save management

scripts/autoloads/save.gd

@@ -0,0 +1,50 @@
+class_name SaveManager
+extends Node
+
+var file: ConfigFile = ConfigFile.new()
+var save_path: String = "user://save.binary"
+
+func get_section_name(res: Resource) -> String:
+	return res.resource_name if res.resource_name != "" else res.get_class()
+
+func save(res: Resource) -> bool:
+	if not is_instance_valid(res):
+		push_error("cannot save: invalid resource")
+		return false
+	
+	var section_name: String = get_section_name(res)
+	
+	if FileAccess.file_exists(save_path) and file.load(save_path) != OK:
+		printerr("Save file corrupted!")
+		return false
+	
+	file.set_value("meta", "savedate", Time.get_datetime_string_from_system())
+	
+	for property in res.get_property_list():
+		if property.usage & PROPERTY_USAGE_STORAGE:
+			var v_name: String = property.name
+			file.set_value(section_name, v_name, res.get(v_name))
+	
+	return file.save(save_path) == OK
+
+func load(res: Resource) -> bool:
+	if not FileAccess.file_exists(save_path):
+		return true
+	if file.load(save_path) != OK:
+		printerr("Save file corrupted!")
+		return false
+	
+	var section_name: String = get_section_name(res)
+	var props := []
+	for p in res.get_property_list():
+		if p.usage & PROPERTY_USAGE_STORAGE:
+			props.append(p.name)
+	
+	for key in file.get_section_keys(section_name):
+		if key in props:
+			res.set(key, file.get_value(section_name, key))
+	return true
+
+func delete() -> void:
+	file.clear()
+	file.save(save_path)