What sanity checks for projectiles?

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#1

I have made a projectile system and I want to know what sanity checks I should do on the server.

My set up: ↓

  1. Client-1 asks server to shoot their gun.

  2. Server does sanity checks.

  3. If all ok then the server tells all other clients to create a bullet from client-1’s gun.

So my sanity checks will be going in number 2 where the server is the bridge between client-1 and all other clients.

Any help appreciated!

#2

Anyone know what kind of checks?

#3

Could you explain a bit more on how it works? Does the client send the hit target or does the server perform the projectile hitbox?

#4

So, everything is done on stage 3, the creation of the projectile and all that is done at stage 3, the first stage is simply the client telling the server “hey I want to shoot a bullet”, the second stage is where I want to put some sanity checks to see if the player is allowed to shoot.

I just need some ideas of what to check for.

#5

My ideas would be something like this:

  1. Implement a server-sided debounce via attributes on the character/weapon, depends on the way your game is
if character:GetAttribute("ShootDebounce") then
	return
end

character:SetAttribute("ShootDebounce", true)

-- // do the projectile logic

task.delay(0.1, character.SetAttribute, character, "ShootDebounce")
  1. If there is a limited amount of ammo, implement the check on the server to prevent exploiters firing projectiles without any limits
-- Let's say the character has an attribute "Bullets" and it's set to 30
local bullets = character:GetAttribute("Bullets")
if bullets <= 0 then
	return
end

character:SetAttribute("Bullets", bullets - 1)
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