Creating an Entity Mod

Entities in The Underworld are generic objects. They can have custom LUA code, allowing you to make them do interesting things.

These tutorials will help introduce you to writing LUA-enabled mods.

Recommended prerequisites

• Try making a quick Monster Mod to learn more about text parsing.
• Basic understanding of JSON syntax.
• Some basic knowledge on LUA scripting will be necessary:
  • If you're already familiar with other programming languages:
    • 15 minute LUA primer
    • LUA Online Book
  • If you're new to coding:
    • TODO - Find good reference and put it here

Tutorials

• Entity Tutorial 1: Creating a Simple Prop
• Entity Tutorial 2: Simple Script
• Entity Tutorial 3: Random Script
• Entity Tutorial 4 demonstrating a Usable Object & Modifying the Player
• GPS Sample demonstrating the 'this' keyword & location

Reference

• LUA Implementation Limitations & Notes
• Entity Mod JSON Format
• LUA Utility Functions
• Debugging Hints
• LUA Class Reference

New Engine / Development

• Current Status of Modding in the New Engine
• What's New in LUA Modding Since Old Flash Engine

Help

If you get stuck, don't give up! Ask questions on discord.