collision ray?

how does the ray work anyway?
i look at the roaming ralph script but i don’t understand.

I too am just starting to look into the collision system, and while we’re on the subject, I also have something I want to ask about the Roaming Ralph example:

Why doesn’t it use a CollisionHandlerFloor?

Take a look at this manual page, it says:

A CollisionHandlerFloor would indeed be a better solution, yes.