Radiant is tool for creating maps used in popular games including Nexuiz, Quake and OpenArena. Unfortunately, trying to get it to install on OS X 10.6 was a bag of hurt which is why I'm detailing the necessary steps below. I came across three different versions when trying to get it to install on my Mac but was finally successful with NetRadiant after trying GTKRadiant and MacRadiant. So if you need to do the same thing then here's what you need to do:
You can find X11 version 2.3.4 on the OS X 10.6 install disc under Optional Extras. The newer version 2.4 will not run on Snow Leopard so just stick with the one on the disc.
NetRadiant is a stable fork of the GTKRadiant editor and is maintained by Alientrap software. You will find precompiled binaries at http://www.icculus.org/netradiant/files/. You'll want version 1.5.0 revision 402. Download and install into you
Patch The Libraries
Snow Leopard requires newer versions of certain libraries used in Radiant and luckily has them all in
/usr/lib, so all we have to do symlink the files in the application to the ones in
cd /Applications/NetRadiant.app/Contents/MacOS/install/ mv libxml2.2.dylib libxml2.2.dylib.bak mv libiconv.2.dylib libiconv.2.dylib.bak ln -s /usr/lib/libxml2.2.dylib libxml2.2.dylib ln -s /usr/lib/libxml184.108.40.206.dylib libxml2.2.dylib
If you start up NetRadiant, you should now see a splash screen and will be asked for a game engine. As an additional step, if you want to create maps for OpenArena, you'll need a map pack for that which you can get here. Unfortunately OpenArena is not GPL compatible, hence it is not included by default.
All you have to do to install the pack is move it into the application like so:
mv oa.game /Applications/NetRadiant.app/Contents/MacOS/install/ mv games/oa.game /Applications/NetRadiant/Contents/MacOS/install/games/
Restart the application and select OpenArena as your game engine, then get mapping!