

If you wanted to make a character in a game get struck by lightning, you'd have to code in some specific scripted sort of event.

In this case it's just a light source + some geometry + RTX = shadows (I'm sure I'm oversimplifying). It opens so many possibilities up for not just efficiency in development, but for new game mechanics that seem to appear out of nowhere as a result of two or more types of systems interacting with one another. I love stuff like this because it aims to emulate actual physics.
