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

local player = Players.LocalPlayer

--------------------------------------------------
-- GUI
--------------------------------------------------

local gui = Instance.new("ScreenGui")
gui.Name = "SpeedGui"
gui.ResetOnSpawn = false
gui.Parent = player:WaitForChild("PlayerGui")

local frame = Instance.new("Frame")
frame.Size = UDim2.new(0, 260, 0, 150)
frame.Position = UDim2.new(0.5, -130, 0.5, -75)
frame.BackgroundColor3 = Color3.fromRGB(35,35,35)
frame.Active = true
frame.Draggable = true
frame.Parent = gui
Instance.new("UICorner", frame)

local title = Instance.new("TextLabel")
title.Size = UDim2.new(1,0,0,35)
title.BackgroundTransparency = 1
title.Text = "WalkSpeed Controller"
title.TextColor3 = Color3.new(1,1,1)
title.TextScaled = true
title.Parent = frame

local box = Instance.new("TextBox")
box.Size = UDim2.new(0.8,0,0,35)
box.Position = UDim2.new(0.1,0,0.4,0)
box.PlaceholderText = "16 = normal"
box.TextScaled = true
box.Parent = frame
Instance.new("UICorner", box)

local button = Instance.new("TextButton")
button.Size = UDim2.new(0.8,0,0,35)
button.Position = UDim2.new(0.1,0,0.7,0)
button.Text = "Aplicar"
button.TextScaled = true
button.BackgroundColor3 = Color3.fromRGB(0,170,255)
button.TextColor3 = Color3.new(1,1,1)
button.Parent = frame
Instance.new("UICorner", button)

--------------------------------------------------
-- SISTEMA DE VELOCIDAD ESTABLE
--------------------------------------------------

local desiredSpeed = 16
local humanoidConnection
local heartbeatConnection

local function setupCharacter(character)
	local humanoid = character:WaitForChild("Humanoid")
	
	-- Aplicar inmediatamente
	humanoid.WalkSpeed = desiredSpeed
	
	-- Si algo intenta cambiar WalkSpeed, lo restauramos
	if humanoidConnection then
		humanoidConnection:Disconnect()
	end
	
	humanoidConnection = humanoid:GetPropertyChangedSignal("WalkSpeed"):Connect(function()
		if humanoid.WalkSpeed ~= desiredSpeed then
			humanoid.WalkSpeed = desiredSpeed
		end
	end)
	
	-- Refuerzo extra (por si algún script lo fuerza constantemente)
	if heartbeatConnection then
		heartbeatConnection:Disconnect()
	end
	
	heartbeatConnection = RunService.Heartbeat:Connect(function()
		if humanoid and humanoid.Parent then
			if humanoid.WalkSpeed ~= desiredSpeed then
				humanoid.WalkSpeed = desiredSpeed
			end
		end
	end)
end

--------------------------------------------------
-- BOTÓN
--------------------------------------------------

button.MouseButton1Click:Connect(function()
	local value = tonumber(box.Text)
	if value and value > 0 and value <= 200 then
		desiredSpeed = value
		
		if player.Character then
			local hum = player.Character:FindFirstChildOfClass("Humanoid")
			if hum then
				hum.WalkSpeed = desiredSpeed
			end
		end
	end
end)

--------------------------------------------------
-- EVENTOS
--------------------------------------------------

player.CharacterAdded:Connect(setupCharacter)

if player.Character then
	setupCharacter(player.Character)
end