using System.Collections;
using System.Collections.Generic;
using UnityEngine;
// ★追加
using TMPro;

public class ScoreManager : MonoBehaviour
{
    private int score = 0;
    private TextMeshProUGUI scoreLabel;

    void Start()
    {
        scoreLabel = GetComponent<TextMeshProUGUI>();
        scoreLabel.text = "" + score;
    }

    // （復習）
    // スコアを増加させるメソッド
    // 外部からアクセスするためpublicをつけること。
    public void AddScore(int amount)
    {
        score += amount;
        scoreLabel.text = "" + score;
    }
}

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

public class DestroyObject : MonoBehaviour
{
    public GameObject effectPrefab;
    public GameObject effectPrefab2;
    public int objectHP;
    public GameObject[] itemPrefabs;

    // ★追加
    public int scoreValue; // 得点数は自由に設定しましょう。
    private ScoreManager sm;

    // ★追加
    private void Start()
    {
        sm = GameObject.Find("ScoreLabel").GetComponent<ScoreManager>();
    }

    private void OnTriggerEnter(Collider other)
    {
        if (other.CompareTag("Shell"))
        {
            objectHP -= 1;

            if (objectHP > 0)
            {
                Destroy(other.gameObject);
                GameObject effect = Instantiate(effectPrefab, other.transform.position, Quaternion.identity);
                Destroy(effect, 2.0f);
            }
            else
            {
                Destroy(other.gameObject);
                GameObject effect2 = Instantiate(effectPrefab2, other.transform.position, Quaternion.identity);
                Destroy(effect2, 2.0f);
                Destroy(this.gameObject);

                // ★追加
                sm.AddScore(scoreValue);

                int itemNumber = Random.Range(0, 100);

                if(itemPrefabs.Length != 0)
                {
                    Vector3 pos = transform.position;

                    if(itemNumber < 10)
                    {
                        Instantiate(itemPrefabs[0], new Vector3(pos.x, pos.y + 0.6f, pos.z), Quaternion.identity);
                    }
                    else if (itemNumber < 40)
                    {
                        Instantiate(itemPrefabs[1], new Vector3(pos.x, pos.y + 0.6f, pos.z), Quaternion.identity);
                    }
                    else
                    {
                        Instantiate(itemPrefabs[2], new Vector3(pos.x, pos.y + 0.6f, pos.z), Quaternion.identity);
                    }
                }
            }
        }
    }
}