Companion AI | AI Series Part 38

Learn how to create your very own Companion AI! In this tutorial video you will learn how to create a companion that follows the player when the player moves, rotates around the player when idle, and attacks nearby Attackable GameObjects when they come within range!

A very common mechanic in video games is to have AI that follows around the player. Some, like we're implementing today, are relatively simplistic and simply follow the player, maybe attack things, and provide guidance and a sounding board for the player throughout the game. Some are more complex with their own complex behavior trees to manage commands issued to them and responding to complex scenarios.

Today you will learn the fundamentals of creating a companion AI that can be extended to more complex use cases, or used "as is" if this is your use case!

As usual with the AI Series, we're using the NavMesh Components: https://docs.unity3d.com/Manual/NavMesh-BuildingComponents.html not the built-in navigation system.

👨‍💻 As always, all code from this video is available on GitHub: https://github.com/llamacademy/ai-series-part-38

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

🧡 Believe in LlamAcademy's mission and have received value from the videos? Here's how you can show your support:

🌟 Patreon: https://www.patreon.com/llamacademy

🌟 YouTube Member: https://www.youtube.com/channel/UCnWm6pMD38R1E2vCAByGb6w/join or click the Join button on any video

📚 Take my Unity ShaderGraph Course:

https://www.gamedev.tv/p/unity-shader-graph?affcode=45216_kuvg0bp7

👕 Get yourself some LlamAcademy merch: https://llamacademy.myspreadshop.com/

💸 Use my Affiliate Link for Humble Bundles https://humblebundleinc.sjv.io/9g4ak4

💸 Publisher Sale! 50% OFF an entire publisher's Assets! Publisher changes weekly! https://assetstore.unity.com/publisher-sale?aid=1101l9QvC (affiliate)

💸 Save up to 50% on NEW Assets: https://assetstore.unity.com/?new_sale=true&orderBy=1&aid=1101l9QvC (affiliate)

Some links may be affiliate links, which at no additional cost to you, gives me a small portion of the purchase.

Chapters

00:00 Companion AI Overview

02:48 Player / Companion Component Overview

04:33 Player.cs

05:00 AbstractStateBehaviour.cs

05:45 Companion.cs

06:00 PlayerMovement.cs - Raising State Change Events

06:53 CompanionMovement.cs - Synchronizing States Between Player and Companion

11:45 CompanionAttack.cs