TweenService:Create failed because Instance is null

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#22

Yeah consider asking your fellow builders first because I forgot if PrimaryPart is supposed to act as a “weld”.

#23

Uh no apparently not. Use welds, then assign a PrimaryPart if you want.

#24

i dont know how to make primarypart to currently existing model with no primarypart but i can confirm primarypart acts like root of the model and once root of the model changes position everything inside of that model should change the position too

#25

  1. Insert a part, name it “PrimaryPart”

  2. Put it in the very center of the nuke

  3. Make sure all parts (except PrimaryPart) are unanchored, and have a WeldConstraint in it and its Part0 is the parent part and Part1 is PrimaryPart

  4. Anchor PrimaryPart and make PrimaryPart non collide-able and invisible

  5. Make PrimaryPart the PrimaryPart of the Model (check the Properties window)

  6. You’re done! :scream:

#26

It says unable to cast value to object in the output even though I did all the primary stuff. Can anyone help pleaase

#27

Wait, rename the part from “PrimaryPart” to “Center”.

#28

After that, you can now change RNuke to the PrimaryPart.

local RNuke = workspace.Nuke.PrimaryPart
#29

No errors in the output now, but it doesn’t do anything. It prints what I want it to print after the tween but nothing tweens

#30

bumping cause I STILL need help. All help is appreciated thank you everyone for trying and taking time to help me

#31

Again still need help. Is it possible to make a bunch of meshes one part?

#32

If you group them in blender then yes, otherwise no

#33

Can anyone group some meshes for me in blender pleaase?

#34

You guys could of used “WorldPivot” it is a model’s cframe
Model | Documentation - Roblox Creator Hub

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#35

RNuke is nothing, null is nothing and the reason is because of the way you find the model itself

path:GetChildren().Position

You’re trying to index “Position” in a table (specifically a dictionary), but get children returns an array which doesn’t index values with strings, but numbers.

example of dictionary and array

dictionary = {
["Index"] = Value
}
array = {
[1] = Value
}

So you need to find a completely different way to get RNuke and make sure that it isn’t null (nil) before tweening it

#36

Forget about the PrimaryPart. Delete the PrimaryPart, delete all WeldConstraints, and set all parts in the nuke model as anchored.

I just realized that you can set WorldPivot of the Model, credits to @Doge_boye1

Set RNuke to workspace.Nuke

local RNuke = workspace.Nuke

Now, in newPos2 change part.Position to part.CFrame, and in tween2 change Position to WorldPivot

local newPos2 = part.CFrame + Vector3.new(0,18,0)
local tween2 = TweenS:Create(RNuke, Tween, {WorldPivot = newPos2})
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#37

Now there are no errors in the output but nothing happens

#38

Could anyone please help? I know im dragging this on but if anyone can help I’d appreciate it I’m stuck

#39

Yeah dude no problem.
https://www.lua.org/manual/5.1/manual.html

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#40

you need to

tween2:Play()

then it will work :joy:

#41

grrrrrrr thats vanilla lua manual and not roblox’s luau manual