Weld doesn't work

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#1

I have 2 parts, Cube1 and Cube2. They are located inside a folder and I want to make a weld so that when one moves, the other will too.

The code that creates the weld is this:

local weld = Instance.new("WeldConstraint")
weld.Name = "CubeWeld"
weld.Part0 = cubeFolder:FindFirstChild("CubePart1")
weld.Part1 = cubeFolder:FindFirstChild("CubePart2")
weld.Parent = cubeFolder:FindFirstChild("CubePart1")

This doesn’t work, of course. So I am asking for help: Anyone knows how to fix this?
(I am moving one cube with a tween and I want the other cube to “stick” to the other one and move with it.)

#2

Could you please show the code you are using to tween the parts?

#3

U need to tween the primary part of the model as I remember

#4

It’s not a model. It’s just 2 seperate parts.

#5

To tween a weld you need to tween the CFrame. Your previous post was the same exact issue.

#6

I am just tweeing CubePart1, moving it and rotating it.

#7

Yes so I asked how to fix it and no one helped me so I thought I will repost…

#8

When I use CFrame in the tweenings I need to specify the lookAt vector, but I don’t know where it’s looking at I just know the degrees I want it to rotate.

#9

Could you explain more of what you are trying to achieve?

#10

I am trying to make it so that when CubePart1 moves the other cube will stick to it. I am moving CubePart1 by tweening, whenever the player presses a certain key.

image

(CubePart1 is the bottom cube, CubePart2 is on top of it.)

#11

I’m not sure exactly why CFrame would not be an option? But it will be required if you want to tween objects with welds.

#12

Because you create a CFrame for the tween goal.
I am tweening orientation and position, and I know how much degrees I want to rotate it by how would I know where it’s facing?

#13

I’m not sure. All I know is how your game creates a weld. If you could please provide additional code to get an understanding of what movements you are making the part do it would help.

#14

Here you go, this is the tweening code:

function tweens.TweenCube(direction)
	if not inMotion then
		inMotion = true
		if direction == "UP" then
			if isHorizontal then

			else
				local tweenInfo = TweenInfo.new(
					0.5,
					Enum.EasingStyle.Linear,
					Enum.EasingDirection.Out,
					0,
					false,
					0
				)
				local tweenProperties = {
					CFrame = CFrame.new(Vector3.new(mainPart.Position.X + 4, mainPart.Position.Y, mainPart.Position.Z)) * CFrame.Angles(math.rad(mainPart.Orientation.X), math.rad(mainPart.Orientation.Y), math.rad(mainPart.Orientation.Z) - math.rad(90)),
				}
				local cubeTween = TweenService:Create(mainPart, tweenInfo, tweenProperties)
				
				cubeTween:Play()
				cubeTween.Completed:Wait()
				
				mainPart.Orientation = Vector3.new(0, 0, 0)
			end
		elseif direction == "DOWN" then
			if isHorizontal then
				
			else
				local tweenInfo = TweenInfo.new(
					0.5,
					Enum.EasingStyle.Linear,
					Enum.EasingDirection.Out,
					0,
					false,
					0
				)
				local tweenProperties = {
					CFrame = CFrame.new(Vector3.new(mainPart.Position.X - 4, mainPart.Position.Y, mainPart.Position.Z)) * CFrame.Angles(math.rad(mainPart.Orientation.X), math.rad(mainPart.Orientation.Y), math.rad(mainPart.Orientation.Z) + math.rad(90)),
				}
				local cubeTween = TweenService:Create(mainPart, tweenInfo, tweenProperties)
				cubeTween:Play()
				cubeTween.Completed:Wait()
				mainPart.Orientation = Vector3.new(0, 0, 0)
			end
		elseif direction == "RIGHT" then
			if isHorizontal then
				
			else
				local tweenInfo = TweenInfo.new(
					0.5,
					Enum.EasingStyle.Linear,
					Enum.EasingDirection.Out,
					0,
					false,
					0
				)
				local tweenProperties = {
					CFrame = CFrame.new(Vector3.new(mainPart.Position.X, mainPart.Position.Y, mainPart.Position.Z + 4)) * CFrame.Angles(math.rad(mainPart.Orientation.X) + math.rad(90), math.rad(mainPart.Orientation.Y), math.rad(mainPart.Orientation.Z)),
				}
				local cubeTween = TweenService:Create(mainPart, tweenInfo, tweenProperties)
				cubeTween:Play()
				cubeTween.Completed:Wait()
				mainPart.Orientation = Vector3.new(0, 0, 0)
			end
		elseif direction == "LEFT" then
			if isHorizontal then
				
			else
				if isHorizontal then
					
				else
					local tweenInfo = TweenInfo.new(
						0.5,
						Enum.EasingStyle.Linear,
						Enum.EasingDirection.Out,
						0,
						false,
						0
					)
					local tweenProperties = {
						CFrame = CFrame.new(Vector3.new(mainPart.Position.X, mainPart.Position.Y, mainPart.Position.Z - 4)) * CFrame.Angles(math.rad(mainPart.Orientation.X) - math.rad(90), math.rad(mainPart.Orientation.Y), math.rad(mainPart.Orientation.Z)),
					}
					local cubeTween = TweenService:Create(mainPart, tweenInfo, tweenProperties)
					cubeTween:Play()
					cubeTween.Completed:Wait()
					mainPart.Orientation = Vector3.new(0, 0, 0)
				end
			end
		end
		inMotion = false
	end
end
#15

I am basically rotating and moving the cube at the same time so it would look like it’s rolling.

#16

Just follow this tutorial: Introduction to Tweening Models

#17

I am not trying to tween them both, I am only trying to tween CubePart1 so that CubePart2 will stick to it.

#18

I just changed it to CFrame but it still doesn’t work.
(Also edited the code I sent now)