COMMENTS

• LuaU will ignore lines of code when prefixed with certain characters.

• In comments, you can write anything, and it doesn't have to follow the code grammar.

HOW TO WRITE COMMENTS:

• Single line comments are prefixed with --

• Multiline comments are prefixed with --[[ and end with ]].

EXAMPLE

SERVICES

• A service is an object that contains built-in properties, functions, events, and callbacks.

• Services are used to reach a goal.

• EX: DataStoreService is used to handle data within the game and save a player's progress

HOW TO CALL A SERVICE WITH A SCRIPT:

• ServiceProvider:GetService()

EXAMPLE

SCRIPTS

• A Script is the container for your LuaU code.

THERE ARE 3 TYPES OF SCRIPTS...

Local Scripts (LocalScript)

• Used for executing LuaU code on the client

• These scripts do not run when parented by a service owned by the server.

Server Scripts (Script)

• Used for executing code on the server

• These scripts do not run when parented by a service owned by the client.

Module Scripts (ModuleScript)

• Need to be required by either a Server Script or a Local Script in order to be run.

IMPORTANT NOTES

• ReplicatedStorage is neutral to both Server and Client scripts

• ServerScriptService and ServerStorage are invisible to the Client

• ReplicatedFirst is invisible to the Server

VARIABLES

• A Variable is a name that represents another Value.

• Variables can be a Number, String, Boolean, DataType, etc..

• There are two scopes for Variables: Local, and Global.

HOW TO DEFINE A VARIABLE:

• Local x = 1 [Can only be used in local scope]

• x = 1 [Can only be used in the script it is defined in]

• _G.x = 1 [Can be used across multiple scripts]

• local x, y, z = 1, 2, 3 [Defining multiple variables at once (x = 1, y = 2, z = 3).

• a, b, c = 1, 2, 3 [Defining multiple variables at once (a = 1, b = 2, c = 3).

Functions

• A Function is a set of instructions that can be used multiple times in a script.

• Can be executed through command or triggered through an event.

HOW TO DEFINE FUNCTIONS:

• A basic function uses the function keyword, followed by two parenthesis ().

When called, functions will execute the code within the body of the function. To call a function, simply type the function's name and end with two parenthesis: add()

EXAMPLE:

Arguments & Parameters:

• A Parameter is a variable listed inside the parentheses in the function definition

• An Argument is the value that is being sent to the function whenever the function is called

Return a value:

• Return is often used to return a specific value within the function

CONDITIONALS

• Conditional Structures are what give scripts the ability to perform actions when a specific condition is true

• Conditions can be checked with the following operators...

IF STATEMENTS:

• == Is Equal To

• ~= Is Not Equal To

• > Is Greater Than

• < Is Less Than

• >= Is Greater Than or Equal to

• <= Is Less Than or Equal to

• Booleans, Strings, Data Types, and Numbers can all be affiliated with the relational operators.

• Booleans and Strings only use Equals to and Not Equals to operators.

ELSE STATEMENTS:

• When the conditions of the if statement are not met, you can use an else statement.

• Conditional structures cannot start with else statements.

FINISHED!

I hope you found this free guide useful! Be sure to check out my Youtube channel and other free products on this website!

-DeHapy