Create Subfolders In Resource Directory

Question

This should be a simple question, but I can't find any answers to it! In my iPhone project I'm trying to create sub directories inside the resource directory of my bundle, but the resources always end up in the bundle's root directory.
The only way I was able to get this to work was to create a new "Copy Files Build Phase" for each sub-directory I want to create. But there has to be an easier way, right?
Any suggestions?

Answer 1

To give you one example: my app has 2D grid with tiles that are generated by a Python script outside Xcode and then placed in the resource directory before compilation. Each tile as 8 distinct files, so I group them in a directory.
The app itself spiders through all the tiles at startup to create a data structure for each tile.
It could also have been solved by having a certain filename or create a plist with all the tiles, but this just was the most convenient way to do.
BTW, to the original poster: Xcode won't pick up dependencies on this. If you change files inside the directory and it's not a known file type, it won't update already present files in the build directory, so you'll have to a make clean before compiling. This has bitten me multiple times...