local Players = game:GetService("Players")
local RunService = game:GetService("RunService")

local player = Players.LocalPlayer
local target = nil
local enabled = false
local depth = -5,5

local highlight

-- GUI
local gui = Instance.new("ScreenGui")
gui.Parent = game.CoreGui

local frame = Instance.new("Frame")
frame.Parent = gui
frame.Size = UDim2.new(0,160,0,140)
frame.Position = UDim2.new(0,100,0,200)
frame.BackgroundColor3 = Color3.fromRGB(30,30,30)
frame.Active = true
frame.Draggable = true

local title = Instance.new("TextLabel")
title.Parent = frame
title.Size = UDim2.new(1,0,0,25)
title.Text = "LOC"
title.BackgroundColor3 = Color3.fromRGB(50,50,50)
title.TextColor3 = Color3.new(1,1,1)

-- ô nhập tên
local box = Instance.new("TextBox")
box.Parent = frame
box.Size = UDim2.new(1,-10,0,25)
box.Position = UDim2.new(0,5,0,30)
box.PlaceholderText = "Name..."
box.Text = ""
box.BackgroundColor3 = Color3.fromRGB(60,60,60)
box.TextColor3 = Color3.new(1,1,1)

-- toggle
local toggle = Instance.new("TextButton")
toggle.Parent = frame
toggle.Size = UDim2.new(1,-10,0,25)
toggle.Position = UDim2.new(0,5,0,65)
toggle.Text = "OFF"
toggle.BackgroundColor3 = Color3.fromRGB(150,0,0)
toggle.TextColor3 = Color3.new(1,1,1)

-- tìm player theo chữ đầu
local function findPlayer(name)

	name = string.lower(name)

	for _,plr in pairs(Players:GetPlayers()) do
		if string.sub(string.lower(plr.Name),1,#name) == name then
			return plr
		end
	end

end

-- khi gõ xong
box.FocusLost:Connect(function()

	local plr = findPlayer(box.Text)

	if plr then
		target = plr

		if highlight then
			highlight:Destroy()
		end

		if plr.Character then
			highlight = Instance.new("Highlight")
			highlight.Parent = plr.Character
			highlight.FillTransparency = 1
		end
	end

end)

-- toggle
toggle.MouseButton1Click:Connect(function()

	enabled = not enabled

	if enabled then
		toggle.Text = "ON"
		toggle.BackgroundColor3 = Color3.fromRGB(0,170,0)
	else
		toggle.Text = "OFF"
		toggle.BackgroundColor3 = Color3.fromRGB(150,0,0)
	end

end)

-- rainbow highlight
RunService.Heartbeat:Connect(function()

	if highlight then
		local t = tick()*2
		highlight.OutlineColor = Color3.fromHSV(t%1,1,1)
	end

end)

-- follow
RunService.Heartbeat:Connect(function()

	if enabled and target and player.Character and target.Character then

		local root = player.Character:FindFirstChild("HumanoidRootPart")
		local troot = target.Character:FindFirstChild("HumanoidRootPart")
		local hum = player.Character:FindFirstChild("Humanoid")

		if root and troot and hum then

			hum.AutoRotate = false
			hum.PlatformStand = true

			root.AssemblyLinearVelocity = Vector3.zero
			root.AssemblyAngularVelocity = Vector3.zero

			root.CFrame =
				CFrame.new(
					troot.Position.X,
					troot.Position.Y + depth,
					troot.Position.Z
				) *
				CFrame.Angles(math.rad(90),0,0)

		end

	end

end)