
Camp NPCs now show how they feel in their posture, layer real gestures from the animation library over whatever they're doing, move with the rhythm of their own voice, and let Claude choose how they carry each line.
The NPCs looked stiff, and their bodies didn't show any emotion. The goal wasn't a checklist of canned animations; it was the small, constant movement that makes a person look alive. The work went in as four layers on top of the existing motion matching, pose search and physics, without changing any of them.
First, posture. How tired, low, uneasy, cold or hungry someone is now bends their back, raises or rolls their shoulders, drops or lifts their head, sets their breathing and moves their weight from leg to leg. Each person also has their own way of moving, drawn from their personality: quick or slow, big or small, a stoop or a straight back, a habit like rolling their shoulders or glancing around.
Second, layered gestures. While someone talks, conversation and gesture clips from the animation library are laid over their upper body at part strength, so a talking gesture can play over sitting by the fire or a work pose. The clips follow the feeling of the line: arguing ones when they're heated, laughing ones when they're bright, quieter, sadder ones when they're low. Between lines there's a shiver in the cold, an attentive listening pose, a yawn when they're worn out.
Third, the rhythm of the words. When a line is voiced, the audio itself is read for its stressed syllables and pauses. The chin dips on stressed words, and the leading hand flicks slightly before them, the way a real gesture lands just ahead of the word it stresses. The gesture eases off in each pause. Statements end with a small nod; questions end with a lifted, tilted head while they wait for an answer. People listening nod now and then in the speaker's pauses.
Fourth, Claude chooses the body. Along with the words, an NPC's reply now says how they carry the line: a gesture only when they'd really make one (point, shrug, argue, laugh, shake their head, whisper and so on), how much energy, whether they lean in or back, where they look. These steer the same layers rather than replacing them, so it never turns into a menu of stock moves. In testing, the camp's own conversations came back choosing to just talk, to nod, or to keep still.