A typescript library for efficiently calculating dice probabilities with arbitrarily complex rules.
- easily handles hudreds of dice
- enumerates all possible values
https://kosrud.github.io/dice-pool-calc/
https://github.com/KosRud/dice-pool-calc-examples
import * as stats from "dice-pool-calc/stats";
import { Die } from "dice-pool-calc";
// Count rolls of 5 or higher in a pool of 12d6
const countSuccess = (accumulator: number, outcome: number) => {
if (outcome >= 5) {
accumulator++;
}
return accumulator;
};
const successPool = Die.pool(countSuccess, 0, Die.nd(12, 6));
const average = stats.average(successPool);
const median = stats.median(successPool);
console.log({ outcomes: successPool.outcomes.toJS(), average, median });output:
{
outcomes: {
'0': 0.007707346629258935,
'1': 0.0462440797755536,
'2': 0.12717121938277243,
'3': 0.21195203230462067,
'4': 0.2384460363426983,
'5': 0.19075682907415864,
'6': 0.11127481695992587,
'7': 0.04768920726853966,
'8': 0.014902877271418646,
'9': 0.0033117505047596998,
'10': 0.000496762575713955,
'11': 0.00004516023415581409,
'12': 0.0000018816764231589197
},
average: 4,
median: 6
}