initial shit

addons/savekit/resource.gd

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+@abstract
+class_name SaveKitResource
+extends Resource
+## Base class for user-defined resources that can be saved and loaded.
+##
+## [code]SaveKitResource[/code]s are used instead of the base [Resource] class to clearly identify data that is meant for persistence in save files, versus resource data that is part of the game's PCK.
+
+## Emitted whenever this resource is saved.
+signal saved
+
+## Emitted whenever this resource is loaded.
+signal loaded
+
+const ReflectionUtils := preload("reflection_utils.gd")
+const Serializer := preload("serializer.gd")
+const Deserializer := preload("deserializer.gd")
+
+## Saves data for this resource into a dictionary, suitable for persisting. This will serialize all of the resource's exported properties that have a non-default value.
+##
+## This method can be overridden to implement custom saving behavior.
+func save_to_dict(s: Serializer) -> Dictionary:
+	var script: Script = get_script()
+	var script_property_default_values: Dictionary[String, Variant]
+	ReflectionUtils.get_script_default_property_values(script, script_property_default_values)
+	
+	var save_dict := {}
+	for property in script.get_script_property_list():
+		var name: String = property["name"]
+		var usage: PropertyUsageFlags = property["usage"]
+		if usage & PROPERTY_USAGE_STORAGE == 0:
+			continue
+		
+		var value: Variant = get(name)
+
+		# Don't save default values
+		if name in script_property_default_values and value == script_property_default_values[name]:
+			continue
+		
+		save_dict[name] = s.encode_var(value)
+	
+	saved.emit()
+	return save_dict
+
+## Loads data into this resource from the given dictionary. This will set the resource's properties to the decoded values of [param data].
+##
+## This method can be overridden to implement custom loading behavior.
+func load_from_dict(s: Deserializer, data: Dictionary) -> void:
+	var properties_by_name: Dictionary[String, Dictionary]
+	for property: Dictionary in self.get_property_list():
+		properties_by_name[property.name] = property
+
+	for name: String in data:
+		if name not in properties_by_name:
+			push_warning("Cannot load saved property ", name, " not currently found on resource ", self )
+			continue
+
+		var property := properties_by_name[name]
+		var usage_flags: PropertyUsageFlags = property["usage"]
+		if usage_flags & PROPERTY_USAGE_STORAGE == 0:
+			push_warning("Not loading property ", name, " with storage disabled")
+			continue
+		
+		var encoded_value: Variant = data[name]
+		var type: Variant.Type = property["type"]
+		var classname: StringName = property.get("class_name", &"")
+
+		var decoded_value: Variant = s.decode_var(encoded_value, type, classname)
+		set(name, decoded_value)
+
+	loaded.emit()
+	emit_changed()