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Question by FH_88 · Jan 13, 2015 at 08:03 AM · javascriptrandomtimespawntimer

Random spawn timer

I have a script, which spawns a random amount of gameobjects, at a random place on the screen, at a specific time, I would like this time to be random, so that the objects spawn at a random time, like if it was a random time between (1,5) but I can't seem to figure out how to implement it in to my script, I know it has something to do with random.range, as I have used at another place in the script, but I dont know how to implement it for the timer.

My Script so far.

 var Mines : Transform;
 
 private var Timer : float;
 
 function Awake () {
     Timer = Time.time + 4;
 }
 
 function Update () {
     
     var randNum = Random.Range(0, 3); // this will return a number between 0 and 9 
  
      if (Timer < Time.time) {
      
         for (var i = 0; i < randNum; i++){
         var screenPosition : Vector3 = Camera.main.ScreenToWorldPoint(new Vector3(Random.Range(0,Screen.width), Random.Range(0,Screen.height), Camera.main.farClipPlane/2));
           Instantiate(Mines, screenPosition, Quaternion.identity); 
 
         Timer = Time.time + 4;
         Debug.Log("Spawned Mines");
         
         }
     }
 }
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Answer by HarshadK · Jan 13, 2015 at 08:11 AM

You just needs to add a random value to Time.time to set your Timer variable as below:

 function Awake () {
     // Add a random value of time to the Timer instead of a fixed value of 4
     Timer = Time.time + Random.Range(1,6);
 }
 
 function Update () {
  
     var randNum = Random.Range(0, 3); // this will return a number between 0 and 9 
 
     if (Timer < Time.time) {
       
         for (var i = 0; i < randNum; i++)
         {
             var screenPosition : Vector3 = Camera.main.ScreenToWorldPoint(new Vector3(Random.Range(0,Screen.width), Random.Range(0,Screen.height), Camera.main.farClipPlane/2));
             Instantiate(Mines, screenPosition, Quaternion.identity); 
         }
         
         // Add a random value of time to the Timer instead of a fixed value of 4
         Timer = Time.time + Random.Range(1,6);
         Debug.Log("Spawned Mines");
     }
 }

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avatar image FH_88 · Jan 13, 2015 at 08:31 AM 0
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Thank you very much, it works perfectly. $$anonymous$$ay I ask you, if it is possible to make the random timer, like a variable so that you can change it over time, without having to change the two Timer = Time.time + Random.Range(1,6); lines every time?

avatar image HarshadK · Jan 13, 2015 at 08:53 AM 0
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You can create a function for getting random timer and call it every time you need.

  function Awake () {
      // Add a random value of time to the Timer ins$$anonymous$$d of a fixed value of 4
      GetRandomTimer();
  }
  
  function Update () {
   
      var randNum = Random.Range(0, 3); // this will return a number between 0 and 9 
  
      if (Timer < Time.time) {
        
          for (var i = 0; i < randNum; i++)
          {
              var screenPosition : Vector3 = Camera.main.ScreenToWorldPoint(new Vector3(Random.Range(0,Screen.width), Random.Range(0,Screen.height), Camera.main.farClipPlane/2));
              Instantiate($$anonymous$$ines, screenPosition, Quaternion.identity); 
          }
          
          // Add a random value of time to the Timer ins$$anonymous$$d of a fixed value of 4
          GetRandomTimer();
          Debug.Log("Spawned $$anonymous$$ines");
      }
  }
 
 function GetRandomTimer()
 {
     Timer = Time.time + Random.Range(1,6);
 }

Is this what you are looking for?

avatar image FH_88 · Jan 13, 2015 at 06:30 PM 0
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Yes I think so, it is because I want it so that if a specific boolean = true the random timer will change, to spawn either slower or faster. I will try the script you made, again thank you very much.

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