The default screwdriver included in minetest_game, as well as any other screwdriver mod I have found, operate differently depending on the node's direction and rotation. This means that any given click on a node may produce different results which you cannot predict at a glance.
The Rhotator Screwdriver uses a different approach: the direction and orientation of the node make absolutely no difference.
These are the factors that affect the results of a click:
You will always be able to predict exactly the effect of the Rhotator Screwdriver.
Four consecutive clicks of the same button on the same position will always bring the node back to its original direction / orientation.
### Why is it called "Rhotator" and not "Rotator"?
In mathematics, the greek letter *Rho* is used to indicate some stuff associated to certain types of matrices. Since I'm using matrices to compute the various rotations in the game I thought about including it in the mod's name to reduce the chance of naming conflicts.
# Appearance
Here you can see the Rhotator Screwdriver along with the Testing Cube.
*The testing cube is just an addition to help practicing with this screwdriver.*
The left-click interaction area is not limited to the edges you can see in the Testing Cube. In reality you can click anywhere in a triangle like this (highlighted here just for convenience, you won't see anything like this in the game):
Nodes that don't occupy a full cube (such as slabs and stairs) can still be rotated properly, it's enough that you pay attention to the direction of the part you're pointing at - the "stomp" parts of the stairs will behave as the "top" face, the "rise" parts will behave as the "front" face. With the Rhotator Screwdriver there never really is a "top" or a "front" or whatever: the only thing that matters is the face you're pointing at.