node-gamedig/protocols/armagetron.js

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import Core from './core.js'
export default class armagetron extends Core {
constructor () {
super()
this.encoding = 'latin1'
this.byteorder = 'be'
}
async run (state) {
const b = Buffer.from([0, 0x35, 0, 0, 0, 0, 0, 0x11])
const buffer = await this.udpSend(b, b => b)
const reader = this.reader(buffer)
reader.skip(6)
state.gamePort = this.readUInt(reader)
state.raw.hostname = this.readString(reader)
state.name = this.stripColorCodes(this.readString(reader))
state.numplayers = this.readUInt(reader)
state.raw.versionmin = this.readUInt(reader)
state.raw.versionmax = this.readUInt(reader)
state.raw.version = this.readString(reader)
state.maxplayers = this.readUInt(reader)
const players = this.readString(reader)
const list = players.split('\n')
for (const name of list) {
if (!name) continue
state.players.push({
name: this.stripColorCodes(name)
})
}
state.raw.options = this.stripColorCodes(this.readString(reader))
state.raw.uri = this.readString(reader)
state.raw.globalids = this.readString(reader)
}
readUInt (reader) {
const a = reader.uint(2)
const b = reader.uint(2)
return (b << 16) + a
}
readString (reader) {
const len = reader.uint(2)
if (!len) return ''
let out = ''
for (let i = 0; i < len; i += 2) {
const hi = reader.uint(1)
const lo = reader.uint(1)
if (i + 1 < len) out += String.fromCharCode(lo)
if (i + 2 < len) out += String.fromCharCode(hi)
}
return out
}
stripColorCodes (str) {
return str.replace(/0x[0-9a-f]{6}/g, '')
}
}