AsteroidSpawner.CreateAsteroids C# (CSharp) Method

    IEnumerator CreateAsteroids()
    {
        // Loop forever
        while (true) {

            // Work out when the next asteroid should appear
            float nextSpawnTime = spawnRate + Random.Range(-variance, variance);

            // Wait that much time
            yield return new WaitForSeconds(nextSpawnTime);

            // Additionally, wait until physics is about to update
            yield return new WaitForFixedUpdate();

            // Create the asteroid
            CreateNewAsteroid();
        }
    }