Adding a collider that interacts only with raycasts in unity

Question

I made a trail in my program, which I would like to be clickable, like a button. I thought about adding a collider, and hitting it with a raycast, but it forces me to exempt it from various OnCollision triggers (it's not meant to affect them at all). How can I handle it efficiently?

Answer 1

You can use Unity's concept of physics layers to solve this problem. You can choose which layers interact with other layers, and pass the layer as a parameter to Raycast to restrict to the layers you want to check against.