Three.js Architecture: MVC

It's easy to start a Three.js project, but keeping it maintainable as features grow is a different story. Many developers find themselves with massive files where input, physics, and rendering are all mixed together. When your logic is this tangled, even small changes can break parts of the app that seem unrelated. We often use structured patterns like MVC or Clean Architecture in web and mobile apps, but for some reason, we forget them once we enter a 3D scene. Instead of clean separation, we default to global variables or deeply nested classes. In my previous article on ECS, we explored how a data-driven approach can help. However, if you are more comfortable with traditional patterns, MVC is an excellent way to organize a Three.js codebase. In this article, we'll build a Three.js application using the Model-View-Controller pattern. We'll separate our application state from the 3D visuals. This will keep the logic predictable, maintainable, and easier to test. 🔗 The Final Result: Gi