How to determine the distance to an obstacle in Unity in 2D mode?

Question

Game development

In 3D mode, according to Hawking, I created a beam and a hit, which was initialized in a method in no extension with similar parameters. Actually, it is logical, because specifically in my case, between the barrier and the character there are objects that indicate the ground (view from above). Actually, how to proceed? Or where can I read something to find out? Physics.RayCast(ray, out hit)
Physics2D.RayCast

Answer 1

Everything is there.