referencing a gameObject from a c# interface event in Unity

Question

I have an event manager in Unity which can handle events sent from scene components. The classes are all a bit abstracted from the standard Unity components. I am successfully able to fire an event from a button, and have that button's parent listen to the event (the onEventReceived you see below).

Using the Unity Debugger extension for VSCode, I can log the sender. If I type sender.gameObject and it returns a correct reference to the GameObject the sender is attached to. However, I cannot reference sender.gameObject within the OnEventReceived function itself - because it is of type ISceneComponent I suppose. How do I get a reference to the game object of the clicked sender?

Answer 1

I have run into your issue myself before.

The fix is quite simple.

Assuming that you created the interface ISceneComponent, add the gameObject field to your Interface

public interface ISceneComponent
{
    GameObject gameObject { get; set; }
    // ...
}

If the object implementing ISceneComponent also is a monobehaviour, gameObject will automatically be filled and you can reference it easily.