UNITY : ENEMY BASIC AI

 Code as seen in the video:

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

public class EnemyAI : MonoBehaviour {

  [SerializeField] Transform player;

  Rigidbody2D enemyRB;

  float moveSpeeed = 1.0f;

  float attackRange = 5.0f;

  void Start () {

    enemyRB = GetComponent<Rigidbody2D>();

  }

 

  // Update is called once per frame

  void Update () {

    float distanceToPlayer = Vector2.Distance(transform.position, player.position);

    if(distanceToPlayer <= attackRange){

      attack();

    }

  }

  void attack(){

    if(player.transform.position.x < transform.position.x){

      transform.localScale = new Vector3(1, 1, 1);

    }else{

      transform.localScale = new Vector3(-1, 1, 1);

    }

    transform.position = Vector2.MoveTowards(transform.position, player.position, moveSpeeed * Time.deltaTime);

  }

}