Directions

Bash planks into sticks from any direction, provided there's a fixed backstop. Chop rotated logs into planks. Require a backstop for non-lode tools.

I am not familiar with Lua, so there may be more idiomatic and efficient ways of doing this.

I would also like to make door presses honour "on_place = minetest.rotate_node", but don't yet see how to do it.