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

public class Bot : MonoBehaviour
{
    public GameObject target;
    public LayerMask playerLayer;
    public float seeRadius = 20f;
    public float attkRadus = 2f;
    private NavMeshAgent agent;
    private Animator animator;
    private float attackCooldown = 0f;
    private int hp = 100;

    void Start()
    {
        this.agent = this.GetComponent<NavMeshAgent>();
        this.animator = this.GetComponentInChildren<Animator>();
    }

    void Update()
    {
        if (canSeePlayer())
        {
            if (canAttackPlayer()){
                attack();
                agent.isStopped = true;
            }else{
                agent.isStopped = false;
                agent.SetDestination(target.transform.position);
            }
        }

        UpdateAnimator(agent.desiredVelocity);
    }

    private void attack(){
        attackCooldown -= Time.deltaTime;
        if (attackCooldown <= 0f){
            attackCooldown = 3f;
            this.target.GetComponent<Controls>().hp -= 10;
            this.target.GetComponent<Controls>().Damaged();
        }
    }

    private bool canSeePlayer()
    {
        return Physics.CheckSphere(this.transform.position, seeRadius, playerLayer);
    }

    private bool canAttackPlayer(){
        return Physics.CheckSphere(this.transform.position, attkRadus, playerLayer);
    }

    private void UpdateAnimator(Vector3 movement)
    {
        animator.SetFloat("Forward", movement.magnitude, 0.1f, Time.deltaTime);
        if(movement.magnitude >= 1){
            Debug.Log(Mathf.Atan2(movement.x, movement.z));
        }
        animator.SetFloat("Turn", Mathf.Atan2(movement.x, movement.z), 0.1f, Time.deltaTime);
    }

    public void hit(){
        this.hp -= 20;
        agent.isStopped = false;
        agent.SetDestination(target.transform.position);
        if (this.hp <= 0){
            Destroy(this.gameObject);
        }
    }
}