Get Screen Y Of A GUI Button / Get Pressed GUI Button - In C# Script Code?

Hi,

Have two questions about the built-in GUI button system:'
(1) How do we get screen Y of a GUI button(from C# script code)?
(2) How do we get pressed GUI button value(from C# script code)?

Let us know, thanks!

Jesse

 

One more question:
(3) When I run the game, the first button is not selected by default?

 

Hi,

We solved question #3 above:
- Go into Event System and change "First Selected" to the button you want selected by default...

Jesse

 

Hi,

We attached the same C# script to every button.
We are trying to change the Y position of a sprite in the C# script, but it's not working?

Please view source below:
Thanks!

Jesse

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class TitleScreenButtonLogic : MonoBehaviour
6. {
7.     // Start is called before the first frame update
8.     void Start()
9.     {
10.      
11.     }
12.  
13.     // Update is called once per frame
14.     void Update()
15.     {
16.         float buttonScreenY = this.transform.position.y;
17.  
18.         Vector3 buttonSelectorLeftPos = GameObject.Find("Button-Selector-Left").transform.position;
19.  
20.         buttonSelectorLeftPos.y = buttonScreenY; // Does not set Y position of sprite?
21.  
22.     }
23. }
24.  

 

Of course it won't: Vector3 is a value type, not a reference type. Line 18 above makes a copy.

If you want you can assign it back into the

transform.position

Further reading:

https://forum.unity.com/threads/hel...a-game-object-with-code.1047332/#post-6779456

Remember the first rule of GameObject.Find(): DO NOT USE GameObject.Find();

You have been warned.

 

Well, ok...

What do we use in replacement of GameObject.Find() ?

 

Not sure how you missed the memo, since even Unity discourages use of it.

But start here for more details and replacement options:

https://starmanta.gitbooks.io/unitytipsredux/content/first-question.html

If that doesn't convince you, just google for it.

 

I recommend trying some of the beginner Unity tutorials:

https://unity.com/learn

If you are already an experienced programmer, they can seem pretty basic at times (e.g. teaching you what an if statement is), but they will help you learn how Unity works, and how to do things the Unity Way.

Changing a components position is one of the earliest things taught in any tutorial.