local Players = game:GetService("Players")
local RunService = game:GetService("RunService")
local UserInputService = game:GetService("UserInputService")
local LocalPlayer = Players.LocalPlayer

local active = false
local connection = nil
local targetPart = nil

local function getPartUnderneath()
    local character = LocalPlayer.Character
    if not character then return nil end
    local rootPart = character:FindFirstChild("HumanoidRootPart")
    if not rootPart then return nil end

    local raycastParams = RaycastParams.new()
    raycastParams.FilterType = Enum.RaycastFilterType.Exclude
    raycastParams.FilterDescendantsInstances = {character}
    raycastParams.IgnoreWater = true

    local raycastResult = game.Workspace:Raycast(rootPart.Position, Vector3.new(0, -20, 0), raycastParams)
    if raycastResult and raycastResult.Instance and raycastResult.Instance:IsA("BasePart") then
        return raycastResult.Instance
    end
    return nil
end

local function startLock()
    targetPart = getPartUnderneath()
    if not targetPart then 
        print("Failed: No Part found underneath")
        active = false
        return 
    end
    
    local character = LocalPlayer.Character or LocalPlayer.CharacterAdded:Wait()
    local rootPart = character:WaitForChild("HumanoidRootPart")
    local offset = Vector3.new(0, 3.5, 0)
    
    connection = RunService.Heartbeat:Connect(function()
        if active and character and character.Parent and targetPart and targetPart.Parent then
            local targetPosition = targetPart.Position + offset
            local currentRotation = rootPart.CFrame - rootPart.CFrame.Position
            
            rootPart.CFrame = currentRotation + targetPosition
            
            rootPart.AssemblyLinearVelocity = Vector3.zero
            rootPart.AssemblyAngularVelocity = Vector3.zero
        else
            if connection then
                connection:Disconnect()
                connection = nil
            end
        end
    end)
    print("Locked Onto Underneath Part")
end

local function stopLock()
    active = false
    if connection then
        connection:Disconnect()
        connection = nil
    end
    targetPart = nil
    print("Unlocked")
end

UserInputService.InputBegan:Connect(function(input, gameProcessed)
    if gameProcessed then return end
    if input.KeyCode == Enum.KeyCode.Z then
        active = not active
        if active then
            startLock()
        else
            stopLock()
        end
    end
end)