--[[
    RTX Upgrade V2 (Author Priority Edition)
    1. 尊重原著：优先使用游戏作者的 SunRays、颜色和亮度设置。
    2. 智能补全：若作者关闭了影子或光芒，脚本才强制开启。
    3. 极速同步：手电筒与动态光依旧保持 RenderStepped 高频追踪。
    4. 画质锁定：维持 Quality Level 17 以确保 Future 模式生效。
]]

local Lighting = game:GetService("Lighting")
local RunService = game:GetService("RunService")
local CollectionService = game:GetService("CollectionService")
local StarterGui = game:GetService("StarterGui")

-- 标记
local SHADOW_TAG = "RTX_V2_PRIORITY"
local ORIGINAL_TAG = "RTX_V2_SOURCE_SILENCED"

-- --- 1. 原生英文通知 ---
local function SendNotification()
    pcall(function()
        StarterGui:SetCore("SendNotification", {
            Title = "RTX Upgrade V2",
            Text = "This script does not support ARM7 phones. Please use a mid-to-high-end phone (64-bit processor).",
            Duration = 6;
        })
    end)
end

-- --- 2. 智能环境维护 (尊重作者设置) ---
local function MaintainEnvironment()
    -- 技术栈锁定：必须是 Future 才能实现高级阴影
    if Lighting.Technology ~= Enum.Technology.Future then
        Lighting.Technology = Enum.Technology.Future
    end

    -- 太阳影子：作者关了我们就开，开了就不动
    if not Lighting.GlobalShadows then
        Lighting.GlobalShadows = true
    end

    -- 太阳光芒 (SunRays)：
    local sunRays = Lighting:FindFirstChildOfClass("SunRaysEffect")
    if sunRays then
        if not sunRays.Enabled then sunRays.Enabled = true end
        -- 护眼兜底：仅当作者设置极其离谱时微调
        if sunRays.Intensity > 0.15 then sunRays.Intensity = 0.1 end
    else
        -- 作者没做，我们才加
        local newRays = Instance.new("SunRaysEffect")
        newRays.Intensity = 0.05
        newRays.Spread = 0.5
        newRays.Parent = Lighting
    end

    -- 自动画质 7 格
    pcall(function()
        if settings().Rendering.QualityLevel ~= Enum.QualityLevel.Level17 then
            settings().Rendering.QualityLevel = Enum.QualityLevel.Level17
        end
    end)
end

-- --- 3. 核心：光源同步 (支持本地/作者手电筒) ---
local function ProcessLight(original)
    if not original:IsA("Light") then return end
    if original:GetAttribute(SHADOW_TAG) or CollectionService:HasTag(original, ORIGINAL_TAG) then
        return
    end

    -- 创建副本：继承作者的所有属性 (Color, Range, Angle, etc.)
    local futureLight = original:Clone()
    futureLight:ClearAllChildren()
    futureLight.Name = original.Name .. "_RTX_Enhanced"
    futureLight.Shadows = true -- 强制开启影子（核心需求）
    futureLight:SetAttribute(SHADOW_TAG, true)

    local isSpot = original:IsA("SpotLight")
    local isSurface = original:IsA("SurfaceLight")

    -- 极速同步轨道
    local conn
    conn = RunService.RenderStepped:Connect(function()
        if not original or not original.Parent then
            futureLight:Destroy()
            conn:Disconnect()
            return
        end

        -- 状态优先级同步
        futureLight.Enabled = original.Enabled
        if not futureLight.Enabled then return end

        -- 实时继承作者修改的属性
        futureLight.Range = original.Range
        futureLight.Color = original.Color
        
        if isSpot then
            futureLight.Angle = original.Angle
            futureLight.Face = original.Face
        elseif isSurface then
            futureLight.Face = original.Face
        end

        -- 零亮度重叠逻辑 (由副本接管作者的亮度)
        if original.Brightness ~= 0 then
            futureLight.Brightness = original.Brightness
            original.Brightness = 0 
        end
    end)

    CollectionService:AddTag(original, ORIGINAL_TAG)
    futureLight.Parent = original.Parent
end

-- --- 4. 自动化运行 ---
local function Scan()
    for _, obj in ipairs(game:GetDescendants()) do
        if obj:IsA("Light") then
            ProcessLight(obj)
        end
    end
end

game.DescendantAdded:Connect(function(obj)
    if obj:IsA("Light") then
        task.defer(ProcessLight, obj)
    end
end)

-- 启动
SendNotification()
RunService.RenderStepped:Connect(MaintainEnvironment)
Scan()

-- 冗余扫描
task.spawn(function()
    while true do
        Scan()
        task.wait(1.8)
    end
end)

print("RTX Upgrade V2: Running.")