diff options
| -rw-r--r-- | __tests__/dice.test.js | 41 | ||||
| -rw-r--r-- | __tests__/lexer.test.js | 12 | ||||
| -rw-r--r-- | __tests__/parser.test.js | 12 | ||||
| -rw-r--r-- | index.js | 2 | ||||
| -rw-r--r-- | src/dice.js | 9 | ||||
| -rw-r--r-- | src/lexer.js | 1 | ||||
| -rw-r--r-- | src/parser.js | 1 |
7 files changed, 78 insertions, 0 deletions
diff --git a/__tests__/dice.test.js b/__tests__/dice.test.js index 375c9ad..9c03a48 100644 --- a/__tests__/dice.test.js +++ b/__tests__/dice.test.js @@ -9,6 +9,7 @@ const { bonusAdd, bonusSubtract, bonusMultiply, + bonusDivide, negative, explodeAbove, explodeUnder, @@ -503,6 +504,46 @@ describe('bonusMultiply', () => { }) }) +describe('bonusDivide', () => { + describe('1d20/3', () => { + const die = bonusDivide(d(constant(1), constant(20)), constant(3)) + testDie(die, { + diceCount: 1, + average: { + average: 3.15 + }, + variance: { + variance: 3.73 + }, + bounds: { + low: 0, + high: 6, + expectLow: true, + expectHigh: true + } + }) + }) + + describe('3d4/2', () => { + const die = bonusDivide(d(constant(3), constant(4)), constant(2)) + testDie(die, { + diceCount: 3, + average: { + average: 3 + }, + variance: { + variance: 1.5 + }, + bounds: { + low: 0, + high: 6, + expectLow: true, + expectHigh: true + } + }) + }) +}) + describe('negative', () => { describeBasicDie(1, 6, defaultNumberRolls, true) describeBasicDie(0, 6, defaultNumberRolls, true) diff --git a/__tests__/lexer.test.js b/__tests__/lexer.test.js index 31150bc..7124746 100644 --- a/__tests__/lexer.test.js +++ b/__tests__/lexer.test.js @@ -253,6 +253,18 @@ describe('lex', () => { }) }) + describe('bonusDivide', () => { + test('3d4/1', () => { + expect(lex('3d4/1')).toEqual([ + { type: 'constant', value: 3 }, + { type: 'd' }, + { type: 'constant', value: 4 }, + { type: 'divide' }, + { type: 'constant', value: 1 } + ]) + }) + }) + describe('again', () => { test('6A3d6', () => { expect(lex('6A3d6')).toEqual([ diff --git a/__tests__/parser.test.js b/__tests__/parser.test.js index 5580b4c..3c9f6ec 100644 --- a/__tests__/parser.test.js +++ b/__tests__/parser.test.js @@ -165,6 +165,18 @@ describe('parse', () => { }) }) + it('parses divisional bonuses', () => { + expect(parse('3d4/1')).toEqual({ + type: 'bonusDivide', + left: { + type: 'd', + left: { type: 'constant', value: 3 }, + right: { type: 'constant', value: 4 } + }, + right: { type: 'constant', value: 1 } + }) + }) + test('bonus binds stronger than addition', () => { expect(parse('2d6 + 2d6+2d6')).toEqual({ type: 'add', @@ -39,6 +39,8 @@ const interpret = tree => { return D.bonusSubtract(interpret(tree.left), interpret(tree.right)) case 'bonusMultiply': return D.bonusMultiply(interpret(tree.left), interpret(tree.right)) + case 'bonusDivide': + return D.bonusDivide(interpret(tree.left), interpret(tree.right)) case 'repeat': return D.repeat(interpret(tree.left), interpret(tree.right)) } diff --git a/src/dice.js b/src/dice.js index 6351929..0197f25 100644 --- a/src/dice.js +++ b/src/dice.js @@ -81,6 +81,14 @@ const bonusMultiply = (die1, die2) => { } } +const bonusDivide = (die1, die2) => { + return () => { + return die1().map(die => { + return () => Math.floor(die() / roll(die2)) + }) + } +} + const explode = (comparison, die1, die2) => { return () => { const explodeOn = roll(die1) @@ -225,6 +233,7 @@ exports.divide = divide exports.bonusAdd = bonusAdd exports.bonusSubtract = bonusSubtract exports.bonusMultiply = bonusMultiply +exports.bonusDivide = bonusDivide exports.negative = negative exports.explodeAbove = explodeAbove exports.explodeUnder = explodeUnder diff --git a/src/lexer.js b/src/lexer.js index e700f87..6b75129 100644 --- a/src/lexer.js +++ b/src/lexer.js @@ -23,6 +23,7 @@ newLexemeType('bigDivide', ' / ') newLexemeType('plus', '\\+') newLexemeType('minus', '-') newLexemeType('times', '\\*') +newLexemeType('divide', '/') newLexemeType('(', '\\(') newLexemeType(')', '\\)') newLexemeType('E', 'E') diff --git a/src/parser.js b/src/parser.js index 54dc0ae..acae9ad 100644 --- a/src/parser.js +++ b/src/parser.js @@ -76,6 +76,7 @@ newInfix('bigDivide', 23, { type: 'divide' }) newInfix('plus', 25, { type: 'bonusAdd' }) newInfix('minus', 25, { type: 'bonusSubtract' }) newInfix('times', 26, { type: 'bonusMultiply' }) +newInfix('divide', 26, { type: 'bonusDivide' }) newSymbol('minus', (parser) => { return { type: 'negative', |