using System.Collections;
using UnityEngine;

public class Enemy : MonoBehaviour
{
    private int wayPointCount;           //이동경로 개수
    private Transform[ ] wayPoints;       //이동경로 정보 
    private int currentIndex = 0;        //현재 목표지점 인덱스
    private Movement2D movement2D;       // 오브젝트 이동 제어
   
   public void Setup(Transform[] wayPoints)
    {
        movement2D = GetComponent<Movement2D>();

        //적 이동경로 wayPoints 정보 설정
        wayPointCount = wayPoints.Length;
        this.wayPoints = new Transform[wayPointCount];
        this.wayPoints = wayPoints;

        //적 위치 = 첫 wayPoint 설정
        transform.position = wayPoints[currentIndex].position;

        StartCoroutine("OnMove");

    }

    IEnumerator OnMove()
    {
        //다음 이동
        NextMoveTo();

        while  (true)
        {
            transform.Rotate(Vector3.forward * 10);

            if (Vector3.Distance(transform.position, wayPoints[currentIndex].position) < 0.02f * movement2D.MoveSpeed)
            {
                NextMoveTo();
            }


            yield return null;

        }

    }

    void NextMoveTo()
    {   //wayPoints 남아있으면
        if ( currentIndex < wayPointCount -1 )
        {
            transform.position = wayPoints[currentIndex].position;
            currentIndex ++;
            Vector3 direction = (wayPoints[currentIndex].position - transform.position).normalized;
            movement2D.MoveTo(direction);

        }

        //마지막 wayPoints이면
        else
        {
            Destroy(gameObject);
        }
    }


}