Roblox Universal Player Lock Script

local setting = {
    KeyToActive = Enum.KeyCode.K,
    TurnDeg = 15,
    KeyToTurnOff = Enum.KeyCode.P,
    range = 30
}

local player = game.Players.LocalPlayer
local character = player.Character
local localroot = character:WaitForChild("HumanoidRootPart")
local UIS = game:GetService("UserInputService")

local function closest()
    local target = nil
    for i, v in pairs(game.Players:GetPlayers()) do
        if v ~= player and v.Character then
            local KJ = v.Character:FindFirstChild("HumanoidRootPart")
            if KJ then
                local dist = (localroot.Position - KJ.Position).magnitude
                if dist < setting.range then
                    target = v.Character
                end
            end
        end
    end
    return target
end

local newtarget = closest()
game:GetService("RunService").RenderStepped:Connect(function()
    newtarget = closest()
end)

local active = false

local function ActiveScript()
    if active == true and newtarget then
        local JN = newtarget:FindFirstChild("HumanoidRootPart")
        local JNR = newtarget:FindFirstChildOfClass("Humanoid")
        local distTwo = (localroot.Position - JN.Position).magnitude
        if JN and JNR and JNR.Health > 0 then
            while active and distTwo < setting.range and JNR.Health > 0 do
                game:GetService("RunService").RenderStepped:Wait()
                if distTwo < setting.range then
                    localroot.CFrame = CFrame.lookAt(localroot.Position, JN.Position) * CFrame.Angles(0, math.rad(setting.TurnDeg), 0)
                    distTwo = (localroot.Position - JN.Position).magnitude
                end
            end
        end
    end
end

UIS.InputBegan:Connect(function(input)
    if input.KeyCode == setting.KeyToActive then
        active = true
    elseif input.KeyCode == setting.KeyToTurnOff then
        active = false
    end
end)

game:GetService("RunService").RenderStepped:Connect(function()
    ActiveScript()
end)

game.Players.LocalPlayer.CharacterAdded:Connect(function(char)
    wait(1)
    character = char
    localroot = character:WaitForChild("HumanoidRootPart")
    wait(0.1)
    ActiveScript()
end)