Question Use of Update()

Hi! First time on the forums.
I am new to Unity and want to have a button enabled/disabled depending on a toggle ("EditMode") state. I have it working, but understand using Update() is not good practice as it is being called every frame so could have some performance issues in the future. Wondering, in such a case as below, how could I write it so that I do not use the Update().

Code (CSharp):

1. public class EventLogic : MonoBehaviour
2. {
3.     [SerializeField] EditMode EditMode;
4.     public Button EventBtn;
5.     private void Start()
6.     {
7.         GameObject EditModeObject = GameObject.Find("EditMode");
8.         if (EditModeObject != null)
9.         { EditMode = EditModeObject.GetComponent<EditMode>(); }
10.  
11.         EventBtn = GetComponent<Button>();
12.     }
13.     private void Update()
14.     {
15.         EventBtn.enabled = !EditMode.EditModeChanged;
16.     }
17.     public void ButtonPressed()
18.     {
19.         if (EditMode.EditModeChanged == false)
20.         { Debug.Log("Button Pressed!"); }
21.     }
22. }

Any help is greatly appreciated!

 

You could probably hook up a event/delegate thing so that whenever the value gets changed, it runs specific code.

Code (CSharp):

1. // inside of your EditMode class
2. public class EditMode : MonoBehavior
3. {
4.   public delegate void BoolChange(bool value);  // the signature, it determines what kind of parameters and return value the event has
5.   public static event BoolChange EditModeChange;  // declares your event, it's static so that other classes can access it easily without a reference to the specific component
6.   // all your other stuff
7.   public bool SetEditMode(bool value)  // call this whenever you actually want to update the edit mode, and do anything else in there that you want to happen
8.   {
9.     EditModeChange(value);
10.   }
11. }

Code (CSharp):

1. public class EventLogic : MonoBehaviour
2. {
3.     // you don't even need a reference to your EditMode anymore if you're using a static event
4.     public Button EventBtn;
5.     private void Start()
6.     {
7.         EditMode.EditModeChange += SetButtonEnabled;  // tell the delegate which method to run
8.         EventBtn = GetComponent<Button>();
9.     }
10.     public void SetButtonEnabled(bool value)
11.     {
12.         EventBtn.enabled = !value; // set the value here or whatever
13.     }
14.     public void ButtonPressed()
15.     {
16.         if (EditMode.EditModeChanged == false)
17.         { Debug.Log("Button Pressed!"); }
18.     }
19. }

 

Amazing, thank you so much!