Believable group behaviours for NPCs in FPS games

Among the many uses of Artificial Intelligence techniques in video games, one particularly relevant from the perspective of the entertainment of the player is the ability to mimic believable behaviours in non-playing characters for first-person-shooter games. In our opinion, the solutions commonly adopted in the industry could be improved by simulating decision making under condition of incomplete information. To tackle this aspect, we propose a perspective approach that pairs behaviour trees to a simplified Publisher-Subscribers communication pattern.