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

public class BossShield : MonoBehaviour
{
    public AudioClip sound;

    private void OnTriggerEnter(Collider other)
    {
        if(other.TryGetComponent(out Missile missile))
        {
            Destroy(missile.gameObject);
            AudioSource.PlayClipAtPoint(sound, transform.position);
        }
    }
}

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

public class BossCore : MonoBehaviour
{
    public Material[] materials;
    private int num = 0;

    public GameObject beamPrefab;
    public GameObject target;
    public GameObject darkOptionPrefab;

    // ★追加（シールド）
    public GameObject bossShield;

    private void Start()
    {
        StartCoroutine(ChangeColor());

        // ★追加（シールド）
        bossShield.SetActive(false);
    }

    private void Update()
    {
        transform.LookAt(target.transform);
    }

    private IEnumerator ChangeColor()
    {
        while (true)
        {
            yield return new WaitForSeconds(5f);

            num = (num + 1) % materials.Length;
            this.gameObject.GetComponent<MeshRenderer>().material = materials[num];

            // ★追加（シールド）
            if(num==1)
            {
                // シールド展開
                bossShield.SetActive(true);
            }

            if (num == 2)
            {
                // ★追加（シールド）
                // シールド解除
                bossShield.SetActive(false);

                for (int i = 0; i < 4; i++)
                {
                    GameObject darkOption = Instantiate(darkOptionPrefab, transform.position, Quaternion.identity);
                    Rigidbody darkOptionRb = darkOption.GetComponent<Rigidbody>();
                    darkOptionRb.AddForce(new Vector3(Random.Range(-1f, 1f), 0, Random.Range(-1f, 1f)) * 1000);
                    
                    yield return new WaitForSeconds(0.3f);

                    darkOptionRb.velocity = Vector3.zero;
                    Destroy(darkOption, 10.0f);
                }
            }

            if (num == 3)
            {
                for (int i = 0; i < 7; i++)
                {
                    GameObject beam = Instantiate(beamPrefab, transform.position, transform.rotation);
                    Rigidbody beamRb = beam.GetComponent<Rigidbody>();
                    beamRb.AddForce(transform.forward * 1000);
                    Destroy(beam, 3.0f);

                    yield return new WaitForSeconds(0.3f);
                }
            }
        }
    }
}