Excercise: Game Scene (172)

The "join" and "wait" f4m actions in the Classic "shower" sub-scene "bathroom" are 15056 and 16557. Exercise 1: Explain, why the game engine only picks these two actions, after a guy has played the entry action 2021. Exercise 2: Which of the 2 actions is displayed in which of the 3 action slots and why?