class_name AnchorDetector2D
extends Area2D

signal anchor_detached
signal anchor_updated(anchor)

var current_anchor = null setget update_anchor
var candidate_anchor = null

func _ready():
    connect("anchor_updated", GameManager, "on_room_changed")

func update_anchor(new):
    current_anchor = new
    new.room_entered()
    emit_signal("anchor_updated", new)


func _on_AnchorDetector2d_area_entered(area: Anchor2D) -> void:
    area.room_pre_entered() #Для подгрузки комнаты в память
    if current_anchor == null:
        update_anchor(area)
    else:
        candidate_anchor = area


func _on_AnchorDetector2d_area_exited(area: Anchor2D) -> void:
    if candidate_anchor == null:
        current_anchor = null
        emit_signal("anchor_detached")
    else:
        if area == current_anchor:
            update_anchor(candidate_anchor)
            area.room_exited()
        candidate_anchor = null