How do you make a GameObject interactable in Unity?

To make a GameObject interactable in Unity, adding components such as Colliders and event handling scripts is essential. Colliders are necessary because they define the physical shape of the GameObject, allowing it to detect collisions and interactions with other objects. For instance, if a player clicks on a button or interacts with an object, the Collider will register that interaction.

Event handling scripts, such as those that respond to user inputs (like OnMouseDown or UnityEvent for UI elements), enable you to define what happens when the GameObject is interacted with. This means that without these components, a GameObject would be unable to respond to interactions like mouse clicks, touches, or other input methods.

Changing a GameObject's color or increasing its scale may affect how it looks or fits in the scene, but these actions do not inherently make it interactable. Similarly, placing a GameObject in the main camera's view can make it visible to the player, but it does not create interactable capabilities. Therefore, utilizing Colliders and event handling scripts is the fundamental approach to achieving interactivity in a Unity project.