using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class PlayerHealth : MonoBehaviour
{
    public GameObject effectPrefab;
    public AudioClip damageSound;
    public AudioClip destroySound;
    public int playerHP;
    private Slider playerHPSlider;
    public GameObject[] playerIcons;
    public int destroyCount = 0;

    private void Start()
    {
        playerHPSlider = GameObject.Find("PlayerHPSlider").GetComponent<Slider>();
        playerHPSlider.maxValue = playerHP;
        playerHPSlider.value = playerHP;
    }

    private void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.CompareTag("EnemyMissile"))
        {
            playerHP -= 1;
            AudioSource.PlayClipAtPoint(damageSound, Camera.main.transform.position);
            playerHPSlider.value = playerHP;
            Destroy(other.gameObject);

            if (playerHP == 0)
            {
                destroyCount += 1;
                UpdatePlayerIcons();

                GameObject effect = Instantiate(effectPrefab, transform.position, Quaternion.identity);
                Destroy(effect, 1.0f);
                AudioSource.PlayClipAtPoint(destroySound, Camera.main.transform.position);
                this.gameObject.SetActive(false);

                // ★★（追加）
                // リトライの命令ブロックを１秒後に呼び出す。
                Invoke("Retry", 1.0f);
            }
        }
    }

    void UpdatePlayerIcons()
    {
        for (int i = 0; i < playerIcons.Length; i++)
        {
            if (destroyCount <= i)
            {
                playerIcons[i].SetActive(true);
            }
            else
            {
                playerIcons[i].SetActive(false);
            }
        }
    }

    // ★★（追加）
    // ゲームリトライに関する命令ブロック
    void Retry()
    {
        this.gameObject.SetActive(true);
        playerHP = 3;  // ここの数字は自分が決めたプレーヤーのHP数にすること。
        playerHPSlider.value = playerHP;
    }
}