub(r'-{2,}', '-', slug_text.strip('-'))
         return slug_text
+
+    def is_special_events(self) -> bool:
+        return self.id == self.SPECIAL_EVENTS_GAME_ID