Essential ObjectsClass | Description | Part | A physical brick in the world. | Model | A container for Parts. | Folder | A container for Scripts and value objects. | Script | A container for Lua source code. | LocalScript | A Script that runs its code on a client. |
Basic math functionsOperation | Description | a + b
| Adds a and b. | a - b
| Subtract a and b. | a * b
| Multiply a and b. | a / b
| Divides a by b. | a % b
| Remainder of a divided by b. | Function | Description | math.random(n)
| Returns random number from 1 to n (no negatives). | math.random(a, b)
| Returns random number from a to b. | math.max(...)
| Returns the largest number. | math.min(...)
| Returns the smallest number. | math.floor(n)
| Rounds n down. | math.ceil(n)
| Rounds n up. | math.abs(n)
| | math.sqrt(n)
| | math.pi
| Approx equal to 3.14159 |
String functionsOperation | Description | a .. b
| Combine two strings. | Function | Description | string.len(str)
| Returns length of str. | string.upper(str)
| Returns str in upper-case. | string.lower(str)
| Returns str in lower-case. | string.reverse(str)
| Returns str in reverse. | string.rep(str, n)
| Returns str repeated n times | string.sub(str, a, b)
| Return sub-string of str from a to b. |
Tableslocal list = {1, 2, 3}
local firstNum = list[1]
list[2] = 4
print("There are " .. #list .. " numbers")
local total = 0
for i = 1, #list do
total = total + list[i]
end
print("The total is " .. total) |
Tables are a collection of values. They are defined using curly braces {} with values separated by commas. Access the values inside using square brackets []. Tables are sometimes called arrays. Use a for loop to work with all items in a table individually. The :GetChildren() method returns a table of children in an object. | | Constantsgame
| Parent of all game services. | workspace
| Container for all bricks and models are stored. | script
| The currently running script. |
Finding Objectsworkspace.Part:Destroy()
print(script.Parent.Name)
game.ServerStorage.Tree:Clone() |
Use a period to access an object's children. Use .Parent to access an object's parent. Use constants like game, workspace, and script to identify objects in the hierarchy. Creating objectsHow do I create an object? Using Instance.new(class) and setting the parent:
object.Parent = parent | How do I access an object's properties? Use a period (.):
print(object.Name) | How do I set an object's properties? Use a period (.) and equals sign (=):
part.Transparency = .5 | How do I destroy an object? Using object:Destroy() | How do I copy a preexisting object? Using object:Clone() and setting the parent:
newTree = workspace.Tree:Clone()
newTree.Parent = workspace |
General Object FunctionsMethod name | Description | :FindFirstChild(name)
| Return a child with name or nil if it doesn't exist. | :WaitForChild(name)
| Pauses until a child with a name exists and returns it. | :IsA(className)
| Return whether the object is a certain type of object. | :Clone()
| Makes and returns a copy of an object. | :Destroy()
| Permanently delete an object. | :GetChildren()
| Return a list of an object's children. |
Event basicsfunction onTouch(part)
print(part.Name .. " touched me!")
end
workspace.Part.Touched:connect(onTouch) |
Events are specific occurrences relating to objects. When an event fires, or occurs, all connected functions are called. | | Basic functionswait(n)
| Wait n seconds then continue. | print(...)
| Display something in the Output window. |
Variableslocal myScore = 5
myScore = myScore + 1
print(myScore)
local myName = "Ozzy"
print("My name is " .. myName) |
Variables store data of any kind - numbers, strings, tables, objects or nil (nothing). A local variable is only accessible in the block of code it is defined in. If statementsif workspace:FindFirstChild("Tree") then
print("There is a tree here.")
end
if coins < 5 then
print("You need more money.")
else
print("You have enough money!")
end
if player.Name == "Jake" then
print("You are an awesome guy, Jake")
elseif player.Name == "Sally" then
print("You are a sweetheart, Sally")
else
print("You are a pretty cool person")
end |
If statements will run their code if the value between if/then is true (or not nil). They can one an else block, or any number of elseif blocks. LoopsNumeric for loop For counting numerically.
Example: Count from 1 to 5:
for i = 1, 5 do
print(i)
end | Generic for loop Most often used for object children.
Example: Print all children in object:
for i, child in pairs(object:GetChildren()) do
print(child.Name)
end | While loop Perform code until a condition is false.
Example: Remove all children named 'Ball'
while object:FindFirstChild("Ball") do
object.Ball:Destroy()
end | Repeat-until loop Perform code once, then again until a condition is true.
Ex.: Copy objects until there are 5.
repeat
newObject = object:Clone()
newObject.Parent = workspace
wait(1)
until #workspace:GetChildren() >= 5 |
Loops are used to iterate, or repeat code a number of times. Function examplesfunction sayHello()
print("Hello, world")
end
sayHello()
function addTwoNumbers(a, b)
print("The sum is:", a + b)
end
addTwoNumbers(3, 5)
function calculateSquare(n)
return n * n
end
local result = calculateSquare(3) |
A function is a named block of code that can be run anywhere in code by calling it by name. Functions can have arguments (given values) and/or return values. |
Created By
ozzypig.com
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Comments
First draft published, I hope to get some good feedback on my first cheat sheet!
Nice work, it may be basic but you did just start. I hope you continue with this!
Some things to add:
How to make color (Color3.new).
How to move things (Vector3.new or CFrame.new).
If you haven't added function(example).
Statements like elseif, then, if, and, or.
Ect.
Nice work and I hope you continue!
Making some minor fixes and changes as I receive feedback.
what is child?
nice, clean, and basic. good job.
This looks great for beginners, I probably won't be using this but if I was just starting to script this would be a great help!
Something like this for searching instances would be really good.
Just realized you made Fisticuffs.Anywho, I hoped for a more in depth description, such as how you can put them together.I'm an amatuer scripter, as well as a game dev, and scripting is my weak point, anywho, thank you for the cheat sheet, may success and fortune be your reward.
I love this, even though I have been scripting for a while I will look at this for certain pieces. Thank you so much for making this. Can you possibly add in the keydown events and mouse down events?
I am a beginning scripter, and this is an awesome help! Thank you!
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