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

public class Enemy : MonoBehaviour
{
    private SpriteRenderer sprite;

    public GameObject hitParticle;
    public GameObject hitBox;

    private Vector3 currentTarget;
    public Transform pointA, pointB;

    public int health;
    public float speed;

    bool canBeDamaged = true;

    private void Start()
    {
        sprite = GetComponentInChildren<SpriteRenderer>();
    }

    private void Update()
    {
        Movement();
    }

    public void Movement()
    {
        if (transform.position == pointA.position)
        {
            currentTarget = pointB.position;
            sprite.flipX = false;
        }

        else if (transform.position == pointB.position)
        {
            currentTarget = pointA.position;
            sprite.flipX = true;
        }

        transform.position = Vector3.MoveTowards(transform.localPosition, currentTarget, speed * Time.deltaTime);
    }

    private void OnCollisionEnter2D(Collision2D other)
    {
        if (other.gameObject.CompareTag("Player"))
        {
            if(canBeDamaged)
            {
                Instantiate(hitParticle,transform.position, transform.rotation);
                health--;
                StartCoroutine(CanBeDamagedRoutine());
                canBeDamaged = false;
            }

            if (health < 1)
            {
                Destroy(this.gameObject);
            }
        }
    }

    IEnumerator CanBeDamagedRoutine()
    {
        yield return new WaitForSeconds(0.6f);
        canBeDamaged = true;
    }
}