How can I get a reference to a specific object generated by spawning?

Questions & Answers
1

Here is my code:
IEnumerator waitSpawner()
{
yield return new WaitForSeconds (startWait);
while (!stop)
{
randEnemy = Random.Range (0, 2);
Vector2 spawnPosition = new Vector2 (0, 6);
Instantiate (enemies[randEnemy], spawnPosition, gameObject.transform.rotation);
yield return new WaitForSeconds (spawnWait);
}
}

2

Instantiate() method is returning an instance of your prefab (enemies[randEnemy]). You can create a List or Dictionary to keep all your current enemies.

Sample as below:

List<EnemyController> currentEnemies = new List<EnemyController>();

	IEnumerator waitSpawner() {
		yield return new WaitForSeconds (startWait);
		while (!stop) {
			randEnemy = Random.Range (0, 2);
			Vector2 spawnPosition = new Vector2 (0, 6);

			GameObject newEnemy = Instantiate(enemies[randEnemy], spawnPosition, gameObject.transform.rotation) as GameObject;
			// Get the enemy controler if any
			EnemyController newEnemyController = newEnemy.GetComponent<EnemyController>();
			currentEnemies.Add(newEnemyController);

			yield return new WaitForSeconds (spawnWait);
		}
	}