Common Client-Server mistakes

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#121

tested, when anti-cheat compared 2 positions every 1/4 of second when i teleported player in 1/8 of second it didn’t fired

#122

Could you please show me the teleport script and the anti-cheat?

#123 
-- Tp script, teleports player to position X and then quickly back.

-- Some trigger
local current = Character.PrimaryPart.Position
Character.PrimaryPart.Position = targetPosition -- let's say we want to tp player to coin and back to don't fire anti-cheat
task.wait(1/8)
Character.PrimaryPart.Position = current 

-- Anticheat, max distance is set in settings and given
local last = Character.PrimaryPart.Position
while true do
  local current = Character.PrimaryPart.Position
  if (current - last).Magnitude > MaxDistance then
    print("Player cheated: "..Character.Name)
  end
  
  last = current
  task.wait(1/4)
end

In this scenario, there is chance that coin collection will detect that player is near it and then player teleports back soo he can’t be caught

#124

The problem is that you are checking every 1/4 seconds. An actual anti-cheat will only check every second.

You can whitelist server-sided teleports by listening to HumanoidRootPart:GetPropertyChangedSignal("CFrame") and setting the last CFrame to the new CFrame, this will not trigger upon client-sided teleports but will when a server-sided teleportation happens, letting your server-sided scripts teleport players without the anti cheat having a spasm.

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#125

if there is 1 second of cooldown between checks, still player can teleport super fast and collect coins, then go back and never be caught

#126

Thats just not how it works.

#127

Then? how it works? if we have touched event or something to detect if player collected coins, 1/2 of second is enough to collect them and go back, also lerp teleport can bypass stuff

I don’t want to argue anymore, i know there can be good anti-cheat and made well can limit use of cheats, still for most of the games there are no need for anti-cheat as it doesn’t harm players, only gives cheater a slight advantage, even then there can be automation cheat that simply allows player to be afk and get items.

Still for me most of the time anti-cheat is useless or simply you don’t need that strong anti-cheat, safe remotes is the most important thing, thanks for discussion anyways

To also agree with you, i will say there are moments when anti-cheat is usefull and moments when it’s useless, bye

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#128

I disagree in some cases you need to access the stamina on the server for things like stamina draining when you jump or a weapon being used,

#129

this can be done via remotes., also jumping can be done client-side completely

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#130

But what if someone drives a vechicle off a cliff or smth? kindof realistic maybe? ¯_(ツ)_/¯

True you helped me feel less lonely that I’m not the only one that knows about these comon mistakes a lot of people make! :D

Well then you have to rely on Byfron’s Hyperion, and players reporting exploiters. Which is okay, especialy if your just gonna make a single-player game or just a non-competitive game in general, but if your making a competitive game then, you should add anti-cheat, or server authoritive stuff like Chickynoid, or just any defense against exploiters.

So true especialy for someone with bad internet like me.

I’d also like to add:

6. Teleportation:

Remember when moving the Player’s Character you should do it client-side to make sure there’s no delay.
IDK what else to add

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