fixed package_get_filename()

Author: Roberto De Ioris

Source/UnrealEnginePython/Private/UObject/UEPyPackage.cpp

@@ -3,13 +3,12 @@
 
 PyObject *py_ue_package_is_dirty(ue_PyUObject *self, PyObject * args)
 {
-
 	ue_py_check(self);
-	if (!self->ue_object->IsA<UPackage>())
-	{
+
+	UPackage *package = ue_py_check_type<UPackage>(self);
+	if (!package)
 		return PyErr_Format(PyExc_Exception, "uobject is not an UPackage");
-	}
-	UPackage *package = (UPackage *)self->ue_object;
+
 	if (package->IsDirty())
 		Py_RETURN_TRUE;
 	Py_RETURN_FALSE;
@@ -19,13 +18,15 @@ PyObject *py_ue_package_get_filename(ue_PyUObject *self, PyObject * args)
 {
 
 	ue_py_check(self);
-	if (!self->ue_object->IsA<UPackage>())
-	{
+	UPackage *package = ue_py_check_type<UPackage>(self);
+	if (!package)
 		return PyErr_Format(PyExc_Exception, "uobject is not an UPackage");
-	}
 
-	UPackage *package = (UPackage *)self->ue_object;
-	return PyUnicode_FromString(TCHAR_TO_UTF8(*package->FileName.ToString()));
+	FString Filename;
+	if (!FPackageName::DoesPackageExist(package->GetPathName(), nullptr, &Filename))
+		return PyErr_Format(PyExc_Exception, "package does not exist");
+
+	return PyUnicode_FromString(TCHAR_TO_UTF8(*Filename));
 }
 
 PyObject *py_ue_package_make_unique_object_name(ue_PyUObject *self, PyObject * args)