Unity is a cross-platform game engine that can be used to create 2D, 3D, VR and AR games and experiences. It was originally released in 2005 and has since expanded to support over 25 platforms. Nearly half of all games are now built with Unity. The document discusses Unity's history, how to download and install it, an overview of the Unity interface and common tools, how to set up and create projects and objects, scripting with C#, visual scripting with Bolt, the Unity Asset Store, Mixamo for animations, examples of games made with Unity, and advantages and disadvantages.

1. Presented by,
FIROS. K

2. Contents
Introduction
History of Unity
Downloading and Installation
Unity Hub
Creating and setting up project
What we have here?
Creating an object
Parent-children relationship
Materials
Scripting in Unity – C#
Bolt – Visual scripting
Unity Asset Store
Mixamo
Made by Unity
Advantages and Disadvantages of Unity
Conclusion
References

3. Introduction
Unity is a cross-platform game engine developed by Unity Technologies.
First announced and released in June 2005 at Apple Inc.'s Worldwide Developers
Conference as a Mac OS X-exclusive game engine.
As of 2018, the engine had been extended to support more than 25 platforms.
The engine can be used to create three-dimensional, two-dimensional, virtual
reality, and augmented reality games, as well as simulations and other
experiences.
The engine has been adopted by industries outside video gaming, such as film,
automotive, architecture, engineering and construction.

4. History of Unity
Founded in a small Copenhagen apartment in 2004 by Nicholas Francis,
Joachim Ante, and David Helgason.
But the company, which was recently valued around $6 billion and could be
headed toward an IPO, is becoming much more than that.
“Unity wants to be the 3D operating system of the world”, says Sylvio Drouin, VP
of the Unity Labs R&D team.
Nearly half of the world’s games are built with Unity, which is particularly popular
among mobile game developers.
And in the fourteen years since Unity’s engine launched, the size of the global
gaming market has exploded from $27 billion to $135 billion.

5. Downloading and Installation
Step 1: Go to official website of Unity and click Get started.
https://unity.com/

6. Downloading and Installation (Cont.)
Step 2: Select Individual option and click the Get started of Personal.

7. Downloading and Installation (Cont.)
Step 3: Click on Start here.

8. Downloading and Installation (Cont.)
Step 4: Agree and download the Unity Hub.

9. Unity Hub
The Unity Hub is a management tool that you can use to manage all of your
Unity Projects and installations.
Use the Hub to manage multiple installations of the Unity Editor along with their
associated components, create new Projects, and open existing Projects.
It can be downloaded and installed from the official unity website.
https://unity.com/
The current latest version of Unity Hub is 2.4.2.

10. Unity Hub (Cont.)

11. Creating and Setting up project
Step 1: Open Unity Hub and click on the new button in right side.

12. Creating and Setting up project (Cont.)
Step 2: Type the name of the Project and select the type and press create.

13. Creating and Setting up project (Cont.)
Step 3: Wait for the project creation and Unity editor to open up.

14. What we have here?
Hierarchy window
The Hierarchy window contains a list of every GameObject in the current Scene.
Some of these are direct instances of Asset files (like 3D models), and others are
instances of Prefabs, which are custom GameObjects that make up most of your
game.
When you add or remove GameObjects the Scene (or when your gameplay
mechanic adds and removes them), they appear and disappear from the
Hierarchy as well.

15. What we have here? (Cont.)
Inspector window
Projects in the Unity Editor are made up of multiple GameObjects that
contain scripts, sounds, Meshes, and other graphical elements such as
Lights.
The Inspector window (sometimes referred to as “the Inspector”) displays
detailed information about the currently selected GameObject, including
all attached components and their properties, and allows you to modify
the functionality of GameObjects in your Scene.

16. What we have here? (Cont.)
Project window
The Project window displays all of the files related to your Project and is the
main way you can navigate and find Assets and other Project files in your
application.
When you start a new Project by default this window is open.
However, if you cannot find it, or it is closed, you can open it via Window >
General > Project or use the keyboard command Ctrl + 9 (Command + 9 on
macOS).

17. What we have here? (Cont.)
Console window
The Console Window shows errors, warnings
and other messages generated by Unity.
You can also show your own messages in the
Console using the Debug class.
Everything that is written to the Console
Window (by Unity, or your own code) is also
written to a Log File.
To open the Console from Unity’s main menu,
select Window > General > Console.

18. What we have here? (Cont.)
Scene view
The Scene view is your interactive view
into the world you are creating.
You can use the Scene view to select and
position scenery, characters, Cameras,
lights, and all other types of GameObjects.

19. What we have here? (Cont.)
Game view
The Game view is rendered from the Camera(s)
in your application.
It represents your final, published application.
You need to use one or more Cameras to
control what the player sees when they are
using your application.

20. What we have here? (Cont.)
Modes – Perspective and Isometric
A perspective camera is how we see the real world.
If we take a look at the things around us, they have depth and we can judge their
distance.
An Isometric/orthographic camera however removes this sense of perspective.
Objects are drawn without perspective distortion.

21. What we have here? (Cont.)
Toolbar

22. What we have here? (Cont.)

23. What we have here? (Cont.)

24. What we have here? (Cont.)

25. What we have here? (Cont.)

26. What we have here? (Cont.)

27. Creating an Object
To create an object in unity just right click on the
hierarchy window.
Select what we want to create and it’s type.

28. Parent-Children Relationship
Parenting is one of the most important concepts to understand when using
Unity.
When a GameObject is a Parent of another GameObject, the Child GameObject
will move, rotate, and scale exactly as its Parent does.
You can think of parenting as being like the relationship between your arms and
your body; whenever your body moves, your arms also move along with it.
Child objects can also have children of their own and so on.

29. Parent-Children Relationship (Cont.)
So your hands could be regarded as “children” of your arms and then each hand
has several fingers, etc.
Any object can have multiple children, but only one parent.
These multiple levels of parent-child relationships form a Transform hierarchy.
The object at the very top of a hierarchy (ie, the only object in the hierarchy that
doesn’t have a parent) is known as the root.
You can create a Parent by dragging any GameObject in the Hierarchy View
onto another.
This will create a Parent-Child relationship between the two GameObjects.

30. Materials
It is a way to define how object render when it comes to
colors, textures, reflection, etc.
To create a new Material, use Assets->Create->Material from
the main menu or the Project View context menu.
By default, new materials are assigned the Standard Shader,
with all map properties empty.
Once the Material has been created, you can apply it to an
object and tweak all of its properties in the Inspector.
To apply it to an object, just drag it from the Project View to
any object in the Scene or Hierarchy.

31. Scripting in Unity – C#
Scripting tells our GameObjects how to behave.
It is the scripting and components attached to the GameObjects, and how they
interact with each other, that creates your gameplay.
Unity uses C#(C sharp) as it’s scripting language.
Like any language, scripting language have syntax, or parts of speech and the
primary parts are called variables, functions, and classes.

32. Scripting in Unity – C# (Cont.)

33. Bolt – Visual scripting
Bolt is a visual scripting asset for Unity.
It enables Unity users to create logic for games or
applications without writing code.
Bolt has visual, node-based graphs that both
programmers and non-programmers can use to
design final logic or to quickly create prototypes.
Bolt also features an API that programmers can use
for more advanced tasks, or to create custom nodes
that can be used by other team members.

34. Unity Asset Store
It is a growing library of Assets.
Both Unity Technologies and members of the community create these Assets
and publish them to the store.
There is a mix of free and affordable commercial Assets that you can download
directly into your Unity Project.

35. Unity Asset Store (Cont.)

36. Mixamo
Mixamo is a 3D computer graphics technology company.
Based in San Francisco, the company develops and sells web-based services for
3D character animation.
Mixamo's technologies use machine learning methods to automate the steps of
the character animation process, including 3D modeling to rigging and 3D
animation.
Mixamo is spun-off of Stanford University and has raised over $11 million from
investors Granite Ventures, Keynote Ventures, Stanford University and AMD
Ventures.
Mixamo was acquired by Adobe Systems on June 1, 2015.

37. www.mixamo.com/

38. Made by Unity

39. Made by Unity (Cont.)

40. Made by Unity (Cont.)

41. Advantages of Unity
Platform support: The engine is highly preferred for its extended support to 27
platforms.
IDE: The integrated development editor support JavaScript and C# for scripting,
and also offers notable features that are ideal for the game development.
Graphics: The high quality audio and visual effects are supported by the engine
that eases the game development.
Documentation: The detailed documentation includes the explanation of every
small topic.
Debugging: The debugging and tweaking is amazingly easier with Unity game
development because all the game variables are displayed during gameplay,
which in turn allow the developers to debug the process at runtime.

42. Disadvantages of Unity
Tools: It does not offer an array of tools to create stupendous graphics as opposed
to other game development engines.
Physics: In Unity 5 engine, the built-in support for the PhysX physics engine has
some performance issues and lacks some important functionalities which need to
be added to craft the excellent game app.
License cost: The developers need to have licenses for the best graphics,
deployment and performance improvements.
Source code: Unavailability of the source code makes finding, addressing and
fixing the performance issues difficult.
Memory hogging: The game developed leveraging Unity engine consumes more
memory, which in turn creates OOM errors and debugging issues in the apps.

43. Conclusion
Unity is the world’s leading engine with most market share
Low barrier when to enter Game Development world
Quickest and easiest
2D and 3D capable
C# scripting
Tons of platform support
Can be used by both Beginners & Experts
AAA Quality

44. Do you have
any doubts?

45. References
Unity Technologies (05 June, 2020) – “Unity User Manual (2019.3)” from
https://docs.unity3d.com/2019.3/Documentation/Manual/UnityManual.html
Potenza Global Solutions (2020) – “5 Rarely Known Advantages And
Disadvantages Of Unity Game Development” from
https://www.potenzaglobalsolutions.com/blogs/5-rarely-known-
advantages-and-disadvantages-of-unity-game-development

46. Thank you