Automatically spectate locations (simulating cameras) and players on Sparked Host Minecraft servers

minecraft-spectate-mode.js

class MinecraftSpectateMode {
  constructor(options) {
    Object.assign(this, options)
    this.lastUser = ''
    this.mode = this.randomize(['cam', 'user'])
    this.cam = this.randomize(options.cams)
    this.input = document.querySelector(options.consoleInputQuerySelector)
    this.excludedPlayers.push(this.spectator)
    this.excludedPlayers.push('Anonymous Player')
  }

  getRandomUser() {
    let users = Array.from(
      document.querySelectorAll(this.playerNameQuerySelector)
    ).map((item) => item.innerText)
    users = users.filter((e) => !this.excludedPlayers.includes(e))
    let count = users.length
    let user = this.randomize(users)
    let selected = user()
    return selected === this.lastUser && count >= 2 ? user() : selected
  }

  log(item) {
    let now = new Date()
    let current = now.getHours() + ':' + now.getMinutes()
    console.log(`[${current}] Spectating: ${item}.`)
  }

  randomize(array) {
    let copy = array.slice(0)
    return function () {
      if (copy.length < 1) {
        copy = array.slice(0)
      }
      let index = Math.floor(Math.random() * copy.length)
      let item = copy[index]
      copy.splice(index, 1)
      return item
    }
  }

  run() {
    this.setGameMode()
    this.spectate()
    setInterval(() => this.spectate(), this.intervalInSeconds * 1000)
    return 'MinecraftSpectateMode'
  }

  sendCommandAsSpectator(command) {
    this.input.value = `execute as ${this.spectator} run execute as @a[gamemode=spectator] ${command}`
    this.simulateInputEnter()
  }

  setGameMode() {
    this.input.value = `gamemode spectator ${this.spectator}`
    this.simulateInputEnter()
  }

  simulateInputEnter() {
    let evt = new Event('keydown', { bubbles: true, cancelable: true })
    evt.keyCode = 13
    evt.key = 'Enter'
    this.input.dispatchEvent(evt)
  }

  sleep(ms) {
    return new Promise((resolve) => setTimeout(resolve, ms))
  }

  spectate() {
    let user = this.getRandomUser()
    if (!this.spectateUsers && this.spectateCams) {
      this.spectateCam()
    } else if (user && this.spectateUsers && !this.spectateCams) {
      this.spectateUser(user)
    } else if (this.spectateUsers && this.spectateCams) {
      if (this.mode() === 'cam') {
        return this.spectateCam()
      }
      user ? this.spectateUser(user) : this.spectateCam()
    }
  }

  async spectateCam() {
    let cam = this.cam()
    this.log(cam.description)
    await this.sleep(50)
    this.simulateInputEnter()
    this.sendCommandAsSpectator(
      `run execute in minecraft:${cam.world} run tp @s ${cam.coordinates} ${cam.rotation}`
    )
  }

  async spectateUser(user) {
    this.log(user)
    await this.sleep(50)
    this.sendCommandAsSpectator(`run spectate ${user}`)
  }
}

new MinecraftSpectateMode({
  intervalInSeconds: 15,
  spectator: 'YOU_USERNAME',
  spectateCams: true,
  spectateUsers: true,
  excludedPlayers: ['USER_1', 'USER_2'],
  cams: [
    {
      coordinates: '-66.500 81.73646 533.500',
      rotation: '0.0 39.0',
      world: 'overworld',
      description: 'Village',
    },
    {
      coordinates: '-66.500 83.09924 486.500',
      rotation: '0.0 40.2',
      world: 'the_nether',
      description: 'Nether Fortress',
    },
    {
      coordinates: '-48.074 86.58757 562.492',
      rotation: '-90.0 41.7',
      world: 'the_end',
      description: 'Dragon Egg',
    },
  ],
  playerNameQuerySelector: '.sc-135uotw-2.cHwxrB code',
  consoleInputQuerySelector: '.itaf37-1.jSyjnD',
}).run()