如何简化Roblox Studio Luau脚本中的elseif链式结构

我用Luau写了个Roblox脚本，功能是在角色头顶显示所属群组的图标，图标下方展示优先级最高群组的头衔，最下面是玩家名称。但现在要处理6个群组的各种组合，脚本里堆了80多个elseif分支，代码超700行，想精简却不知道怎么替代这些重复的分支，对pairs的用法也不太熟。

原基础脚本：

local LogoPos = {
    [1] = {
        [1] = UDim2.new(0.45,0,0,0)
    };
    [2] = {
        [1] = UDim2.new(0.325,0,0,0);
        [2] = UDim2.new(0.525,0,0,0);
    }
}

local Groups = {
    Group1 = 7;
    Group2 = 10;
    Group3 = 11;
}

local Priority = {
    Group1 = 1;
    Group2 = 2;
    Group3 = 3;
}

local Players = game:GetService("Players")

local function SetupRankGui(Player)
    repeat wait() until Player.Character ~= nil
    local pGroups = {Group1 = false; Group2 = false;}
    local RankGui = game:GetService("ServerStorage").RankGUI:Clone()
    RankGui.PlayerName.Text = Player.Name
    Player.Character.Humanoid.DisplayDistanceType = "None"
    local Trues = 0

    if Player:IsInGroup(Groups.Group1) then
        pGroups.Group1 = true
        RankGui.Group1.Visible = true
    end
    if Player:IsInGroup(Groups.Group2) then
        --same as above but for group2
    end
    if Player:IsInGroup(Groups.Group3) then
        --same as for group1 but for group3
    end
    
    for i,v in pairs(pGroups) do
        if v == true then
           Trues = Trues + 1 
        end
    end
    
    if Trues == 0 then
        RankGui.PlayerRank.Text = "Visitor"
        RankGui.Parent = Players[Player.Name].Character.Head
    elseif Trues == 1 then
        if pGroups.Group1 then
            RankGui.Group1.Position = LogoPos[1][1]
            RankGui.PlayerRank.Text = Player:GetRoleInGroup(Group1)
            RankGui.Parent = Players[Player.Name].Character.Head
            return
        elseif pGroups.Group2 then
            --Same as above but for Group2
        end
    elseif Trues == 2 then
        if pGroups.Group1 and pGroups.Group2 then
            RankGui.Group1.Position = LogoPos[2][2]
            RankGui.Group2.Position = LogoPos[2][2]
            RankGui.PlayerRank.Text = Player:GetRoleInGroup(Group1)
            RankGui.Parent = Players[Player.Name].Character.Head
        elseif pGroups.Group2 and pGroups.Group3 then
            --Same as above but setting Group2 and Group3 positions instead
        end
    end
end

repeat wait() until script.Parent:IsA("Model") and script.Parent:IsDescendantOf(workspace)
SetupRankGui(Players[script.Parent.Name])

现在脚本里充斥着大量重复的分支，比如处理4个群组组合的代码：

elseif Trues == 4 then
    if pGroups.Group1 and pGroups.Group2 and pGroups.Group3 and pGroups.Group4 then
        RankGui.Group1.Position = LogoPos[4][1]
        RankGui.Group2.Position = LogoPos[4][2]
        RankGui.Group3.Position = LogoPos[4][3]
        RankGui.Group4.Position = LogoPos[4][4]
        RankGui.PlayerRank.Text = Player:GetRoleInGroup(Groups.Group1)
        RankGui.Parent = Players[Player.Name].Character.Head
        return
    elseif pGroups.Group1 and pGroups.Group2 and pGroups.Group3 and pGroups.Group5 then
        RankGui.Group1.Position = LogoPos[4][1]
        RankGui.Group2.Position = LogoPos[4][2]
        RankGui.Group3.Position = LogoPos[4][3]
        RankGui.Group5.Position = LogoPos[4][4]
        RankGui.PlayerRank.Text = Player:GetRoleInGroup(Groups.Group1)
        RankGui.Parent = Players[Player.Name].Character.Head
        return
    elseif pGroups.Group1 and pGroups.Group2 and pGroups.Group3 and pGroups.Group6 then
        RankGui.Group1.Position = LogoPos[4][1]
        RankGui.Group2.Position = LogoPos[4][2]
        RankGui.Group3.Position = LogoPos[4][3]
        RankGui.Group6.Position = LogoPos[4][4]
        RankGui.PlayerRank.Text = Player:GetRoleInGroup(Groups.Group1)
        RankGui.Parent = Players[Player.Name].Character.Head
        return
    end
end

-- 配置表：整合群组ID、优先级、对应GUI控件名
local GroupConfigs = {
    {Name = "Group1", Id = 7, Priority = 1},
    {Name = "Group2", Id = 10, Priority = 2},
    {Name = "Group3", Id = 11, Priority = 3},
    -- 在这里添加剩余3个群组的配置，格式同上
}

-- 图标位置配置：key是群组数量，value是对应数量的位置数组
local LogoPos = {
    [1] = {UDim2.new(0.45, 0, 0, 0)},
    [2] = {UDim2.new(0.325, 0, 0, 0), UDim2.new(0.525, 0, 0, 0)},
    [3] = {
        UDim2.new(0.25, 0, 0, 0),
        UDim2.new(0.45, 0, 0, 0),
        UDim2.new(0.65, 0, 0, 0)
    },
    [4] = {
        UDim2.new(0.175, 0, 0, 0),
        UDim2.new(0.375, 0, 0, 0),
        UDim2.new(0.575, 0, 0, 0),
        UDim2.new(0.775, 0, 0, 0)
    },
    -- 补充5、6个群组的位置数组
}

local Players = game:GetService("Players")

local function SetupRankGui(Player)
    repeat task.wait() until Player.Character
    local RankGui = game:GetService("ServerStorage").RankGUI:Clone()
    RankGui.PlayerName.Text = Player.Name
    Player.Character.Humanoid.DisplayDistanceType = "None"

    -- 收集玩家所属的群组，同时显示对应图标
    local playerGroups = {}
    for _, config in ipairs(GroupConfigs) do
        if Player:IsInGroup(config.Id) then
            table.insert(playerGroups, config)
            RankGui[config.Name].Visible = true
        else
            RankGui[config.Name].Visible = false
        end
    end

    local groupCount = #playerGroups
    -- 处理无群组的情况
    if groupCount == 0 then
        RankGui.PlayerRank.Text = "Visitor"
        RankGui.Parent = Player.Character.Head
        return
    end

    -- 按优先级排序（优先级数字越小，优先级越高）
    table.sort(playerGroups, function(a, b)
        return a.Priority < b.Priority
    end)

    -- 设置最高优先级群组的头衔
    local highestPriorityGroup = playerGroups[1]
    RankGui.PlayerRank.Text = Player:GetRoleInGroup(highestPriorityGroup.Id)

    -- 给每个群组图标分配位置
    for index, config in ipairs(playerGroups) do
        RankGui[config.Name].Position = LogoPos[groupCount][index]
    end

    -- 挂载GUI到头部
    RankGui.Parent = Player.Character.Head
end

repeat task.wait() until script.Parent:IsA("Model") and script.Parent:IsDescendantOf(workspace)
SetupRankGui(Players[script.Parent.Name])

• 统一配置表：把分散的Groups、Priority整合成GroupConfigs，新增或修改群组只需要在这个表里加一行，不用改业务逻辑。
• 自动遍历检测群组：用循环遍历配置表，自动判断玩家是否在群组里，代替逐个写if判断，避免重复代码。
• 动态排序优先级：把玩家所属群组收集后，用table.sort按优先级排序，直接取第一个就是最高优先级的群组，不用硬编码判断。
• 自动分配图标位置：根据玩家所属群组的数量，从LogoPos里取对应数量的位置数组，按排序后的顺序逐个分配，不用写各种组合的elseif分支——不管是哪几个群组的组合，只要数量对应，位置就自动匹配。

内容的提问来源于stack exchange，提问作者Aeywoo