rock-paper-scissors-stream

Streaming rock, paper scissors game

npm install -g rock-paper-scissors-stream

Usage

rock-paper-scissors-stream allows you to play rock, paper, scissors with a friend over any transport.

Using dupsh and airpaste this looks like

machine-1> dupsh 'rock-paper-scissors-stream rock' airpaste

and on another machine

machine-2> dupsh 'rock-paper-scissors-stream scissors' airpaste

This produces the following output

machine-1> dupsh 'rock-paper-scissors-stream rock' airpaste
You won! rock beats scissors

machine-2> dupsh 'rock-paper-scissors-stream scissors' airpaste
You lost! rock beats scissors

Programmatic usage

You can also use this as a module

var rps = require('rock-paper-scissors-stream')

var stream = rps('rock') // pass in your choice

stream.on('win', function (you, opponent) {
  console.log('you won (%s vs %s)', you, opponent)
})

stream.on('lose', function (you, opponent) {
  console.log('you lost (%s vs %s)', you, opponent)
})

stream.on('tie', function (you, opponent) {
  console.log('you tied (%s vs %s)', you, opponent)
})

someTransport.pipe(stream).pipe(someTransport)

How it works

It works by creating an sha256 hmac with a random nounce as the key an your weapon choice as the data argument.

You then exchange this hmac with a friend and when both of you have received eachothers hmacs you expose your weapon and nounce allowing both parties to verify that you picked your weapon before knowing what your opponent choose.

License

MIT