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[Guest]

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Edited March 11 by AlphaTwentyThree
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[ikskoks]

It's known format used by many GameMaker Studio games.

You can edit archive with UndertaleModTool https://github.com/UnderminersTeam/UndertaleModTool/releases/tag/bleeding-edge

 

[Guest]

23 hours ago, ikskoks said:

It's known format used by many GameMaker Studio games.

You can edit archive with UndertaleModTool https://github.com/UnderminersTeam/UndertaleModTool/releases/tag/bleeding-edge

 

Thanks for the info - that's at least a start for some research.

Sadly, the tool doesn't work correctly for this particular archive though as you can see:

I'll look around in the source code, maybe it gives me some idea as to how the format is structured.

[ikskoks]

UndertaleModTools seems to be most powerful of all the WIN tools, but you can try other tools as well:

* https://github.com/PoroCYon/Altar.NET
* https://github.com/panzi/cook-serve-hoomans
* https://sourceforge.net/projects/game-maker-editor/
* https://github.com/ryohey/gmspack
* https://github.com/puggsoy/GMS-Explorer
* https://github.com/krzys-h/UndertaleModTool
* https://github.com/fjay69/UndertaleTools

There's also this quickbms script:

* http://aluigi.altervista.org/bms/yoyogames.bms


You can also check those articles for more info:

* https://github.com/panzi/cook-serve-hoomans/blob/master/fileformat.md
* https://github.com/krzys-h/UndertaleModTool/wiki/Corrections-to-GameMaker-Studio-1.4-data.win-format-and-VM-bytecode,-.yydebug-format-and-debugger-instructions