But Snrrrub is a university boy so he is very busy. I wonder if his client will ever get done. But fi you are a good programmer then maybe you can help him out. Also, it is not a linux prt, but a very corss-platform port of the game (OSX, Linux/Unix, Windows, ...).
Proximity is in tiles, so the minimum bomb damage radius that does any damage is prox radius * 16. The server help site had a bomb damage calculator too, you can use that for fast testing.