Defective Engine

What is Defective Engine?

Defective Engine is a custom Friday Night Funkin' engine that offers an efficient source code modding experience.

Features

Organized source code with many powerful tools:

• Simple week and level loading
• Individual level classes (Think of Psych or Codename Engine's "song" scripts, but much more powerful!)
• Chart conversion for multiple engines

Several optimizations:

• Notes, sustains, sustain tails, and note splashes are all recycled, which avoids creating tons of new instances
• Sustains are now rendered as 2 sprites (the "piece" and the "tail") instead of dozens of separated sprites

Other:

• Multiple opponents, players, and spectators
• More than 2 strumlines
• More (and less) than 4 keys
• Character editor
• Options menu
• Support for several targets (cpp, hl, html5)

Mods using Defective Engine

• FNF: Baldi's Basics Madness (V2!)

Building

Follow these steps to build the game:

1. Install Haxe.
2. Install the required libraries by running the following commands:
   • hxcpp: haxelib git hxcpp https://github.com/HaxeFoundation/hxcpp
   • lime: haxelib install lime
   • openfl: haxelib install openfl
   • flixel: haxelib install flixel
   • flixel-addons: haxelib install flixel-addons
   • haxeui-core: haxelib git haxeui-core https://github.com/haxeui/haxeui-core
   • haxeui-flixel: haxelib git haxeui-flixel https://github.com/haxeui/haxeui-flixel
3. Build the game by running the following command in a command prompt (replace :target: with a specific target, like cpp, hl, or html5): haxelib run lime build :target:

Credits

• Detective Baldi: Programming
• KayipKux: Artist and composer
• Berry: Artist and composer
• Sword352: Tons of optimizations
• The Funkin' Crew Inc.: Created the original game

Notice

Defective Engine is still in early development. The engine is already very capable, although, if you plan to develop a mod, there are a couple of things to take into consideration:

• I use many placeholder levels to test development features, which you would want to remove if you make a mod. All of the current placeholders will be replaced with a coherent modding example once the engine nears a full release.
• The engine is not super beginner friendly! There isn't a ton of documentation right now and you can cause a LOT of confusing crashes if you don't know what you are doing! Error handling and documentation will be significantly improved in the near future.