better dragging

local UserInputService = game:GetService("UserInputService")

local gui = script.Parent

local dragging
local dragInput
local dragStart
local startPos

local function update(input)
	local delta = input.Position - dragStart
	wait() -- remove this line if you don't want the dragging to be smoother
	gui.Position = UDim2.new(startPos.X.Scale, startPos.X.Offset + delta.X, startPos.Y.Scale, startPos.Y.Offset + delta.Y)
end

gui.InputBegan:Connect(function(input)
	if input.UserInputType == Enum.UserInputType.MouseButton1 or input.UserInputType == Enum.UserInputType.Touch then
		dragging = true
		dragStart = input.Position
		startPos = gui.Position

		input.Changed:Connect(function()
			if input.UserInputState == Enum.UserInputState.End then
				dragging = false
			end
		end)
	end
end)

gui.InputChanged:Connect(function(input)
	if input.UserInputType == Enum.UserInputType.MouseMovement or input.UserInputType == Enum.UserInputType.Touch then
		dragInput = input
	end
end)

UserInputService.InputChanged:Connect(function(input)
	if input == dragInput and dragging then
		update(input)
	end
end)