private IEnumerator CreateEnemy(string enemyName, int number)
{
//the first wave enemy
for (int i = 0; i < number; i++)
{
EnemySpawnManager._instance.enemyList.Add(enemySpawn.EnemyBorn(enemyName));
yield return(new WaitForSeconds(1f));
}
while (EnemySpawnManager._instance.enemyList.Count > 0)
{
yield return(new WaitForSeconds(0.2f));
}
}