Most Unity Devs Use GetComponent() Wrong
Most Unity developers use GetComponent at some point, but very few understand how their usage patterns affect a project over time. This video explains why GetComponent is not inherently bad, yet often becomes a source of bugs, hidden performance issues, and tightly coupled code as Unity projects grow.
We go through what GetComponent actually does, why calling it in Update is usually discouraged, and when it is acceptable during prototyping. You will learn how repeated lookups, silent null references, and hidden dependencies cause code to age poorly and become harder to maintain months later.
This video also covers coupling in Unity, why it is a problem, and how poor GetComponent usage makes systems fragile. We look at performance costs, especially when GetComponent returns null repeatedly, and why those issues often show up late in development instead of early.
You will see when to use TryGetComponent, how RequireComponent helps prevent future bugs, and why choosing between Awake and Start matters for long term stability. We also talk about using GetComponent in collision and trigger events, how the collision matrix can reduce unnecessary calls, and how class inheritance with abstract or virtual methods can make your systems scale cleanly.
This is not a beginner tutorial on syntax. It is a practical discussion about writing Unity code that survives refactors, team growth, and time. If you want your Unity projects to remain stable and understandable as they grow, this video will help you avoid habits that hurt later.
Checkout the full 100 Tips in Unity playlist:
• 100 Tips in Unity
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TIMESTAMPS 🔍
0:00 Intro
0:31 What is GetComponent()?
1:00 Start vs Awake, Null checks, RequireComponent
2:49 Mistake 1
4:01 Mistake 2
6:44 Mistake 3
9:16 A Situation where Avoiding GetComponent is better
11:26 BONUS TIP: Better Workflow
15:35 Conclusion
If you have any questions, comment below, and I will try to answer them to the best of my knowledge.
Thank you for watching the video and reading this description. Take care.
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