How to make a single wheeled always erect 2D physics based vehicle?

Question

I want to make a 1 wheeled 2D Vehicle. I started from here. But how to make body stand erect always above the wheel. In 3D, it can be imagined like like a box(body) with ball shaped socket on top of a ball that rolls. But I want it in 2D with physics. So far it is like this but body falls off to left or right:
Here I made player(body)'s collision2D scaled half of sprite on y axis so it rests on circular wheel. It is like self balancing robot. Exactly something like with top half replaced by a square in 2D(mainly) and 3D game.
Is this the correct way to do this or is there a simpler way to do this?

Answer 1

I can't really help as I don't have the skills yet but I'll be watching this as it looks like great fun. Best of luck with it.

Answer 2

Character mode prevents rotation, but not sure if will work fine with that setup, the object may need to be more complex, with joints maybe and controlled by custom integrators.

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If the game does not use complex physics, the wheel could be just a sprite rotating with the body speed, and the body a capsule in Character mode.

Comments

I do want complex physics