This extension adds feelings to every person in the world. Uses the Plutchik model: https://en.wikipedia.org/wiki/Contrasting_and_categorization_of_emotions#Plutchik.27s_wheel_of_emotions
Each person carries a feeling (which is cleverly kept off inventory listings) that may be changed in the story during play. The player has a command called 'mood' to query the mood. Of course the mood command is more useful in multiple-character games where each character may feel differently.
Each personal feeling is independent from those of other people. Computed adjectives allow querying an actor's emotional state in the story. A clever script might create rulesets to modify a character's behavior (or possible behavior) due to changes in the character's mood.