Basic Lua Course
What is Lua?
Lua is a easy to learn programming language Roblox uses to create games. The language is designed to be small, efficient, fast, and safe to use.
Events
Remote Event
A Remote Event is an event used in roblox to communicate to the server and client. Remote events are have many events and functions
- FireAllClients() -- fires to all clients requires no parameter
- FireClient() -- takes in the player parameter
- FireServer() -- fires to the server no parameter
- OnServerEvent () -- function takes in a player parameter
- OnClientEvent() -- functions takes in no parameter
Remote Functions
Similar to the Remote Event however it returns a value when fired. Lets say you want to check if the player owns an item you will usually fire an remote event to check if you own it or not using events and functions like
- InvokeServer() -- fires to the server no parameters required
- InvokeClient() --fires to the client player parameter required
- OnServerInvoke() -- function takes in a player parameter
- OnClientInvoke() -- function takes in no parameter
Bindable Events/Functions
A Bindable Event is similar to a remote event but it only allows a server to server side communication system like a module script communicating to a server script.
- Fire() --fires to the other server side
- Event -- receives the data from the other server side
Roblox Services Examples
Tween Service
Data Store Service
Data Store Service
The Tween Service is a service that allows you to make animations using ui and parts in the game
- :Create() -- creates a tween parameters (instance, tweenInfo, Property)
- :Play() -- plays the tween
- .Completed -- function fires once the tween is done.
Data Store Service
Data Store Service
Data Store Service
The DataStoreService is a service that allows you to save players data.
- :GetDataStore() -- function gets the data store name
- :GetAsync() -- loads in the data
- :SetAsync() -- saves the data
User Input Service
Data Store Service
Market Place Service
The UserInputService is a service that gets fired when a input was fired like pressing the w or clicking,
- .InputBegan -- event that fires when a input begins
- .InputEnded -- event fires when the input ended.
- .InputChanged -- event fires when input changes
Market Place Service
Market Place Service
Market Place Service
The MarketPlaceService allows you to sell game passes and developer products
- .PromptGamePassPurchaseFinished -- fires once the game pass was purchased
- :PromptGamePassPurchase -- prompts the game pass parameters player and gamepassid
Run Service
Market Place Service
Sound Service
The RunService is a service where it fires every frame the game loads in
- .HeartBeat -- fires every heartbeat of the game
- .Stepped -- similar to HeartBeat
Sound Service
Market Place Service
Sound Service
Sounds are usually played in the client but if you want it to play it on the server the sound service got you covered. The Sound Service allows you to play audio that all clients can hear
Loops/Conditional
For Loop
For loop is a type of loop used in all programming languages that will repeat the code until it finishes looping through everything.
- Example
for index, v in pairs(workspace.Folder:GetChildren()) do
if v:IsA("Part") then
print(v)
end
end
While Loop
While loop is another loop that is similar to the for loop but it stops when the condition becomes false
- Example
while i >= 10 do
i+=1
end
Repeat Until
Similar to the while loop but it stops until the condition is true
- Example
repeat
i += 1
wait(1)
until i >= 100
If/Else/Else if Statement
The if statement is the condition statement that checks if the condition is true if the condition is false it will go to the else if and if that condition is also false it will enter the else statement