Get body to roll over curves or terrain

[Jon Grant]

I have a body that I want to roll over a hilly terrain - and always stick to the curve of the terrain - any ideas?  Right now I'm updating the _body.position.x , which is good for flats and slight hills - but I want to make the body always follow the curve 

thanks for any help!

[T1m_]

You can try use material with large mass than you have now. Other way (I could say not so simple way) - raycast from body's center of mass to find position on the surface below it.

[Noah Rosenfield]

i think it depends a bit on what else you have going on and the exact affect desired, but you could use a distance or pivot joint attached to a body below the curve of the terrain which mirrors its movement.