initial shit

addons/savekit/reflection_utils.gd

@@ -0,0 +1,54 @@
+## Lists all exported properties on [param obj] (from its built-in class and/or script) that have a non-default value.
+##
+## Returns an array of dictionaries matching the format of [method Object.get_property_list], with an additional [code]value[/code] key containing the current value of the property.
+static func get_storable_non_default_properties(obj: Object) -> Array[Dictionary]:
+	var script: Script = obj.get_script()
+	var script_property_default_values: Dictionary[String, Variant]
+	get_script_default_property_values(script, script_property_default_values)
+	
+	var builtin_class := obj.get_class()
+	var builtin_class_property_default_values := get_builtin_class_default_property_values(builtin_class)
+
+	var property_list := obj.get_property_list()
+	var non_default_properties: Array[Dictionary]
+	for property in property_list:
+		var name: String = property["name"]
+		if name == "script":
+			# Don't try to save script references here
+			continue
+
+		var usage: PropertyUsageFlags = property["usage"]
+		if usage & PROPERTY_USAGE_STORAGE == 0:
+			continue
+		
+		var value: Variant = obj.get(name)
+
+		# Don't save default values
+		if name in script_property_default_values and value == script_property_default_values[name]:
+			continue
+		if name in builtin_class_property_default_values and value == builtin_class_property_default_values[name]:
+			continue
+		
+		property["value"] = value
+		non_default_properties.append(property)
+
+	return non_default_properties
+
+## Populates [param r_default_property_values] with the default values for all properties defined in [param script], including properties inherited from base scripts.
+static func get_script_default_property_values(script: Script, r_default_property_values: Dictionary[String, Variant]) -> void:
+	if not script:
+		return
+
+	for property in script.get_script_property_list():
+		var name: String = property["name"]
+		r_default_property_values[name] = script.get_property_default_value(name)
+
+## Returns a dictionary of default property values for a built-in (or GDExtension) class, including properties inherited from base classes if [param include_ancestors] is true.
+static func get_builtin_class_default_property_values(builtin_class: String, include_ancestors: bool = true) -> Dictionary[String, Variant]:
+	var default_property_values: Dictionary[String, Variant] = {}
+
+	for property in ClassDB.class_get_property_list(builtin_class, not include_ancestors):
+		var name: String = property["name"]
+		default_property_values[name] = ClassDB.class_get_property_default_value(builtin_class, name)
+	
+	return default_property_values