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

public class AIChace : MonoBehaviour
{
    //vareables
    public GameObject Player;
    public string triggeringItemTag = "YourItemTag";
    private float distance;
    private Vector2 direction;
    public int range = 7;
    public float speed;

    //seting vareables to correct components
    private Rigidbody2D body;

    
    /// <summary>
    /// This is to get the riged body of the player at the start of the run
    /// </summary>
    void Start()
    {
        body = GetComponent<Rigidbody2D>();
    }

    /// <summary>
    /// Update is called once per frame and calculates where the enemy is faceing, and the speed that
    /// the enemy is moving at
    /// </summary>
    void Update()
    {
        //calculating the distance between the player and the enemy
        distance = Vector2.Distance(transform.position, Player.transform.position);

        //calculating the diraction that the player should face
        direction = Player.transform.position - transform.position;
        direction.Normalize();
        float angle = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg;

        //checking if the player is within range and if so then moving towards the player
        if (distance < range)
        {
            body.velocity = direction * speed;
            transform.rotation = Quaternion.Euler(Vector3.forward * angle);
        }
        
    }

    /// <summary>
    /// is function first is run every time somthing colides with the enemy, and if it's taged bullet
    /// then distroys it self
    /// </summary>
    /// <param name="collision"></param>
    private void OnCollisionEnter2D(Collision2D collision)
    {
        //checking if the colition is with the object taged bullet, if so then distroying self
        if (collision.gameObject.CompareTag("Bullet"))
        {
            Destroy(gameObject);

        }
    }
}