[Battle] Forcing a specific level for pokemon when battling

I'm trying to implement a feature where there is an "effective level" cap, meaning you can continue to level your pokemon up past that number, but when you're in a battle your pokemon are locked to that level (meaning their stats are also calculated for that level). Anyone know how I might go about doing this?
What I'm hoping is that somewhere there's a function that loads the player's party into a temporary variable, and I can just force those values before the battle itself starts referencing them, but at this point I'm starting to suspect that middle step doesn't exist.

This ended up being a pretty complex one, but I thought I'd share my findings.
- CopyPlayerMonData in src/battle_controller_player.c does most of the heavy lifting, loading in the stats
- In order to recalculate these stats at the capped level, I had to create some new functions to recreate the stat calculation done in CalculateMonStats and CALC_STAT in src/pokemon.c
- I had to use these new functions in src/battle_interface.c as well, in the UpdateHealthboxAttribute function, and in PlayerHandleHealthBarUpdate in src/battle_controller_player.c
- I also put an extra check in case 4 of Cmd_getexp in src/battle_script_commands to make sure that a leveled-up pokemon wasn't above the level cap before recalculating their stats (which I'm not 100% sure is working since the current HP still increases)

There's probably an absolute stack of bugs with this system. I'll work my way through and see what I find.