Probably the most complete sample of adding stuff you'll find. I wanted to add something more to it but never got around to it, so I guess I'm releasing it as is.
RoomOfDetermination: Adds a new room to Undertale 1.08.You will need to track down all the font files yourself, I can't host them here for licensing reasons :( TTFFonts: Makes the game load fonts in TTF format from current directory instead of using the spritesheet fonts.testing: nothing important, just displays random text on the main menu - the first script I ever made.
#Multiextractor Pc#
#Multiextractor code#
#Multiextractor manual#
Support for running scripts that automatically modify your data file (or perform other nefarious tasks) - this is the way to distribute mods, but creating them is a manual job for now.The output is accurate (except for the latest GameMaker versions), but it could use some more cleaning up of the high-level structures. This means you can add any custom code to the game, either using the built-in GML compiler or GML assembly. Allows for code disassembly and editing.Includes a (very) simple room/level editor.An editor which lets you change (almost) every single value, including unknown ones.Properly handles all of the pointers in the file so that if you add/remove stuff, make things longer/shorter, move them around etc.Can read every single byte from the data file for lastest version of Undertale, Deltarune, and most other GameMaker: Studio games (GM:S 1.4 and GMS2 bytecode versions 13 to 17 are currently supported) for every platform and then recreate a byte-for-byte exact copy from the decoded data.Have questions? Want to talk? Join us on Discord! I heard you like digging deep into Undertale data so I made a tool just for you!