Calling function every x seconds but objects disappearing instantly

Question

function is being called properly however the objects only flash into view then disappear. There is no external source causing - it works well if a keystroke calls the function within update, but on any sort of time interval, whether Invoke() or otherwise - the objects only flash for an instant

 var timeBetweenTris:float = 0;
 
 function Start () {
 }
 
 function Update () {
 
     timeBetweenTris += Time.deltaTime;
     if(timeBetweenTris >= 5) {
         GenerateTri();
         timeBetweenTris = 0;
     }
 }
 
 function GenerateShape() {
     var randomNumber = Random.Range(1,9);
     if(randomNumber < 4) {
         return sphere;
     }
     else if(randomNumber < 7) {
         return capsule;
     }
     else {
         return cube;
     }
 }    
 
 function GenerateTri() {
     Instantiate(GenerateShape(), positionTop, Quaternion.identity);
     Instantiate(GenerateShape(), positionLeft, Quaternion.identity);
     Instantiate(GenerateShape(), positionRight, Quaternion.identity);
 }

Answer 1

Best Answer

Answer by Ali-hatem · Mar 16, 2016 at 11:18 AM

as i see you are trying to wait for some time before calling GenerateTri(); but it will work for the first time because Time.deltaTime start from 0.02 & will keep increasing so when Time.deltaTimegeting more than 5 then timeBetweenTris += Time.deltaTime;wil bee 6+0 or 7+0 so timeBetweenTris will bee always >5 .
else if(randomNumber >3 && < 7)

lastly if i understand you want to instantiate a 3 random objects after a delay of time you can use much easier way :

   public GameObject[] objs;//attach objects to this array in inspector.
      void Start () 
         {
             StartCoroutine (GenerateTri());
         }
     IEnumerator GenerateTri()
     {
     Instantiate(objs[Random.Range (0, objs.GetLength (0))], positionTop, Quaternion.identity);
     Instantiate(objs[Random.Range (0, objs.GetLength (0))], positionLeft, Quaternion.identity);
     Instantiate(objs[Random.Range (0, objs.GetLength (0))], positionRight, Quaternion.identity);
     yield return new WaitForSeconds (5f);
     }

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wallebot · Mar 16, 2016 at 07:16 PM 0

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EDIT:

Hi,

thank you so much for your answer. It turned out that the specific issue was related to a Destroy script which was not active - however was unaware that inactive scripts can still influence an object.

Your implementation amounts to one instantiation, however repeating generation was required.

Using an Array is much better thank you.

Calling function every x seconds but objects disappearing instantly

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