The environment file also contains a UE4_CURRENT_MAP entry that is set automatically by our UE4 Houdini plugin and makes it possible to access content for the currently loaded level in the UE4 editor. This setup allows us to resolve project file paths independently from the working directory of the current Houdini session.
We also have variables for the UE4 project root, working files, and many other commonly used directories.
In this case, the variable refers to a folder that contains generic data files, exported from UE4, and acts as input to Houdini. We set up environment files and added utility functions both for Houdini and UE4 to resolve them, so the paths can be used across workspaces and programs. Notice the variable %UE4_HOUDINI_INPUT at the beginning of the path. %UE4_HOUDINI_INPUT/Buildings/Tilesets/TFP_BS_B02.json In the screenshot above, you can see a Houdini Path in the first line: All the tileset files are automatically exported to JSON text files that can be referenced inside the Houdini HDAs using a custom variable syntax.
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