AiController

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

public class AIController : MonoBehaviour
{
    public AIController instance;
    public float chaseDis = 5f;
    float timeSinceLastSawPlayer = Mathf.Infinity;
    float waypointArriveTime = Mathf.Infinity;
    float susTime = 3f;
   public float waypointTollerance = 1f;
   public float dwellTime = 3f;

    int currentwaypointIndex = 0;

   public PatrolPath patrolPath;
    Health health;
    Fighter fighter;
    Mover mover;

    public GameObject player;

    Vector3 guardPos;



    private void Start()
    {
        instance = this;
        health = GetComponent<Health>();
        fighter = GetComponent<Fighter>();
        player = GameObject.FindWithTag("Player");
        mover = GetComponent<Mover>();
        guardPos = transform.position;
    }


    private void Update()
    {
        if (health.isDead) return;
        if (InAttackRange())
        {

            AttackBehavior();
        }
        else if (timeSinceLastSawPlayer < susTime)
        {
            SusBehavior();
        }
        else
        {
            PatrolBehavior();
        }
        UpdateTimers();
    }

    private void UpdateTimers()
    {
        timeSinceLastSawPlayer += Time.deltaTime;
        waypointArriveTime += Time.deltaTime;
    }

    private void PatrolBehavior()
    {
        Vector3 nextPos = guardPos;

        if(patrolPath != null)
        {
            if(AtWaypoint())
            {
                waypointArriveTime = 0;
                CycleWaypoint();
            }
            nextPos = GetCurrentWaypoint();
        }
        if(waypointArriveTime > dwellTime)
        {
            mover.StartMoveAction(nextPos);
        }

    }

    private void AttackBehavior()
    {
        timeSinceLastSawPlayer = 0;
        fighter.Attack(player);
    }

    private void SusBehavior()
    {

    }

    private bool AtWaypoint()
    {
        float disToWaypoint = Vector3.Distance(transform.position, GetCurrentWaypoint());
        return disToWaypoint < waypointTollerance;
    }

    private Vector3 GetCurrentWaypoint()
    {
        return patrolPath.GetWayPoint(currentwaypointIndex);
    }

    private void CycleWaypoint()
    {
        currentwaypointIndex = patrolPath.GetNextIndex(currentwaypointIndex);
    }
    private bool InAttackRange()
    {
        float distoPlayer = Vector3.Distance(player.transform.position, transform.position);
        return distoPlayer < chaseDis;
    }

    private void OnDrawGizmosSelected()
    {
        Gizmos.color = Color.red;
        Gizmos.DrawWireSphere(transform.position, chaseDis);
    }

}