add audio_manager and code refactoring

core/photo_mode/managers/collection_manager.gd

@@ -0,0 +1,60 @@
+extends Node
+
+signal on_collectible_unlocked(collectible_id: String)
+signal on_photo_saved(filePath: String)
+
+var collectibles_library: CollectibleLibrary = preload("res://core/photo_mode/data/collectible_library.tres")
+
+var unlocked_collectibles_ids: Array[String] = []
+var saved_photos: Array[String] = []
+
+func _ready() -> void:
+	load_save_data()
+
+func unlock_collectible(collectible_id: String) -> void:
+	if not collectible_id in unlocked_collectibles_ids:
+		var new_collectible = get_collectible_by_id(collectible_id)
+		if new_collectible:
+			unlocked_collectibles_ids.append(collectible_id)
+			sync_save_data()
+			on_collectible_unlocked.emit(collectible_id)
+
+func get_collectible_by_id(id: String) -> CollectibleResource:
+	for collectible in collectibles_library.collectibles:
+		if collectible.id == id:
+			return collectible
+	return null
+
+func get_all_collectibles() -> Array[CollectibleResource]:
+	return collectibles_library.collectibles
+
+func get_unlocked_collectible_ids() -> Array[String]:
+	return unlocked_collectibles_ids
+
+func save_photo_to_disk_async() -> void:
+	await RenderingServer.frame_post_draw
+	var image = get_viewport().get_texture().get_image()
+	
+	if not DirAccess.dir_exists_absolute("user://photos"):
+		DirAccess.make_dir_absolute("user://photos")
+	
+	var timestamp = str(Time.get_unix_time_from_system())
+	var file_path = "user://photos/photo_" + timestamp + ".png"
+	image.save_png(file_path)
+	
+	saved_photos.append(file_path)
+	sync_save_data()
+	on_photo_saved.emit(file_path)
+
+func sync_save_data() -> void:
+	GameState.save_data.unlocked_collectibles_ids = unlocked_collectibles_ids.duplicate()
+	GameState.save_data.saved_photos = saved_photos.duplicate()
+
+func load_save_data() -> void:
+	unlocked_collectibles_ids = GameState.save_data.unlocked_collectibles_ids.duplicate()
+	saved_photos = GameState.save_data.saved_photos.duplicate()
+
+	if unlocked_collectibles_ids.is_empty() and saved_photos.is_empty():
+		unlocked_collectibles_ids.append("cane")
+
+	sync_save_data()

core/photo_mode/managers/collection_manager.gd.uid

@@ -0,0 +1 @@
+uid://c3kq1qddpm8tf