local player = game:GetService("Players").LocalPlayer
local playerGui = player:WaitForChild("PlayerGui")
local players = game:GetService("Players")
local runService = game:GetService("RunService")

-- Tạo GUI
local screenGui = Instance.new("ScreenGui")
screenGui.Name = "DashGui"
screenGui.ResetOnSpawn = false
screenGui.Parent = playerGui

local button = Instance.new("TextButton")
button.Size = UDim2.new(0, 140, 0, 50)
button.Position = UDim2.new(0.5, -70, 0.8, 0)
button.Text = "Supa Tech"
button.TextScaled = true
button.BackgroundColor3 = Color3.fromRGB(30, 144, 255)
button.TextColor3 = Color3.new(1, 1, 1)
button.Font = Enum.Font.GothamBold
button.Parent = screenGui
button.Active = true
button.Draggable = true

-- Hàm tìm người gần nhất
local function getNearestPlayer()
    local nearest = nil
    local shortest = math.huge
    local myChar = player.Character
    local myRoot = myChar and myChar:FindFirstChild("HumanoidRootPart")
    if not myRoot then return nil end

    for _, other in pairs(players:GetPlayers()) do
        if other ~= player and other.Character then
            local root = other.Character:FindFirstChild("HumanoidRootPart")
            if root then
                local dist = (root.Position - myRoot.Position).Magnitude
                if dist < shortest and dist <= 50 then
                    shortest = dist
                    nearest = root
                end
            end
        end
    end
    return nearest
end

-- Khi ấn nút
button.MouseButton1Click:Connect(function()
    local character = player.Character or player.CharacterAdded:Wait()
    local root = character:WaitForChild("HumanoidRootPart")

    -- Gửi FireServer
    local args = {
        [1] = {
            ["Dash"] = Enum.KeyCode.W,
            ["Key"] = Enum.KeyCode.Q,
            ["Goal"] = "KeyPress"
        }
    }
    character.Communicate:FireServer(unpack(args))

    -- Sau 0.3 giây: quay ngược + bắt đầu lock
    task.delay(0.3, function()
        local reversedLook = -root.CFrame.LookVector
        root.CFrame = CFrame.new(root.Position, root.Position + reversedLook)

        -- Bắt đầu lock hướng
        local conn
        conn = runService.RenderStepped:Connect(function()
            local target = getNearestPlayer()
            if target then
                local myPos = root.Position
                local targetPos = target.Position
                root.CFrame = CFrame.new(myPos, Vector3.new(targetPos.X, myPos.Y, targetPos.Z))
            end
        end)

        -- Tắt lock sau 0.1 giây
        task.delay(1, function()
            if conn then conn:Disconnect() end
        end)
    end)
end)