No plugins needed to use worlds created with this!
A friend came to me and asked me if I could make a mod that allows them to place blocks freely without restrictions to the world grid, but having hitboxes, so they could for example work as stairs (Video) or secret room entrances (Video).
An example: Diagonal staircase
Credit to "Halfcraft" for the idea and the mechanic, it supports several blocks and is based off Command Blocks. This one is not compatible with plugins though, so I was asked to make a plugin which is able to do the same.
Usage
Here is a demonstration of how the commands work: Video
This is currently still a WIP and I will have to clean up some stuff, because it's a bit older, but it should work nonetheless.