Bullet

using UniRx;
using UnityEngine;

public class Bullet : MonoBehaviour
{
    [SerializeField] private float _speed = 10f;

    private Damager _damager;

    private Vector2 _direction;
    private Rigidbody2D _rigidbody;

    private void Awake()
    {
        _rigidbody = GetComponent<Rigidbody2D>();
        _damager = GetComponent<Damager>();
        name = $"Bullet_{GetInstanceID()}";
    }

    public void Setup(Vector2 direction, GameObject owner, int damage, Subject<GameObject> OnKill)
    {
        _direction = new Vector2(direction.x, 0);

        transform.rotation = Quaternion.Euler(0, 0, direction.x > 0 ? -90 : 90);

        _damager.Owner = owner;
        _damager.Damage = damage;

        _damager
            .OnFinalDamage
            .TakeUntilDisable(this)
            .Subscribe(health =>
            {
                OnKill.OnNext(health.Owner);
            });
    }


    private void Update()
    {
        _rigidbody.velocity = _direction * (_speed * Time.deltaTime);
    }
}