Mini-Project 3 - Random Player Picker

How Random Works in Lua

First, let's understand how to pick random things:

-- Pick a random number between 1 and 10
local randomNumber = math.random(1, 10)
print(randomNumber)

-- Pick a random item from a list
local fruits = {"apple", "banana", "orange", "grape"}
local randomIndex = math.random(1, #fruits)
local randomFruit = fruits[randomIndex]
print("You got: " .. randomFruit)

Pick a Random Player Script

Add this Script to ServerScriptService:

-- Random Player Picker
local Players = game:GetService("Players")
local ReplicatedStorage = game:GetService("ReplicatedStorage")

-- Store who the chosen one is
local chosenPlayer = Instance.new("StringValue")
chosenPlayer.Name = "ParseltonguePlayer"
chosenPlayer.Value = ""
chosenPlayer.Parent = ReplicatedStorage

local function pickRandomPlayer()
    local allPlayers = Players:GetPlayers()

    -- Need at least 2 players!
    if #allPlayers < 2 then
        print("Need more players!")
        return nil
    end

    -- Pick randomly
    local randomIndex = math.random(1, #allPlayers)
    local chosen = allPlayers[randomIndex]

    chosenPlayer.Value = chosen.Name
    print("The secret Parseltongue speaker is: " .. chosen.Name)
    return chosen
end

-- Wait for players to join, then pick
wait(10)
pickRandomPlayer()

Tell Only the Chosen Player

This is the SECRET part! We need to show a message only to the chosen player. Add a LocalScript to StarterGui:

-- Secret Message (LocalScript in StarterGui)
local Players = game:GetService("Players")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local player = Players.LocalPlayer

local chosenPlayer = ReplicatedStorage:WaitForChild("ParseltonguePlayer")

chosenPlayer.Changed:Connect(function(newName)
    if newName == player.Name then
        -- This player is the Parseltongue!
        -- Create a secret message
        local gui = Instance.new("ScreenGui")
        gui.Parent = player.PlayerGui

        local label = Instance.new("TextLabel")
        label.Size = UDim2.new(0.5, 0, 0.2, 0)
        label.Position = UDim2.new(0.25, 0, 0.4, 0)
        label.Text = "🐍 YOU are the Parseltongue speaker! 🐍"
        label.TextScaled = true
        label.BackgroundColor3 = Color3.fromRGB(26, 71, 42)
        label.TextColor3 = Color3.fromRGB(212, 175, 55)
        label.Parent = gui

        wait(3)
        gui:Destroy()
    end
end)

The Magic Part!

LocalScripts only run on ONE player's computer. So when we check "if newName == player.Name", only the chosen player's screen shows the message! Everyone else's screen shows nothing!