Thanks for the ideas
I have been trying to make it infect the 'Furiae' bot, but have found that it's impossible unless two viruses or a virus and a bullet hit it at the same time. I made infected bots fire out bullets which deleted genes in robots that they hit. The problem was that the last gene in 'Furiae' set delgene, and other useful commands to 0. Bullets can't contain two commands, and viruses can't contain two genes, so the only way is for two to hit at exactly the same time (which is almost impossible ).
edit:
Here is the updated version. It now deletes some of the host's genes incase of an an antivirus system.
cond
0
0
=
start
*.thisgene .mkvirus store
250 .vshoot store
150
.aimsx
store
50
.repro
store
5
.up
store
*.thisgene
1
sub
.delgene
store
stop
end