using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;

public class PlayerHP : MonoBehaviour
{
    private int maxHP = 3;
    private int HP;
    public GameObject effectPrefab;
    public Slider HPSlider;

    void Start()
    {
        HP = maxHP;
        HPSlider.maxValue = HP;
        HPSlider.value = HP;
    }

    void OnTriggerEnter(Collider other)
    {
        if (other.CompareTag("EnemyMissile"))
        {
            HP -= 1;
            HPSlider.value = HP;

            Destroy(other.gameObject);
            GameObject effect = Instantiate(effectPrefab, transform.position, Quaternion.identity);
            Destroy(effect, 1.0f);

            if (HP < 1)
            {
                Destroy(this.gameObject);
                SceneManager.LoadScene("GameOver");
            }
        }
    }

    // ★追加
    // HP回復
    public void AddHP()
    {
        HP += 5;

        if (HP > maxHP)
        {
            HP = maxHP;
        }

        HPSlider.value = HP;
    }
}

using TMPro;
using UnityEngine;
using UnityEngine.UI;

public class ItemManager : MonoBehaviour
{
    public ItemDatabase itemDatabase;
    public Image itemIcon;
    public TextMeshProUGUI itemCountLabel;
    private int num = 0;
    public AudioClip changeSound;
    // ★追加
    private PlayerHP playerHP;
    public AudioClip okSound;
    public AudioClip ngSound;

    void Start()
    {
        itemIcon.sprite = itemDatabase.itemList[num].itemIcon;
        UpdateUI();

        // ★追加
        playerHP = GetComponent<PlayerHP>();
    }

    void Update()
    {
        if (InputManager.isa.Player.ItemChange.triggered)
        {
            AudioSource.PlayClipAtPoint(changeSound, Camera.main.transform.position);

            num = (num + 1) % itemDatabase.itemList.Count;
            itemIcon.sprite = itemDatabase.itemList[num].itemIcon;
            UpdateUI();
        }

        // ★追加
        // アイテムの実行（Pボタン）
        if (InputManager.isa.Player.Item.triggered)
        {
            // アイテムカウントが１以上残っている場合のみアイデムが実行可能
            if (itemDatabase.itemList[num].itemCount > 0)
            {
                AudioSource.PlayClipAtPoint(okSound, Camera.main.transform.position);

                itemDatabase.itemList[num].itemCount -= 1;
                UpdateUI();

                string currentItemName = itemDatabase.itemList[num].itemName;

                if (currentItemName == "HP")
                {
                    playerHP.AddHP();
                }
            }
            else
            {
                // NGサウンド（アイテムの実行不可）
                AudioSource.PlayClipAtPoint(ngSound, Camera.main.transform.position);
            }
        }
    }

    public void UpdateUI()
    {
        itemCountLabel.text = "" + itemDatabase.itemList[num].itemCount;
    }
}