extends Node

const ATTACK_RANGE := 2.0
const ATTACK_COOLDOWN := 1.5
const ATTACK_DAMAGE := 5.0

var attack_timer := 0.0

@onready var enemy: CharacterBody3D = get_parent()

func _physics_process(delta: float) -> void:
  attack_timer -= delta
  if enemy.state != enemy.State.ATTACK:
    return
  if not is_instance_valid(enemy.target):
    enemy.state = enemy.State.RETURN
    return
  var dist := enemy.global_position.distance_to(enemy.target.global_position)
  if dist > ATTACK_RANGE:
    enemy.state = enemy.State.CHASE
    return
  if attack_timer <= 0:
    attack_timer = ATTACK_COOLDOWN
    EventBus.damage_requested.emit(enemy, enemy.target, ATTACK_DAMAGE)
  enemy.velocity.x = 0
  enemy.velocity.z = 0