Intersection of mesh and a line

Thank you!
Yes, I’ve been looking through those, but they seem to focus on finding an object that’s being hit, not checking for a hit against a specific mesh. In my level I may have hundreds or thousands of meshes, but I only need to test for intersection against one of them - the floor. And I need to do this as fast as possible. Wouldn’t these methods be excessive for my case where I already know which object is being hit?

I’m guessing I’m supposed to use TraceLineByChannel and create my own custom “Floor” channel, right? Would this completely exclude all other objects from being tested? If so, I guess that’s exactly what I need!