extends Node

const SPAWN_COUNT := 3
var thresholds := [0.85, 0.70, 0.55, 0.40, 0.25, 0.10]
var triggered: Array[bool] = [false, false, false, false, false, false]
var enemy_scene: PackedScene = preload("res://scenes/enemy/enemy.tscn")

@onready var portal: StaticBody3D = get_parent()
@onready var health: Node = get_parent().get_node("Health")

func _process(_delta: float) -> void:
  if health.current_health <= 0:
    return
  var ratio: float = health.current_health / health.max_health
  for i in range(thresholds.size()):
    if not triggered[i] and ratio <= thresholds[i]:
      triggered[i] = true
      _spawn_enemies()

func _spawn_enemies() -> void:
  var spawned: Array = []
  for j in range(SPAWN_COUNT):
    var enemy: CharacterBody3D = enemy_scene.instantiate()
    var offset := Vector3(randf_range(-2, 2), 0, randf_range(-2, 2))
    portal.get_parent().add_child(enemy)
    enemy.global_position = portal.global_position + offset
    enemy.spawn_position = portal.global_position
    enemy.portal = portal
    spawned.append(enemy)
  EventBus.portal_spawn.emit(portal, spawned)