Can anybody tell me the name of this movie by a description?

I remember it's about a small time film maker who is trying to make a war film, but is failing so bad he decides to dump his actors inside a forest to simulate real survival. One of the actors is addicted to drugs, and when they come in contact with a small drug village he goes crazy. Quite a funny film, not sure who played in, but it's definitely a comedy. Searched all over IMDB but simply cannot remember the title. Something like desert storm, I also remember it was on xbox live for some time.