Method pre

radiantcore/map/algorithm/Import.cpp:156–224

	{}

	bool pre(const scene::INodePtr& originalNode) override
	{
		// The removeChildNode below might destroy the instance - push the refcount
		scene::INodePtr node = originalNode;

		// greebo: Check if the visited node is the worldspawn of the other map
		if (Node_isWorldspawn(node))
		{
			// Find the worldspawn of the target map
			const scene::INodePtr& worldSpawn = GlobalMap().getWorldspawn();

			if (!worldSpawn)
			{
				// Set the worldspawn to the new node
				GlobalMap().setWorldspawn(node);

				// greebo: Un-register the node from its previous parent first to be clean
				scene::INodePtr oldParent = node->getParent();

				if (oldParent)
				{
					oldParent->removeChildNode(node);
				}

				// Insert the visited node at the target path
				_path.top()->addChildNode(node);

				_path.push(node);

				// Select all the children of the visited node (these are primitives)
				node->foreachNode([](const scene::INodePtr& child)->bool
				{
					Node_setSelected(child, true);
					return true;
				});
			}
			else
			{
				// The target map already has a worldspawn
				_path.push(worldSpawn);

				// Move all children of this node to the target worldspawn
				PrimitiveMerger visitor(worldSpawn);
				node->traverseChildren(visitor);
			}
		}
		else
		{
			// This is an ordinary entity, not worldspawn

			// greebo: Un-register the entity from its previous root node first to be clean
			scene::INodePtr oldParent = node->getParent();

			if (oldParent)
			{
				oldParent->removeChildNode(node);
			}