public class Zombie : MonoBehaviour
{

    Vector2 TargetPosition;
    Rigidbody2D Rigidbody;
    Player Player;
    Waypoint Waypoint;

    [SerializeField]
    float Speed = 5f;

    [SerializeField]
    float Radius = 0.5f;


    bool RunningToPlayer = false;

	void Start ()
    {
        Player = FindObjectOfType<Player>();
        TargetPosition = transform.position;
        Waypoint = FindObjectOfType<Waypoint>();
        Rigidbody = GetComponent<Rigidbody2D>();
    }


	void FixedUpdate ()
    {
       //jeśli gracz wejdzie w pole widzenia zombie to wtedy zombie zmierza do pozycji gracza
       if(RunningToPlayer == true)
        {
            TargetPosition = Player.transform.position;
        }

        // jesli gracz znajduje sie w zasiegu ataku - zadaj obrazenia
        if (Vector3.Distance(transform.position, TargetPosition) <= GetComponent<Statistics>().AttackRange)
        {
            DoDamage();
        }

        //jesli zombie osiagnac swoj cel, wylosuj kolejny punkt o ktorego ma sie udac
        if (Vector3.Distance(transform.position, TargetPosition) <= Radius)
        {
            TargetPosition = Waypoint.GetRandomWaypoint();
        }
        Movement();
    }

     void Movement()
     {
            var direction = (Vector3)TargetPosition - transform.position;
            var zombieVelocity = direction.normalized * Speed;

            Rigidbody.MovePosition(Rigidbody.position + (Vector2)zombieVelocity * Time.fixedDeltaTime);
            transform.right = (Vector2)direction;
     }

    void DoDamage()
    {
       Player.GetComponent<Statistics>().Health -= GetComponent<Statistics>().AttackDamage;
    }

    private void OnTriggerEnter2D(Collider2D collision)
    {
        RunningToPlayer = true;
        Speed = 3f;
    }
    private void OnTriggerExit2D(Collider2D collision)
    {
        RunningToPlayer = false;
        Speed = 1f;
        TargetPosition = transform.position;

    }
}