MK8-Editor

An editor for the WiiU game, Mario Kart 8. It currently only edits course BYAMLs, which contain info about the objects in courses.

IMPORTANT: I did not make this editor. It was originally a fork of Kinnay's SM3DW Editor, which was then modded by Mr. Rean among other people to edit MK8. I, TheKoopaKingdom, just made tweaks to Mr. Rean's editor, whose Github has been nuked.

Setup

This requires the following:

• A dump of Mario Kart 8's files - This is what MK8-Editor operates on, you can get them with ddd. ddd is a Wii U application for the Homebrew Launcher. You can use it by extracting ddd and the Homebrew Launcher's files to an SD card, putting that in your Wii U, going to http://loadiine.ovh/, and selecting Homebrew Launcher RC1.
• Python 2.7 32-bit - Go here, and click Download Python 2.7.11. Install it to C:\Python27. You can keep the default settings, but adding python.exe to your path will make things easier later on.
• PyQt4 - Go here, click PyQt4-4.11.4-gpl-Py2.7-Qt4.8.7-x32.exe, and run the installation. If it complains about not having Python, confirm that you are on a 32-bit version of Python (We use this because of PyOpenGL), and that you are on version 2.7.11.
• PyOpenGL - Open a command prompt (Search for cmd.exe). If this is the first time you've installed any version of Python, type pip install PyOpenGL. If you have multiple installations of Python on your computer, type C:\Python27\Scripts\pip.exe install PyOpenGL.
• A hex editor - HxD will do.

This application uses Python 2.7, and not 3.5, so type python -V into a command promt. If it outputs anything other than Python 2.7.11, you'll run launch.bat.

If running python -V did output Python 2.7.11, you should be able to double click on main.py and be fine.

Usage

This tool edits course BYAML files, you can find one in your MK8 files using this reference. Due to a bug in saving, before doing anything, open your BYAML in a hex editor and copy the first row of bytes (Offset 0x00000000-0x0000000F) paste it somewhere for later.

After making your changes and saving the file from MK8-Editor, open up the new BYAML in a hex editor and paste the bytes we copied earlier to offset 0x00000000.