Unity Game Engine - Basics
- 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.
- 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