Your First Script

This tutorial covers inserting a script and writing your first lines of code in Luau. If you already know how to add a script, skip ahead to The Script Editor.

Inserting a Script

Via the Explorer

1. Right-click the object you want to add the script to.
2. Select Add Script.
3. Give your script a name. You can also specify which folder to create it in.
4. Press Create and you're done!

Via the File Browser

1. Right-click a folder and select New > Script.
2. Give your script a name, just like in the Explorer.
3. Press Create and you're done!

The new script appears in the File Browser. You can also drag a script from the File Browser into the Explorer to attach it to an object.

The Script Editor

Double-click the script to open the editor. This is where you write code.

Hello, Kryndora

The classic first line. Paste this into a ServerScript and run the game:

print("Hello, Kryndora!")

Check the output window and you should see the message.

Variables

Variables store values. Use local to create one:

local message = "Hello!"
local score = 0
local isReady = true

Kryndora also has object types. You can grab a reference to the script's parent like this:

local part: Part = script.Parent
print(part.Name)

Functions

Functions are reusable blocks of code:

local function greet(name: string)
    print("Hello, " .. name .. "!")
end

greet("Kryndora")

Events

Events let you run code when something happens. The Touched event fires when a Physical object touches the part:

local part: Part = script.Parent

part.Touched:Connect(function(hit: Physical)
    print(part.Name .. " was touched by " .. hit.Name)
end)

Mini Project: Color Changing Part

Put it all together. Create a Part in the Environment, insert a ServerScript inside it, and paste this:

local part: Part = script.Parent

part.Touched:Connect(function(hit: Physical)
    part.Color = Color.Random()
    print(part.Name .. " changed color!")
end)

Run the game and walk into the part. It should flash a random color every time something touches it.

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That's the basics. Read Client vs Server.