extends Node

signal continue_game
signal new_game
signal quit_game

var _current_scene: Node


func _ready() -> void:
    _show_main_menu()


func _show_main_menu() -> void:
    if _current_scene != null:
        _current_scene.queue_free()
    
    var scene : Node = load("res://menu/main_menu.tscn").instantiate()
    add_child(scene)
    scene.continue_game.connect(_continue_game)
    scene.new_game.connect(_new_game)
    scene.show_options.connect(_show_options)
    scene.quit_game.connect(_quit_game)
    _current_scene = scene
    

func _continue_game() -> void:
    continue_game.emit()
    

func _new_game() -> void:
    new_game.emit()
    
    
func _quit_game() -> void:
    quit_game.emit()
    

func _show_options() -> void:
    if _current_scene != null:
        _current_scene.queue_free()
    
    var scene : Node = load("res://menu/options.tscn").instantiate()
    add_child(scene)
    scene.show_main_menu.connect(_show_main_menu)
    scene.show_credits.connect(_show_credits)
    _current_scene = scene


func _show_credits() -> void:
    if _current_scene != null:
        _current_scene.queue_free()
    
    var scene : Node = load("res://menu/credits.tscn").instantiate()
    add_child(scene)
    scene.show_main_menu.connect(_show_main_menu)
    _current_scene = scene