i-school

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using DG.Tweening;

public class EnemyMove : MonoBehaviour
{
    [SerializeField]
    private float moveTime = 5.0f;

    private Rigidbody rb;
    private Animator anim;
    private float stateTime = 2.0f;
    private Tween tween;
    private string speedParam = "Speed";


    void Start() {
        if(!transform.parent.TryGetComponent(out anim)) {
            Debug.Log("¿Æ¥ª¥Ö¥¸¥§¥¯¥È¤Î Animator ¤¬¼èÆÀ¤Ç¤­¤Þ¤»¤ó");
        }

        if (TryGetComponent(out rb)) {
            SetDestination();
        } else {
            Debug.Log("Rigidbody ¤¬¼èÆÀ¤Ç¤­¤Þ¤»¤ó");
        }
    }

    /// <summary>
    /// ÌÜɸÃÏÅÀ¤ÎÀßÄê
    /// </summary>
    private void SetDestination() {
        // ¥é¥ó¥À¥à¤ÊºÂɸ¤òÀßÄê
        Vector3 destination = new (transform.position.x + Random.Range(-5.0f, 5.0f), transform.position.y, transform.position.z + Random.Range(-5.0f, 5.0f));
        
        Move(destination);
    }

    /// <summary>
    /// °ÜÆ°
    /// </summary>
    private void Move(Vector3 destination) {
        tween = rb.DOMove(destination, moveTime).SetEase(Ease.InQuart).OnComplete(() => StartCoroutine(Wait()));

        transform.parent.DOLookAt(destination, 1.0f).SetEase(Ease.Linear);

        if (anim) {
            anim.SetFloat(speedParam, destination.normalized.sqrMagnitude);
            //Debug.Log(destination.normalized.sqrMagnitude);
        }
    }

    /// <summary>
    /// ÂÔµ¡
    /// </summary>
    /// <returns></returns>
    private IEnumerator Wait() {
        if (anim) {
            anim.SetFloat(speedParam, 0.0f);
        }

        tween.Kill();
        tween = null;

        // ¤½¤Î¾ì¤ÇÂÔµ¡
        yield return new WaitForSeconds(stateTime);

        // ÌÜɸÃÏÅÀ¤ÎÀßÄê
        SetDestination();
    }
}