How would I secure an FPS game?

[TruestBlu (Sienna)]

I have an FPS game currently. The raycast is on the client and the damage is on the server. How on earth would I secure that?

[Lokos]

This tutorial demonstrates how a proper gun using raycasting should be made:

How to make a raycasting gun

Preface Alright so the developer hub and old wiki had this, although a few months ago it was removed from the former because it was just so terribly outdated it was a joke. So I thought I should revive that old tutorial. A lot has happened since that tutorial, like new raycasting api being added and filtering enabled being enforced and that tutorial was just never updated. So I am making this with that all in mind. Let’s begin! Alright so first you will want your weapon. I grabbed a Colt…

You would fire a RemoteEvent from the client with the position of the client’s mouse to the server, because you can then also calculate the ray on the server.

[TruestBlu (Sienna)]

Thank you! I’ll try it out right now.