I am making an m1 system using server authority. Local animations don't play properly and its buggy.

[frail oar]

can you elaborate on the problem

[trail garden]

The animations don’t play, even though :Play() was ran. Sometimes it would work, sometimes it wouldn’t.

[frail oar]

do you give them enough time to preload?

[glass hazel]

Roblox studio just broken atp i swear

oh wait no yeha im being deadass @trail garden

wait what type of animation is it?

if its like a rig animation then yh roblox broken atm

[trail garden]

yes, my AllAssets module automatically preloads them

[trail garden]

im not sure

r6

thats all I know

[glass hazel]

yeah

wont work then

set game settings to r6, your avatar to r6, and ur still r15

add a print statement saying something like print(plr.Character.RigType)

or plr.RigType

[frail oar]

@trail garden https://devforum.roblox.com/t/animation-sometimes-plays-sometimes-does-not/2425393/17

[glass hazel]

i forgot

i had the same error and found it was literally just their new avatar system

[trail garden]

I redid my same script without server authority and it worked

[glass hazel]

@trail garden

make a local script rq

or anything in playerchar

and run this

local plr = game.Players.LocalPlayer

local char = plr.Character or plr.CharacterAdded:Wait()
local hum = char:WaitForChild("Humanoid")

if char and hum then
    print(hum.RigType)
end

it will prob print smth like 'Enum.HumanoidRigType.R15'

thats just roblox being a bit slow in the head

[frail oar]

holy i remember that stupid bug

[trail garden]

FUCK

ITS R15

[glass hazel]

yep

[glass hazel]

yeah

[frail oar]

no freaking way

[glass hazel]

you cant change it so dont try

[frail oar]

😭

[glass hazel]

its roblox new avatar bullshit

kinda fucks me over considering my main focus is scripting animating and vfx 😭

[trail garden]

actually

[glass hazel]

What i mean by this is like dont try change ur settings to standard r6 or your avatar to r6 unless u wanna waste time 😭

[trail garden]

Can you edit vfx in an animation?

[glass hazel]

yeah

thats what i do but yh

[trail garden]

Slinky dose not know that

:Sob:

and he's a3 😭

[glass hazel]

fr?

slinky been around for time

[glass hazel]

yh 😭

[trail garden]

he got banned

[glass hazel]

ACTUAL?

wtf

[trail garden]

for ban evading lmfao

[glass hazel]

lmfaooo

L ig

i liked him

to run vfx with animation

i use moon animator

create an animation event, and inside it change the code

[trail garden]

can you do sfx too?

[glass hazel]

yeah

I use lunar sound to allign it

here ill send a vid rq

[trail garden]

I thought thats only a moon feature.

[glass hazel]

the sfx isnt in video because i forgot to enable audio so i added music

[glass hazel]

yeaah but u can with scripting

i use moon tho

i got moon years back

vfx was too bright like on the slash i fixed that, but it changed just as i was recording and i aint even notice

[trail garden]

Why can't you just add the vfx object to the timeline, and like changing the properties of a basepart, you change the Play property in the vfx object or something like that

[glass hazel]

lmao

because roblox r lazy and dont care about us fr

a third party source (moon animator) is better

[trail garden]

So, I switched the thing to r6, and the HumanoidRigType stayed r15 but the avatar was r6 😭

[tardy cove]

** You are now Level 21! **

[trail garden]

SHUT UP

[glass hazel]

yh ik 😭

i warned you

shi is broken asf

[pure fulcrum]

Yh i had this asw

Ill lyk how I fixed it when im on my pc (few hours)

There was a setting in the avatar settings thing to switch avatar type to r15/r6

(From the top of my head I think u press the 3 dots in the top right of the avatar settings, which opens a small menu with 3 options) @trail garden

[trail garden]

I know that, but it won’t work

[dusky sun]

if it works it works 🤷

your code is not built correctly to handle rollback and resim on misprediction, so anims will be jank and may stutter / restart multiple times. same thing happens to sounds and vfx.

best i can suggest at the moment is read the docs "advanced techniques: play a sound" https://create.roblox.com/docs/projects/server-authority/techniques#animations-sounds-and-visual-effects

[trail garden]

What about this issue @dusky sun

[trail garden]

OK, so what I’m getting from this is that sometimes the client will miss predict what the server does, and that messes up animations, VFX, sounds, etc.

For animations, I can make a custom table that has the animation track and the previous animation timestamp.

local PreviousTimestamp = AnimationTrackTable.PreviousTimePosition

local RecordedTimstamp = AnimationTrackTable.AnimationTrack.TimePosition

If PreviousTimestamp ~= RecordedTimestamp then

AnimationTrackTable.AnimationTrack.TimePosition = AnimationTrackTable.PreviousTimePosition

end

Would something like this work

[glass hazel]

yeh no the problem isnt that, its that an r6 anim cant run on an r15 rig, and despite efforts to change to r6, (changing their actual avatar to r6 and settings), EVEN if ur body shows r6 limbs, inside has r15 meshes, and when u run print(plr.Character.Humanoid.RigType) it prints r15, which animations that are r6 can't be ran on.

[dusky sun]

no issue. the rig is either r6 or r15 doesnt matter what the rigtype says. if the animation plays at all then it's not a rigtype mismatch.

pretty simple to figure that one out

[dusky sun]

and because of the fact they say that the animations don't play properly rather than don't play at all, big difference in condition there, it's a safe bet this isn't the problem.

[glass hazel]

well id assume their animations aint running

[dusky sun]

which only leaves this as the remaining problem. animations won't play properly from a simulation without special handling.

and this is not correct handling: ```lua
M1InputAction.Pressed:Connect(function()
M1Hold = true
end)
M1InputAction.Released:Connect(function()
M1Hold = false
end)

task.spawn(function()
    while true do
        if M1Hold then
            ExecuteM1(LocalPlayer.Character)
        end
        task.wait()
    end
end)```

occasionally problems like this can be a rigtype mismatch, but with server authority involved and we know occasionally the animation does play correctly, so it's just simply improper simulation code.

[trail garden]

ok, what's the correct way?

[dusky sun]

best advice i can give you at the moment is read the docs https://create.roblox.com/docs/projects/server-authority and i suggest looking at runservice:bindtosimulation

[trail garden]

so there is no correct way?

[dusky sun]

when is there ever a single correct way to do anything?

[trail garden]

Answer the question, socrates.

[dusky sun]

is this not an answer?

[trail garden]

Oh wait

Now I realized.

My apologies

[dusky sun]

server authority is some fairly advanced tech, and also very early release. there's not even any misprediction debug info, you kinda just have to guess at the moment.

add to that, a standard humanoid walking into an unanchored part triggers mispredictions, that's a problem with roblox, and likely why they're rushing to release their updated unified replacement for the humanoid, along with the AnimationConstraint.

[trail garden]

Why can we specify the FrequencyStep?

RunService:BindToSimulation(function()
        if M1Hold then
            ExecuteM1(LocalPlayer.Character)
        end
        task.wait()
    end, Enum.StepFrequency.Hz60)

I don't see the use in it.

[dusky sun]

i see use in it, would be nice if the other runservice events had it, but eh i couldn't tell you why roblox decided on it

[trail garden]

So, what the use?

[dusky sun]

running the simulation slower

[trail garden]

for?

[dusky sun]

performance

[trail garden]

ah

[trail garden]

I want to kill myself

Function AnimationTrack.GetMarkerReachedSignal is not allowed for simulation callbacks 

Function RemoteEvent.FireAllClients is not allowed for simulation callbacks

[dusky sun]

can't do sound:play() either

[trail garden]

Can I go outside the simulation?

[dusky sun]

getting stuff into and out of the simulation is a bit tricky

[trail garden]

Is there a better solution? Like using a aignal module?

[dusky sun]

signal module aint gonna help

the docs mention a few ways to get data in and out of the simulation

wishing you luck, it's not easy

and i would know

because server authority m1 go BRRRRRRRRRRRRRRRRRRRRRRRRRR

[trail garden]

Could you point me to it?

[dusky sun]

https://create.roblox.com/docs/projects/server-authority/techniques

A good strategy for rendering a predicted simulation is to synchronize a state machine pattern within the simulation loop and render changes to the state in a render step function.

can't read it for you bruh 🙃

[trail garden]

Bump

[trail garden]

Another bump

[trail garden]

You know what, fuck server authority. To much of a pain.

[trail garden]

Wait, if you already made it why not just tell me the answer

[dusky sun]

took you 4 days to notice? I did tell you the answer. we got access to the same information bruh. read the docs, I cannot read it for you.

[trail garden]

You did not tell me why animations don't play localy

you just sent me to the usless ahh docs

[dusky sun]

animations do play locally. you just cannot play them from within the simulation

try the ol' humanoid.animator:loadanimation():play()

like if this as a baseline isn't working like normal, and i suggest trying it from the command bar, then you got problems before you even got to the simulation

[trail garden]

wanna know something crazy

[dusky sun]

game.Players:FindFirstChildOfClass("Player").Character.Humanoid.Animator:LoadAnimation(path_to_anim):Play() if that doesn't work then fix this first

[trail garden]

I am using heartbeat

not :BindToSimulation

[dusky sun]

heartbeat is outside the simulation

any math, logic, or physics associated with the simulation must be done inside the simulation.

i know, captain obvious to the rescue amirite

[trail garden]

I am playing the animation there, so why is the animation not playing

that's the core issue

[dusky sun]

maybe your conditions are bad

idk

[dusky sun]

does this work?

[trail garden]

lemmi see

[dusky sun]

coz dont be thinking I made this in a day

it took me like 2 weeks to get it to that point

and its still just a prototype

[trail garden]

yes, it dose

[dusky sun]

yep then your animation is fine 👍 just need to fix your conditions

[trail garden]

The client dose reach the AnimationTrack:Play(), its so weird

[dusky sun]

maybe try it without any time warping

so dont set animtrack.timeposition

just leave it at 0 and play the anim from the start

coz if you're time warping it, and you've got the code wrong, it might be skipping to the end of the animation

[trail garden]

guess what

I am not even loading the animations on the client

AHHHHHHHHHHHHHHHH

I wanna die

[dusky sun]

s1 mistake

[trail garden]

FINNALLY

OH MY GOD

YESSSSSSSSSS

[dusky sun]

actually skill issue

[trail garden]

Also, how come when I use shift lock it bugs out

[dusky sun]

not sure, i disabled shiftlock on mine

[dusky sun]

next step? try your m1 while walking into a part

like so

you can also walk into the npcs

basically it's to reliably trigger a misprediction so you can test your rollback and resim

alternatively, add a small random chance for some variable to deliberately mispredict, e.g set an attribute to the time, but have like a 10% chance to set it to 0.

if it continues to appear smooth even at a low instance prediction success, your rollback and resim is working properly 👍

[dusky sun]

hopefully roblox gives us proper simulation debugging tools instead of just a single 'prediction success rate' number.

but for now you have to do it the hard way.

[dusky sun]

looks good 👍 it can help to bring up the server authority debug window to track your prediction success rate. if it's dropping and looks fine, which it does look fine, then you good

now the next step - actually hitting something

[trail garden]

I am not using bind to simulation, eh, i figure that out later

[trail garden]

Could you check this also?

[dusky sun]

if you are not using bind to simulation then you are not using it properly.

this is what misprediction looks like

[trail garden]

Will animations, sounds, partials, etc be supported in simulations in the future?

[dusky sun]

you can already run animations, sounds, particles etc

[dusky sun]

most likely only animations, otherwise no

[trail garden]

should I wait?

[trail garden]

So I would have a :BindToSimulation loop and a render step loop, what do I use to bridge the connection?

[dusky sun]

the docs tell you how.

[trail garden]

@dusky sun

[dusky sun]

what

[trail garden]

Could you check my script?

Pwitty please

[dusky sun]

what's there to check?

[trail garden]

My ValidateHitbox function

[dusky sun]

what needs to be checked about it?

[trail garden]

If my hitbox validation is correct

[dusky sun]

for server authority? probably not. what is this? CheckHitboxEvent:InvokeServer(RootCFrame, Part, workspace:GetServerTimeNow(), Move)

[trail garden]

It’s for a client sided hitboxes with several validation, that just sends the hitbox data from the client to the server.

[dusky sun]

mmkay, and how does server authority work, in your own words?

[dusky sun]

coz it seems like you missed something rather fundamental; the power of server authority is in clientside prediction; you need to write deterministic hitboxes, you cannot just send hitbox over the network as that defeats the whole point!

you can send hitbox to verify, but roblox already does this as part of server authority

bro missed a memo

the simulation is the resim part of 'rollback and resimulate'

and why workspace:getservertimenow() ?

[dusky sun]

https://create.roblox.com/docs/reference/engine/globals/RobloxGlobals#time

If Workspace.AuthorityMode is Enum.AuthorityMode.Server, this value is synchronized between client and server.

[trail garden]

Wait what

I don’t understand

[dusky sun]

?

[trail garden]

The client tries to predict what the server would do next

[trail garden]

How though