diff options
| -rw-r--r-- | __tests__/dice.test.js | 63 | ||||
| -rw-r--r-- | src/dice.js | 9 |
2 files changed, 71 insertions, 1 deletions
diff --git a/__tests__/dice.test.js b/__tests__/dice.test.js index 1be0744..6fb48a2 100644 --- a/__tests__/dice.test.js +++ b/__tests__/dice.test.js @@ -6,7 +6,8 @@ const { subtract, negative, explode, - keepHigh + keepHigh, + bonusAdd } = require('../src/dice.js') const defaultNumberRolls = 500 @@ -406,3 +407,63 @@ describe('keep', () => { testDie(die, basicDieTestSpecs(1, 20)) }) }) + +describe('bonusAdd', () => { + describe('1d20+3', () => { + const die = bonusAdd(d(constant(1), constant(20)), constant(3)) + testDie(die, { + diceCount: 1, + average: { + average: 13.5 + }, + variance: { + variance: 33.25 + }, + bounds: { + low: 4, + high: 23, + expectLow: true, + expectHigh: true + } + }) + }) + + describe('3d4+1', () => { + const die = bonusAdd(d(constant(3), constant(4)), constant(1)) + testDie(die, { + diceCount: 3, + average: { + average: 10.5 + }, + variance: { + variance: 3.75 + }, + bounds: { + low: 6, + high: 15, + expectLow: true, + expectHigh: true + } + }) + }) + + describe('2d6+1d6', () => { + const die = bonusAdd(d(constant(2), constant(6)), + d(constant(1), constant(6))) + testDie(die, { + diceCount: 2, + average: { + average: 14 + }, + variance: { + variance: 11.67 + }, + bounds: { + low: 4, + high: 24, + expectLow: false, + expectHigh: false + } + }) + }) +}) diff --git a/src/dice.js b/src/dice.js index 5e3b975..14addd4 100644 --- a/src/dice.js +++ b/src/dice.js @@ -75,6 +75,14 @@ const keepHigh = (die1, die2) => { } } +const bonusAdd = (die1, die2) => { + return () => { + return die1().map(die => { + return () => die() + roll(die2) + }) + } +} + exports.pool = pool exports.roll = roll exports.constant = constant @@ -84,3 +92,4 @@ exports.subtract = subtract exports.negative = negative exports.explode = explode exports.keepHigh = keepHigh +exports.bonusAdd = bonusAdd |