MeshPart Moves Into Camera When Mouse is Idle

[super_marvel1232 (XENITH)]

I made this script that makes when a textbutton is pressed it takesout a meshpart from replicated storage and makes it follow players mouse untul i click on the screen to anchor the meshpart but teres a glitch that makest he meshpart go towards the camera

the localscript

-- Your script here
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local UserInputService = game:GetService("UserInputService")
local RunService = game:GetService("RunService")

local button = script.Parent
local partToPlace
local lastPosition
local camera = workspace.CurrentCamera

button.MouseButton1Click:Connect(function()
	if partToPlace then
		partToPlace:Destroy()
	end

	local part = ReplicatedStorage:FindFirstChild("MeshPart")
	if part then
		partToPlace = part:Clone()
		partToPlace.Parent = workspace
		partToPlace.Transparency = 0.5
		partToPlace.CanCollide = false
		partToPlace.Anchored = true
	else
		warn("MeshPart not found in ReplicatedStorage!")
		return
	end

	local updateConnection
	updateConnection = RunService.RenderStepped:Connect(function()
		if partToPlace then
			local mouseLocation = UserInputService:GetMouseLocation()
			local ray = camera:ScreenPointToRay(mouseLocation.X, mouseLocation.Y)
			local raycastParams = RaycastParams.new()
			raycastParams.FilterDescendantsInstances = {workspace.CurrentCamera}
			raycastParams.FilterType = Enum.RaycastFilterType.Blacklist

			local result = workspace:Raycast(ray.Origin, ray.Direction * 1000, raycastParams)
			local positionToSet

			if result then
				positionToSet = Vector3.new(result.Position.X, result.Position.Y + partToPlace.Size.Y / 2, result.Position.Z)
			elseif lastPosition then
				positionToSet = lastPosition
			else
				positionToSet = ray.Origin + ray.Direction * 10
			end

			partToPlace.Position = positionToSet
			lastPosition = positionToSet
		end
	end)

	UserInputService.InputBegan:Connect(function(input)
		if input.UserInputType == Enum.UserInputType.MouseButton1 then
			if partToPlace then
				partToPlace.Transparency = 0
				partToPlace.CanCollide = true
				partToPlace.Anchored = true
				partToPlace = nil
				updateConnection:Disconnect()
			else
				warn("partToPlace is nil when trying to finalize placement!")
			end
		end
	end)
end)

[redstone_block180 (Red)]

Make the MeshPart not have collision until it is placed.

[NOVEIGMA]

You need to blacklist the meshpart from the raycast, otherwise there’s a feedback loop where the raycast hits the meshpart which then moves closer because the surface of the mesh is closer to the camera.

@super_marvel1232

raycastParams.FilterDescendantsInstances = {workspace.CurrentCamera}

Blacklisting CurrentCamera doesn’t do anything because it’s not a basepart.

[redstone_block180 (Red)]

Both mine and @NOVEIGMA’s solutions should work.