as far as i can remember, the actors in A5 had different states, but I cant recall them now. anyhow the A5 templates.. wait! any templates are total MESSY, it would take you a sh*tload of work to integrate all that in the template scripts.
The best way is to start scripting your own game from ground off. It is hard in the beginning, but you'll learn a lot and it will get you forward a big step.
And just to help you with your first function, to make you able to actually load the level, take this:
function main
{
level_load("levelname.wmb");
}
this should be the base for all your scripts.
I could try to look through the old A5 templates now and tell you how to implement that inside there, but honestly, it wouldn't be worth it.