knockback responsiveness issues

[keen talon]

this is more of a general question rather than one that requires code

how do i knockback NPCs without responsive/consistency issues?

for context, this is a combat game

[sterile basin]

if you mean the responsiveness for both client and server then you gota make a synchronised system

part for the client handling visuals, the other for server validation

[keen talon]

i have an effectmanager set up, but i assumed knockback wouldn't fit under the effects category

and by responsiveness i mean from the point the module is called to when the action happens

the delay is too significant on server so im assuming there's better solutions

[sterile basin]

the delay being on the server, where are you calling the module from, if client then its all about the latency and you cant do much about it

im not too experienced with synchronisation, but id decrease the passed parameters through the remote events

[keen talon]

it's after the target has already been hit inside of a damageManager, if it's the last hit of a string it plays an animation and is suppose to knockback, i check if the target is a player, if it is i fire a unreliable remote event to do the knockback, im not sure what im suppose to do for the NPCs though

[open prairie]

There are 2 solutions

[keen talon]

this is currently the way of events my systems goes through
input (client) -> actionManager(client) -> actionManager (server) -> damageManager (server) -> effectManager (client -> server)

the damageManager is the stage im currently at, where i am suppose to knockback

[open prairie]

1. Give player ownership of the NPC
2. Make a sync system and sync if client action goes out of sync with server action

[open prairie]

Either way client applies the velocity/force

[keen talon]

what do you think is better?

[open prairie]

First one is easier but exploiters can do anything with the npc

[sterile basin]

so the npc health must be saved outside the npc

[open prairie]

Second is more secure and harder to implement

[keen talon]

got any examples of the second one?

or what id learn to start a system like it

[open prairie]

There are levels to this. A basic synced action system would be interpolating by the position sent by server so at the end the position stays accurate

[merry flume]

** You are now Level 4! **

[open prairie]

A more advanced one is full on rollback setup

The advanced one is what cs2 uses

[keen talon]

cs2?

[open prairie]

Yup

You can actually read how cs2 devs mastered latency compensation

[keen talon]

ive been scripting 4 years so i have knowledge over majority of things just avoided certain topics like these

has this been done in roblox?

[sterile basin]

i think rell games have it

[open prairie]

I think no, at least not a fully server autho one.

[keen talon]

im pretty shit at math would that be important?

[open prairie]

Currently roblox is implementing aurora service

Which will be this

[open prairie]

Actual network skills will be more important

Plus

Roblox doesnt have cusrom physics

If you want a system like cs2 I domt think its possible

[keen talon]

would it be smarter to just do server ownership over the rig with sanity checks

[open prairie]

You cna try applying the velocity both on client and server as soon as possible. I heard that kinda makes things not go that much out of sync

If the system really has to be smooth with 1 to 1 combat with npcs

I would just give network ownership

[keen talon]

is it possible to 100% secure network ownership

[open prairie]

No

You need the custom rollback physics system

Which is practically impossible unless you write physics engine in roblox

[keen talon]

so in theory regardless of the sanity checks players can end up killing npcs via console?

[open prairie]

You can do sanity checks

I think you got me wrong

Sanity checks wont give you %100 safety

But will make it harder to exploit

[keen talon]

i see

what's things i should look out for exploit wise giving up network ownership

i know they can just tp npcs anywhere right?

if cancollide they can fling people and shit

[open prairie]

Yup

[open prairie]

I mean they can fling people with their own torso part anyways

[keen talon]

ya but npcs wouldnt be anticheated

ill probably just end up making them uncollidable and get the startpos and the endpos before and after the velocity

[open prairie]

I mean I showed you the options

[keen talon]

and validate the distance

[open prairie]

Yeah

That works

[keen talon]

alright appreciate the help