Flickering effect?

Question

Hello. Does anyone have any ideas on how I can make objects flicker for a second or two before they are instantiated? Thanks

Answer 1

Answer by yoyo · Dec 05, 2010 at 10:34 PM

You can use a co-routine that is launched on start, something like this:

void Start() { StartCoroutine(Blink(5, 0.2f, 0.4f)); }

IEnumerator Blink(int nTimes, float timeOn, float timeOff)
{
    while (nTimes > 0)
    {
        renderer.enabled = true;
        yield return new WaitForSeconds(timeOn);
        renderer.enabled = false;
        yield return new WaitForSeconds(timeOff);
        nTimes--;
    }

 renderer.enabled = true;

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Answer 2

You can enable and disable the renderer for a period of time. Ive attached a C# script as example:

using UnityEngine; using System; using System.Collections;

public class Test : MonoBehaviour
{
    float startingTime = 0;
    bool isStarted = false;
    bool hasBlinked = false;

 void Update()
 {
     if (!hasBlinked) //Check if the blinking occured already
     {
         if (!isStarted) //Check if the start time is set
         {
             //Set start time
             startingTime = Time.time;
             isStarted = true;
         }
         else
         {
             if ((Time.time - startingTime) &gt;= 2) //Stop after 2 seconds
             {
                 this.hasBlinked = true;
                 this.renderer.enabled = true;
             }
             else //Blink
             {
                 this.renderer.enabled = false;
                 StartCoroutine(EnableRenderer());
             }
         }
     }
 }

 IEnumerator EnableRenderer() //Blink every time.
 {
     this.renderer.enabled = true;
     yield return new WaitForSeconds(0.2F); //Wait after each blink
 }

Flickering effect?

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