Unity Fundamentals

The Unity MonoBehaviour lifecycle manages script execution order, using Awake for instance initialization, OnEnable for activation, and Start for pre-first-frame setup. It provides structured guidance on distinguishing these phases to prevent execution order bugs.

Caching GetComponent results in Unity avoids repeated expensive calls. By composing behavior with the component pattern, you retrieve references once during initialization, improving performance and creating modular, reusable architecture across GameObjects.

Using SerializeField in Unity exposes private fields to the inspector without breaking encapsulation, enabling data persistence. Combined with prefab workflows, including variants and overrides, it ensures consistent object configuration across real projects.

ScriptableObjects in Unity store shared data assets independent of scene hierarchy. You can use them with prefabs to centralize configuration, allowing multiple GameObjects to reference identical data and ensuring consistent behavior across instances.

Unity prefab overrides can fail on nested instances due to incorrect override hierarchy management. Understanding prefab variants and override application rules ensures modifications propagate correctly, resolving common prefab workflow inconsistencies in real projects.