Gym leaders only drop badges if this data pack is active and both linked mods are present. Here is how to confirm everything is working before you start your gym run.
Confirm the Pack Is Enabled
1. Open your world and make sure cheats are allowed, or that you are an operator on a server.
2. Run /datapack list. The output shows enabled and available packs. This data pack should appear in the enabled list.
3. If it is listed as available but not enabled, enable it with /datapack enable followed by the pack's name exactly as shown in the list.
4. Run /reload after making changes so the game picks up the loot and advancement updates.
Check the Required Mods
- Radical Cobblemon Trainers provides the gym leaders you battle.
- PKGBadges provides the badge items that drop.
The data pack connects the loot tables of these two mods. If either one is missing, the drops will not work.
Single-Player vs. Server
- Single-player: the data pack belongs to that specific world. Other saves need their own copy.
- Multiplayer: data packs run on the server's world. Ask the server admin to add and enable the pack there.
Once everything is confirmed, challenge a gym leader you have never beaten. A badge should drop on the ground after your first win.