Uploaded August 2026 | Updated September 2026, 3 hours ago

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Learn how to build Craig Reynolds' classic Boids algorithm from scratch in Unity. In this tutorial, we'll implement separation, alignment, cohesion, obstacle avoidance, and boundary steering while breaking down every line of code along the way. Whether you're creating flocks of birds, schools of fish, or swarms of AI agents, you'll come away understanding not just how the algorithm works, but why a handful of simple local rules can produce such convincing emergent behavior. This is also a great starting point for experimenting with DOTS, Burst, and other optimizations for simulating thousands of agents.

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▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬

0:00 Spawner
3:56 Boids Agent
7:38 Boids Algorithm

Code gist.github.com/adammyhre/73082cf86dba7d136d9ee4d72009472b

More Useful Code:
github.com/adammyhre?tab=repositories
Unity Utility Library: github.com/adammyhre/Unity-Utils
Lock Inspector Hotkey: gist.github.com/adammyhre/4754f731a93bf1cab0d1385ccfa23642

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Ultimate Preview - assetstore.unity.com/packages/tools/utilities/ultimate-preview-bundle-340976?aid=1101lw3sv
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Init(args) - assetstore.unity.com/packages/tools/utilities/init-args-200530?aid=1101lw3sv
Wingman - assetstore.unity.com/packages/tools/utilities/wingman-your-inspector-s-best-friend-303181?aid=1101lw3sv
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Rabbit Logger - assetstore.unity.com/packages/tools/utilities/rabbit-logger-305396?aid=1101lw3s

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