hearthstone-brawl.js

const lodash = require('lodash');
const { random } = lodash;

const online = []
const offline = []
const afk = []

function addPlayer(set, fixPower) {
  set.push({
    power: fixPower || random(1, 1000, true),
    games: 0,
    hasPack: false
  })
}

for (let i = 0; i < 1000; i++) {
  addPlayer(online);
}

for (let i = 0; i < 99000; i++) {
  addPlayer(offline);
}

function afterGame(player) {
  if (!player.hasPack) {
    return
  }
  const chanceToQuit = 20+player.games
  if (random(0, 100) > chanceToQuit) {
    online.splice(online.indexOf(player), 1)
    const nextPlayer = random(0, offline.length - 1)
    online.push(offline[nextPlayer])
    offline.splice(nextPlayer, 1)
    if (random(0,2) > 0) {
      offline.push(player)
    } else {
      afk.push(player)
    }
  }
}

function battle() {
  const player1 = online[random(0, online.length - 1)]
  const player2 = online[random(0, online.length - 1)]
  if (player1.power > player2.power) {
    player2.power = player1.power
    player1.hasPack = true
  } else {
    player1.power = player2.power
    player2.hasPack = true
  }
  player1.games++
  player2.games++
  afterGame(player1)
  afterGame(player2)
}


let best = 0
online.forEach(p => {
  if (p.power > best) {
    best = p.power
  }
})
offline.forEach(p => {
  if (p.power > best) {
    best = p.power
  }
})


let count100 = 0
let count90 = 0
let count60 = 0


function stats(arr, name) {
  console.log(`${name} length: ${arr.length}`)
  arr.forEach(player => {
    if (!player) {
      return
    }
    if (player.power >= best - 0.0001) {
      count100+=1
    }
    if (player.power >= 990) {
      count90+=1
    }
    if (player.power >= 600) {
      count60+=1
    }
  })
}


stats(online, 'online')
stats(offline, 'offline')

console.log(count100, count90, count60)


for (let i = 0; i < 5000000; i++) {
  battle()
  if (offline.length === 0) {
    console.log('battles: ', i)
    break
  }
}

// console.log(online, offline, afk)


count100 = 0
count90 = 0
count60 = 0
stats(online, 'online')
// stats(offline, 'offline')
stats(afk, 'afk')

console.log(count100, count90, count60)