public Projectile(GameObject projectilePrefab, Transform startPos, Transform parent, Vector3 target, float moveSpeed)
{
gameObject = new GameObject("__projectile", typeof(MovementController));
gameObject.transform.SetParent(parent);
gameObject.transform.SetPositionAndRotation(startPos.position, startPos.rotation);
projectile = Object.Instantiate(projectilePrefab);
movement = gameObject.GetComponent <MovementController>();
movement.moveSpeed = moveSpeed;
movement.AddOnTargetReached(OnTargetReached);
movement.StartMoving(target);
}