add ai, photo_mode and radio

core/game_state/game_state.gd

@@ -0,0 +1,32 @@
+extends Node
+
+const SAVE_PATH: String = "user://savegame.json"
+
+var save_data: SaveGameData = SaveGameData.new()
+var is_loaded: bool = false
+
+func _ready() -> void:
+	load_game()
+
+func save_game() -> void:
+	var save_file = FileAccess.open(SAVE_PATH, FileAccess.WRITE)
+	var json_string = JSON.stringify(save_data.to_dictionary())
+	save_file.store_line(json_string)
+
+func load_game() -> void:
+	if not FileAccess.file_exists(SAVE_PATH):
+		save_data = SaveGameData.new()
+		is_loaded = true
+		return
+		
+	var file = FileAccess.open(SAVE_PATH, FileAccess.READ)
+	var json_string = file.get_as_text()
+	
+	var json = JSON.new()
+	var parse_result = json.parse(json_string)
+	
+	save_data = SaveGameData.new()
+	if parse_result == OK and json.data is Dictionary:
+		save_data = SaveGameData.from_dictionary(json.data)
+	
+	is_loaded = true

core/game_state/game_state.gd.uid

@@ -0,0 +1 @@
+uid://b17g2w2g101o6

core/game_state/save_game_data.gd

@@ -0,0 +1,34 @@
+class_name SaveGameData
+extends Resource
+
+var unlocked_collectibles_ids: Array[StringName] = []
+var saved_photos: Array[String] = []
+var audio_bus_volumes: Dictionary[String, float] = {}
+
+func to_dictionary() -> Dictionary:
+	var serialized_collectible_ids: Array[String] = []
+	for collectible_id in unlocked_collectibles_ids:
+		serialized_collectible_ids.append(str(collectible_id))
+
+	return {
+		"unlocked_collectibles_ids": serialized_collectible_ids,
+		"saved_photos": saved_photos,
+		"audio_bus_volumes": audio_bus_volumes,
+	}
+
+static func from_dictionary(data: Dictionary) -> SaveGameData:
+	var save_game_data := SaveGameData.new()
+
+	if data.has("unlocked_collectibles_ids"):
+		for collectible_id in data["unlocked_collectibles_ids"]:
+			save_game_data.unlocked_collectibles_ids.append(StringName(str(collectible_id)))
+
+	if data.has("saved_photos"):
+		for photo_path in data["saved_photos"]:
+			save_game_data.saved_photos.append(str(photo_path))
+
+	if data.has("audio_bus_volumes") and data["audio_bus_volumes"] is Dictionary:
+		for bus_name in data["audio_bus_volumes"]:
+			save_game_data.audio_bus_volumes[str(bus_name)] = float(data["audio_bus_volumes"][bus_name])
+
+	return save_game_data

core/game_state/save_game_data.gd.uid

@@ -0,0 +1 @@
+uid://bxmvs842r82vl