Roblox运行奔跑FOV切换脚本报Script Timeout错误游戏冻结如何修复

错误根源 #

你遇到的Script Timeout: exhausted allowed execution time报错、游戏冻结的问题，完全由代码中两段无等待空循环导致：

repeat
until not Running

这类没有任何等待逻辑的空循环会持续占用线程执行资源，瞬间耗尽Roblox分配给脚本的运行时间，直接触发超时崩溃。这两段循环逻辑和你要实现的奔跑FOV效果没有任何关联，属于冗余代码，可以直接删除。

额外逻辑修复 #

删除空循环之外，你的原有代码还存在几处逻辑问题需要调整：

• 原有按下Shift的判断逻辑中，如果玩家已经处于奔跑状态，会先执行减速、切回普通FOV，又立刻执行加速、切奔跑FOV，属于无效逻辑，会导致WalkSpeed数值异常
• 没有监听左Shift松开的事件，无法实现松开Shift就停止奔跑的常规交互
• HumanoidRootPart没有提前缓存，每次触发输入事件都调用WaitForChild存在冗余开销

修复后完整代码 #

local UserInputService = game:GetService("UserInputService")
local TweenService = game:GetService("TweenService")
local player = game.Players.LocalPlayer
local Character = script.Parent
local Humanoid = Character:WaitForChild("Humanoid")
local HumanoidRootPart = Character:WaitForChild("HumanoidRootPart")
local Camera = workspace.CurrentCamera

local FovRun = TweenService:Create(Camera, TweenInfo.new(0.5), {FieldOfView = 75})
local FovWalk = TweenService:Create(Camera, TweenInfo.new(0.5), {FieldOfView = 70})
local Running = false
local DEFAULT_WALKSPEED = Humanoid.WalkSpeed -- 缓存初始移速避免数值累加错误

-- 按下左Shift触发奔跑
UserInputService.InputBegan:Connect(function(Key, IsTyping)
    if Key.KeyCode == Enum.KeyCode.LeftShift and not IsTyping and Humanoid.Health > 0 then
        -- 只有向前移动时才触发奔跑
        if Humanoid.MoveDirection:Dot(HumanoidRootPart.CFrame.LookVector) > 0 and not Running then
            Running = true
            Humanoid.WalkSpeed = DEFAULT_WALKSPEED + 8
            FovRun:Play()
        end
    end
end)

-- 松开左Shift停止奔跑
UserInputService.InputEnded:Connect(function(Key, IsTyping)
    if Key.KeyCode == Enum.KeyCode.LeftShift and not IsTyping and Running then
        Running = false
        Humanoid.WalkSpeed = DEFAULT_WALKSPEED
        FovWalk:Play()
    end
end)

-- 额外兼容：玩家停止移动、死亡时自动退出奔跑状态
Humanoid.Running:Connect(function(Speed)
    if Speed < 1 and Running then
        Running = false
        Humanoid.WalkSpeed = DEFAULT_WALKSPEED
        FovWalk:Play()
    end
end)

Humanoid.Died:Connect(function()
    if Running then
        Running = false
        Humanoid.WalkSpeed = DEFAULT_WALKSPEED
        FovWalk:Play()
    end
end)

内容的提问来源于stack exchange，提问作者SandStorm