How do i convert "FPS" 0-60 to seconds?

[Vortexuel560 (Bungar)]

i have a viewport frmae and i want the user to be able to set its FPS (aka how fast it clones everything in workspace into the frame)

I want it so doing “/FPS 60” would make the task.wait to reset the frame to be 0 seconds
and “/FPS 1” to make it update 1 time every second.

Sorry if this was not a good explanation, if you need a better one ill try to make it better

[RDJpower]

Do your users have to chat “/FPS {number}” for it to work?

[NyrionDev (Nyrion)]

local seconds = 1/FPS
task.wait(seconds)

[S_undown]

@Vortexuel560

i have a viewport frmae and i want the user to be able to set its FPS

You’ll have to do it your own way using what is effectively a diet version of RenderStepped and seeing how much time has elapsed.

Hook your script to RenderStepped Heartbeat, and gradually add up the time deltas between each frame until it either meets or exceeds 1/targetFPS. Once you do that, you can pass that cumulative delta into the function you use to update your viewport frame.

Edit: I pressed the post button too early. Here’s a code sample:

local RunService = game:GetService("RunService")
local targetFramerate = 60 -- i assume you'll hook this up later
local cumulativeDelta = 0 -- initializing

localViewportUpdateService = RunService.Heartbeat:Connect(function(step)
    cumulativeDelta = cumulativeDelta + step

    if cumulativeDelta >= 1/targetFramerate then
        updateMyViewportFrame(cumulativeDelta) -- replace this with your function you're using to update your viewport frame! you should already be ingesting a deltatime as is
        cumulativeDelta = cumulativeDelta%(1/targetFramerate) -- this is a modulo! if you know basic division, this gets the remainder. effectively we're preserving the amount of time
                                                              -- we overshot so we can correctly catch the next "frame". alternatively we can just go back to 0, but that might mean going out of sync
    end
end)

local function cleanUpRunServiceConnections() -- run this to clean up after yourself when you no longer need to constantly run this!
    localViewportUpdateService:Disconnect()
end

I thoroughly apologize, this code is probably super crusty, but this should give you a general idea on where to get started.

[Geolio9 (Tomate)]

This should be the accepted answer. This is the correct math.