How to Spawn Arrows

Archer.cs

IEnumerator SpawnArrows()
{
	yield return new WaitForSeconds(startWait);
	while (true)
	{
		for (int i = 0; i < arrowCount; i++) {
			if (!isStunned) {
				// is archer facing right?
				bool facingRight = ((int) _transform.rotation.eulerAngles.y) == 0;
				// calculate origin of arrow (0.5 pixels to left or right of archer)
				float xPosition = _transform.position.x + (facingRight ? 0.5f : -0.5f);
				Vector3 spawnPosition = new Vector2(xPosition, _transform.position.y - 0.2f);
				// create arrow from prefab
				Transform a = (Transform) Instantiate(arrow, spawnPosition, Quaternion.identity);
				// set direction of arrow (right or left)
				a.localScale *= (facingRight) ? -1 : 1;
				Vector2 velocity = new Vector2(facingRight ? 5 : -5, 0);
				// set speed of arrow
				a.GetComponent<Rigidbody2D>().velocity = velocity;
				// destroy arrow after some time has passed
				Destroy(a.gameObject, destroyAfter);
				yield return new WaitForSeconds(spawnWait);
			}
		}
		yield return new WaitForSeconds(reloadWait);
	}
}