improved broadcast api

Author: Roberto De Ioris

Source/UnrealEnginePython/Private/UEPyEngine.cpp

@@ -143,6 +143,21 @@ PyObject *py_unreal_engine_convert_relative_path_to_full(PyObject * self, PyObje
 	return PyUnicode_FromString(TCHAR_TO_UTF8(*FPaths::ConvertRelativePathToFull(UTF8_TO_TCHAR(path))));
 }
 
+PyObject *py_unreal_engine_create_world(PyObject * self, PyObject * args) {
+	int world_type = 0;
+	if (!PyArg_ParseTuple(args, "|i:create_world", &world_type)) {
+		return NULL;
+	}
+
+	UWorld *world = UWorld::CreateWorld((EWorldType::Type)world_type, false);
+
+	ue_PyUObject *ret = ue_get_python_wrapper(world);
+	if (!ret)
+		return PyErr_Format(PyExc_Exception, "uobject is in invalid state");
+	Py_INCREF(ret);
+	return (PyObject *)ret;
+}
+
 PyObject *py_unreal_engine_find_class(PyObject * self, PyObject * args) {
 	char *name;
 	if (!PyArg_ParseTuple(args, "s:find_class", &name)) {

Source/UnrealEnginePython/Private/UEPyEngine.h

@@ -45,6 +45,8 @@ PyObject *py_unreal_engine_convert_relative_path_to_full(PyObject *, PyObject *)
 PyObject *py_unreal_engine_get_viewport_screenshot(PyObject *, PyObject *);
 PyObject *py_unreal_engine_get_viewport_size(PyObject *, PyObject *);
 
+PyObject *py_unreal_engine_create_world(PyObject *, PyObject *);
+
 
 #if WITH_EDITOR
 PyObject *py_unreal_engine_editor_get_active_viewport_screenshot(PyObject *, PyObject *);

Source/UnrealEnginePython/Private/UEPyModule.cpp

@@ -155,6 +155,8 @@ static PyMethodDef unreal_engine_methods[] = {
 	{ "create_checkerboard_texture", py_unreal_engine_create_checkerboard_texture, METH_VARARGS, "" },
 	{ "create_transient_texture", py_unreal_engine_create_transient_texture, METH_VARARGS, "" },
 
+	{ "create_world", py_unreal_engine_create_world, METH_VARARGS, "" },
+
 	// slate
 
 	{ "register_nomad_tab_spawner", py_unreal_engine_register_nomad_tab_spawner, METH_VARARGS, "" },

Source/UnrealEnginePython/Private/UEPyObject.cpp

@@ -553,7 +553,8 @@ PyObject *py_ue_broadcast(ue_PyUObject *self, PyObject *args) {
 
 	if (auto casted_prop = Cast<UMulticastDelegateProperty>(u_property)) {
 		FMulticastScriptDelegate multiscript_delegate = casted_prop->GetPropertyValue_InContainer(self->ue_object);
-		uint8 *parms = (uint8 *)FMemory_Alloca(0);
+		uint8 *parms = (uint8 *)FMemory_Alloca(casted_prop->SignatureFunction->PropertiesSize);
+		FMemory::Memzero(parms, casted_prop->SignatureFunction->PropertiesSize);
 		multiscript_delegate.ProcessMulticastDelegate<UObject>(parms);
 	}
 	else {