延續昨天的敵人AI製作，今天要做敵人追蹤玩家位置並朝玩家靠近的功能

實作

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

public class EnemyControl : MonoBehaviour
{
    public enum EnemyBehavior {patrol,battle};
    public EnemyBehavior EnemyNow;
    //戰鬥狀態
    public enum Battle { follow, attack, dodge };
    public Battle BatChoose;
    //確認面對的方向
    public enum checkface { Lelf,Right};
    public checkface face;
    
    public float move;
    public float speed;
    private bool LookForP;
    private float SwichCheck;
    private Transform mytransform;
    private Transform playertransform;
    private SpriteRenderer spr;
    private Rigidbody2D rig;
    
    void Start()
    {
        EnemyBehavior = Status.patrol;
        spr = this.transform.GetComponent<SpriteRenderer>();
        spr = this.transform.GetComponent<SpriteRenderer>();
        //面對的方向
        if (spr.flipX )
        {
            face = checkface.Right;
        }
        else {
            face = checkface.Lelf;
        }
        mytransform = this.transform;
        if (GameObject.Find("player") != null)
        {
            playertransform = GameObject.Find("player").transform;
        }
        if (!LookForP && playertransform)
        {
            StartCoroutine(DoCheck());
        }
    }
    private void FixedUpdate() ...
}

  private void FixedUpdate()
    {
        //敵人狀態

        switch (EnemyNow) 
        {
            case EnemyBehavior.patrol:
                if (playertransform)
                {
                //巡邏
                    Domove();
                }
                break;
            case EnemyBehavior.battle:
                switch (BatChoose)
                {
                    case Battle.follow:
                        followPlayer();
                        break;
                    case Battle.attack:

                        break;
                }
                break;
        }
    }

void followPlayer()
    {
        if (playertransform)
        {
            if (mytransform.position.x >= playertransform.position.x)
            {
                spr.flipX = false;
                face = checkface.Lelf;
            }
            else
            {
                spr.flipX = true;
                face = checkface.Right;
            }
            switch (face)
            {
                case checkface.Lelf:
                    if(Mathf.Abs(mytransform.position.x - playertransform.position.x) >= 4f)
                        mytransform.position -= new Vector3(speed * Time.deltaTime, 0, 0);
                    break;
                case checkface.Right:
                    if(Mathf.Abs(mytransform.position.x - playertransform.position.x) >= 4f)
                        mytransform.position += new Vector3(speed * Time.deltaTime, 0, 0);
                    break;
            }
        }
        else
        {
            BatChoose = Battle.attack;
        }
    }

待更

協程Coroutine的用法我還不是很熟練所以巡邏移動時有BUG，之後研究完把code修好再更新

參考資料:
https://www.youtube.com/watch?v=pQ9Fabgvusk&t=6s