[Battle] Help enabling mega evolutions

[pokefreak890]

Hello so I have wattson with a manetric holding a mega stone now my question is how do I enable mega evolutions for the trainers I don't recall seeing how to do it unless I might have skimmed passed it which is a possibility if anyone can help me that would be great

 

[Lunos]

Hello so I have wattson with a manetric holding a mega stone now my question is how do I enable mega evolutions for the trainers I don't recall seeing how to do it unless I might have skimmed passed it which is a possibility if anyone can help me that would be great

I just remembered about this thread and I thought I should quote my post in the battle_engine_v2's thread here.

First, you have to make sure to configure their trainerbattle correctly.
In their entry at src/data/trainers.h, give them the F_TRAINER_PARTY_HELD_ITEM party flag, and set their trainerbattle type to ItemCustomMoves, or any other that lets you configure a trainer's Pokémon's held item.
Then make sure to set that same trainerbattle type in the trainer's party entry at src/data/trainer_parties.h, and give them a Pokémon that can mega evolve (that is, a Pokémon that they can evolve into via the EVO_MEGA_EVOLUTION evolution method). Said Pokémon must be holding their mega stone too.

Once you've done that, just build a ROM and test it out.