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

public class Enemy : MonoBehaviour {

	public Vector3 targetPos;

	public Level_Manager levelManager;
	public static int enemyDeadCount;

	public float speed;
	public float moveSpeed;
	public float Pause;

	public int Health;
	public int Kamikaze;

	private GameObject bunker;
	private Transform targetTransform;
	private bool enemy;

	void Start () {
		Target();
		LookAt();
		levelManager = GameObject.FindObjectOfType<Level_Manager>();
	}

	void Update () {
		LookAt();
		Pause -= Time.deltaTime;
		if (Health <= 0) {
			enemyDeadCount++;
			if(enemyDeadCount >= 100){
				SimulateWin();
				Debug.Log("Kills Reached");
			}
			Destroy(gameObject);
		}
		//Debug.Log("EnemyDead" + (enemyDeadCount));
    }

    void LookAt () {
		Vector3 vectorToTarget = targetTransform.position - transform.position;
		float angle = Mathf.Atan2(vectorToTarget.y, vectorToTarget.x) * Mathf.Rad2Deg;
		Quaternion q = Quaternion.AngleAxis(angle, Vector3.forward);
		transform.rotation = Quaternion.Slerp(transform.rotation, q, Time.deltaTime * speed);
		transform.position = Vector3.MoveTowards (transform.position, 
     	targetPos, moveSpeed * Time.deltaTime);
    }

    void Target () {
		bunker = GameObject.Find("Bunker");
		targetTransform = bunker.transform;
    }

	void OnTriggerEnter2D(Collider2D collision) {
    	if (collision.gameObject.tag == "Deflector") {
			gameObject.GetComponent<Enemy>().Health = 
				gameObject.GetComponent<Enemy>().Health - 1000;
    	} else if (collision.gameObject.tag == "Bunker") {
			Bunker.Health = Bunker.Health - Kamikaze;
			Destroy(gameObject);
    	}
    }

	void SimulateWin () {
		levelManager.LoadNextLevel();
	}

}