node-gamedig/protocols/rfactor.js

import Core from './core.js'

export default class rfactor extends Core {
  async run (state) {
    const buffer = await this.udpSend('rF_S', b => b)
    const reader = this.reader(buffer)

    state.raw.gamename = this.readString(reader, 8)
    state.raw.fullUpdate = reader.uint(1)
    state.raw.region = reader.uint(2)
    state.raw.ip = reader.part(4)
    state.raw.size = reader.uint(2)
    state.version = reader.uint(2)
    state.raw.versionRaceCast = reader.uint(2)
    state.gamePort = reader.uint(2)
    state.raw.queryPort = reader.uint(2)
    state.raw.game = this.readString(reader, 20)
    state.name = this.readString(reader, 28)
    state.map = this.readString(reader, 32)
    state.raw.motd = this.readString(reader, 96)
    state.raw.packedAids = reader.uint(2)
    state.raw.ping = reader.uint(2)
    state.raw.packedFlags = reader.uint(1)
    state.raw.rate = reader.uint(1)
    state.numplayers = reader.uint(1)
    state.maxplayers = reader.uint(1)
    state.raw.bots = reader.uint(1)
    state.raw.packedSpecial = reader.uint(1)
    state.raw.damage = reader.uint(1)
    state.raw.packedRules = reader.uint(2)
    state.raw.credits1 = reader.uint(1)
    state.raw.credits2 = reader.uint(2)
    this.logger.debug(reader.offset())
    state.raw.time = reader.uint(2)
    state.raw.laps = reader.uint(2) / 16
    reader.skip(3)
    state.raw.vehicles = reader.string()

    state.password = !!(state.raw.packedSpecial & 2)
    state.raw.raceCast = !!(state.raw.packedSpecial & 4)
    state.raw.fixedSetups = !!(state.raw.packedSpecial & 16)

    const aids = [
      'TractionControl',
      'AntiLockBraking',
      'StabilityControl',
      'AutoShifting',
      'AutoClutch',
      'Invulnerability',
      'OppositeLock',
      'SteeringHelp',
      'BrakingHelp',
      'SpinRecovery',
      'AutoPitstop'
    ]
    state.raw.aids = []
    for (let offset = 0; offset < aids.length; offset++) {
      if (state.packedAids && (1 << offset)) {
        state.raw.aids.push(aids[offset])
      }
    }
  }

  // Consumes bytesToConsume, but only returns string up to the first null
  readString (reader, bytesToConsume) {
    const consumed = reader.part(bytesToConsume)
    return this.reader(consumed).string()
  }
}