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

public class Enemy : MonoBehaviour
{
    public Transform pointA = null, pointB = null;
    public float speed = 3.0f;
    bool _switch = false;
    public bool canPatrol = false;

    public PlayerController player;
    public int damage = 1;
    public int awardPoints = 1;

    public AudioClip explosionClip;
    AudioSource audioSource;
    void Start()
    {
        player = GameObject.Find("Player").GetComponent<PlayerController>();
        audioSource = GameObject.Find("ExplosionSound").GetComponent<AudioSource>();
        audioSource.clip = explosionClip;
    }
    void Update()
    {
        if (canPatrol)
        {
            if (!_switch)
            {
                transform.position = Vector3.MoveTowards(transform.position, pointA.position, speed * Time.deltaTime);
            }

            if (_switch)
            {
                transform.position = Vector3.MoveTowards(transform.position, pointB.position, speed * Time.deltaTime);
            }

            if (transform.position == pointA.position)
            {
                _switch = true;
            }
            if (transform.position == pointB.position)
            {
                _switch = false;
            }
        }
        else
        {
            transform.Translate(transform.TransformDirection(transform.forward) * speed * Time.deltaTime);
            Destroy(gameObject, 5.0f);
        }

    }

    private void OnCollisionEnter(Collision collision)
    {
        if(collision.gameObject.tag == "Player")
        {
            player.LoseHealth(damage);
        }
    }

    private void OnTriggerEnter(Collider other)
    {
        if(other.gameObject.tag == "Bullet")
        {
            _audioSource.Play();
            player.AddPoints(awardPoints);
            Destroy(other.gameObject);
            Destroy(this.gameObject);

        }
    }
}