MULTI-OBJECT ASSETS | UNITY

Learn how to create a standalone Houdini Digital Asset containing multiple Houdini object (OBJ) nodes inside.

In Houdini

1. From the Create shelf, click on Torus, then press Enter in the viewport.
2. From the Create shelf, click on Sphere, then press Enter in the viewport.
3. In the network pane, select both of the newly created nodes: torus_object1 and sphere_object1.
4. In Houdini's top-level menu, click on Assets > New Digital Asset From Selection....
5. Give it a nice Operator Name like torus_sphere and set the Save to Library to an appropriate folder with a nice name like torus_sphere.hda. Hit Accept.
6. When the Edit Operator Type Properties window appears, select Accept.
7. You should now have a new node in the network pane called subnet1. This is an aggregate node that contains your torus and sphere nodes.
8. To see the torus and sphere nodes double-click on the subnet1 node.
9. The benefit of multi-object assets, even if they contain a single object to start with, is that one can easily add more objects in the future without having to create a new asset.
   

In Unity

1. Go to Houdini Engine > Load Houdini Asset... and find your torus_sphere.hda asset.
2. You should see the sphere within the torus in the Scene view.