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RUST · NARRATIVE & GAME AI

dialogger-rs — Branching Narrative Graph & NPC Bark Evaluator in Pure Rust

dialogger-rs is a zero-allocation Rust runtime for executing branching RPG dialogue trees, conditional story gates, and contextual NPC barks. It parses Dialogger node graphs and evaluates variable predicates and weighted response priorities in sub-microsecond time.

$ cargo add dialogger-rs
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Scenario Presets

Graph Visualizer

History Trace

    Dialogue Player

    🧙‍♂️
    Innkeeper Brom
    [expression: welcoming] • [voice: brom_greet_01.ogg]
    Welcome, weary traveler. Rest by the hearth, or seek you rumors of the shadow in the hills?

    Event & State Log

    [System] Initialized dialogue runner. Variable store synchronized.

    Variable Store

    NPC Ambient Barks

    Trigger contextual reaction barks with priority gating, cooldowns, and weighted repeat prevention.

    Recent Barks

    Performance Benchmarks (vs Yarn/Ink)

    Graph Node Step: 466.13 ns (2.1M/s)
    Yarn / Ink C# Step: ~25-60 µs (80× faster)
    Full Story Traversal: 2.33 µs (429k/s)
    Expression Evaluator: 757.83 ns (1.3M/s)
    Bark Triage (100 barks): 4.82 µs (48 ns/bark)
    View Full Benchmarks Report →