Поворот спрайта противника в unity2d c#

using UnityEngine;
using System.Collections;
using System.Linq;
using UnityEngine.UI;
 
public class Boss : Monster
{
    [SerializeField]
    private float rate = 2.0F;
    [SerializeField]
    private float speed = 1.0F;
    private Vector3 direction;
    private SpriteRenderer sprite;
    [SerializeField]
    private Color bulletColor = Color.black;
    private Bullet bullet;
    [SerializeField]
    public static int Lives = 20; //количество жизней босса, поменять в pausemenu,gameovermenu,mainmenu
    private GameObject Finish;
    public GameObject boss;
    public static Animator animator;
    public Image bar; // Полоска здоровья
    public float fill;
 
 
    public static BossState Stateboss
    {
        get { return (BossState)animator.GetInteger("Stateboss"); }
        set { animator.SetInteger("Stateboss", (int)value); }
    }
 
    void Awake()
    {
        sprite = GetComponentInChildren<SpriteRenderer>();
        bullet = Resources.Load<Bullet>("Bullet");
        animator = GetComponent<Animator>();
    }
 
    void Start()
    {
        direction = transform.right*-1f;
        InvokeRepeating("Shoot", rate, rate);
        Finish = GameObject.Find("Finish");
        Finish.SetActive(false);
        boss = GameObject.Find("Boss");
        fill = 1f;      
    }
 
    void Update()
    {
        Move();
        if (Lives <= 0)
        {
            BossIsDead();
        }
        fill = Lives/20f;
        bar.fillAmount = fill;
    }
    
    private void Shoot()
    {
        if(direction != transform.right){
        Vector3 position = transform.position;          position.y += -0.5F;
        Bullet newBullet = Instantiate(bullet, position, bullet.transform.rotation) as Bullet;
 
        newBullet.Parent = gameObject;
        newBullet.Direction = -newBullet.transform.right;
        newBullet.Color = bulletColor;
        }
    }
    public override void ReceiveDamage()
    {
        Lives--;
        Debug.Log(Lives);
    }
 
    protected override void OnTriggerEnter2D(Collider2D collider)
    {
        Unit unit = collider.GetComponent<Unit>();  // урон от касания
 
        if (unit && unit is Character)
        {
            if (Mathf.Abs(unit.transform.position.x - transform.position.x) < 0.3F) ReceiveDamage();
            else unit.ReceiveDamage();
        }
        
        Bullet bullet = collider.gameObject.GetComponent<Bullet>(); // урон от пули
        if (bullet && bullet.Parent != gameObject)
        {
            ReceiveDamage();
        }
    }
 
    private void Move()
    {
        Collider2D[] colliders = Physics2D.OverlapCircleAll(transform.position + transform.up * 0.01F + transform.right * direction.x * 1.3F, 0.1F);
 
        if (colliders.Length > 0 && colliders.All(x => !x.GetComponent<Character>())) {direction *= -1.0F; transform.localScale=new Vector2 (-transform.localScale.x, transform.localScale.y);}
        
        transform.position = Vector3.MoveTowards(transform.position, transform.position + direction, speed * Time.deltaTime);
        
        
    }
    void BossIsDead(){
        
        Finish.SetActive(true);
        Stateboss = BossState.bossdead;
        Destroy(boss,1.9F); // исчезновение босса
    }
    
}
public enum BossState
{
    bosswalking,
    bossdead
}