Converting MBAC files to OBJ

[Durik256]

Hi, help me, I’ve been looking for information about editing ".mbac" for the third day now, all I found was exporting ".bac / .tra" to 3ds max, and converting them to ".mbac / .mtra" and viewing them but there is no reverse process, or at least conversion to ".obj". And I saw "tool / mbac2obj.py" with you, but I don’t understand how to use it, opening it gives an error in the blender, could you write a brief import instruction let's say "moodel.mbac" in a blender ???? thanks for earlier (my brains have already melted ...)

[minexew]

Do you have any experience with running Python programs? The utilities in this repository require a certain proficiency with the command line, they are not really targeted towards the "general public".

[Durik256]

Do you have any experience with running Python programs? The utilities in this repository require a certain proficiency with the command line, they are not really targeted towards the "general public".

I need a very brief instruction, I can handle it)

[minexew]

Assuming you're on Windows:

• installed latest version of Python (default options should be fine)
• open the command line
• use the CD command to navigate to the directory where you have downloaded mbac2obj.py (but download the entire repository, other files are needed by the script)
• execute python mbac2obj.py <mbacpath> converted.obj
  (substitute <mbacpath> with the full path to your model file)
• if you are lucky and get no error, "converted.obj" will be generated next to the script, and you can load it into blender normally
• keep in mind that textures need to be matched manually, since the MBAC file does not contain any info about them

[Durik256]

Thanks a lot, everything turned out, I made a GUI shell for windows(https://github.com/Durik256/MBAC-to-OBJ).
converts a little wrong(flip polygon and incorrect UV);
"https://i.ibb.co/vwpHpMS/export.png"
And through your scripts, can you convert .mbac and .mtra to fbx?
many files are not converted :(

[minexew]

Thanks a lot, everything turned out, I made a GUI shell for windows

Glad that you got it sorted out, and nice work on the tool!

converts a little wrong(flip polygon and incorrect UV);

Ok, this is interesting! If you can send me the MBAC + texture, I will look into this. Perhaps there is some UV scaling necessary that is hard-coded somewhere outside the mbac file?

And through your scripts, can you convert .mbac and .mtra to fbx?

I'm afraid not, for one because FBX is not an open format, but also because we haven't cracked MTRA yet, I believe we have an MTRA parser, but it only outputs a textual description.

many files are not converted :(

If you tell me more about what the issue is, I can investigate.

[Durik256]

here is the link to the jar game : "https://drive.google.com/open?id=1RjBxe-r_Oj1DBZMMv0J-R17rk5-lpwDH" Many models cannot be converted from this game, including character models (pers_killer.mbac, etc.)! The model that incorrectly converted (UAZ1_00.mbac ant tx: t1.bmp). Thanks for answers)))

[minexew]

In the meantime, I'd recommend looking into this release instead: https://drive.google.com/open?id=1FqefgZKaK5qee14vx0-z0FIC9FzOTyb_; while targeting 176x220 instead of 240x320, it actually has textures in higher resolution (256x256) and no carrier branding. This is the one that I am working on and it seems we will be able to decode all the models and match textures.

[Durik256]

All the same, does not convert all models))

[minexew]

I have updated the scripts today, you can try again.
Also have a look here: https://minexew.github.io/mbac-gallery/Stalker.html (not all models are textured, because at the moment I have to do the assignment one by one)

[Durik256]

everything works, cool)))

[minexew]

Great. I still haven't decided how to systematically deal with the model rotation (since it doesn't affect other games that I tested)
Also, if you can provide me with more model<->texture mappings, I will incorporate them and re-render the gallery. Eventually, I'd like to include other games as well.

[Durik256]

All model and texture https://drive.google.com/open?id=1LnMA9AIzWr5G3bU4VhrjaoL8fxobOgld

[minexew]

Cool, I guess I can extract texture names from the .mtl files?
(since what I really need are just the MBAC<->BMP pairings)

[minexew]

I have updated the gallery with your texture mappings and corrected model coordinate system.

[Durik256]

excellent work) in the models that I sent you, the coordinate system is also fixed)

[minexew]

I believe this is now resolved! :)

[minexew]

FWIW, this is the code I used to extract the texture names: https://gist.github.com/minexew/480984467fa374335581b6d833fb3817