08-04-2021, 09:00 PM
Hi, I know this is an old post but I found a solution that worked perfectly for me (just requires modifying with curvy spline API) and hopefully will help other forum users.
https://answers.unity.com/questions/205406/constraining-rigidbody-to-spline.html
https://answers.unity.com/questions/205406/constraining-rigidbody-to-spline.html