itch.io

Usually my support isn't that quick, I only check my itchio messages once per day... you just got lucky and posted that thing just a couple minutes before I happened to log in, gg :P

For evolution moves, it's going to be a bit messier since I didn't consider it when making the engine, but here's my idea:

In obj_evolutioncontrol, at line 73, add some extra code that checks if the newly evolved species (targevo) has any innate moves learned at level NONE. (Those are the moves they always know regardless of level). If there's any, attempt to learn them. The code of obj_battlecontrol's step event case 32 which handles newly learned moves (around line 1010) should be a good starting point for this new code (alongside with the code that sets the movelearn queue around line 997). It might be easier to add a new state to the evolution control's step event than trying to cram all this into case 20 where it waits for the menu objects to be done, just like how battle control uses one state to populate a queue and another state to read the next entry from the queue until it's empty.

With this system in place, you can define new moves learned on-evolution by adding innate moves to the evolved monsters which are learned on level NONE.

If you think the "level NONE" thing is a bit hacky and you want to fully separate always-known moves from on-evolution moves, add a new constant ON_EVO which is a value higher than your max level (e.g. 1000) and check for moves learned on that level in the evolution control instead of moves learned at level NONE. These moves can't be learned through levelling up, since the monster can't reach past the max level, so only the special case in the evolution control will do anything with the data.