Function rollFrom

src/buddy/companion.ts:91–102

(rng: () => number)

}

function rollFrom(rng: () => number): Roll {
  const rarity = rollRarity(rng)
  const bones: CompanionBones = {
    rarity,
    species: pick(rng, SPECIES),
    eye: pick(rng, EYES),
    hat: rarity === 'common' ? 'none' : pick(rng, HATS),
    shiny: rng() < 0.01,
    stats: rollStats(rng, rarity),
  }
  return { bones, inspirationSeed: Math.floor(rng() * 1e9) }
}

// Called from three hot paths (500ms sprite tick, per-keystroke PromptInput,
// per-turn observer) with the same userId → cache the deterministic result.