I don't know how to send custom messages, never done it. Anyway, I think you can have all you need with timer, trigger and quest property classes.

Well, I don't know much about I.A., inferences, heuristics and so on and I don't know if CEL is offering something to help (depending the complexity you can search for algorithms on the net, like pathfinding and so on).
I find simple to use a states logic with "PcProperties".
http://crystalspace3d.org/cel/docs/online/api-1.2/structiPcProperties.html

You can store the actual state of the entity, like "walking", "waiting", "pissing" and program the actions for the times you set a new state:

// after telling an entity to walk
npc1.newstate:=walking
if npc1.oldstate="pissing" do
  Nothing, wait a moment just in case
else if npc1.oldstate=waiting do
  npc1.Forwardspeed:=5
  npc1.oldstate:=walking
  npc1.newstate:=null
end if


If you are doing something simple I think that the idea works.

umm... well... I hope you checked the problem already... I haven't read the forums in holidays...
I don't remember very well but I think that if you clean the configuration ( /configure clean) is when you delete these rules. If it is what happened, I think it is necesary to run /configure again to uninstall (someone correct me if I'm wrong please ;P)

what is the output running "sudo make uninstall"?

I really like the Idea!

But keep in mind that lot of people likes the micro management, and if you remove that aspect, you have to try to add fun in other aspects. I personally like the idea of units which evolve to different environments mission by mission.

Target aim:
I'd love to sell it someday.. probably on a forgotten website that rarely gets visited.

Keep in mind to free the code someday, so somebody will take advantage using your algorithms and maybe improve the game,

Well, I've been busy lately and I haven't have time to do anything with Skruzd. Considering the little goals I had when I started this project (my hello world ;P), I think I've archieved them. Also, the idea of the game is neither original nor interesting and I think I'm not going anywhere investing more time on this, so I've decided to quit it. The code and the game is yet dirty and buggy, and the quality is... so I don't think it deserves to be posted in "Finished project" section, hehe.

Anyway, I have ideas in mind, I have friends who are interested on doing something, and a thesis to start soon, so maybe I'll be doing something better in some months.

Thanks everybody for the help and comments!!