class_name LobbyDecor
extends Node

@export var refLobby : Lobby;
@export var bg : TextureRect;

@export var logoOffset : int;

@export var mainCamera : Node3D;
@onready var guiTexture : TextureRect = get_node("c_GUITexture");

func _ready():
	var screen_size = get_viewport().get_visible_rect().size
	if Time.get_ticks_msec() > 6000: guiTexture.modulate.a = 0;
	elif bg: _set_pixelinset(bg, Rect2(0, 0, screen_size.x, screen_size.y));

func _process(_delta : float):
	var screen_size = get_viewport().get_visible_rect().size
	var t_elapsed : float = float(Time.get_ticks_msec()) / float(1000);
	
	var width = screen_size.y * .84;
	if width > 600: width -= (width - 600) * .5;
	if width > screen_size.x - 30: width = screen_size.x - 30;
	if t_elapsed > 1.5 && \
		!mainCamera.get_node("c_Audio Source").playing && \
		PlayerPrefs.GetInt("useMusic", 1) != 0:
		
		mainCamera.get_node("c_Audio Source").playing = true;
	
	if t_elapsed < 5:
		bg.modulate.a = 1.4 - (t_elapsed / 4);
		if t_elapsed < 2.5:
			guiTexture.modulate.a = lerpf(0, 1.2, t_elapsed * (1 / 2.5));
			_set_pixelinset(guiTexture, Rect2(
				screen_size.x / 2 - width / 2,
				screen_size.y / 2 - width / 4,
				width,
				width / 2));
		if t_elapsed > 4.25:
			_set_pixelinset(guiTexture, Rect2(
				screen_size.x / 2 - width / 2,
				_easeOutExpo(
					t_elapsed - 4.25,
					screen_size.y / 2 - width / 4,
					screen_size.y - (width / 2),
					.75),
				width,
				width / 2));
	elif t_elapsed > 6:
		if bg: bg.queue_free();
		guiTexture.modulate.a = lerpf(guiTexture.modulate.a, refLobby.GUIAlpha - .2, _delta * 4);
		_set_pixelinset(guiTexture, Rect2(
			screen_size.x / 2 - width / 2,
			screen_size.y - (width / 2),
			width,
			width / 2));
	
	logoOffset = width / 2;

## time, begin, change, duration
func _easeOutExpo(t, b, c, d):
	c = c - b;
	return c * (-pow(2, -10 * t/d) + 1) + b;

func _easeInOutExpo(t, b, c, d):
	c = c - b;
	if t < d/2: return 2*c*t*t/(d*d) + b;
	var ts = t - d/2;
	return -2*c*ts*ts/(d*d) + 2*c*ts/d + c/2 + b;

func _set_pixelinset(trect : TextureRect, rect : Rect2):
	var screen_size = get_viewport().get_visible_rect().size;
	trect.position.x = rect.position.x;
	trect.position.y = screen_size.y - (rect.position.y + rect.size.y);
	trect.size.x = rect.size.x;
	trect.size.y = rect.size.y;