public class Emitter : MonoBehaviour {

    public GameObject[] waves;
    private int currentWave;

    // Use this for initialization
    /*
    IEnumerator Start ()
    {
        if(waves.Length == 0)
        {
            yield break;
        }

        while(true)
        {
            Debug.Log("コルーチン");
            GameObject wave = (GameObject)Instantiate(waves[currentWave],
                transform.position,
                Quaternion.identity);

            wave.transform.parent = transform;
            while(wave.transform.childCount != 0)
            {
                yield return new WaitForEndOfFrame();
            }
            Destroy(wave);

            if (waves.Length <= ++currentWave)
            {
                currentWave = 0;
            }
        }

    }
*/

    private IEnumerator e()
    {
        if (waves.Length == 0)
        {
            yield break;
        }

        while (true)
        {
            Debug.Log("コルーチン");
            GameObject wave = (GameObject)Instantiate(waves[currentWave],
                transform.position,
                Quaternion.identity);

            wave.transform.parent = transform;
            while (wave.transform.childCount != 0)
            {
                yield return new WaitForEndOfFrame();
            }
            Destroy(wave);

            if (waves.Length <= ++currentWave)
            {
                currentWave = 0;
            }
        }

    }

    private void Start()
    {
        StartCoroutine(e());

    }

    // Update is called once per frame

    void Update () {

    }

}