ROM Hack [Release] RomFS Builder

[SciresM]

I saw the lack of a good RomFS Builder as a problem, so I made this thing.

It's very, very simple.

Open a folder using the Open button, then hit Go. The program will then generate a RomFS binary.

When it's done, it'll prompt you to save the binary with a file name of your choice.

Source Code is available here: https://github.com/SciresM/RomFS-Builder

And you can download it here: https://github.com/SciresM/RomFS-Builder/releases

 

[Reisyukaku]

Well I guess i cant make fun of your programming skills anymore lol.. looks good!

 

[SciresM]

*snip*


The primary utility is that it's going to be implemented in pk3DS to enable Romfs building in addition to Exefs building, and also to serve as part of an NCCH builder I'm working on for X/Y/OR/AS that doesn't require an RSF.

Also:
-It's faster than ctr_makerom32 (nintendo sdk program).
-It's easier to use than ctr_makerom32 or Makerom.
-It's written in C#.

 

[Huntereb]

The primary utility is that it's going to be implemented in pk3DS to enable Romfs building in addition to Exefs building, and also to serve as part of an NCCH builder I'm working on for X/Y/OR/AS that doesn't require an RSF.

Also:
-It's faster than ctr_makerom32 (nintendo sdk program).
-It's easier to use than ctr_makerom32 or Makerom.
-It's written in C#.

Aw you're no fun.

 

[liomajor]

Could you add another line for storing romfs instead asking where to save it?

Example:

 

[Apache Thunder]

*snip*


The primary utility is that it's going to be implemented in pk3DS to enable Romfs building in addition to Exefs building, and also to serve as part of an NCCH builder I'm working on for X/Y/OR/AS that doesn't require an RSF.

Also:
-It's faster than ctr_makerom32 (nintendo sdk program).
-It's easier to use than ctr_makerom32 or Makerom.
-It's written in C#.

Wait....PK3DS will have the ability to build changes into a new 3DS/CIA file? (provided all needed files are given to it) If that is true, you have become God/Arceus of Pokemon rom hacking.

Maybe I won't have to worry about needing the game patch since I can ditch the buggy RSF file I have for it. (Game patch overrides certain rom content like game text for example) Currently the RSF file I have results in the rom not booting without the game patch. A problem that seems to be widespread I think.

 

[Reisyukaku]

Wait....PK3DS will have the ability to build changes into a new 3DS/CIA file? (provided all needed files are given to it) If that is true, you have become God/Arceus of Pokemon rom hacking.

Maybe I won't have to worry about needing the game patch since I can ditch the buggy RSF file I have for it. (Game patch overrides certain rom content like game text for example) Currently the RSF file I have results in the rom not booting without the game patch. A problem that seems to be widespread I think.

Nah, its not a patch thing (but that is a possibility) but with this you can built romfs, and with pk3ds you can build exefs.. then you just need your exheader and there you go.. no need for rsf and you can build a rom with those.

 

[SciresM]

Wait....PK3DS will have the ability to build changes into a new 3DS/CIA file? (provided all needed files are given to it) If that is true, you have become God/Arceus of Pokemon rom hacking.

Maybe I won't have to worry about needing the game patch since I can ditch the buggy RSF file I have for it. (Game patch overrides certain rom content like game text for example) Currently the RSF file I have results in the rom not booting without the game patch. A problem that seems to be widespread I think.

I am under the impression that the "endgame" goal is to be able to take in a romfs/exefs/exheader with pk3DS and spit out a .3ds (.cia I guess, I'll need to look up how that works).

I could be wrong?

 

[Apache Thunder]

CIA is not a desirable format for gen 6 pokemon games. I heard there's issue with using SaveDataFiler on them due to anti save swapping code or something.

So CIAs of them isn't as important. Perhaps editing an existing repacked/decrypted rom is a more realistic goal.

 

[SciresM]

CIA is not a desirable format for gen 6 pokemon games. I heard there's issue with using SaveDataFiler on them due to anti save swapping code or something.

So CIAs of them isn't as important. Perhaps editing an existing repacked/decrypted rom is a more realistic goal.

Right. .3DS generation with no need for rsf based on exheader+romfs+exefs is, I believe, the current goal.

 

[hackotedelaplaqu]

Very appreciated.
Congrats and thanks.

 

[Deleted User]

Nice. Might need to use this later. I don't know, though. I don't really do 3DS ROM hacking, but people have been wondering if I'll be able to help with Ace Attorney: Dual Destinies translations, so.... Maybe?

 

[Asia81]

thanks, very useful

 

[gamesquest1]

doesnt seem to work for NSMB2...will be good once there is a fully working alternative to ctr_makerom, good work anyway

 

[Nic333]

CIA is not a desirable format for gen 6 pokemon games. I heard there's issue with using SaveDataFiler on them due to anti save swapping code or something.

So CIAs of them isn't as important. Perhaps editing an existing repacked/decrypted rom is a more realistic goal.

You can fix your savegame using some hex editing, get your securevault from the savedatafiler and overwrite the old one with the new one on an random hex editor

 

[alejakaiser]

I think something was wrong with the RomFS Builder 1.0...

25,4GB?

 

[Apache Thunder]

The dialog used to navigate to the folder one wants to build is very cumbersome to use. I have to manually navigate it to the folder every time. If it used the normal file open dialog, I can just cut and paste the folder path in to get to the location I have the folder in quickly. My RomFS folder is nested 5+ directories deep and navigating to it everytime I want to build the RomFS is a real time eater for me.

This would be one of my top suggestions for this if you are still working on it.

 

[SciresM]

Some news -- I finally finished updating this.

In the first release, it didn't generate the Hash Tables used to verify paths properly -- this meant some games were incompatible (like NSMB2).

I've finished fixing this today -- Hash Tables should be perfectly accurate now, and so all games should be compatible with it.

Download link to the new release is still found at my GitHub: https://github.com/SciresM/RomFS-Builder/releases

 

[DarkFlare69]

Now all we need is a good ROM builder! Nice work.

 

[hippy dave]

Thanks for this. It appears to work fine under OS X using Mono.