extends Node

# globals, for the game
var reading_speed = 1.0

var game_started = false setget _on_game_started_set

var current_registry

# music related
onready var music_player = get_node("music_player")
onready var sfx_player = get_node("sfx_player")

var master_vol setget _on_set_master_vol
var music_vol setget _on_set_music_vol
var sfx_vol setget _on_set_sfx_vol

# transition node
onready var transition = get_node("trans_layer/transition")

signal on_music_volume_changed(new_value)
signal on_sfx_volume_changed(new_value)
signal on_reading_speed_changed(new_value)

signal on_settings_enter()
signal on_settings_exit()

# voices for characters
const brain_voice = null
const arborator_voice = null

const DEFAULT_CHARS_PER_SECOND = 32

const Characters = {
	BRAIN = {
		name = "~brain~",
		name_colour = Color(1, 1, 1, 1),
		voice = brain_voice,
		talking_speed = 1.0,
	},
	ARBORATOR = {
		name = "arborator",
		name_colour = Color(1, 1, 1, 1),
		voice = arborator_voice,
		talking_speed = 1.0,
	}
}

const Scenes = {
	
	# MENUS
	MAIN_MENU = "res://menus/main_menu.tscn",
	OPTIONS_MENU = "res://menus/options_menu.tscn",
	
	# GAME
	INTRO = "res://scenes/intro.tscn",
	FIRST_SCENE = "res://scenes/first_scene.tscn"
	
}

const Themes = {}

const Images = {
	INTRO_BG = "res://img/intro_bg.png"
}

func _register_functions():
	
	# default VN.. functions
	current_registry["SWITCH_SCENE"] = funcref(self, "_switch_scene_fnc")
	current_registry["SET_BACKGROUND"] = funcref(self, "_set_background_fnc")
	

func _set_background_fnc(args):
	if args.size() == 1:
		var bg_name = args[0]
		var bg_texture = load(Images[bg_name])
		SceneSwitcher.current_scene.set_background(bg_texture)

func _switch_scene_fnc(args):
	if args.size() == 1:
		var scene_name = args[0]
		var scene_path = Scenes[scene_name]
		switch_scene_to(scene_path)

func _on_game_started_set(v):
	if v and not game_started:
		print("STARTO")
		_on_game_start()
	game_started = v

func _on_set_master_vol(v):
	pass

func _on_set_music_vol(v):
	pass

func _on_set_sfx_vol(v):
	pass

func _on_game_start():

	# all game state here
	current_registry = {}
	print("YAH")
	# register all de stuff
	_register_functions()
	

# public interface sorta
func switch_scene_to(scene_path, fade = true):
	
	if fade:
		transition.start_transition()
		yield(transition, "on_transition_time")
		
	SceneSwitcher.goto_scene(scene_path)
	
	if fade:
		yield(transition, "on_transition_completed")
		if SceneSwitcher.current_scene.has_method("on_scene_start"):
			SceneSwitcher.current_scene.on_scene_start()
	

func _ready():
	pass