DarkGaia

Use Unity Asset Bundle Extractor Avalonia to dump the raw files. Then you can edit them using any text editor and import them as raw files using UABEA. Use this list to determine the IDs of the trainers: BDSP Trainer Data - Google Sheets You can look up move, nature and ability IDs on Bulbapedia.

Yeah, PkNX or whatever equivalent tool Kaphotics and the others cook up will be a god send. It took me about a week to edit all of the trainers, and I still haven't touched anything in the post game or any of the rematches! I figure once the tools come out and trainers and wild encounters are much less of a hassle people will have more time to look into my dex problem so I look forward to it!

Changing the trainer rosters is pretty easy. You can find them in Dpr/masterdatas/TrainerTable. Be prepared to spend a lot of time on it though, it's quite tedious without a tool like PkNX!

Editing Rowan and his aide or changing the number of mons needed to get the National Dex wouldn't be too hard I imagine. Most of the game's scripts are easily accessible in the Dpr folder and the scripting language is fairly similar to that used in Gen 4. The main problem is editing the actual dex itself so it actually shows any replaced or added Pokemon. I've looked almost everywhere in UABEA and can't seem to find it. Back in the DS days all of this info was stored in one file and so it was a matter of just changing the order of the index numbers or adding new ones. But so far in BDSP I haven't been able to find the equivalent file, and despite being able to successfully change the dex numbers of individual mons I can't actually have the Pokedex screen itself reflect those changes. This would obviously be important for a Platinum mod as you said. Right now I've even been able to mod the gym leaders and E4 to have their Platinum teams, but it would be nice if seeing these teams would contribute to dex completion.

First off, please accept my apologies I've posted this in the wrong forum. I wasn't really sure whether this counts as research or discussion. One thing that really bugs me about BDSP is how any Pokemon not part of the original D/P 151, for example any rare spawns you catch in the Underground, have a dex number of ??? until you get the National Dex. I've been tinkering with the game's assets, and I'm trying to see if it is possible to add or remove mons from the Sinnoh dex as a way of getting around this. So far, I've made some progress, but I keep running into a brick wall. In AssetHelper/Pml/personal_masterdatas/PersonalTable, each Pokemon has an entry (chihou_zukan_no) which you can edit to change their dex number in the Sinnoh regional dex. By default, everything outside the regional dex has this set as -1. In theory, you could swap some mons into the Sinnoh dex by setting this number to whichever number you wish, and then remove mons by setting their number to -1. By doing this, I've been able to give some Underground Pokemon dex numbers. For example, in the picture below, I've replaced Happiny with Togepi by setting Happiny's number to -1 and Togepi's to 96. The problem is that even though Togepi is now Sinnoh Pokemon 96, in the actual Pokedex it doesn't appear. On the Pokedex screen, slot 96 is unrevealed, presumably still held by Happiny. I'm presuming there's a separate file that handles which Pokemon should be displayed on the dex screen. Does anyone have any ideas?

Thanks for the info! At least there are plenty of ways to mod Unity games these days so even if whatever tool you wonderful people cook up isn't quite as user-friendly as we've come to expect there's already a lot of knowledge out there that people can make use of if they have to. Thank you for all the hard work!

With BDSP being made in the Unity engine, should we expect pkNX to eventually work with it? Or is the structure so different that a romhacking/randomization tool such as this is not really possible? I'm looking forward to being able to mod the game to add Platinum teams and encounters.