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Question by henryjoemartin · Jan 20, 2014 at 11:02 PM · spawning-enemies

How to Spawn a Gameobject According to a Timer?

Hi, Im making a game where I want, in the first wave for 10 enemies to spawn (Get activated) as the game starts, and then 20 more after 5 minutes has gone by. I've tried to figure it out, and was unsuccessful. Any help would be awesome! :)

 function Start()
 {
     gameObject.SetActive(false);
 }
  
 function Update () {
  
     if (Time.time > 300)
     {
        gameObject.SetActive(true);
     }
 }

 
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Answer by robertbu · Jan 20, 2014 at 11:23 PM

When you disable a game object, you no longer receive Update() calls. So any solution that uses Update() will fail. One solution is to use a boolean flag rather than disabling the game object. But if you must disable the game object, Invoke() still works with disabled game objects. You can do:

 function Start() {
     Invoke("Reenable", 300);
     gameObject.SetActive(false);
 }
   
 function Reenable() {
     gameObject.SetActive(true);
 }
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avatar image henryjoemartin · Jan 21, 2014 at 03:49 AM 0
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@robertbu Thank you so much! it works perfectly :)

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Answer by Exalia · Jan 20, 2014 at 11:13 PM

This should get the effect you want

 public GameObject spawner
 float timer = 300;
 float time = 0;

 function Start()
 {
  spawner.SetActive(false);
 }

 function Update()
 {
  if(time >= timer)
  {
   spawner.SetActive(true);
  }
  time += Time.deltaTime;
 }

I hope this helps, let me know how you get on

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avatar image henryjoemartin · Jan 21, 2014 at 03:50 AM 0
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I really appreciated the reply, but I figured it out. :) Thanks!

avatar image henryjoemartin · Jan 21, 2014 at 03:51 AM 0
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Thanks for the reply :) It works now.

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