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Korokoroコロコロ

Roll mixed dice or type notation, compare exact probabilities, keep a history and replay seeded rolls.

Korokoro describes something small rolling in Japanese. About the name

Contents

Reference · Rolls and exact odds

exactCountsfunction

The odds as exact whole numbers, for the dice that have them: plain dice added up, one die kept from a pool (advantage), loaded and custom dice the same way (their weights are whole numbers, so their odds are exact fractions), and several such kinds added together while that stays quick. Null for rerolled or exploding dice, for several dice kept, and for large mixed pools, whose odds are worked out as probabilities; distributionOf answers for every roll.

Import it

import { exactCounts } from "@johnmorrisdotca/korokoro";

Definition

function exactCounts(spec: RollSpec): ExactCounts | null

Parameters

NameTypeDescription
specRollSpec

Dice counts, sides, rules and modifier; omitted fields use the documented defaults.

Returns

ExactCounts | null

The odds as exact whole numbers, for the dice that have them: plain dice added up, one die kept from a pool (advantage), loaded and custom dice the same way (their weights are whole numbers, so their odds are exact fractions), and several such kinds added together while that stays quick. null for rerolled or exploding dice, for several dice kept, and for large mixed pools, whose odds are worked out as probabilities; distributionOf answers for every roll.

Examples

import { exactCounts } from "@johnmorrisdotca/korokoro";
import { normalizeSpec } from "@johnmorrisdotca/korokoro";
const spec = normalizeSpec({ count: 2, sides: 6 });
console.log(String(exactCounts(spec)?.outcomes));
36

What it prints (run when this page was built)

View sourceEdit on GitHubMade from the source of @johnmorrisdotca/korokoro 1.16.0.