Server Side Hitbox checking with Client Side Animations

[kind kindle]

Hello everybody. My question is:

How do you implement a system where the server checks hitboxes and the client plays animations, but the server checks hitboxes multiple times during the animation (based on the track)?

My attempts:

1. Playing tracks on both client and server ❌ (track played 2 times visually)
2. Sending track that the client played to the server ❌ (the server doesn't know that the track on the client exists)
3. Playing track on the server ❌ (input delay)

[thorn berry]

Timed server stuff

Wym input delay on the last part

[kind kindle]

If the animation is played on the server, there will be input delay.

[thorn berry]

animation goes on the client

timed stuff on server

[kind kindle]

So basically calculating when a certain keyframe is reached on the server by calculating time between when the server receives the remote event etc. etc.?

[tall veldt]

animation:getnamedkeyframetime

or whatever it's called

then remote when animation starts, send timestamp etc

[slim comet]

cant animation events be used here then use remote events?

[kind kindle]

Will try, thanks.

[kind kindle]

Do you mean firing remote events when animation events are reached?

[slim comet]

yes

[kind kindle]

Might try that out, thanks.

[tall veldt]

seems to not work for server authority though

predicting animations is difficult..

[kind kindle]

[tall veldt]

i mean the rollback feature doesn't work very well for animationtracks

similar and seemingly related issue to sounds also

let me know if you can see this page https://create.roblox.com/docs/projects/server-authority/techniques#animations-sounds-and-visual-effects

    RunService:BindToSimulation(function(deltaTime)
        if RunService:IsServer() then
            -- Forward inputs from server to all clients
            for _, player in Players:GetPlayers() do
                local humanoidRootPart:BasePart = player.Character.HumanoidRootPart
                local inputContext:InputContext = player.PlayerGui.InputContext
                module.storePlayerInput(player, humanoidRootPart)
            end``` this is so stupid...

    -- Play the explosion emitter if the grenade just exploded
    if previousGrenadeState ~= grenadeState then
        if grenadeState == Simulation.GrenadeStates.Exploded and grenadeTimer < 0.2 then
            grenade.ExplosionEmitter:Emit(100)
            grenade.ExplosionSound:Play()
        end
        previousGrenadeState = grenadeState
    end ``` compare if a timer is near zero and then play effect, or disable it, check every frame, like wot