Roblox Studio中DataStore无法保存玩家数据问题求助

我制作的点击类游戏中，玩家leaderstats的Clicks点击数和Time游戏时长数据无法通过DataStore持久化，退出重进后会重置为0。以下是ServerScriptService中的代码：

local DataStoreService = game:GetService("DataStoreService")
local statsDS = DataStoreService:GetDataStore("statsDS")

local SAVE_INTERVAL = 60 -- Save data every 60 seconds (1 minute)

-- Helper function to save player data
local function savePlayerData(player)
    local leaderstats = player:FindFirstChild("leaderstats")

    if leaderstats then
        local Clicks = leaderstats:FindFirstChild("Clicks")
        local Time = leaderstats:FindFirstChild("Time")

        if Clicks and Time then
            local data = {Clicks.Value, Time.Value}

            local playerUserId = "Player" .. player.UserId

            local success, errorMessage = pcall(function()
                statsDS:SetAsync(playerUserId, data)
            end)

            if success then
                print("Saved data for " .. player.Name)
            else
                warn("Error saving data for " .. player.Name .. ": " .. errorMessage)
            end
        end
    end
end

game.Players.PlayerAdded:Connect(function(player)
    local leaderstats = Instance.new("Folder")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = player

    local Clicks = Instance.new("IntValue")
    Clicks.Name = "Clicks"
    Clicks.Parent = leaderstats

    local Time = Instance.new("IntValue")
    Time.Name = "Time"
    Time.Parent = leaderstats

    local playerUserId = "Player" .. player.UserId

    local data = statsDS:GetAsync(playerUserId)

    if data then
        Clicks.Value = data[1]
        Time.Value = data[2]
    end

    player:WaitForChild("leaderstats")
    player:WaitForChild("leaderstats"):WaitForChild("Clicks")

    local lastSaveTime = tick()

    local saveTimer

    saveTimer = game:GetService("RunService").Heartbeat:Connect(function()
        if tick() - lastSaveTime >= SAVE_INTERVAL then
            lastSaveTime = tick()
            savePlayerData(player)
        end

        if not player:IsDescendantOf(game) then
            -- Player left the game
            saveTimer:Disconnect()
            savePlayerData(player)
        end
    end)
end)

game.Players.PlayerRemoving:Connect(function(player)
    savePlayerData(player)
end)

• 未对GetAsync做错误捕获：直接调用GetAsync时，若遇到DataStore服务错误、网络波动等异常，会抛出错误导致数据加载逻辑中断，玩家数据保持默认的0值。
• Heartbeat循环的玩家离开处理冗余且易出错：Heartbeat中检测玩家是否在线的逻辑，可能在玩家实例开始销毁后执行，此时leaderstats可能已被删除，导致保存失败；且PlayerRemoving事件已触发保存，此逻辑重复。
• 多余的WaitForChild调用：代码中手动创建了leaderstats和Clicks实例，无需再调用WaitForChild等待，属于无效代码。
• 缺少服务器关闭时的全局保存：未处理BindToClose事件，服务器意外关闭时会丢失未保存的玩家数据。

local DataStoreService = game:GetService("DataStoreService")
local statsDS = DataStoreService:GetDataStore("statsDS")

local SAVE_INTERVAL = 60 -- 每60秒自动保存一次

-- 保存玩家数据的辅助函数
local function savePlayerData(player)
    local leaderstats = player:FindFirstChild("leaderstats")
    if not leaderstats then return end

    local Clicks = leaderstats:FindFirstChild("Clicks")
    local Time = leaderstats:FindFirstChild("Time")
    if not Clicks or not Time then return end

    -- 使用键值对存储，避免索引顺序错误
    local data = {
        Clicks = Clicks.Value,
        Time = Time.Value
    }

    local playerUserId = "Player_" .. player.UserId -- 规范键格式，避免冲突

    local success, errorMessage = pcall(function()
        statsDS:SetAsync(playerUserId, data)
    end)

    if success then
        print("已保存玩家 " .. player.Name .. " 的数据")
    else
        warn("保存玩家 " .. player.Name .. " 数据失败: " .. errorMessage)
    end
end

-- 玩家加入时加载数据
game.Players.PlayerAdded:Connect(function(player)
    -- 创建leaderstats及属性
    local leaderstats = Instance.new("Folder")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = player

    local Clicks = Instance.new("IntValue")
    Clicks.Name = "Clicks"
    Clicks.Parent = leaderstats

    local Time = Instance.new("IntValue")
    Time.Name = "Time"
    Time.Parent = leaderstats

    local playerUserId = "Player_" .. player.UserId
    -- 读取数据时用pcall捕获错误
    local success, data = pcall(function()
        return statsDS:GetAsync(playerUserId)
    end)

    if success and data then
        -- 键值对赋值，避免索引混乱
        Clicks.Value = data.Clicks or 0
        Time.Value = data.Time or 0
        print("已加载玩家 " .. player.Name .. " 的数据")
    elseif not success then
        warn("加载玩家 " .. player.Name .. " 数据失败: " .. data)
    end

    -- 用task循环实现定时保存，替代Heartbeat更高效
    local saveLoop = task.spawn(function()
        while task.wait(SAVE_INTERVAL) do
            if player:IsDescendantOf(game) then
                savePlayerData(player)
            else
                break
            end
        end
    end)

    -- 玩家实例销毁时清理定时器并保存数据
    player.AncestryChanged:Connect(function(_, parent)
        if parent == nil then
            task.cancel(saveLoop)
            savePlayerData(player)
        end
    end)
end)

-- 玩家主动离开时保存数据
game.Players.PlayerRemoving:Connect(function(player)
    savePlayerData(player)
end)

-- 服务器关闭前保存所有在线玩家数据
game:BindToClose(function()
    print("服务器即将关闭，正在保存所有玩家数据...")
    for _, player in ipairs(game.Players:GetPlayers()) do
        savePlayerData(player)
        task.wait(0.1) -- 避免DataStore请求过于频繁
    end
    print("所有玩家数据已保存")
end)

• 添加GetAsync错误捕获：用pcall包裹读取逻辑，确保服务错误时不会中断数据加载，同时输出错误信息便于调试。
• 改用键值对存储数据：相比数组，键值对结构更清晰，后续扩展数据时不会因索引顺序错误导致数据混乱。
• 替换Heartbeat为task循环：使用task.wait(SAVE_INTERVAL)实现定时保存，逻辑更直观高效；通过AncestryChanged监听玩家实例销毁，及时清理定时器并保存。
• 新增BindToClose处理：服务器关闭时自动保存所有在线玩家数据，避免意外关闭导致数据丢失。
• 移除冗余代码：删除无效的WaitForChild调用，简化逻辑。

内容的提问来源于stack exchange，提问作者DuckyPolice