Argument 3缺失或为nil错误：Roblox脚本故障排查求助

错误原因分析 #

• CFrame.Angles() 需要3个角度参数（X、Y、Z轴的旋转角度），你只传入了2个，直接触发Argument 3缺失错误
• Vector3.new() 需要3个坐标参数（X、Y、Z），你同样只传了2个，也会导致参数缺失问题
• 还有一处拼写错误：v.Transparancy 应该是 v.Transparency（少了字母'e'），这会导致透明效果设置失败

修正后的代码 #

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local TweenService = game:GetService("TweenService")
local Players = game:GetService("Players")

local Player = Players.LocalPlayer
local PlayerGui = Player:WaitForChild("PlayerGui")
local Remotes = ReplicatedStorage:WaitForChild("Remotes")
local Rng = Random.new()

local function AnimateBuild(Model)
    -- 提前检查模型是否有效
    if not Model then 
        warn("传入的Model参数为nil")
        return 
    end
    
    for _, v in Model:GetDescendants() do
        if v:IsA("BasePart") or v:IsA("UnionOperation") then
            local OriginalCFrame = v.CFrame
            local OriginalSize = v.Size
            local OriginalTransparency = v.Transparency
            
            -- 补全Vector3的Z轴偏移参数
            local PositionOffset = Vector3.new(Rng:NextNumber(-2, 2), Rng:NextNumber(-2, 2), Rng:NextNumber(-2, 2))
            -- 补全CFrame.Angles的Z轴旋转参数
            local RotationOffset = CFrame.Angles(Rng:NextNumber(-3, 3), Rng:NextNumber(-3, 3), Rng:NextNumber(-3, 3))
            v.CFrame = v.CFrame * CFrame.new(PositionOffset) * RotationOffset
            -- 修正透明属性的拼写错误
            v.Transparency = 1 
            
            TweenService:Create(v, TweenInfo.new(1, Enum.EasingStyle.Exponential, Enum.EasingDirection.Out), {CFrame = OriginalCFrame}):Play()
            TweenService:Create(v, TweenInfo.new(0.25, Enum.EasingStyle.Quart, Enum.EasingDirection.Out), {Transparency = OriginalTransparency}):Play()
            
        end
    end
end

Remotes:WaitForChild("BuildAnimation").OnClientEvent:Connect(function(Model)
    print("CALLED ANIMATION")
    AnimateBuild(Model)
end)

额外验证提示 #

• 确保服务端触发BuildAnimation远程事件时，确实传递了有效的模型对象，没有传nil
• 如果后续仍有参数相关错误，可以在函数开头的检查逻辑里加打印，确认参数状态

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