The code to add the monster entity to the scene’s entity array (so that the generator-spawned monsters get component updates) in chapter 13 comes on page 779 (or thereabouts, I’m not sure if my reader has re-numbered pages). This is fine, but it needs to be moved earlier in the chapter, to the point where the update method is added to the agent component for the monster. Since the agent component is not part of the component system that’s being driven by the GameScene update event, the monsters never participate in the “chase” behavior, which may confuse people who are new to the platform.
Excellent material, I’ve really enjoyed reading it and testing everything out since the original alpha. Once it’s out, I’m going to recommend to my friends who are interested in these technologies.