Wave Function Collapse

[dbox]

Gotta say, AP's code caught my attention because lots of great results for LOC. When I checked out a github link, I realized this stuff is like AI without a bunch of neural net stuff.
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Definitely something worth mastering.

Yes, it's a very cool algorithm and one that is used a lot in procedural generation for games (along with perlin noise, but that's a topic for another day).  It can be applied to image creation, 2d tile-based maps, or even 3d worlds.