Here are the important files and folders in a Paper Mario DX mod.
- README.md
Directoryassets
Directorymod Where you will place your mod's assets
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Directorydx Assets provided by DX (do not edit)
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Directoryus Assets dumped from the baserom (do not edit)
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Directoryinclude C headers
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Directorysrc C code
Directorydx
- config.h Mod configuration
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- … Other files/folders are internal to DX
The assets folder
The assets folder contains game content (not engine code).
It has a layered approach where assets/mod/ takes priority over assets/dx/, which takes priority over assets/us/. For example, the file assets/us/msg/0C_Chapter1.msg can be overridden by creating a file at assets/mod/msg/0C_Chapter1.msg. You can create the msg folder if it doesn't exist.
The src and include folders
These folders contain C code for the game engine. You can edit it freely, just note that you may get merge conflicts when updating to a new version of DX.
The src/dx/config.h file
This is where you configure mod settings like the mod name and new game start, the debug menu, and more. You don't need to understand C code to use these options — just edit the file.