I got addicted to Mindustry recently, and so I've decided to work on a vaguely similar project- this is just a demo of the conveyor belt code, simple stuff, feel free to use it in your own projects as long as you give credit!
Junctions that allow conveyors to cross without interacting with each other, and units for conveyors to intersect are both in the works, as well as different tiers of conveyors and a power system so that they don't run without a power source. Credits to Minustry for the inspiration, great game, check it out.