Blinking text couritine

Hello

I am trying to do a blinking text with corutine:

In the text 2d text I have the following example code:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class BlinkingTextCorutina: MonoBehaviour
{
Text flashingText;
void Start ()
{
flashingText = GetComponent <Text> ();
StartCoroutine (BlinkText ());

}

// Update is called once per frame
IEnumerator BlinkText ()
{
// blink it forever. You can set a terminating condition depending upon your requirement
while (true)
{
// set the Text's text to blank
flashingText.text = "";
// display blank text for 0.5 seconds
yield return new WaitForSeconds (.00005f);
// display “I AM FLASHING TEXT” for the next 0.5 seconds
flashingText.text = "I AM FLASHING TEXT!";
yield return new WaitForSeconds (.00005f);
}
}
}

But the problem I have is that in the first yield it is exited and it no longer passes to the next one, is that normal?

I can't get the flicker to be constant.

bye

 

If you want to wait 0.5 seconds, you have to use 0.5f inside your WaitForSecond and not this .00005f

 

Code (CSharp):

1. yield return new WaitForSeconds (.00005f);

This does not wait for .5 seconds... This waits for 5/100000s of a second... In reality since your game won't run faster than ~60-100 FPS, it will just wait until the next frame.

Try this:

Code (CSharp):

1. yield return new WaitForSeconds (.5f);

 

Hi !

Thank for the answers, but problem is not that,
the problem is that in yield the couritine comes out and the blinking does not repeat. so it only runs the "yield return new WaitForSeconds (.5f)" line once.

Can you help me know why this comes out?

Bye

 

Hi

Investigating I have seen that the yield retrun null statement works correctly, the problem is when I use new WaitForSeconds (0.5f); it gets out of the coroutine and it no longer works, that is, it doesn't wait half a second.

I hope you can help me know why new WaitForSeconds (0.5f) doesn't work;

regards

 

Are you disabling the Text gameobject, or any of its parents?
That will shutdown the coroutine. And it won't start again when reenabling, because StartCoroutine is in your Start function, which is only called once.

Try putting the StartCoroutine in OnEnable

Code (CSharp):

1.     private void OnEnable()
2.     {
3.         StartCoroutine(BlinkText());
4.     }

You will have to move your initializer code from your Start function to an Awake function instead though, to avoid null reference errors, as OnEnable is called before Start but after Awake

Code (CSharp):

1.  
2. [RequireComponent(typeof(Text))]
3. public class BlinkText : MonoBehaviour
4. {
5.     public float BlinkTime;
6.     private string textToBlink;
7.     private Text textComponent;
8.    
9.     void Awake()
10.     {
11.         textComponent = GetComponent<Text>();
12.         //Set the Text that will be blinked from the inspector of the text component
13.         textToBlink = textComponent.text;
14.     }
15.  
16.     private void OnEnable()
17.     {
18.         StartCoroutine(Blink());
19.     }
20.  
21.     IEnumerator Blink()
22.     {
23.         while (true)
24.         {
25.             textComponent.text = textToBlink;
26.             yield return new WaitForSeconds(BlinkTime);
27.             textComponent.text = string.Empty;
28.             yield return new WaitForSeconds(BlinkTime);
29.         }
30.     }
31.  
32. }
33.  

 

hi

thanks it's already solved

With the code:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.UI;
5.  
6. public class BlinkingTextCorutina : MonoBehaviour
7. {
8.     Text flashingText;
9.     string textToBlink;
10.     public float BlinkTime;
11.  
12.      void Awake()
13.     {
14.         flashingText = GetComponent<Text>();
15.         textToBlink = flashingText.text;
16.         BlinkTime = 0.5f;
17.     }
18.     void OnEnable()
19.     {
20.    
21.         StartCoroutine(BlinkText());
22.      
23.      
24.     }
25.  
26.  
27.  
28.     IEnumerator BlinkText()
29.     {
30.         while (true)
31.         {
32.             flashingText.text = textToBlink;
33.             yield return new WaitForSeconds(BlinkTime);
34.             flashingText.text = string.Empty;
35.             yield return new WaitForSeconds(BlinkTime);
36.         }
37.     }
38. }
39.  

And modifying one thing in the parent object that was also wrong I have made it work.
The problem is that you were enabling the parent object when calling it in another script.

It works like this too:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.UI;
5.  
6. public class BlinkingTextCorutina : MonoBehaviour
7. {
8.     Text flashingText;
9.     string textToBlink;
10.     public float BlinkTime;
11.  
12.      void Start()
13.     {
14.         flashingText = GetComponent<Text>();
15.         textToBlink = flashingText.text;
16.         BlinkTime = 0.5f;
17.         StartCoroutine(BlinkText());
18.     }
19.  
20.  
21.  
22.  
23.     IEnumerator BlinkText()
24.     {
25.         while (true)
26.         {
27.             flashingText.text = textToBlink;
28.             yield return new WaitForSeconds(BlinkTime);
29.             flashingText.text = string.Empty;
30.             yield return new WaitForSeconds(BlinkTime);
31.         }
32.     }
33. }
34.  

Thank you very much!!!