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

public class Ninja : MonoBehaviour {

    public float range;
    public float speed;
    public NavMeshAgent nav;
    float timer = 0;
    public float attackSpeed;

    public GameObject projectile;
    public GameObject spawner;

    GameObject target;
    public GameObject blood;


    void Start () {
        nav.speed = Random.Range (1f, 2f);
        GameObject[] cowboys = GameObject.FindGameObjectsWithTag("cowboy");
        float minDist = Mathf.Infinity;
        foreach (GameObject cowboy in cowboys) {
            float dist = Vector3.Distance (this.transform.position, cowboy.transform.position);
            if (dist < minDist){
                target = cowboy;
                minDist = dist;
            }
        }
    }

    // Update is called once per frame
    void Update () {
        if (target != null){
            timer -= Time.deltaTime;
            if (Vector3.Distance (this.transform.position, target.transform.position) > range) {
                nav.destination = target.transform.position;
            } else {
                Vector3 relPos = target.transform.position - this.transform.position;
                this.transform.rotation = Quaternion.LookRotation (relPos);

                nav.destination = this.transform.position;
                if (timer <= 0){
                    Attack ();
                    timer = attackSpeed;
                }
            }
        }
    }

    void OnCollisionEnter(Collision obj){
        if (obj.transform.tag == "bullet"){
            Death ();
        }

    }

    void Death(){
        Instantiate (blood, this.transform.position, this.transform.rotation);
        GameObject.Find ("Manager").GetComponent<Manager> ().CashIn (10);
        Destroy (this.gameObject);
    }

    void Attack(){
        GameObject star = Instantiate (projectile,spawner.transform.position, this.transform.rotation);
        star.GetComponent<Projectile>().target = target.transform.position;

    }
}