FPC + Mac file handling

[Andru]

While ZenGL doesn't complain about whether or not it can find the other resources (which are loaded before this map file is opened)

Emm... You can get path to YourApp.app/ via zgl_Get and constant DIRECTORY_APP(see demo01). ZenGL by itself will look for resources in YourApp.app/Contents/Resources/, if you set relative paths for textures/etc.

If I specify a full path to the file, it will run happily, but I would much prefer relative paths for actual distribution.

You can try to use Chdir with path to YourApp.app, but I don't remember if it works. Also you can try to use ZenGL file_* functions