Make a prefab continually instantiate for a set period of time?

Unity Engine
1

Hey, continuing off the flying sphere game I talked about in this other topic, I’m now trying to figure out how to make flying spheres (i.e. asteroids) to keep instantiating themselves for a set period of time.

Right now I’ve got it set up so that it instantiates once every second, and then stops after the asteroid has been instantiated 15 times. But I want it to be able to instantiate an infinite number of times, but still only once a second, and stop after a set time limit has been reached. (Though later I may want to adjust it so that it can speed up or slow down the frequency of instantiation as the game progresses).

Here’s the code:

var asteroid : Transform;
var asteroidCount = 15;

function Start ()
{
   for (i = 0; i < asteroidCount; i++)
   {
     Instantiate(asteroid, Random.insideUnitCircle*15, Quaternion.identity);
     yield WaitForSeconds (1);
   }
}
2

use InvokeRepeating

3

Soon there will be a Timer class in eDriven framework.

Timer t = new Timer(5); // every 5 seconds
t.RepeatCount = 10; // stop after 10 times
t.Tick += delegate { Debug.Log("Tick"); };
t.Start();