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This was a university project I made in 2025. It was a kitbash of two different tutorials, one by Sebastian Lague, and one by SlothInAHat.
Programming
Layering Perlin Noise
The core fundamental was layering Perlin Noise to reduce artifacts in the default Unity Perlin Noise function. Both tutorials used layering, though in different ways. Sebastian extended Perlin Noise with features like octaves, whereas Sloth's tutorial used multiple noise maps for different parameters.
Octaves
The number of octaves is the number of noise layers used. Persistence and lacunarity change how each layer affects the final outcome. This code is directly from Sebastian Lague's tutorial.
Terrain Layers
Tiles were calculated using a mixture of three noise maps. Beyond the base role of reducing artifacts, this also allows more biome variety, as there can be multiple terrains which are hot but are differentiated by the moisture. This code is optimised from SlothInAHat's tutorial.
Rule Tiles
For aesthetics, Rule tiles came in handy as I was working with a tilemap. They are used to randomly distribute tile sprites and make the terrain look less plain.
Rule tiles also become near-essential when randomly generating rivers. I only had to draw 4 unique sprites which were automatically chosen and rotated based on where the other river tiles were.
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