The active rail can only be placed in 8 directions, but normal tracks can be build in way more, so you can't put them in all directions. Any way to do this currently, or will I have to flatten the track where I need to use it?

For now it can only be placed in 8 directions, since I've only created active rail versions of the "straight-rail" entity. I don't think curved and half-diagonal rails would be too hard to implement, so I'll try add that in! Honestly can't believe I haven't thought to do that yet