-- LocalScript (place this in StarterPlayer > StarterPlayerScripts)

local Players = game:GetService("Players")
local player = Players.LocalPlayer

-- Create the ScreenGui
local screenGui = Instance.new("ScreenGui")
screenGui.Name = "SpeedBoosterGui"
screenGui.ResetOnSpawn = false
screenGui.Parent = player:WaitForChild("PlayerGui")

-- Create the centered button
local button = Instance.new("TextButton")
button.Name = "BoostButton"
button.Size = UDim2.new(0, 300, 0, 100)
button.Position = UDim2.new(0.5, 0, 0.5, 0)
button.AnchorPoint = Vector2.new(0.5, 0.5)
button.BackgroundColor3 = Color3.fromRGB(0, 170, 255)
button.TextColor3 = Color3.new(1, 1, 1)
button.Font = Enum.Font.GothamBold
button.TextSize = 24
button.Text = "Activate Speed Boost\n(Max 200)"
button.Parent = screenGui

-- Optional: add rounded corners
local corner = Instance.new("UICorner")
corner.CornerRadius = UDim.new(0, 12)
corner.Parent = button

-- Speed settings
local NORMAL_SPEED = 16
local BOOST_SPEED = 200
local boosted = false

-- Function to apply current speed
local function applySpeed()
    if player.Character and player.Character:FindFirstChild("Humanoid") then
        player.Character.Humanoid.WalkSpeed = boosted and BOOST_SPEED or NORMAL_SPEED
    end
end

-- Button click: toggle boost
button.MouseButton1Click:Connect(function()
    boosted = not boosted
    
    if boosted then
        button.Text = "Deactivate Speed Boost\n(Current: 200)"
        button.BackgroundColor3 = Color3.fromRGB(255, 50, 50)
    else
        button.Text = "Activate Speed Boost\n(Max 200)"
        button.BackgroundColor3 = Color3.fromRGB(0, 170, 255)
    end
    
    applySpeed()
end)

-- Apply speed on character spawn/respawn
player.CharacterAdded:Connect(function(character)
    local humanoid = character:WaitForChild("Humanoid")
    humanoid.WalkSpeed = boosted and BOOST_SPEED or NORMAL_SPEED
    
    -- If they die and respawn while boosted, keep it active
    humanoid.Died:Connect(function()
        -- Boost state persists across deaths
    end)
end)

-- Initial apply if character already exists
if player.Character then
    applySpeed()
end