using UnityEngine;

// 攻撃の的になる最小構成の敵
[RequireComponent(typeof(DamageReceiver))]
public class Enemy : MonoBehaviour
{
    [Tooltip("この敵の体力を表示するゲージ")]
    [SerializeField] private HealthGauge healthGauge;

    private DamageReceiver _damageReceiver;

    private void Awake()
    {
        _damageReceiver =
            GetComponent<DamageReceiver>();
    }

    private void OnEnable()
    {
        _damageReceiver =
            GetComponent<DamageReceiver>();
        _damageReceiver.Damaged += OnDamaged;
        _damageReceiver.Healed += OnHealed;
    }
    private void OnDisable()
    {
        _damageReceiver.Damaged -= OnDamaged;
        _damageReceiver.Healed -= OnHealed;
    }

    private void Update()
    {
        if (_damageReceiver.IsDead)
            Destroy(gameObject);
    }

    private void OnDamaged(int damage, int maxHealth)
    {
        healthGauge.TakeDamage((float)damage / maxHealth);
    }

    private void OnHealed(int heal, int maxHealth)
    {
        healthGauge.Heal((float)heal / maxHealth);
    }
}