MonoBehaviour Lifecycle Basics - Awake OnEnable Start Update FixedUpdate | Unity C# Basics Part 3

Learn about the order of execution of events in Unity, or as I like to call it, the Component Lifecycle. This is critical to understand so you know with certainty when your Awake, Start, and Updates are being called! We'll even take a look at some examples of how you can get into trouble if you don't understand when they are called. To showcase these "lifecycle events" we'll also learn about how to create objects in the scene at runtime, and remove them!

If you've been using Unity for a while, or are just getting started with Unity and decided it's time for you to start learning how to write code - this is the video series you need to start your programming journey!

👨‍💻 As always, all code from this video is available on GitHub: https://github.com/llamacademy/unity-csharp-basics-3

🏷️Save 25% on the ultimate C# IDE: JetBrains Rider with code LLAMACADEMY: https://www.jetbrains.com/store/?section=personal&billing=yearly

Full Series Playlist Here: https://www.youtube.com/watch?v=SXaa61JWLDw&list=PLllNmP7eq6TTjwoyfRYAAFOH1sMHVgI1r

⚫ Part 1 - Writing your first script - https://youtu.be/SXaa61JWLDw

⚫ Part 2 - Loops and Arrays - https://youtu.be/MB6B9nHSrps

⚫ Part 3 - Unity Component Lifecycle - https://youtu.be/TD3yoFg3GVI

⚫ Part 4 - Static vs Instances - https://youtu.be/JRRlAzBh-6U

⚫ Part 5 - Delegates - https://youtu.be/1N6k7Hj_JKc

⚫ Part 6 - Inheritance & Interfaces - https://youtu.be/siRvSZzrhRU

⚫ Part 7 - Compositional Relationships - https://youtu.be/khIweJfnyW4

By this point, you've probably already used some of these lifecycle events, but maybe didn't fully understand how they were called or when they were called. In this tutorial you'll learn the order of execution of the following events, and what type of code you should generally put in those events:

⚫ Awake

⚫ Start

⚫ OnEnable

⚫ FixedUpdate

⚫ Update

📝📝📝YOUR HOMEWORK!📝📝📝

Using the prefab we created and used today and at least 1 new script (maybe you need more, maybe not, you decide 😉) make it where when the user left clicks in the top 10% of the screen, a new instance of our Count Down Text prefab is spawned at that left click location. Make the Count Down Text prefab start falling towards the bottom of the screen.

The Count Down Text should be destroyed under 2 conditions:

1. If the AutoDestroyText count down has reached 0.

2. If the Count Down Text has gone off screen (fallen out of view).

Here's some key resources for you to gather input from the user:

⚫ https://docs.unity3d.com/Packages/com.unity.inputsystem@1.0/manual/Mouse.html

⚫ https://docs.unity3d.com/Packages/com.unity.inputsystem@1.0/api/UnityEngine.InputSystem.Controls.ButtonControl.html

Add a comment below with a video showing your code and the end result.

📚 Here are the resources I mentioned and/or brought up during the video 📚

⚫ Order of Execution: https://docs.unity3d.com/Manual/ExecutionOrder.html

⚫ GetComponent: https://docs.unity3d.com/ScriptReference/Component.GetComponent.html

⚫ Instantiate: https://docs.unity3d.com/ScriptReference/Object.Instantiate.html

⚫ Destroy: https://docs.unity3d.com/ScriptReference/Object.Destroy.html

⚫ Vector3s: https://docs.unity3d.com/ScriptReference/Vector3.html

⚫ Quaternions: https://docs.unity3d.com/ScriptReference/Quaternion.html

⚫ Screen: https://docs.unity3d.com/ScriptReference/Screen.html

⚫ Time: https://docs.unity3d.com/ScriptReference/Time.html

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