WallLock

-- Toggle U key

local Players = game:GetService("Players")
local UserInputService = game:GetService("UserInputService")
local Camera = workspace.CurrentCamera
local LocalPlayer = Players.LocalPlayer
local BuildEvent = game.ReplicatedStorage.remotes.build

local Enabled = false

UserInputService.InputBegan:Connect(function(Input, GameProcessed)
	if GameProcessed then return end

	if Input.KeyCode == Enum.KeyCode.U then
		Enabled = not Enabled
	end
end)

while task.wait() do
	if Enabled then
		local MousePosition = UserInputService:GetMouseLocation()
		local ClosestPlayer = nil
		local ClosestDistance = math.huge

		for _, Player in ipairs(Players:GetPlayers()) do
			if Player ~= LocalPlayer then
				local Character = Player.Character
				local RootPart = Character and Character:FindFirstChild("HumanoidRootPart")

				if RootPart then
					local ScreenPosition, OnScreen = Camera:WorldToViewportPoint(RootPart.Position)

					if OnScreen then
						local Distance = (Vector2.new(ScreenPosition.X, ScreenPosition.Y) - MousePosition).Magnitude

						if Distance < ClosestDistance then
							ClosestDistance = Distance
							ClosestPlayer = Player
						end
					end
				end
			end
		end

		if ClosestPlayer then
			local Character = ClosestPlayer.Character
			local RootPart = Character and Character:FindFirstChild("HumanoidRootPart")

			if RootPart then
				local HeightOffset = Character:FindFirstChildOfClass("Humanoid") and 0.5 or -0.5

				BuildEvent:FireServer("Wall",RootPart.CFrame*CFrame.new(0,HeightOffset,0)*CFrame.new(0,0,0,-4.3711388286738e-08,1,0,4.3711388286738e-08,1.9106854651647e-15,-1,-1,-4.3711388286738e-08,-4.3711388286738e-08))
			end
		end
	end
end