Time for action – adopting an interface

To keep things simple, let's have the game manager adopt our new interface and implement its blueprint.

Update GameBehavior with the following code:

 // 1
 public class GameBehavior : MonoBehaviour, IManager
 {
     // 2
     private string _state;
 
     // 3
     public string State 
     {
         get { return _state; }
         set { _state = value; }
     }

     // ... No other changes needed ...
 
     // 4
     void Start()
     {
         Initialize();
     }
 
     // 5
     public void Initialize() 
     {
         _state = "Manager initialized..";
         Debug.Log(_state);
     }
 
     void OnGUI()
     {
         // ... No changes needed ...
     }
 }
  

Let's break down the code:

1. First, it declares that GameBehavior adopts the IManager interface using a comma and its name, just like with subclassing.
2. Then, it adds a private variable that we'll use to back the public State value we have to implement from IManager...