I am pretty new to Houdini and still somewhat fuzzy about what is/should be at object level, SOP level etc. I Am trying to write an HDA for road generation in UE4 and am using PDG for the workflow.
In the PDG I have a SOP level node for path finding, so this is a SOP operator that also writes SOP output. This works fine in Houdini itself, where the HDA path is set using the $JOB variable:
But as I am setting the PDG_DIR path in UE4 via an HDA parameter, that doesn't work in the Houdini Engine.
However, when I change the path to use PDG_DIR inside Houdini it seems the operator type is automatically changed:
When running the corresponding PDG task I get an error about using an object operator type without SOP output:
That's confusing to me, I don't understand why changing the way the file path resolves changes the way the processor is run, and I don't know how to fix this. Any ideas?
Thanks so much, Hauke