local UIS = game:GetService("UserInputService")
local Players = game:GetService("Players")
local LocalPlayer = Players.LocalPlayer
local Camera = workspace.CurrentCamera
local AimlockEnabled = false
local TargetPart = "RightUpperLeg"
local playerIndex = 1
local playerList = {}
local currentTarget = nil

-- Function to update the list of targetable players
local function updatePlayerList()
    playerList = {}
    for _, player in pairs(Players:GetPlayers()) do
        if player ~= LocalPlayer and player.Character and player.Character:FindFirstChild(TargetPart) and player.Character.Humanoid.Health > 0 then
            table.insert(playerList, player)
        end
    end
end

-- Function to get the next player in the list
local function getNextPlayer()
    if #playerList == 0 then return nil end
    playerIndex = playerIndex % #playerList + 1
    return playerList[playerIndex]
end

-- Aimlock function
local function aimlock()
    if AimlockEnabled then
        if not currentTarget or not currentTarget.Character or not currentTarget.Character:FindFirstChild(TargetPart) or currentTarget.Character.Humanoid.Health <= 0 then
            currentTarget = getNextPlayer()
        end

        if currentTarget and currentTarget.Character:FindFirstChild(TargetPart) then
            local aimPart = currentTarget.Character[TargetPart]
            local offset = Vector3.new(0, 0.5, 0) -- Adjust the offset for smoother transitions
            Camera.CFrame = CFrame.new(Camera.CFrame.Position, aimPart.Position + offset)
        end
    end
end

-- Function to create the GUI
local function createGui()
    -- Check if GUI already exists
    if LocalPlayer:FindFirstChild("PlayerGui"):FindFirstChild("AimlockScreenGui") then
        return
    end

    local ScreenGui = Instance.new("ScreenGui")
    ScreenGui.Name = "AimlockScreenGui"
    local AimlockButton = Instance.new("TextButton")

    ScreenGui.Parent = LocalPlayer:WaitForChild("PlayerGui")

    AimlockButton.Size = UDim2.new(0, 100, 0, 50)
    AimlockButton.Position = UDim2.new(0.5, -50, 0.5, -25)
    AimlockButton.Text = "aimlock"
    AimlockButton.TextColor3 = Color3.new(0, 0, 0)
    AimlockButton.BackgroundColor3 = Color3.new(1, 1, 1)
    AimlockButton.BackgroundTransparency = 0.5
    AimlockButton.Parent = ScreenGui

    -- Make GUI draggable
    local dragging
    local dragStart
    local startPos

    AimlockButton.InputBegan:Connect(function(input)
        if input.UserInputType == Enum.UserInputType.Touch then
            dragging = true
            dragStart = input.Position
            startPos = AimlockButton.Position
        end
    end)

    AimlockButton.InputChanged:Connect(function(input)
        if input.UserInputType == Enum.UserInputType.Touch and dragging then
            local delta = input.Position - dragStart
            AimlockButton.Position = UDim2.new(0, startPos.X.Offset + delta.X, 0, startPos.Y.Offset + delta.Y)
        end
    end)

    AimlockButton.InputEnded:Connect(function(input)
        if input.UserInputType == Enum.UserInputType.Touch then
            dragging = false
        end
    end)

    -- Chroma Rainbow Effect
    spawn(function()
        while true do
            for hue = 0, 255 do
                AimlockButton.BackgroundColor3 = Color3.fromHSV(hue / 255, 1, 1)
                wait(0.01)
            end
        end
    end)

    -- Toggle Aimlock
    AimlockButton.MouseButton1Click:Connect(function()
        AimlockEnabled = not AimlockEnabled
        if AimlockEnabled then
            AimlockButton.Text = "aimlock//on"
        else
            AimlockButton.Text = "aimlock//off"
        end
    end)
end

-- Update player list periodically
spawn(function()
    while true do
        updatePlayerList()
        wait(1)
    end
end)

-- Aimlock loop
game:GetService("RunService").RenderStepped:Connect(aimlock)

-- Create the GUI
createGui()