NodeReference how to update

[fabre.cedric]

Hello,
I would like to know how to update a pointer to a nodeReference in Unigine (I think i need similar function to the "Apply" button in the panel of NodeReference from Unigine Editor).
For exemple, I have a Node named "toto.node" that contain a NodeReference to "test.node" that contain one mesh and one "green" Light.
If I change the color of the light in "red" for exemple and save the xml "test.node" and after reload "toto.node", the light is "green".

If I delete all nodes from memory with Unigine::World::getRootNodes(listOfNodes); clearNode and deleteForce, the light stay "green". (The NodeReference is never delete from memory ?)
If I close the software and reload my scene the light have take the good "red" color.
I have tested with setAutoReloadNodeReferences(true) but that doesn't work in my case.
How to made this properly ?
Thanks

Edited November 8, 2021 by fabre.cedric

[cash-metall]

Hello! 

this is due to node caching. you need to call World::clearNode before reload node.

however i found a small bug
when  node loaded by name - node stored in the cache by name
when node loaded from parent noderef - node stored in the cache by GUID.

so it needs to be cleaned twice. 

I'll add this to an internal bug tracker, but for now here's a small example with workaround:

int AppSystemLogic::update()
{
	const char * inner_name = "inner.node";
	const char * outer_name = "outer.node";

	if (App::clearKeyState('l'))
	{
		// load outer noderef
		node = World::loadNode(outer_name);
	}

	if (App::clearKeyState('k'))
	{
		// load, change and save inner noderef
		NodePtr inner = World::loadNode(inner_name);
		LightOmniPtr light = checked_ptr_cast<LightOmni>(inner->getChild(0));
		light->setColorFilter(vec4(randColor()));
		World::saveNode(inner_name, inner);
		inner->deleteForce();
		// clear cache by name and by GUID (outer load inner by GUID)
		World::clearNode(inner_name);
		World::clearNode(FileSystem::getGUID(inner_name).getFileSystemString());
	}

	if (App::clearKeyState('j'))
	{
		// save transform
		auto t = node->getWorldTransform();

		// reload node
		node->deleteForce();
		node = World::loadNode(outer_name, 0); // 0 - load without cache

		// restore transform
		node->setWorldTransform(t);
	}


	return 1;
}

 

inner.node outer.node

Edited November 9, 2021 by cash-metall
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[fabre.cedric]

Hi,
Ok thanks for this explanation, that help me a lot.

[romain.janil]

good to know !