emotion.rs — Emotional State & Affective Logic

Oxyde agents track a 6-dimensional emotion vector that evolves with player interaction and LLM responses. This underpins memory weighting, goal shifts, and behavioral tone.

💠 Emotion Model

pub struct EmotionVector {
    pub joy: f32,
    pub trust: f32,
    pub fear: f32,
    pub sadness: f32,
    pub anger: f32,
    pub surprise: f32,
}

Inspired by the Plutchik wheel of emotion, this model allows nuanced emotional shifts instead of binary mood flags.

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🧮 Emotional Delta

After each interaction, agents compute:

pub struct EmotionDelta {
    pub joy: f32,
    pub anger: f32,
    // ...
}

Which is applied via:

fn apply_emotion_delta(&mut self, delta: EmotionDelta)

Emotion decays naturally over time via decay().

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🔁 Inference Feedback Loop

• The LLM’s output is parsed for sentiment/emotion

• That sentiment is turned into an EmotionDelta

• The updated EmotionVector affects:

  • Prompt tone

  • Memory retrieval weight

  • Goal reprioritization

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🧪 Example: NPC Gets Betrayed

EmotionDelta {
  trust: -0.6,
  anger: +0.4,
  sadness: +0.2
}

→ Stored in memory → Trust-related memories lose priority → Future prompts become defensive or cold

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🕯️ Future Extensions

• Mood visualization for UIs

• Emotion-triggered animations

• Multi-agent emotional contagion