using UnityEngine;
using System.Collections;

public class EnemyAttack_1 : MonoBehaviour
{
    public GameObject enemyShellPrefab;
    public AudioClip shotSound;
    private SphereCollider sCollider;

    public float shotSpeed;
    public int attackNum;
    public float attackInterval;
    public float serachArea;

    private void Start()
    {
        sCollider = GetComponent<SphereCollider>();
        sCollider.radius = serachArea;
        sCollider.isTrigger = true;
    }

    private void OnTriggerEnter(Collider other)
    {
        // ★改良
        // 「|| other.gameObject.name == "SupplyCar"」のコードを追加
        if (other.gameObject.name == "Tank" || other.gameObject.name == "SupplyCar")
        {
            transform.root.LookAt(other.transform);

            StartCoroutine(Attack());
        }
    }

    private IEnumerator Attack()
    {
        for (int i = 0; i < attackNum; i++)
        {
            GameObject enemyShell = Instantiate(enemyShellPrefab, transform.position, Quaternion.identity);
            Rigidbody enemyShellRb = enemyShell.GetComponent<Rigidbody>();
            enemyShellRb.useGravity = false;
            enemyShellRb.AddForce(transform.forward * shotSpeed);
            AudioSource.PlayClipAtPoint(shotSound, transform.position);

            Destroy(enemyShell, 5.0f);

            yield return new WaitForSeconds(attackInterval);
        }
    }
}

using UnityEngine;

public class GameManager_3 : MonoBehaviour
{
    public GameObject clearCanvas;
    public AudioClip clearSound;

    private void OnCollisionEnter(Collision collision)
    {
        if (collision.gameObject.name == "SupplyCar")
        {
            clearCanvas.SetActive(true);
            AudioSource.PlayClipAtPoint(clearSound, Camera.main.transform.position);
        }
    }
}