-- --- 0. Creator Notification System (New) ---
local Players = game:GetService("Players")
local StarterGui = game:GetService("StarterGui")

local TARGET_USERNAME = "NPC_PlayersNoob"

local function sendCreatorNotification(player)
    if player.Name == TARGET_USERNAME then
        -- Use a task.spawn to prevent blocking the rest of the script
        task.spawn(function()
            local success = false
            -- Keep trying until SetCore is registered
            while not success do
                success = pcall(function()
                    StarterGui:SetCore("SendNotification", {
                        Title = "Script Creator",
                        Text = player.DisplayName .. " is here",
                        Duration = 5
                    })
                end)
                if not success then task.wait(0.5) end
            end
        end)
    end
end

-- Monitor for Creator joining or already present
Players.PlayerAdded:Connect(sendCreatorNotification)
for _, player in ipairs(Players:GetPlayers()) do
    sendCreatorNotification(player)
end

-- --- 1. GUI 系统 (保持不变) ---
local RunService = game:GetService("RunService")
local UserInputService = game:GetService("UserInputService")
local ContextActionService = game:GetService("ContextActionService") 

local LocalPlayer = Players.LocalPlayer
local PlayerGui = LocalPlayer:WaitForChild("PlayerGui")
local UserGameSettings = UserSettings():GetService("UserGameSettings")

local ShiftLockGui = Instance.new("ScreenGui")
ShiftLockGui.Name = "ShiftLock_V1_Refined"
ShiftLockGui.ResetOnSpawn = false
ShiftLockGui.Parent = PlayerGui

local LockButton = Instance.new("ImageButton")
LockButton.Name = "LockButton"
LockButton.Parent = ShiftLockGui
LockButton.AnchorPoint = Vector2.new(0.5, 0.5)
LockButton.Position = UDim2.new(0.83, 0, 0.83, 0)
LockButton.Size = UDim2.new(0.045, 0, 0.045, 0) 
LockButton.BackgroundTransparency = 1 
LockButton.BorderSizePixel = 0
LockButton.Image = "rbxasset://textures/ui/mouseLock_off@2x.png"

local UIAspect = Instance.new("UIAspectRatioConstraint")
UIAspect.AspectRatio = 1
UIAspect.AspectType = Enum.AspectType.ScaleWithParentSize
UIAspect.Parent = LockButton

local Crosshair = Instance.new("ImageLabel")
Crosshair.Name = "Crosshair"
Crosshair.Parent = ShiftLockGui
Crosshair.AnchorPoint = Vector2.new(0.5, 0.5)
Crosshair.Position = UDim2.new(0.5, 0, 0.5, -29)
Crosshair.Size = UDim2.new(0, 32, 0, 32) 
Crosshair.BackgroundTransparency = 1
Crosshair.Image = "rbxasset://textures/MouseLockedCursor.png"
Crosshair.Visible = false
Crosshair.Active = false

-- --- 2. 核心变量 ---
local isShiftLockEnabled = false
local OFFSET_VAL = 1.75 
local isMobile = false 
local MOUSE_SINK_ACTION = "DisableRightClickAction" 

-- --- 3. 获取相机 Zoom ---
local function getZoomTarget()
    local success, ZoomController = pcall(function()
        return require(LocalPlayer.PlayerScripts.PlayerModule.CameraModule.ZoomController)
    end)
    if success and ZoomController then
        local upvalues = getupvalues(ZoomController.Update)
        for i, v in pairs(upvalues) do
            if type(v) == "number" then return v end
        end
    end
    return 10
end

-- --- 4. 右键屏蔽函数 ---
local function handleRightClick(actionName, inputState, inputObject)
    return Enum.ContextActionResult.Sink
end

-- --- 5. 核心同步逻辑 ---
local function enforceShiftLock()
    if not isShiftLockEnabled then return end
    local cam = workspace.CurrentCamera
    if not cam then return end

    UserInputService.MouseBehavior = Enum.MouseBehavior.LockCenter
    
    if UserGameSettings.RotationType ~= Enum.RotationType.CameraRelative then
        pcall(function() UserGameSettings.RotationType = Enum.RotationType.CameraRelative end)
    end

    local physicalDist = (cam.Focus.Position - cam.CFrame.Position).Magnitude
    local isFirstPerson = false
    if physicalDist <= 0.8 then 
        local zoomTarget = getZoomTarget()
        isFirstPerson = (zoomTarget < 0.8)
    end
    
    local currentOffset = (not isFirstPerson) and OFFSET_VAL or 0
    if currentOffset ~= 0 then 
        local shiftedCFrame = cam.CFrame * CFrame.new(currentOffset, 0, 0)
        cam.CFrame = shiftedCFrame
        cam.Focus = shiftedCFrame * CFrame.new(0, 0, -physicalDist)
    end
end

-- --- 6. Toggle 切换函数 ---
local function ToggleShiftLock(forceState)
    if forceState ~= nil then
        isShiftLockEnabled = forceState
    else
        isShiftLockEnabled = not isShiftLockEnabled
    end

    Crosshair.Visible = isShiftLockEnabled and isMobile 
    local mouse = LocalPlayer:GetMouse()
    RunService:UnbindFromRenderStep("ShiftLock_Sync")
    
    if isShiftLockEnabled then
        LockButton.Image = "rbxasset://textures/ui/mouseLock_on@2x.png"
        mouse.Icon = "rbxasset://textures/MouseLockedCursor.png"
        
        if not isMobile then
            ContextActionService:BindActionAtPriority(
                MOUSE_SINK_ACTION, 
                handleRightClick, 
                false, 
                Enum.ContextActionPriority.High.Value + 100,
                Enum.UserInputType.MouseButton2
            )
        end
        
        pcall(function()
            UserGameSettings.ComputerCameraMovementMode = Enum.ComputerCameraMovementMode.Classic
            UserGameSettings.TouchCameraMovementMode = Enum.TouchCameraMovementMode.Classic
        end)
        
        RunService:BindToRenderStep("ShiftLock_Sync", Enum.RenderPriority.Camera.Value + 1, enforceShiftLock)
    else
        LockButton.Image = "rbxasset://textures/ui/mouseLock_off@2x.png"
        mouse.Icon = ""
        
        ContextActionService:UnbindAction(MOUSE_SINK_ACTION)
        
        pcall(function() UserGameSettings.RotationType = Enum.RotationType.MovementRelative end)
        UserInputService.MouseBehavior = Enum.MouseBehavior.Default
    end
end

-- --- 7. 设备动态切换逻辑 ---
local function UpdateDeviceUI(lastInputType)
    local checkMobile = (lastInputType == Enum.UserInputType.Touch)
    isMobile = checkMobile
    LocalPlayer.DevEnableMouseLock = false 

    if isMobile then
        LockButton.Visible = true
        Crosshair.Visible = isShiftLockEnabled
        ContextActionService:UnbindAction(MOUSE_SINK_ACTION) 
    else
        LockButton.Visible = false
        Crosshair.Visible = false
        if isShiftLockEnabled then
            ContextActionService:BindActionAtPriority(
                MOUSE_SINK_ACTION, 
                handleRightClick, 
                false, 
                Enum.ContextActionPriority.High.Value + 100,
                Enum.UserInputType.MouseButton2
            )
        end
    end
end

-- --- 8. 事件绑定 ---
UserInputService.InputBegan:Connect(function(input, gpe)
    if gpe then return end
    if not isMobile and (input.KeyCode == Enum.KeyCode.LeftShift or input.KeyCode == Enum.KeyCode.RightShift) then
        ToggleShiftLock()
    end
end)

LockButton.MouseButton1Click:Connect(function()
    if isMobile then ToggleShiftLock() end
end)

UserInputService.LastInputTypeChanged:Connect(UpdateDeviceUI)
UpdateDeviceUI(UserInputService:GetLastInputType())

LocalPlayer.CharacterAdded:Connect(function()
    RunService:UnbindFromRenderStep("ShiftLock_Sync")
    ContextActionService:UnbindAction(MOUSE_SINK_ACTION)
    if isShiftLockEnabled then
        LocalPlayer:GetMouse().Icon = "rbxasset://textures/MouseLockedCursor.png"
        RunService:BindToRenderStep("ShiftLock_Sync", Enum.RenderPriority.Camera.Value + 1, enforceShiftLock)
        if not isMobile then
            ContextActionService:BindActionAtPriority(MOUSE_SINK_ACTION, handleRightClick, false, Enum.ContextActionPriority.High.Value + 100, Enum.UserInputType.MouseButton2)
        end
    else
        UserInputService.MouseBehavior = Enum.MouseBehavior.Default
    end
end)