Fade out problem.

Hello I want unity to fade out from red to clear if hurt == true, I use this code:

Code (csharp):

1.  
2. function OnGUI()
3. {
4. if(hurt)
5.     {
6.     GUI.color = Color.red;  
7.     GUI.color.a = Mathf.Lerp(1, 0, 4*Time.deltaTime);    
8.     GUI.DrawTexture(Rect(0, 0, Screen.width, Screen.height), faderTexture);
9.     }
10. }
11.  

but the screen becomes red and no fading happens (Actually I increased Lerp timing to 4, and now I can see screen blinking, changing opacity up and down) , I`m pretty sure that happens because I dont turn "hurt" variable to false. BUUUUUUT
I have tried typing hurt = false; in the end of the code aswell as WaitForSeconds(4) then hurt = false, but then nothing appears on the screen at all.
Please help.

 

Your Lerp is all wrong.

 

This seriously needs to be a sticky. Just this. With the title "Lerp Problems".

 

because the code tag sticky works

 

Ok ok. Maybe my lerp is all wrong. I have also tried this code from the web:

Code (csharp):

1.  
2. [LIST=1]
3. [*]#pragma strict
4. [*]// FadeInOut
5. [*]var fadeTexture :Texture2D;
6. [*]var fadeSpeed =0.2;
7. [*]var drawDepth =-1000;
8. [*]privatevar alpha =1.0;
9. [*]privatevar fadeDir =-1;
10. [*]functionOnGUI(){
11. [*]alpha += fadeDir * fadeSpeed *Time.deltaTime;
12. [*]alpha =Mathf.Clamp01(alpha);
13. [*]GUI.color.a = alpha;
14. [*]GUI.depth = drawDepth;
15. [*]GUI.DrawTexture(Rect(0,0,Screen.width,Screen.height), fadeTexture);
16. [*]}
17. [/LIST]
18.  
19.  

(sorry for poor pasting, cant be bothered to fix it..) anyways, same thing happens.

 

I can't really be bothered to make a useful contribution to this thread either.

 

Why even reply then?

 

Welcome to Unity Forum and you successfully put yourself in the position of not being supported with this kind of behaviour... This forum is not about googling for a code, not understanding it but thinking, it could work and pasting it here so someone else figures out the code for you... That behaviour becomes kind of common in here, and sorry, but anyone able to help you won't do it with this attitude. Cheers

 

I was trying to be clever and funny and teach you a valuable lesson about getting help on the forums. Since it didn't work I'll be more explicit. If you can't be bothered to make it easy for people to help you, why should any of the community volunteers take time out of their life to help you? There are plenty of other people willing to put in some effort.

 

Dying of laughter, bro.

[*] in front of each line makes it really hard to read I guess...

Because some nice and clever people rather ''take time out of their life'' while helping someone than discussing some unnecessary *poop*. Whatever, have a good day.

 

Try changing:

Code (csharp):

1.  
2. GUI.color.a = alpha;
3.  

to:

Code (csharp):

1.  
2. GUI.color = Color(1.0, 1.0, 1.0, alpha);
3.  

And get rid of the GUI.depth = drawDepth line.

 

@GroZZleR cheers man, I`ve just tried it - no luck.
Looks like nothing changes at all. I have debug logged the "alpha" though and the values keeps changing from something like:
0.99 - 0.98, goes up and down all the time.

If you got any other ideas I would be pleased to hear em ^^ anyways ty.

 

I advice you looking into the new UI, as it is up to date. I would not use OnGUI at all anymore:
http://answers.unity3d.com/questions/780323/unity-ui-fading-canvaspanel.html

There you can see how to use the new UI to fade canvas / color
Also check the tutorial about the new UI if you want to get more into depth:
https://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/the-new-ui

 

Code (CSharp):

1. {
2.    StartCoroutine(Fading(0f, 1f, 5f));
3. }
4.  
5. IEnumerator Fading(float p, float q, float duration) {
6.     float time = 0f;
7.     while (time < duration) {
8.        time += Time.deltaTime;
9.        ????.alpha = Lerp(p, q, time, duration);
10.        yield return null;
11.     }
12.     ????.alpha = q;
13. }
14.  
15. float Lerp(float p, float q, float time, float duration) {
16.     if (duration == 0f)
17.        return q;
18.     return Mathf.Min(1f, Mathf.Lerp(p, q, time/duration));
19. }

 

This script 100% works for me:


I moved a bit of it to Update instead of OnGUI so it's more consistent (OnGUI can be called multiple times per frame):

Code (js):

1.  
2. #pragma strict
3.  
4. public var fadeTexture : Texture2D;
5. public var fadeSpeed : float = 0.2;
6.  
7. private var alpha : float = 1.0;
8. private var fadeDir : float = -1;
9.  
10. function Update()
11. {
12.   alpha += fadeDir * fadeSpeed * Time.deltaTime;
13.   alpha = Mathf.Clamp01(alpha);
14. }
15.  
16. function OnGUI()
17. {
18.   GUI.color = Color(1.0, 1.0, 1.0, alpha);
19.   GUI.DrawTexture(Rect(0, 0, Screen.width, Screen.height), fadeTexture);
20. }
21.  

If this doesn't work, there's something else wrong.

 

GREAT help guys, thank you all. ^^
@GroZZleR this one works perfectly <3