extends CharacterBody3D

enum State { IDLE, CHASE, ATTACK, RETURN }

@export var stats: BaseStats

var state: int = State.IDLE
var target: Node3D = null
var spawn_position: Vector3
var portal: Node3D = null
var gravity: float = ProjectSettings.get_setting("physics/3d/default_gravity")

func _ready() -> void:
  spawn_position = global_position
  add_to_group("enemies")
  Stats.register(self, stats)
  EventBus.entity_died.connect(_on_entity_died)

func _exit_tree() -> void:
  Stats.deregister(self)

func _on_entity_died(entity: Node) -> void:
  if entity == self:
    queue_free()

func _physics_process(delta: float) -> void:
  if not is_on_floor():
    velocity.y -= gravity * delta
  move_and_slide()

func _on_detection_area_body_entered(body: Node3D) -> void:
  if body is CharacterBody3D and body.name == "Player":
    EventBus.enemy_detected.emit(self, body)

func _on_detection_area_body_exited(body: Node3D) -> void:
  if body is CharacterBody3D and body.name == "Player":
    EventBus.enemy_lost.emit(self, body)