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

public class SetBot : MonoBehaviour
{
    private GameObject target;

    public GameObject[] myBotsPrefab;
    private int num = 0;
    public AudioClip selectSound;

    public AudioClip NGSound;
    public Material NGMark;

    public GameObject[] botIcons;

    private int[] botCounts = new int[6];

    public TextMeshProUGUI[] botCountLabels;

    private void Start()
    {
        for (int i = 0; i < botIcons.Length; i++)
        {
            if (i == num)
            {
                botIcons[i].SetActive(true);
            }
            else
            {
                botIcons[i].SetActive(false);
            }
        }

        botCounts[0] = 2; // MyBot_A
        botCounts[1] = 2; // MyBot_B
        botCounts[2] = 2; // MyBot_C
        botCounts[3] = 2; // MyBot_D
        botCounts[4] = 2; // MyBot_E
        botCounts[5] = 2; // MyBot_F

        for (int i = 0; i < botCountLabels.Length; i++)
        {
            botCountLabels[i].text = "" + botCounts[i];
        }
    }

    void Update()
    {
        if (Time.timeScale != 1)
        {
            return;
        }

        if (Input.GetKeyDown(KeyCode.Mouse1))
        {
            num = (num + 1) % myBotsPrefab.Length;
            AudioSource.PlayClipAtPoint(selectSound, Camera.main.transform.position);

            for (int i = 0; i < botIcons.Length; i++)
            {
                if (i == num)
                {
                    botIcons[i].SetActive(true);
                }
                else
                {
                    botIcons[i].SetActive(false);
                }
            }
        }

        RaycastHit hit;
        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);

        if (Physics.Raycast(ray, out hit))
        {
            target = hit.collider.gameObject;

            if (Input.GetKeyDown(KeyCode.Mouse0))
            {
                if (target.tag == "Block")
                {
                    if (botCounts[num] < 1)
                    {
                        AudioSource.PlayClipAtPoint(NGSound, Camera.main.transform.position);
                        return;
                    }

                    GameObject bot = Instantiate(myBotsPrefab[num], target.transform.position, Quaternion.identity);

                    target.tag = "NG";
                    target.GetComponent<MeshRenderer>().material = NGMark;

                    botCounts[num] -= 1;
                    botCountLabels[num].text = "" + botCounts[num];
                }
                else
                {
                    AudioSource.PlayClipAtPoint(NGSound, Camera.main.transform.position);
                }
            }
        }
    }

    // ★追加
    // 残機数を増加させるメソッド（外部からアクセスできるようにする）
    public void AddBotCount(int num)
    {
        botCounts[num] += 1;
        botCountLabels[num].text = "" + botCounts[num];
    }
}
C#

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

public class ShopManager : MonoBehaviour
{
    private int[] enemyCount = new int[4];
    public TextMeshProUGUI[] enemyLabel;

    // ★追加
    private AudioSource audioS;
    public AudioClip buySound;
    public AudioClip NGSound;

    void Start()
    {
        enemyLabel[0].text = "" + enemyCount[0];
        enemyLabel[1].text = "" + enemyCount[1];
        enemyLabel[2].text = "" + enemyCount[2];
        enemyLabel[3].text = "" + enemyCount[3];

        // ★追加
        audioS = GetComponent<AudioSource>();
    }

    public void AddEnemyCount(int num)
    {
        enemyCount[num] += 1;
        enemyLabel[num].text = "" + enemyCount[num];
    }

    // ★追加
    public void BuyMyBot(int botNum, int priceA, int priceB, int priceC, int priceD)
    {
        // 購入条件の設定（ポイント）
        if (enemyCount[0] >= priceA && enemyCount[1] >= priceB && enemyCount[2] >= priceC && enemyCount[3] >= priceD)
        {
            GameObject.Find("SetBot").GetComponent<SetBot>().AddBotCount(botNum);

            // MyBotの購入に必要分だけ破壊カウントを減少させる（＝カウントの消費）
            enemyCount[0] -= priceA;
            enemyCount[1] -= priceB;
            enemyCount[2] -= priceC;
            enemyCount[3] -= priceD;

            // 破壊カウント数の表示の更新
            enemyLabel[0].text = "" + enemyCount[0];
            enemyLabel[1].text = "" + enemyCount[1];
            enemyLabel[2].text = "" + enemyCount[2];
            enemyLabel[3].text = "" + enemyCount[3];

            // 購入サウンド
            audioS.clip = buySound;
            audioS.Play();
        }
        else
        {
            // 条件に合致しない場合（破壊カウントが不足している場合）
            // NGサウンド
            audioS.clip = NGSound;
            audioS.Play();
        }
    }
}
C#

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

public class BuyButton_A : MonoBehaviour
{
    public void OnBuyButtonClicked()
    {
        GameObject.Find("ShopManager").GetComponent<ShopManager>().BuyMyBot(0, 2, 0, 0, 0); // ここの数字が何を表しているか確認すること 
    }
}
C#