Level Up for 2025: Ace the Unity Certified Associate Game Dev Challenge!

When an object is enabled in Unity, the method that is called is OnEnable(). This is a special Unity callback function that is invoked whenever a script or game object is enabled, which includes when the game starts and when the object becomes active or re-activated in the hierarchy during gameplay. OnEnable() is particularly useful for initializing conditions or data that needs to be set up once the object becomes part of the active scene.

The method is not called OnStart(), as that is not a recognized Unity lifecycle method. OnStart() could confuse students since there is a popular method called Start(), but that is called once on the first frame the object is enabled, not every time it becomes enabled.

Although OnEnabled() and OnActivate() might seem plausible at first glance, they do not exist as predefined Unity methods. Understanding the correct method call for enabling objects is crucial for effective game development in Unity, as it directly relates to when to set up or reset states for object functionality.