gamedata.ts

/*
  Parses actual game data
  Please note that TimeSlotBlocks do not fully parse included actions.
  They should be parsed block by block manually
  afterwards to ensure proper error handling.
*/

import { Parser } from 'binary-parser'
import { CommandDataBlock } from './actions'
import { chatModeFormatter } from './formatters'

// 0x17
const LeaveGameBlock = new Parser()
    .string('reason', { length: 4, encoding: 'hex' })
    .int8('playerId')
    .string('result', { length: 4, encoding: 'hex' })
    .skip(4)

// 0x1A
const FirstStartBlock = new Parser()
    .skip(4)

// 0x1B
const SecondStartBlock = new Parser()
    .skip(4)

// 0x1C
const ThirdStartBlock = new Parser()
    .skip(4)

// 0x1F 0x1E
const TimeSlotBlock = new Parser()
    .int16le('byteCount')
    .int16le('timeIncrement')
    .array('actions', {
        type: CommandDataBlock,
        lengthInBytes () {
            // @ts-ignore
            return this.byteCount - 2
        }
    })

// 0x20
// @ts-ignore
const PlayerChatMessageBlock = new Parser()
    .int8('playerId')
    .int16le('byteCount')
    .int8('flags')
    .choice('',
        {
            tag: 'flags',
            choices: {
                0x10: new Parser(),
                // @ts-ignore
                0x20: new Parser().int8('mode', { length: 4, formatter: chatModeFormatter, encoding: 'hex' }).skip(3)
            }
        }
    )
    .string('message', { zeroTerminated: true, encoding: 'utf8' })

// 0x22
const Unknown0x22 = new Parser()
    .uint8('length')
    .string('content', { length: 'length' })

// 0x23
const Unknown0x23 = new Parser()
    .skip(10)

// 0x2F
const ForcedGameEndCountdown = new Parser()
    .skip(8)

// @ts-ignore
const GameData = new Parser()
    .uint8('type')
    .choice('', {
        tag: 'type',
        choices: {
            0x17: LeaveGameBlock,
            0x1a: FirstStartBlock,
            0x1b: SecondStartBlock,
            0x1c: ThirdStartBlock,
            0x1f: TimeSlotBlock,
            0x1e: TimeSlotBlock,
            0x20: PlayerChatMessageBlock,
            0x22: Unknown0x22,
            0x23: Unknown0x23,
            0x2f: ForcedGameEndCountdown,
            0: new Parser()
        }
    })

const GameDataParser = new Parser()
// @ts-ignore
    .array(null, { type: GameData, readUntil: 'eof' })

export {
    GameDataParser
}