Star Rod C is a tool that lets you compile C code to patch files using tools and headers from the Paper Mario decompilation. Star Rod is used as the assembler and linker.

Supported platforms include anything the decompilation compiles on. This includes a number of Linux distros, macOS, and WSL2.

You'll need:

• A Star Rod mod folder
• git

cd to your mod folder and run the following commands:

$ git init
$ git submodule add https://github.com/nanaian/star-rod-c.git
$ git submodule add https://github.com/pmret/papermario.git
$ make -C star-rod-c setup

Create a globals/patch/foo.c file in your mod folder:

#include "common.h"

ApiStatus ExampleFunction(ScriptInstance* script, s32 isInitialCall) {
    // Increment *Var[0] by 10
    script->varTable[0] += 10;

    return ApiStatus_DONE2;
}

Run Star Rod C: make -C star-rod-c

This should produce a globals/patch/foo.patch file. All functions are #exported unless their name begins with _.

You can then use the global patch as usual, in any script. For example:

% kmr_20.mpat

#new:Script {
    Set *Var[0] 5
    Call $ExampleFunction ()

    % *Var[0] == 15`

    Return
    End
}

Running make -C star-rod-c will compile all globals/patch/*.c files to a *.patch file in the same directory. make won't recompile files that haven't been modified since the last time it was run.

• You may not name a function main.