IEnumerator instObj ()
{
(1) yield return new WaitForSeconds(1.5f);
(2) Instantiate(obj, new Vector3(Random.Range(-10f, 10f), 0, Random.Range(-10f, 10f)), Quaternion.identity);
}
IEnumerator instObj ()
{
(2)Instantiate(obj, new Vector3(Random.Range(-10f, 10f), 0, Random.Range(-10f, 10f)), Quaternion.identity);
(1) yield return new WaitForSeconds(1.5f);
}