How to do a delay in void Update?

Questions & Answers
1

What is the best way to do a delay in void Update? There’s the I WANT THE DELAY HERE where i want to place it.

void Update ()
    {
        if (lidCheck == false)
        {
            myLight.range = Mathf.Lerp(myLight.range, 0.0f, Time.deltaTime * 3);
            **I WANT THE DELAY HERE**
            Sparks.SetActive(false);
            Fire.SetActive(false);
            Flames.SetActive(false);
            Glow.SetActive(false);
        }

        if (lidCheck == true)
        {
            myLight.range = Mathf.Lerp(myLight.range, 6.0f, Time.deltaTime/2);
            Sparks.SetActive(true);
            Fire.SetActive(true);
            Flames.SetActive(true);
            Glow.SetActive(true);
        }
    }

    void OnTriggerStay (Collider other)
    {
        if (other.gameObject.tag == "Player")
        {
            if (Input.GetKey(KeyCode.E))
            {
                anim.Play("openlid");
                lidCheck = true;
            }

            if (Input.GetKey(KeyCode.R))
            {
                anim.Play("closelid");
                lidCheck = false;
            }
        }
    }
2

I don’t advise you to use the Update function in your case but coroutines:

void OnTriggerStay (Collider other)
{
    if (other.gameObject.tag == "Player")
    {
        if (Input.GetKey(KeyCode.E))
        {
            StartCoroutine( OpenLid() ) ;
        }

        if (Input.GetKey(KeyCode.R))
        {
            StartCoroutine( CloseLid() ) ;
        }
    }
}

IEnumerator OpenLid()
{
    anim.Play("openlid");
    float initialRange = myLight.range ;
    float lerpDuration = 1 ;
    
    for( float t = 0 ; t < lerpDuration ; t += Time.deltaTime )
    {
        myLight.range = Mathf.Lerp(initialRange, 0.0f, t / lerpDuration);
        yield return null ;
    }
    Sparks.SetActive(false);
    Fire.SetActive(false);
    Flames.SetActive(false);
    Glow.SetActive(false);    
}

IEnumerator CloseLid()
{
    anim.Play("closelid");
    float initialRange = myLight.range ;
    float lerpDuration = 2 ;

    Sparks.SetActive(true);
    Fire.SetActive(true);
    Flames.SetActive(true);
    Glow.SetActive(true);
    
    for( float t = 0 ; t < lerpDuration  ; t += Time.deltaTime )
    {
        myLight.range = Mathf.Lerp(initialRange, 6.0f, t / lerpDuration);
        yield return null ;
    }
}

If you really want to keep your Update function, try this:

private float lidClosedTime ;

void Update ()
 {
     if (lidCheck == false)
     {
         myLight.range = Mathf.Lerp(myLight.range, 0.0f, Time.deltaTime * 3);
         if( Time.time - lidClosedTime > 2 )
         {
             Sparks.SetActive(false);
             Fire.SetActive(false);
             Flames.SetActive(false);
             Glow.SetActive(false);
         }
     }

     if (lidCheck == true)
     {
         myLight.range = Mathf.Lerp(myLight.range, 6.0f, Time.deltaTime/2);
         Sparks.SetActive(true);
         Fire.SetActive(true);
         Flames.SetActive(true);
         Glow.SetActive(true);
     }
 }

 void OnTriggerStay (Collider other)
 {
     if (other.gameObject.tag == "Player")
     {
         if (Input.GetKey(KeyCode.E))
         {
             anim.Play("openlid");
             lidCheck = true;
         }

         if (Input.GetKey(KeyCode.R))
         {
             anim.Play("closelid");
             lidCheck = false;
             lidClosedTime = Time.time ;
         }
     }
 }
3

Thank you so much!! It’s perfect, i could kiss you.