How to check if a tween is finished?

[nukeKingluke (VueJS)]

I remember seeing some function or whatever its called, that waits for a tween to finish playing. Unless I’m delusional, but I can’t seem to find it anywhere in the documentation.

--[services]--

local TweenService = game:GetService("TweenService")

--[variables]--

local grad = script.Parent.UIGradient
local gradRotateTi = TweenInfo.new(2, 
	Enum.EasingStyle.Linear,
	Enum.EasingDirection.In,
	0)

local gradRotate1 = TweenService:Create(grad, gradRotateTi, {Rotation = 180})
local gradRotate2 = TweenService:Create(grad, gradRotateTi, {Rotation = 0})


--[functions]--

function gradLoop()
	while true do
		grad.Rotation = 0
		gradRotate1:Play()
		 if grad.Rotation == 180 then
		    grad.Rotation = -180
			gradRotate2:Play()
		end
		task.wait(gradRotate2) -- How to wait for tween to finish tweening?
end

--[Start of file]--

if script.Parent.Visible == true then 
		gradLoop()
		print("Useless script is successfully running or you're blind.") -- but it isn't..so..
	end
end

I know I could probably use an if statement to check the rotation value or simply wait for the tween time of 2, but it just seems unproductive and I want to learn more efficient functions that I can use in the future.

Currently the print statement doesn’t even output so I am quite sure this is the issue here…

[SomeFedoraGuy (octav)]

Tween.Completed:Wait()

[Orbular3]

TweenBase | Documentation - Roblox Creator Hub

[nukeKingluke (VueJS)]

Hold up, I’ve implemented the changes

function gradLoop()
	while true do
		grad.Rotation = 0
		gradRotate1:Play()
		if gradRotate1.Completed:wait() then
			gradRotate2:Play()
		end
		gradRotate2.Completed:wait()
end

But it still seems that the tween isn’t working…any idea what might be the issue? Or is this not the way to use it.

[drlandru]

You don’t need to add the if statements, its basically just waiting for the tween to finish

[unidentifiedObject51 (日本語)]

I noticed 2 issues, W isn’t capitalized when doing gradRotate1.Completed:Wait() and I noticed that the function “gradLoop” doesn’t end. maybe this could work:

function gradLoop()
	while true do
		grad.Rotation = 0
		gradRotate1:Play()
		gradRotate1.Completed:Wait()
		gradRotate2:Play()
		gradRotate2.Completed:Wait()
	end
end

[nukeKingluke (VueJS)]

yep I overlooked…thanks for pointing it out. Its working now, just a little too fast.

Just another question: Is there a better way to rotate the entire gradient like 360 instead of using 2 separate tweens?