Hi @anonymous_user_1a88dba9! Welcome to the forum!
There are a quite a few ways to implement what you are trying to do, so could we have a few more specifics. Are you going to use a radius? Is this grid based? Is the surface flat, or are you wanting to wanting to go up and down terrain?
Any additional information you can provide should narrow down what it is exactly you want to do and how to implement it!