[Solved] How to set up a Class Instance

Hello,

I have set up a simple class with a name variable and a method to update that variable.

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class Player
6. {
7.     public string name;
8.  
9.     public Player()
10.     {
11.         this.name = "";
12.     }
13.  
14.     public void UpdateName(string val)
15.     {
16.         this.name = val;
17.     }
18. }
19.  

And I am working on creating a UI that can edit an instance of this class, and I have it set up this way.

So if I make an instance of this class in a script attached to Canvas, how would I call that instance's UpdateName method on the InputField's OnEndEdit() event? I appreciate any help, sorry if I'm not explaining what I want well, I'm experimenting with classes for the first time.

 

This is actually a thing you will NEVER do in Unity. The reasons are:

a) nothing is "attached" to Canvases

b) Components are added to GameObjects using AddComponent<T>() method (Canvases are incidentally a type of Component)

c) classis can be MonoBehaviours (which are a type of Component) and need to be derived from that base in order to be used by AddComponent<T>()

d) You will NEVER call new on a MonoBehaviour, only AddComponent<T>();, where Unity will make it for you

You probably want to go check out some basic scripting tutorials before you waste a lot of time trying to write code as if Unity doesn't exist and go straight C#. All the C# stuff exists, but anything that interoperates with Unity, which lives completely outside of C#, needs to be done properly using the Unity API, or it will be dead on arrival.

Imphenzia / imphenzia - super-basic Unity tutorial:

Jason Weimann:

Brackeys super-basic Unity Tutorial series:

Sebastian Lague Intro to Game Development with Unity and C#:

Imphenzia: How Did I Learn To Make Games:

 

Either Kurt misread, or I am, but you'll need to have an intermediary method that handles the event and manipulates your instance. Create a NamePageWindow MonoBehaviour that's attached to your NamePage object with an OnNameEntered method that your InputField invokes for your onEndEdit. During that method, find the object (either linked in the inspector or a static/singleton, whatever) with the Player instance and call UpdateName().

 

https://docs.unity3d.com/2018.4/Documentation/ScriptReference/UI.InputField-onEndEdit.html

So, something like

Code (CSharp):

1. InputFieldReference.onEndEdit.AddListener(delegate {PlayerReference.UpdateName(InputFieldReference.text); });

You could also hook the method up to fire on the event just from the unity inspector, without code, because onEndEdit is a unity event. You should learn to do both, though.

 

Thank you all for your help. I tried GroZZleR's method and it worked well. I'm going to try Hikiko66's suggestion also. Thank you all for the help.