BepInEx for KSP 2

https://github.com/BepInEx/BepInEx

What is BepInEx?

BepInEx is a tool used to allow modding / custom code execution in Unity and other C# based games. As of writing KSP 2 does not support loading arbitrary mods, so the only way to run addons & load assets is through this loader.

Harmony and MonoMod.RuntimeDetour are packaged with this loader, allowing you to modify game code & functions at runtime.

BepInEx uses "plugin" to refer to the equivalent of Addons in KSP.

Additional features as compared to KSP 1 style modding

• Ability to modify .dll files before they are loaded, which allows for modifications not possible with Harmony.
• Editing enums, patching static constructors, adding entirely new types to a specific assembly, immune to JIT inlining etc.
• Much earlier code execution meaning that you are able to modify the game (and Unity itself) before it even starts loading
• External console & logging so that you don't have to scour game logs for any info / error output
• Fixes certain issues with Unity operating on platforms other than Windows
• Includes dependency handling to ensure mods that rely on other mods are loaded in the correct order, or not at all if prerequistes are missing
• Has a consistent way of reading / writing / manipulating configuration per plugin
• Contains base libraries (such as Harmony) to prevent conflicts with mods providing their own, differing versions

Other features

• Immune to being uninstalled by game updates; no files are replaced
• Supports Windows, Linux and Mac OSX
• Has dev tools that you can use to assist in plugin development
• i.e. being able to reload plugins while the game is running, a UI to examine the entire loaded scene etc.

Getting started

For Windows:

• Download the latest version of BepinEx v5 x64 from here
• Extract the folder such that your game looks like this:

You are done!

If you get stuck with the installation process, please refer to the documentation: https://docs.bepinex.dev/articles/user_guide/installation/index.html

For Linux/Unix/OSX:

It is more or less the same process, with some minor differences. Refer to the above documentation

Installing plugins

To install plugins, place them inside of your BepInEx/plugins folder. (This directory might not exist for you; launch the game once to have BepInEx generate its folder structure)

While it's possible to place every .dll file in any place in BepInEx/plugins, it's strongly recommended that you have one folder per mod to make it significantly easier to manage updates and uninstallation.

Creating BepInEx plugins

A guide exists here for writing your first BepInEx plugin: https://docs.bepinex.dev/articles/dev_guide/plugin_tutorial/index.html

As reference here is a pre-made C# project for an example plugin that does two things:

• Creates an in-game notification when you press F2
• Changes all of the translatable strings in the game to "Chungus" on pressing F3

https://files.catbox.moe/6c48ls.zip