public class MoveRightLeft : MonoBehaviour {
	float posX;
	float posY;
	float speed = 0.1f;
	int direction = 1;

	// Use this for initialization
	void Start () {
		posX = transform.position.x;
		posY = transform.position.y;
	}

	// Update is called once per frame
	void Update ()
	{
		transform.position = new Vector3 (posX, posY, 0);
		posX += speed * direction;
//		if (posX > 7f) {
//			direction = -1;
//		} else if (posX < -7f) {
//				direction = 1;
//		}
//
		if (posX > 7f || posX < -7f) {
			direction *= -1;
		}
	}