How can I make GUIText work?

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. public class LevelUp : MonoBehaviour {
4.     int LevelyUp = 0;
5.     void OnClick(GameObject a) {
6.         LevelyUp++;
7.         UnityEngine.GUIText.text = "You have this many xp points: " + LevelyUp.ToString() + "$";
8.     }
9. }

I want GUIText to say something like "You have this many xp points: " + LevelyUp.ToString() + "$";
I tried a few methods before, but they didn't seem to work. I use Unity 5.1, by the way.

Error:
Assets/LevelUp.cs(5,24): error CS0236: A field initializer cannot reference the nonstatic field, method, or property `UnityEngine.Component.GetComponent(System.Type)'

 

Hello,

GUIText is a class, and "text" is not a static member. Only method or properties declared as static can be used directly on the class.
An instantiated object is needed to use the .text.
You should have a GUIText component attached to your LevelUp object.
You can

Code (csharp):

1.  
2. // declare a var to hold the component ref
3. private GUIText textUI;
4. // initialize your component in awake
5. void Awake(){
6.     textUI = GetComponent<GUIText>(); // assuming there a GUIText component attached
7. }
8.  
9. // now you can change the text
10. void OnClick(GameObject a) {
11.         LevelyUp++;
12.         textUI.text = "You have this many xp points: " + LevelyUp.ToString() + "$";
13.         Debug.Log(textUI.text); // You can call the Log function directly on Debug class because the Log function is static.
14. }
15.  

 

You should also stop using GUIText
There's like 4 different ways to do text in-game, and you picked the oldest and least convenient option

 

What component should I use?

 

Related to current code, Add Component -> GUI Text.
But that's true it's the oldest method. In order to use last tools provided by Unity i suggest you to check https://unity3d.com/learn/tutorials/topics/user-interface-ui
your currently interested in UI Text component.

 

Thanks both @kietus and @hpjohn, I'll try to use UI Text

 

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4. public class LevelUp : MonoBehaviour {
5.     int LevelyUp = 0;
6.  
7.     // declare a var to hold the component ref
8.     private GUIText textUI;
9.     // initialize your component in awake
10.     void Awake(){
11.         textUI = GetComponent<GUIText>(); // assuming there a GUIText component attached
12.     }
13.  
14.     // now you can change the text
15.     void OnClick(GameObject a) {
16.         LevelyUp++;
17.         textUI.text = "You have this many xp points: " + LevelyUp();
18.         Debug.Log(textUI.text); // You can call the Log function directly on Debug class because the Log function is static.
19.     }
20. }

Two errors when I use UI text:
Assets/LevelUp.cs(9,70): error CS0019: Operator `+' cannot be applied to operands of type `string' and `method group'
Assets/LevelUp.cs(10,42): error CS0119: Expression denotes a `type', where a `variable', `value' or `method group' was expected

For the first error, I would like to convert some GUIText to UI.Text

The reason why I'm changing to UI.Text is because GUIText didn't show "You have this many xp points:" and the int LevelyUp.

 

Remove the brackets on line 17. Variables do not need to be invoked.

 

No errors , but the text doesn't show up

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4. public class LevelUp : MonoBehaviour {
5.     int LevelyUp = 0;
6.    
7.     // declare a var to hold the component ref
8.     private GUIText textUI;
9.     // initialize your component in awake
10.     void Awake(){
11.         textUI = GetComponent<GUIText>(); // assuming there a GUIText component attached
12.     }
13.    
14.     // now you can change the text
15.     void OnClick(GameObject a) {
16.         LevelyUp++;
17.         textUI.text = "You have this many xp points: " + LevelyUp;
18.         Debug.Log(textUI.text); // You can call the Log function directly on Debug class because the Log function is static.
19.     }
20. }

 

What is OnClick
theres no such method called automatically
maybe you mean OnMouseDown