Roblox Lua实现右Ctrl长按/点按切换效果 替换固定7秒自动关闭

方案1：按住右Ctrl生效、松开立即关闭（优先推荐） #

该方案完全匹配你的第一需求，同时修复了原代码多次触发会导致移速无限叠加的问题：

local setting = settings().Network
local Effect = Instance.new("ColorCorrectionEffect")
Effect.Parent = game.Lighting
Effect.Saturation = -1
Effect.Brightness = 0
Effect.Contrast = 0
Effect.Enabled = false

-- 存储原始移速，避免倍率重复叠加
local originalWalkSpeed = 0
local UserInputService = game:GetService("UserInputService")

-- 按下右Ctrl时开启效果
UserInputService.InputBegan:Connect(function(inputObject, gameProcessedEvent)
    if gameProcessedEvent then return end -- 忽略游戏已处理的输入，比如打字时触发
    if inputObject.KeyCode == Enum.KeyCode.RightControl then
        originalWalkSpeed = game.Players.LocalPlayer.Character.Humanoid.WalkSpeed
        Effect.Enabled = true
        setting.IncomingReplicationLag = 1000
        game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = originalWalkSpeed * 3
    end
end)

-- 松开右Ctrl时关闭效果
UserInputService.InputEnded:Connect(function(inputObject, gameProcessedEvent)
    if inputObject.KeyCode == Enum.KeyCode.RightControl then
        Effect.Enabled = false
        setting.IncomingReplicationLag = 0
        game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = originalWalkSpeed
    end
end)

方案2：按右Ctrl切换开关状态 #

如果第一种方案遇到兼容问题，可以使用这个切换模式版本：

local setting = settings().Network
local Effect = Instance.new("ColorCorrectionEffect")
Effect.Parent = game.Lighting
Effect.Saturation = -1
Effect.Brightness = 0
Effect.Contrast = 0
Effect.Enabled = false

local isEffectActive = false
local originalWalkSpeed = 0
local UserInputService = game:GetService("UserInputService")

UserInputService.InputBegan:Connect(function(inputObject, gameProcessedEvent)
    if gameProcessedEvent then return end
    if inputObject.KeyCode == Enum.KeyCode.RightControl then
        isEffectActive = not isEffectActive
        if isEffectActive then
            -- 开启效果
            originalWalkSpeed = game.Players.LocalPlayer.Character.Humanoid.WalkSpeed
            Effect.Enabled = true
            setting.IncomingReplicationLag = 1000
            game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = originalWalkSpeed * 3
        else
            -- 关闭效果
            Effect.Enabled = false
            setting.IncomingReplicationLag = 0
            game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = originalWalkSpeed
        end
    end
end)

内容的提问来源于stack exchange，提问作者rocks2260