PRG: Created page with "== Introduction == This tutorial is intended for beginners. It is intended to show you how to do mathematical calculations with Roblox Studio. If you haven't already, please see Your first script as a beginner tutorial. == What this tutorial will teach you == * How to do basic arithmetic with a script * What the arithmetical operators are * The use of parentheses == Setup == You will need to open Roblox Studio. Once you have done that, you will need t..."

2024-12-10T22:12:10Z

Created page with "== Introduction == This tutorial is intended for beginners. It is intended to show you how to do mathematical calculations with Roblox Studio. If you haven't already, please see Your first script as a beginner tutorial. == What this tutorial will teach you == * How to do basic arithmetic with a script * What the arithmetical operators are * The use of parentheses == Setup == You will need to open Roblox Studio. Once you have done that, you will need t..."

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== Introduction ==

This tutorial is intended for beginners. It is intended to show you how to do mathematical calculations with [[Roblox Studio]]. If you haven't already, please see [[Your first script]] as a beginner tutorial.

== What this tutorial will teach you ==

* How to do basic arithmetic with a script
* What the arithmetical operators are
* The use of parentheses

== Setup ==

You will need to open [[Roblox Studio]]. Once you have done that, you will need to click "My ROBLOX", select your map, and click [[Edit]]

You will need some essentials in [[Roblox Studio]] to make this work:

* The Output window:
[[Image:Outputwindow.JPG]]
* The Explorer window:
[[Image:Explorerwindow.JPG]]
and
* The Command bar:
[[Image:Commandtoolbar.JPG]]

* To make sure you have the Output window, click View / Output.
* To make sure you have the Explorer window visible, click View / Explorer.
* To make sure you have the Command bar visible, click View / Toolbars / Command.

== Arithmetical operators ==

[http://www.lua.org/pil/index.html Lua] and Roblox can do mathematical calculations, much like a calculator. In Lua, there is:

* + Addition (e.g., 2+3=5)
* - Subtraction (e.g., 5-2=3)
* * Multiplication (e.g., 5*2=10)
* / Division (e.g., 10/2=5)
* - Negation (e.g., -(2)=-2)

== Script ==

A script of:
<pre>
print(2+3)
print(5-2)
print(5*2)
print(10/2)
print(-(2))
</pre>

will therefore yield the results of 5, 3, 10, 5, and -2. You can work with decimals and negative numbers as well. Try inserting this script into Workspace and running it to confirm this.

You can assign numbers to [[Variables]] and do these equations as well:

<pre>
x=2
y=3
print(x+y)
print(x-y)
print(x*y)
print(x/y)
</pre>

Which gives us 5, -1, 6, and 0.66666666666667. These are very simple examples (i.e., you don't have to limit yourself to just two variables).

== Parentheses ==

Parentheses can be used in Lua much as they are used in algebra. If you want something calculated first, put that in parentheses.

<pre>
print((10/20)/5) -- is equal to .5/5, which is .1
print(10/(20/5)) -- is equal to 10/4, which is 2.5
</pre>

Following the associative properties of multiplication and addition, it does not matter how you organize the parentheses in certain instances:

<pre>
print((10+20)+5) -- is equal to 30+5, which is 35
print(10+(20+5)) -- is equal to 10+25, which is 35

print((10*20)*5) -- is equal to 200*5, which is 1000
print(10*(20*5)) -- is equal to 10*100, which is 1000
</pre>

== See Also ==

[http://www.lua.org/pil/3.1.html Arithmetic Operators]

[[Category:Scripting Tutorials]]

Basic math - Revision history