Sleepless Frontline

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

public class Spider : MonoBehaviour
{
    protected float patrolSpeed = 5f;
    private float chaseSpeed = 5f;
    [SerializeField] private float chaseDistance = 10f;
    [SerializeField] private float attackDistance = 3f;

    [SerializeField] private Transform[] waypoints;
    [SerializeField] private float waypointWaitTime = 1f;

    private NavMeshAgent navMeshAgent;
    private Transform playerTransform;
    private float distanceToPlayer;

    private int currentWaypointIndex = 0;
    private bool waitingAtWaypoint = false;
    private float waitTimeRemaining = 0f;

    [SerializeField] protected float attackCooldown = 2f;
    protected float currentCooldown = 0f;
    protected bool hasAttacked = false;

    protected Animator animator;

    protected enum SpiderState { Patrol, Chase, Attack ,Die};
    protected SpiderState currentState;

    [SerializeField] private int SpiderHp;
    private EnemyDetail enemyDetail;
    [SerializeField] public int SpiderDamage;


    private void Start()
    {

        animator = GetComponent<Animator>();
        navMeshAgent = GetComponent<NavMeshAgent>();
        enemyDetail = GetComponent<EnemyDetail>();
        currentState = SpiderState.Patrol;
        waypoints = wpManager.instance.setwaypoint(Random.Range(0,6));
        SetNextWaypoint();

    }

    private void Update()
    {
        if(playerTransform == null)
        {
            playerTransform = GameObject.FindGameObjectWithTag("Player").transform;
        }
        distanceToPlayer = Vector3.Distance(transform.position , playerTransform.position);

        switch( currentState )
        {
            case SpiderState.Patrol:
                navMeshAgent.speed = patrolSpeed;
                break;
            case SpiderState.Chase:
                navMeshAgent.speed = chaseSpeed;
                break;
            case SpiderState.Attack:
                navMeshAgent.speed = 0;
                break;
            case SpiderState.Die: navMeshAgent.speed = 0; break;
        }


        switch( currentState )
        {
            case SpiderState.Patrol:
                if( distanceToPlayer <= chaseDistance )
                {
                    currentState = SpiderState.Chase;
                }
                if( waitingAtWaypoint == false && navMeshAgent.remainingDistance < 0.1f )
                {
                    waitingAtWaypoint = true;
                    waitTimeRemaining = waypointWaitTime;
                }
                if( waitingAtWaypoint == true)
                {
                    animator.SetBool("idle" , true);
                    animator.SetBool("walk" , false);
                    waitTimeRemaining -= Time.deltaTime;
                    if( waitTimeRemaining <= 0f )
                    {
                        waitingAtWaypoint = false;
                        SetNextWaypoint();
                    }
                }
                else
                {
                    animator.SetBool("idle" , false);
                    animator.SetBool("walk" , true);
                    navMeshAgent.SetDestination(waypoints[currentWaypointIndex].position);
                }
                break;
            case SpiderState.Chase:
                if( distanceToPlayer <= attackDistance )
                {
                        currentState = SpiderState.Attack;
                }
                else if( distanceToPlayer > chaseDistance )
                {
                    currentState = SpiderState.Patrol;
                }
                else
                {
                    animator.SetBool("idle" , false);
                    animator.SetBool("walk",true);
                    navMeshAgent.SetDestination(playerTransform.position);
                }
                break;
            case SpiderState.Attack:
                Attack();
                break;
            case SpiderState.Die:
                animator.SetBool("die",true );
                Destroy(gameObject , 2);
                break;
        }
        if( enemyDetail.BossCurHP <= 0)
        {
            currentState = SpiderState.Die;
        }
    }

    private void SetNextWaypoint()
    {
        currentWaypointIndex = (currentWaypointIndex + 1) % waypoints.Length;
        navMeshAgent.SetDestination(waypoints[currentWaypointIndex].position);
    }

    public virtual void Attack()
    {
        if(hasAttacked == false )
        {
            hasAttacked = true;
            animator.SetBool("walk" , false);
            animator.SetTrigger("attack");
            currentCooldown = attackCooldown;
        }
        if(hasAttacked == true)
        {
            currentCooldown -= Time.deltaTime;
        }
        if(currentCooldown < 0) { hasAttacked = false; currentState = SpiderState.Chase; }
    }

    [SerializeField] GameObject damageBox;
    public void DamageBox()
    {
        damageBox.SetActive(!damageBox.activeSelf);
    }
}