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Merge pull request #22 from tphummel/codex/enable-hands.js-as-cli-and-module
Expose hands.js as module with cli
2 parents fa4ddc3 + a455253 commit 7553737

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‎README.md‎

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@@ -88,6 +88,14 @@ Hand: 1
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└─────────┴──────┴──────┴─────────┴─────────────┴───────────┴───────┘
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```
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## use as a module
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```js
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const simulateHands = require('./hands.js')
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const result = simulateHands(1)
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console.log(result.sessionSummary)
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```
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## table rules
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`playHand` accepts a `rules` object that controls minimum bets and odds limits.

‎hands.js‎

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@@ -1,158 +1,170 @@
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#!/usr/bin/env node
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'use strict'
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const { playHand } = require('./index.js')
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const { minPassLineMaxOddsPlaceSixEight } = require('./betting.js')
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const numHands = parseInt(process.argv.slice(2)[0], 10)
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const showDetail = process.argv.slice(2)[1]
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console.log(`Simulating ${numHands} Craps Hand(s)`)
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console.log('Using betting strategy: minPassLineMaxOddsPlaceSixEight')
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const summaryTemplate = {
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balance: 0,
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rollCount: 0,
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pointsSet: 0,
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pointsWon: 0,
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comeOutWins: 0,
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comeOutLosses: 0,
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netComeOutWins: 0,
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neutrals: 0,
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placeSixWins: 0,
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placeSixLosses: 0,
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placeEightWins: 0,
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placeEightLosses: 0,
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dist: {
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2: { ct: 0, prob: 1 / 36 },
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3: { ct: 0, prob: 2 / 36 },
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4: { ct: 0, prob: 3 / 36 },
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5: { ct: 0, prob: 4 / 36 },
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6: { ct: 0, prob: 5 / 36 },
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7: { ct: 0, prob: 6 / 36 },
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8: { ct: 0, prob: 5 / 36 },
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9: { ct: 0, prob: 4 / 36 },
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10: { ct: 0, prob: 3 / 36 },
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11: { ct: 0, prob: 2 / 36 },
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12: { ct: 0, prob: 1 / 36 }
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}
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}
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const sessionSummary = Object.assign({}, summaryTemplate)
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const hands = []
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const rules = {
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minBet: 10,
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maxOddsMultiple: {
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4: 3,
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5: 4,
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6: 5,
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8: 5,
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9: 4,
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10: 3
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function simulateHands (numHands, showDetail) {
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const summaryTemplate = {
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balance: 0,
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rollCount: 0,
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pointsSet: 0,
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pointsWon: 0,
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comeOutWins: 0,
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comeOutLosses: 0,
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netComeOutWins: 0,
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neutrals: 0,
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placeSixWins: 0,
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placeSixLosses: 0,
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placeEightWins: 0,
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placeEightLosses: 0,
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dist: {
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2: { ct: 0, prob: 1 / 36 },
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3: { ct: 0, prob: 2 / 36 },
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4: { ct: 0, prob: 3 / 36 },
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5: { ct: 0, prob: 4 / 36 },
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6: { ct: 0, prob: 5 / 36 },
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7: { ct: 0, prob: 6 / 36 },
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8: { ct: 0, prob: 5 / 36 },
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9: { ct: 0, prob: 4 / 36 },
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10: { ct: 0, prob: 3 / 36 },
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11: { ct: 0, prob: 2 / 36 },
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12: { ct: 0, prob: 1 / 36 }
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}
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}
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}
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console.log(`[table rules] minimum bet: $${rules.minBet}`)
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for (let i = 0; i < numHands; i++) {
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if (process.env.DEBUG) {
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console.log(`\n================ HAND ${i + 1} ================`)
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}
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const hand = playHand({ rules, bettingStrategy: minPassLineMaxOddsPlaceSixEight })
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hand.summary = Object.assign({}, summaryTemplate)
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sessionSummary.balance += hand.balance
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hand.summary.balance = hand.balance
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hand.history.reduce((memo, roll) => {
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memo.rollCount++
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hand.summary.rollCount++
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memo.dist[roll.diceSum].ct++
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switch (roll.result) {
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case 'neutral':
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memo.neutrals++
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hand.summary.neutrals++
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break
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case 'point set':
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memo.pointsSet++
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hand.summary.pointsSet++
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break
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case 'point win':
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memo.pointsWon++
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hand.summary.pointsWon++
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break
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case 'comeout win':
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memo.comeOutWins++
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hand.summary.comeOutWins++
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memo.netComeOutWins++
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hand.summary.netComeOutWins++
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break
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case 'comeout loss':
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memo.comeOutLosses++
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hand.summary.comeOutLosses++
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memo.netComeOutWins--
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hand.summary.netComeOutWins--
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break
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const sessionSummary = Object.assign({}, summaryTemplate)
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const hands = []
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const rules = {
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minBet: 10,
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maxOddsMultiple: {
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4: 3,
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5: 4,
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6: 5,
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8: 5,
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9: 4,
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10: 3
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}
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}
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if (Array.isArray(roll.payouts)) {
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roll.payouts.forEach(p => {
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if (p.type === 'place 6 win') {
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memo.placeSixWins++
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hand.summary.placeSixWins++
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} else if (p.type === 'place 8 win') {
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memo.placeEightWins++
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hand.summary.placeEightWins++
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}
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})
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for (let i = 0; i < numHands; i++) {
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if (process.env.DEBUG) {
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console.log(`\n================ HAND ${i + 1} ================`)
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}
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const hand = playHand({ rules, bettingStrategy: minPassLineMaxOddsPlaceSixEight })
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hand.summary = Object.assign({}, summaryTemplate)
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sessionSummary.balance += hand.balance
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hand.summary.balance = hand.balance
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hand.history.reduce((memo, roll) => {
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memo.rollCount++
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hand.summary.rollCount++
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memo.dist[roll.diceSum].ct++
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switch (roll.result) {
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case 'neutral':
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memo.neutrals++
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hand.summary.neutrals++
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break
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case 'point set':
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memo.pointsSet++
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hand.summary.pointsSet++
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break
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case 'point win':
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memo.pointsWon++
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hand.summary.pointsWon++
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break
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case 'comeout win':
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memo.comeOutWins++
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hand.summary.comeOutWins++
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memo.netComeOutWins++
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hand.summary.netComeOutWins++
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break
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case 'comeout loss':
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memo.comeOutLosses++
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hand.summary.comeOutLosses++
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memo.netComeOutWins--
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hand.summary.netComeOutWins--
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break
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}
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111-
if (roll.result === 'seven out') {
112-
if (roll.betsBefore?.place?.six) {
113-
memo.placeSixLosses++
114-
hand.summary.placeSixLosses++
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if (Array.isArray(roll.payouts)) {
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roll.payouts.forEach(p => {
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if (p.type === 'place 6 win') {
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memo.placeSixWins++
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hand.summary.placeSixWins++
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} else if (p.type === 'place 8 win') {
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memo.placeEightWins++
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hand.summary.placeEightWins++
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}
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})
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}
116-
if (roll.betsBefore?.place?.eight) {
117-
memo.placeEightLosses++
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hand.summary.placeEightLosses++
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if (roll.result === 'seven out') {
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if (roll.betsBefore?.place?.six) {
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memo.placeSixLosses++
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hand.summary.placeSixLosses++
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}
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if (roll.betsBefore?.place?.eight) {
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memo.placeEightLosses++
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hand.summary.placeEightLosses++
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}
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}
120-
}
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122-
return memo
123-
}, sessionSummary)
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return memo
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}, sessionSummary)
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118+
hands.push(hand)
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}
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sessionSummary.handCount = hands.length
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for (const k of Object.keys(sessionSummary.dist)) {
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sessionSummary.dist[k].ref = Number((sessionSummary.dist[k].prob * sessionSummary.rollCount).toFixed(1))
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sessionSummary.dist[k].diff = Number((sessionSummary.dist[k].ct - sessionSummary.dist[k].ref).toFixed(1))
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sessionSummary.dist[k].diff_pct = Number((((sessionSummary.dist[k].ct - sessionSummary.dist[k].ref) / sessionSummary.dist[k].ref) * 100).toFixed(1))
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if (showDetail) {
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sessionSummary.dist[k].ref_work = `${(sessionSummary.dist[k].prob * sessionSummary.rollCount).toFixed(1)} (${sessionSummary.rollCount} * ${sessionSummary.dist[k].prob.toFixed(2)})`
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}
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delete sessionSummary.dist[k].prob
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}
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125-
hands.push(hand)
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return { sessionSummary, hands, rules }
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}
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128-
sessionSummary.handCount = hands.length
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function printResults ({ sessionSummary, hands, showDetail, rules }) {
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console.log(`[table rules] minimum bet: $${rules.minBet}`)
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console.log('\nDice Roll Distribution')
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console.table(sessionSummary.dist)
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delete sessionSummary.dist
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console.log('\nSession Summary')
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console.table(sessionSummary)
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console.log('\nHands Summary')
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console.table(hands.map(hand => {
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delete hand.summary.dist
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return hand.summary
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}))
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130-
for (const k of Object.keys(sessionSummary.dist)) {
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sessionSummary.dist[k].ref = Number((sessionSummary.dist[k].prob * sessionSummary.rollCount).toFixed(1))
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sessionSummary.dist[k].diff = Number((sessionSummary.dist[k].ct - sessionSummary.dist[k].ref).toFixed(1))
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sessionSummary.dist[k].diff_pct = Number((((sessionSummary.dist[k].ct - sessionSummary.dist[k].ref) / sessionSummary.dist[k].ref) * 100).toFixed(1))
134152
if (showDetail) {
135-
sessionSummary.dist[k].ref_work = `${(sessionSummary.dist[k].prob * sessionSummary.rollCount).toFixed(1)} (${sessionSummary.rollCount} * ${sessionSummary.dist[k].prob.toFixed(2)})`
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console.log('\nHands')
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hands.forEach((hand, handNum) => {
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console.log(`\nHand: ${handNum + 1}, Balance: $${hand.balance}`)
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console.table(hand.history)
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})
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}
137-
delete sessionSummary.dist[k].prob
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}
139-
console.log('\nDice Roll Distribution')
140-
console.table(sessionSummary.dist)
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delete sessionSummary.dist
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console.log('\nSession Summary')
144-
console.table(sessionSummary)
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console.log('\nHands Summary')
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console.table(hands.map(hand => {
148-
delete hand.summary.dist
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return hand.summary
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}))
151-
152-
if (showDetail) {
153-
console.log('\nHands')
154-
hands.forEach((hand, handNum) => {
155-
console.log(`\nHand: ${handNum + 1}, Balance: $${hand.balance}`)
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console.table(hand.history)
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})
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161+
if (require.main === module) {
162+
const numHands = parseInt(process.argv[2], 10)
163+
const showDetail = process.argv[3]
164+
console.log(`Simulating ${numHands} Craps Hand(s)`)
165+
console.log('Using betting strategy: minPassLineMaxOddsPlaceSixEight')
166+
const result = simulateHands(numHands, showDetail)
167+
printResults({ ...result, showDetail })
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} else {
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module.exports = simulateHands
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}

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