Yield after spawning object

Question

Hey everyone,

I'm making a simple arcade-style collection game where apples fall and the player has to collect them. The apples fall from a random point (an array of empty gameObjects to simulate a tree), and then are supposed to wait a varying amount of seconds before dropping again.

I thought the code below would work, but the yield command seems to cause the method to not run (everything else runs fine). Of course, removing the yield command results in a million spheres spawning everywhere. Any suggestions? The method as I have it is supposed to spawn another apple in a time frame of 1 to 5 seconds, using Random.Range to select the specific pause length.

 function Update () { 
 makeApple();
 yield WaitForSeconds(Random.Range(1, 5));
 }
 
 function makeApple(){
 currentApple = Random.Range(0, apple.Length);
 var newApple : GameObject = GameObject.CreatePrimitive(PrimitiveType.Sphere);
 newApple.transform.position = apple[currentApple].transform.position;
 newApple.AddComponent("Rigidbody");
 }

Answer 1

You cannot use yield WaitForSeconds in the update.

That is your problem. As you call the function in the update no matter what you shuld use a timer instead. See below:

 function Update () { 
 makeApple();
 }
 
 function makeApple(){
 currentApple = Random.Range(0, apple.Length);
 var newApple : GameObject = GameObject.CreatePrimitive(PrimitiveType.Sphere);
 newApple.transform.position = apple[currentApple].transform.position;
 newApple.AddComponent(Rigidbody);
 var wait=Random.Range(1, 5); // Note this is giving 1 to 4. Range excludes the max value when using integers
 yield WaitForSeconds(wait);
 }

This is calling the function 60 or more time per second and each call is waiting but with:

 var timer:float;
 var wait:int;
 function Start(){
   wait = Random.Range(0,5);
 }
 function Update(){
   timer+=Time.deltaTime;
   if(timer>wait){
     makeApple();
     wait = Random.Range(0,5);
     timer = 0;
   }
 }
 
 function makeApple(){
     currentApple = Random.Range(0, apple.Length);
     var newApple : GameObject = GameObject.CreatePrimitive(PrimitiveType.Sphere);
     newApple.transform.position = apple[currentApple].transform.position;
     newApple.AddComponent(Rigidbody);
     var wait=Random.Range(1, 5);
 }

now the function is not called until timer reaches the value

Yield after spawning object

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