using UnityEngine;
using System.Collections;

public class EnemyFireScript : MonoBehaviour {

    public float FireRate = 1f;
    float fireCounter;
    bool PlayerInRange = false;
    bool IsBulletTopDown = true;
    public GameObject Bullet;
    public float BulletSpeed ;


    AudioSource EnemyFireAudio;
    void Start ()
    {
        EnemyFireAudio = GameObject.FindGameObjectWithTag("EnemyFireAudio").GetComponent<AudioSource>();
    }
	
	void Update ()
    {
        fireCounter += Time.deltaTime;        
        
        if (fireCounter >= FireRate && PlayerInRange)
        {
            fireCounter = 0;
            EnemyFireAudio.Play();
            if (IsBulletTopDown)
            {                
                Fire1();
            }
            else
            {                
                Fire2();
            }
            IsBulletTopDown = !IsBulletTopDown;
        }
    }

    void Fire1()
    {
        var Bullet1 = Instantiate(Bullet, gameObject.transform.position, Quaternion.identity) as GameObject;
        Bullet1.GetComponent<Rigidbody2D>().velocity = Vector2.up * BulletSpeed;
        var Bullet2 = Instantiate(Bullet, gameObject.transform.position, Quaternion.identity) as GameObject;
        Bullet2.GetComponent<Rigidbody2D>().velocity = Vector2.right * BulletSpeed;
        var Bullet3 = Instantiate(Bullet, gameObject.transform.position, Quaternion.identity) as GameObject;
        Bullet3.GetComponent<Rigidbody2D>().velocity = Vector2.down * BulletSpeed;
        var Bullet4 = Instantiate(Bullet, gameObject.transform.position, Quaternion.identity) as GameObject;
        Bullet4.GetComponent<Rigidbody2D>().velocity = Vector2.left * BulletSpeed;
        Destroy(Bullet1, 1.5f);
        Destroy(Bullet2, 1.5f);
        Destroy(Bullet3, 1.5f);
        Destroy(Bullet4, 1.5f);        
    }

    void Fire2()
    {
        var Bullet1 = Instantiate(Bullet, gameObject.transform.position, Quaternion.identity) as GameObject;
        Bullet1.GetComponent<Rigidbody2D>().velocity = new Vector2(1,1) * BulletSpeed;
        var Bullet2 = Instantiate(Bullet, gameObject.transform.position, Quaternion.identity) as GameObject;
        Bullet2.GetComponent<Rigidbody2D>().velocity = new Vector2(-1, 1) * BulletSpeed;
        var Bullet3 = Instantiate(Bullet, gameObject.transform.position, Quaternion.identity) as GameObject;
        Bullet3.GetComponent<Rigidbody2D>().velocity = new Vector2(-1, -1) * BulletSpeed;
        var Bullet4 = Instantiate(Bullet, gameObject.transform.position, Quaternion.identity) as GameObject;
        Bullet4.GetComponent<Rigidbody2D>().velocity = new Vector2(1, -1) * BulletSpeed;
        Destroy(Bullet1, 1.5f);
        Destroy(Bullet2, 1.5f);
        Destroy(Bullet3, 1.5f);
        Destroy(Bullet4, 1.5f);
    }

    void OnTriggerEnter2D(Collider2D other)
    {
        var player = other.gameObject.GetComponentInParent<PlayerHealthScript>();
        if (player != null)
        {
            PlayerInRange = true;
        }
    }

    void OnTriggerExit2D(Collider2D other)
    {
        var player = other.gameObject.GetComponentInParent<PlayerHealthScript>();
        if (player != null)
        {
            PlayerInRange = false;
        }
    }

}