local Players = game:GetService("Players")
local UserInputService = game:GetService("UserInputService")
local Camera = workspace.CurrentCamera
local LocalPlayer = Players.LocalPlayer

-- UI를 CoreGui에 생성하여 플레이어가 죽어도 유지되게 처리
local screenGui = Instance.new("ScreenGui")
screenGui.Name = "FollowPlayerUI"
screenGui.Parent = game:GetService("CoreGui") -- CoreGui에 UI 생성

-- "Made by 랑이" 텍스트 생성
local madeByLabel = Instance.new("TextLabel")
madeByLabel.Name = "MadeByLabel"
madeByLabel.Size = UDim2.new(0.4, 0, 0.1, 0)
madeByLabel.Position = UDim2.new(0.3, 0, 0.45, 0)
madeByLabel.Text = "Made by 랑이"
madeByLabel.TextColor3 = Color3.fromRGB(255, 255, 255)
madeByLabel.Font = Enum.Font.GothamBold
madeByLabel.TextSize = 48
madeByLabel.TextScaled = true
madeByLabel.BackgroundTransparency = 0.4
madeByLabel.BackgroundColor3 = Color3.fromRGB(0, 0, 0)
madeByLabel.TextStrokeTransparency = 0.8
madeByLabel.TextStrokeColor3 = Color3.fromRGB(255, 255, 255)
madeByLabel.Parent = screenGui

-- 텍스트 배경 그라데이션 효과
local gradient = Instance.new("UIGradient")
gradient.Parent = madeByLabel
gradient.Color = ColorSequence.new({
    ColorSequenceKeypoint.new(0, Color3.fromRGB(255, 0, 255)),
    ColorSequenceKeypoint.new(0.5, Color3.fromRGB(0, 255, 255)),
    ColorSequenceKeypoint.new(1, Color3.fromRGB(0, 0, 255))
})
gradient.Rotation = 45

local corner = Instance.new("UICorner")
corner.CornerRadius = UDim.new(0.4, 0)
corner.Parent = madeByLabel

local shadow = Instance.new("Frame")
shadow.Name = "Shadow"
shadow.Size = madeByLabel.Size + UDim2.new(0, 15, 0, 15)
shadow.Position = madeByLabel.Position + UDim2.new(0, 7, 0, 7)
shadow.BackgroundColor3 = Color3.fromRGB(0, 0, 0)
shadow.BackgroundTransparency = 0.5
shadow.ZIndex = madeByLabel.ZIndex - 1
shadow.Parent = screenGui

local shadowCorner = Instance.new("UICorner")
shadowCorner.CornerRadius = UDim.new(0.4, 0)
shadowCorner.Parent = shadow

-- 텍스트 등장 애니메이션
local tweenService = game:GetService("TweenService")
local tweenInfo = TweenInfo.new(1, Enum.EasingStyle.Bounce, Enum.EasingDirection.Out, 0, false, 0)
local goal = {Size = UDim2.new(0.4, 0, 0.1, 0), TextTransparency = 0}
local tween = tweenService:Create(madeByLabel, tweenInfo, goal)
tween:Play()

-- 텍스트와 배경 서서히 사라짐
local fadeOutTweenInfo = TweenInfo.new(2, Enum.EasingStyle.Linear, Enum.EasingDirection.Out, 0, false, 0)
local fadeOutGoal = {TextTransparency = 1}
local fadeOutTween = tweenService:Create(madeByLabel, fadeOutTweenInfo, fadeOutGoal)
local fadeOutGoalBackground = {BackgroundTransparency = 1}
local fadeOutTweenBackground = tweenService:Create(madeByLabel, fadeOutTweenInfo, fadeOutGoalBackground)

wait(1)
fadeOutTween:Play()
fadeOutTweenBackground:Play()

fadeOutTween.Completed:Connect(function()
    madeByLabel:Destroy()
end)

fadeOutTweenBackground.Completed:Connect(function()
    shadow:Destroy()
end)

-- 버튼 생성
local followButton = Instance.new("TextButton")
followButton.Name = "FollowButton"
followButton.Size = UDim2.new(0.2, 0, 0.1, 0)
followButton.Position = UDim2.new(0.01, 0, 0.85, 0)
followButton.Text = "Enable Follow"
followButton.TextColor3 = Color3.fromRGB(255, 255, 255)
followButton.Font = Enum.Font.GothamBold
followButton.TextScaled = true
followButton.TextStrokeTransparency = 0.5
followButton.TextStrokeColor3 = Color3.fromRGB(0, 0, 0)
followButton.Parent = screenGui

-- 버튼 그라데이션 배경
local gradientButton = Instance.new("UIGradient")
gradientButton.Parent = followButton
gradientButton.Color = ColorSequence.new({
    ColorSequenceKeypoint.new(0, Color3.fromRGB(0, 150, 255)),
    ColorSequenceKeypoint.new(1, Color3.fromRGB(0, 75, 135))
})
gradientButton.Rotation = 45

local cornerButton = Instance.new("UICorner")
cornerButton.CornerRadius = UDim.new(0.3, 0)
cornerButton.Parent = followButton

local shadowButton = Instance.new("Frame")
shadowButton.Name = "Shadow"
shadowButton.Size = followButton.Size + UDim2.new(0, 10, 0, 10)
shadowButton.Position = followButton.Position + UDim2.new(0, 5, 0, 5)
shadowButton.BackgroundColor3 = Color3.fromRGB(0, 0, 0)
shadowButton.BackgroundTransparency = 0.5
shadowButton.ZIndex = followButton.ZIndex - 1
shadowButton.Parent = screenGui

local shadowButtonCorner = Instance.new("UICorner")
shadowButtonCorner.CornerRadius = UDim.new(0.3, 0)
shadowButtonCorner.Parent = shadowButton

-- 기능 활성화/비활성화
local isFollowingEnabled = false

followButton.MouseButton1Click:Connect(function()
    isFollowingEnabled = not isFollowingEnabled
    if isFollowingEnabled then
        followButton.Text = "Disable Follow"
        followButton.BackgroundColor3 = Color3.fromRGB(255, 0, 0) -- 빨간색
    else
        followButton.Text = "Enable Follow"
        followButton.BackgroundColor3 = Color3.fromRGB(0, 150, 255) -- 파란색
    end
end)

-- 마우스 우클릭 관련
local isRightMouseHeld = false
local targetPlayer = nil

-- 마우스 우클릭 시작
UserInputService.InputBegan:Connect(function(input)
    if input.UserInputType == Enum.UserInputType.MouseButton2 and isFollowingEnabled then
        isRightMouseHeld = true

        -- 가장 가까운 플레이어 탐색
        local closestPlayer = nil
        local closestDistance = math.huge

        for _, player in pairs(Players:GetPlayers()) do
            if player ~= LocalPlayer and player.Character and player.Character:FindFirstChild("Head") then
                local head = player.Character.Head
                local headScreenPosition, onScreen = Camera:WorldToScreenPoint(head.Position)

                if onScreen then
                    local mousePosition = UserInputService:GetMouseLocation()
                    local distance = (Vector2.new(headScreenPosition.X, headScreenPosition.Y) - mousePosition).Magnitude
                    if distance < closestDistance then
                        closestDistance = distance
                        closestPlayer = player
                    end
                end
            end
        end

        targetPlayer = closestPlayer
    end
end)

-- 마우스 우클릭 종료
UserInputService.InputEnded:Connect(function(input)
    if input.UserInputType == Enum.UserInputType.MouseButton2 then
        isRightMouseHeld = false
        targetPlayer = nil
    end
end)

-- RenderStepped로 추적 처리
game:GetService("RunService").RenderStepped:Connect(function()
    if isRightMouseHeld and targetPlayer and targetPlayer.Character then
        local head = targetPlayer.Character:FindFirstChild("Head")
        if head then
            Camera.CFrame = CFrame.new(Camera.CFrame.Position, head.Position)
        else
            targetPlayer = nil
        end
    end
end)