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Question by Chocolade · Nov 04, 2017 at 09:58 PM · c#scripting problemscript.

How can i check if the alpha color or the material color is transparent ?

I have a Plane in the Hierarchy the Plane is black and i added a material to the Plane and in the Material after changed the Material to black i also changed it to Sprites > Diffuse

The script is working as it is now.

It will change from black to transparent like awaking effect. And if i change the fade bool state while the game is running it will change the fading to black or from black.

But now i need to do more two things and not sure how to:

1 Make that when the plane or maybe it's the material on the plane i'm not sure is transparent not black any more then do something for example make fpc.enabled = true; again.

2 Make the fade in out automatic now i'm using the bool fade and i change the state on my own but i want to do that once the plane or material is transparent make it back slowly black again and so on none stop automatic fade in/out.

Not sure if i should use startcoroutine for this or not and how to do it. For example now after the player is awake the fpc is still enabled false the idea the logic is that once the awake effect the fade effect finish the player can move fpc.enabled = true; but i don't know when the fading effect has finished reached to the end.

 using System.Collections;
     using System.Collections.Generic;
     using UnityEngine;
     using UnityStandardAssets.Characters.FirstPerson;
     
     public class FadeScript : MonoBehaviour
     {
         public FirstPersonController fpc;
         public bool fade = true;
     
         // Use this for initialization
         void Start()
         {
             Color tempcolor = GetComponent<Renderer>().material.color;
             tempcolor.a = 1f;
             GetComponent<Renderer>().material.color = tempcolor;
     
             fpc.enabled = false;
         }
     
         // Update is called once per frame
         void Update()
         {
             Color tempcolor = GetComponent<Renderer>().material.color;
             if (fade == true)
             {
                 tempcolor.a -= 0.1f * Time.deltaTime;
             }
             else
             {
                 tempcolor.a += 0.1f * Time.deltaTime;
             }
             GetComponent<Renderer>().material.color = tempcolor;
         }
     }
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Answer by pako · Nov 05, 2017 at 09:48 AM

@Chocolade add 2 more bool variables: isBlack and isTransparent, and then change your existing Update with the one below:

 bool isBlack
 bool isTransparent
   
 void Update()
 {
  Color tempcolor = GetComponent<Renderer>().material.color;
  
  isBlack = Mathf.Approximately(tempcolor, 1f);
  isTransparent = Mathf.Approximately(tempcolor, 0f);
  
  if(isBlack)
  {     
     fade = true;     
  }
  else if(isTransparent)
  {     
     fade = false;
  
     //do something for example:
     fpc.enabled = true; 
  }
  
  if (fade == true)
  {
      tempcolor.a -= 0.1f * Time.deltaTime;
  }
  else
  {
      tempcolor.a += 0.1f * Time.deltaTime;
  }
  
  GetComponent<Renderer>().material.color = tempcolor;
 }
 

I haven't tested this, but it should work. Let me know if there's a problem with it.

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avatar image pako · Nov 07, 2017 at 01:21 PM 0
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@Chocolade did this work for you or not?

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