Unable to cast to dictionary

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1

Hey everyone! So this keeps happening to me when I make a tween, not all the time, but sometimes. whenever I write a script, and play the tween, it always says “Unable to cast to Dictionary” I have looked in the object browser and I’ve been trying to figure it out but I can’t seem to figure it out. Here is my script, the error happens when I make the properties.

local TweenService = game:GetService("TweenService")

local part = script.Parent

local info = TweenInfo.new(1,Enum.EasingStyle.Back,Enum.EasingDirection.Out)

local properties = {part.CFrame * CFrame.Angles(math.rad(75), math.rad(180), math.rad(-90))}
local prop = {part.CFrame * CFrame.Angles(math.rad(75), math.rad(0), math.rad(90))}

local tween = TweenService:Create(part,info,properties)
local Tween = TweenService:Create(part,info,prop)

while true do
	tween:Play()
	wait(3)
	Tween:play()
	wait()
end

If anyone can help me for the future, that would be great :)))

2 Likes
2

It’s because you never actually cast to the CFrame inside of the properties dictionary, all you do is tell the code about a CFrame value.

Revised Code:

local TweenService = game:GetService("TweenService")
local info = TweenInfo.new(1, Enum.EasingStyle.Back, Enum.EasingDirection.Out)

local part = script.Parent

local tween1, tween2 = nil

do
    local properties = {
        CFrame = part.CFrame * CFrame.Angles(math.rad(75), math.rad(180), math.rad(-90))
    }
    tween1 = TweenService:Create(part, info, properties)
end

do
    local properties = {
        CFrame = part.CFrame * CFrame.Angles(math.rad(75), math.rad(0), math.rad(90))
    }
    tween2 = TweenService:Create(part, info, properties)
end

while true do — you should avoid loops like this in general, but that’s for you to change

    tween1:Play()
    wait(3) — you can also use tween1.Completed:Wait() if you want to play it when the first tween is completed
    tween2:Play()
    — there’s no point in adding a wait() here, you’re already yielding, I suggest you wait for the tween to complete.
end
3

That doesn’t seem to work, it says that Workspace.Eye.Script:25: attempt to index nil with ‘Play’

4

I changed @xKaihatsu’s script a bit

local TweenService = game:GetService("TweenService")
local info = TweenInfo.new(1, Enum.EasingStyle.Back, Enum.EasingDirection.Out)

local part = script.Parent
local tween1, tween2 

do
	local properties = {
		CFrame = part.CFrame * CFrame.Angles(math.rad(75), math.rad(180), math.rad(-90))
	}
	tween1 = TweenService:Create(part, info, properties)
end

do
	local properties = {
		CFrame = part.CFrame * CFrame.Angles(math.rad(75), math.rad(0), math.rad(90))
	}
	tween2 = TweenService:Create(part, info, properties)
end

while true do 
	wait(2)
	tween1:Play()
	wait(2) 
	tween2:Play()
end

It seemed to work for me

5

ok, yes, that worked, but, do you know how to make it go to right to left? because I’m not really sure how to do that with the angles lol

1 Like
6

Change

local properties = {part.CFrame * CFrame.Angles(math.rad(75), math.rad(180), math.rad(-90))}
local prop = {part.CFrame * CFrame.Angles(math.rad(75), math.rad(0), math.rad(90))}

to

local properties = {CFrame * CFrame.Angles(math.rad(75), math.rad(180), math.rad(-90))}
local prop = {CFrame * CFrame.Angles(math.rad(75), math.rad(0), math.rad(90))}
7 
local TweenService = game:GetService("TweenService")
local info = TweenInfo.new(1, Enum.EasingStyle.Back, Enum.EasingDirection.Out)

local part = script.Parent
local tween1, tween2 


do
	local properties = {
		CFrame = part.CFrame * CFrame.Angles(0, 0, 10)
	}
	tween1 = TweenService:Create(part, info, properties)
end

do 
	local properties = {
		CFrame = part.CFrame * CFrame.Angles(0, 0, -10)
	}
	tween2 = TweenService:Create(part, info, properties)
end

while true do 
	wait(2)
	tween1:Play()
	wait(2) 
	tween2:Play()
end

Just copy and paste the Orientation of your choice into one of your tweens

1 Like
8

Also if you really want, here’s it a bit simplified.

local TweenService = game:GetService("TweenService")
local info = TweenInfo.new(1, Enum.EasingStyle.Back, Enum.EasingDirection.Out)

local part = script.Parent
local tween1, tween2 

	local prop1 = {CFrame = part.CFrame * CFrame.Angles(0, 0, 10)}
	local prop2 = {CFrame = part.CFrame * CFrame.Angles(0, 0, -10)}
	tween1 = TweenService:Create(part, info, prop1)	
	tween2 = TweenService:Create(part, info, prop2)

while true do 
	wait(2)
	tween1:Play()
	wait(2) 
	tween2:Play()
end