Nodejsを使った簡単なじゃんけんゲームの実装方法

console.log(process.argv)

// spr.js
// 石头剪刀布小游戏
// 命令行命令：node spr.js rock
// argv 可以获取到命令行 node 后面输入的行为
// let playerAction = process.argv[process.argv.length - 1]; // 最后面的输入
let playerAction = process.argv[2]; // 也可以通过下标直接获取
console.log('你出了', playerAction)
if (playerAction != 'rock' && playerAction != 'paper' && playerAction != 'scissor') {
  console.log('请输入rock或paper或scissor')
} else {
  // 电脑通过随机数生成石头剪刀布
  let computerAction;
  let random = Math.random() * 3;
  if (random < 1) {
    console.log('电脑出了石头')
    computerAction = 'rock'
  } else if (random > 2) {
    console.log('电脑出了剪刀')
    computerAction = 'scissor'
  } else {
    console.log('电脑出了布')
    computerAction = 'paper'
  }

  // 比较分出输赢
  if (computerAction === playerAction) {
    console.log('平局')
  } else if (
    (computerAction == 'rock' && playerAction == 'scissor') ||
    (computerAction == 'scissor' && playerAction == 'paper') ||
    (computerAction == 'paper' && playerAction == 'rock')
  ) {
    console.log('你输了')
  } else {
    console.log('你赢了')
  }
}

node spr.js rock
node spr.js scissor
node spr.js paper

// game.js
module.exports = function (playerAction) {
  if (['rock', 'scissor', 'paper'].indexOf(playerAction) == -1) {
    throw new Error('请输入rock或paper或scissor');
  }
  // 电脑通过随机数生成石头剪刀布
  var computerAction;
  var random = Math.random() * 3
  if (random < 1) {
    computerAction = 'rock'
    console.log('电脑出了石头')
  } else if (random > 2) {
    computerAction = 'scissor'
    console.log('电脑出了剪刀')
  } else {
    computerAction = 'paper'
    console.log('电脑出了布')
  }

  // 比较分出输赢
  if (computerAction === playerAction) {
    console.log('平局')
    return 0;
  } else if (
    (computerAction == 'rock' && playerAction == 'scissor') ||
    (computerAction == 'scissor' && playerAction == 'paper') ||
    (computerAction == 'paper' && playerAction == 'rock')
  ) {
    console.log('你输了')
    return -1;
  } else {
    console.log('你赢了')
    return 1;
  }
}

// argv 可以获取到命令行 node 后面输入的行为
var playerAction = process.argv[process.argv.length - 1];
console.log(playerAction);

// 通过 require 引入石头剪刀布游戏模块
const game = require('./game.js')
const result = game(playerAction);
console.log(result)

// 获取进程的标准输入
process.stdin.on('data', (buffer) => {
  // 回调的是 buffer，需要处理成 string
  const action = buffer.toString().trim();
  console.log(action)
})

const game = require('./game.js')
var winCount = 0;
// 获取进程的标准输入
process.stdin.on('data', (buffer) => {
  // 回调的是 buffer，需要处理成 string
  const action = buffer.toString().trim();
  const result = game(action);
  if (result == 1) {
    winCount++
    if (winCount == 3) {
      console.log('我不玩儿了！哼！');
      process.exit();
    }
  }
})