The Terrain Generator is a prototype of a tool for Unity Editor that uses Procedural Content Generation (PCG) algorithms for terrain generation. It was made as a part of my Computer Science degree engineering thesis on implementing PCG in computer games. It uses various CPU-based noise generation algorithms to generate terrain using the Terrain API provided by the Unity Engine/Editor. The generation process has multi-threading implemented, and there is a debug tool to test the settings.

The tool is distributed as a UPM package. You can download it from the releases.

Beside thesis, it was used to make a game called Roadside.

• Terrain generation using fractal noise, domain warping and ridging;
• Ability to choose between Perlin, Simplex, and Cellular noise algorithms;
• Large control over generator parameters (e.g. curve modifiers);
• Managing multiple Terrain objects in the scene;
• Multi-terrain generation on separate threads;
• Rectangular and radial terrain falloff;
• Simple texturing with splat maps;
• Editor UI with SO profiles storing generator settings;
• Full compatibility with other plugins and tools;
• Debug tool for testing generator settings.

The tool is a prototype made for engineering thesis and may not be suitable for more serious projects.

• Download the Terrain Generator.zip file;
• Unzip it in the Packages directory in the Unity project directory;
• Check if the plugin is installed in the Package Manager window;
• Attach a Terrain Grid Data component to an empty game object or an existing terrain;
• Set up the Terrain settings and Terrain Layers (if you use Splat Map);
• Open Terrain Generator window and create a new profile;
• Adjust Noise, Splat Map and Falloff settings;
• Open HeightMap Debug window from Window menu (optionally);
• Generate HeightMap and SplatMap.

The tool may not work properly in Unity versions newer than 2019.3.

• Unity 2019.3.5 - game engine/editor;
• Unity Mathematics package.

• Michał Biernat @m-biernat

All rights reserved (no license):

• You can view (peek into the code and assets) and fork this repository;
• You cannot reproduce, distribute, or create derivative works;
• You can use the tool ("Terrain Generator") in your projects free of charge.