Model's Parts Not Following HumanoidRootPart's Position

[PsyIex (EATBADGE)]

Ok so im making a model’s primary part (humanoidRootPart) lerp and for some reason the model’s parts are not following the humanoid root part. Iv’e tried changing the model and it gave me the same results. The model needs to be anchored and it has no humanoid whatsoever in it. Any solutions?

Here’s my code that lerps the humanoid root part:

function Move_Enemy(enemy, enemyID)
	for x, node in pairs(workspace.Path.Nodes:GetChildren()) do
		local runTime = 0
		local alpha = 0
		local moveLerp
		local nextNode = workspace.Path.Nodes:FindFirstChild(tostring(x + 1))
		local previousNode = workspace.Path.Nodes:FindFirstChild(tostring(x - 1))
		if not previousNode then previousNode = workspace.Path.StartNode end

		local startCFrame = workspace.Enemies[tostring(enemyID)].HumanoidRootPart.CFrame
		local pathOffset = workspace.Enemies[enemyID]:GetAttribute("PathOffset")
		local nodeAttribute = workspace.Enemies[enemyID]:GetAttribute("Node")
		local pathZOffset = nil
		
		if node:GetAttribute("Direction") == "Left" then pathZOffset = -pathOffset else pathZOffset = pathOffset end
		if not nextNode then pathZOffset = 0 end
		
		local distance = (node.Position - previousNode.Position).Magnitude
		local lerpTime = distance / enemy.Speed

		local nodeOffsetCFrame = node.CFrame * CFrame.new(pathOffset, 0, pathZOffset)

		moveLerp = RunService.Heartbeat:Connect(function(deltaTime)
			task.wait()
			runTime += deltaTime
			alpha = runTime / lerpTime

			workspace.Enemies[tostring(enemyID)].HumanoidRootPart.CFrame = startCFrame:Lerp(nodeOffsetCFrame, alpha)

			if alpha >= 1 then moveLerp:Disconnect() end
		end)
		
		repeat task.wait() until alpha >= 1
		if nextNode then
			workspace.Enemies[enemyID].HumanoidRootPart.CFrame = CFrame.lookAt(workspace.Enemies[enemyID].HumanoidRootPart.Position, nextNode.Position)
		else
			workspace.Enemies[enemyID]:Destroy()
		end
	end
	
end

[Katrist]

Are all the model’s parts welded to the HumanoidRootPart?

Also, try using :PivotTo.

Code:

function Move_Enemy(enemy, enemyID)
	for x, node in pairs(workspace.Path.Nodes:GetChildren()) do
		local runTime = 0
		local alpha = 0
		local moveLerp
		local nextNode = workspace.Path.Nodes:FindFirstChild(tostring(x + 1))
		local previousNode = workspace.Path.Nodes:FindFirstChild(tostring(x - 1))
		if not previousNode then previousNode = workspace.Path.StartNode end

		local startCFrame = workspace.Enemies[tostring(enemyID)].HumanoidRootPart.CFrame
		local pathOffset = workspace.Enemies[enemyID]:GetAttribute("PathOffset")
		local nodeAttribute = workspace.Enemies[enemyID]:GetAttribute("Node")
		local pathZOffset = nil

		if node:GetAttribute("Direction") == "Left" then pathZOffset = -pathOffset else pathZOffset = pathOffset end
		if not nextNode then pathZOffset = 0 end

		local distance = (node.Position - previousNode.Position).Magnitude
		local lerpTime = distance / enemy.Speed

		local nodeOffsetCFrame = node.CFrame * CFrame.new(pathOffset, 0, pathZOffset)

		moveLerp = RunService.Heartbeat:Connect(function(deltaTime)
			task.wait()
			runTime += deltaTime
			alpha = runTime / lerpTime

			workspace.Enemies[tostring(enemyID)]:PivotTo(startCFrame:Lerp(nodeOffsetCFrame, alpha))

			if alpha >= 1 then moveLerp:Disconnect() end
		end)

		repeat task.wait() until alpha >= 1
		if nextNode then
			workspace.Enemies[enemyID].HumanoidRootPart.CFrame = CFrame.lookAt(workspace.Enemies[enemyID].HumanoidRootPart.Position, nextNode.Position)
		else
			workspace.Enemies[enemyID]:Destroy()
		end
	end

end

[PsyIex (EATBADGE)]

yes, they are welded. I thought I couldn’t use :PivotTo on the lerp function.
Im gonna try your suggestion and see the results.

[Katrist]

The :Lerp function just generates a new CFrame. You can use :PivotTo with any CFrame.

[PsyIex (EATBADGE)]

alright. Thanks for the information, and thanks for solving my problem!