node-gamedig/protocols/ase.js

const Core = require('./core');

class Ase extends Core {
    async run(state) {
        const buffer = await this.udpSend('s',(buffer) => {
            const reader = this.reader(buffer);
            const header = reader.string({length: 4});
            if (header === 'EYE1') return reader.rest();
        });

        const reader = this.reader(buffer);
        state.raw.gamename = this.readString(reader);
        state.gamePort = parseInt(this.readString(reader));
        state.name = this.readString(reader);
        state.raw.gametype = this.readString(reader);
        state.map = this.readString(reader);
        state.raw.version = this.readString(reader);
        state.password = this.readString(reader) === '1';
        state.raw.numplayers = parseInt(this.readString(reader));
        state.maxplayers = parseInt(this.readString(reader));

        while(!reader.done()) {
            const key = this.readString(reader);
            if(!key) break;
            const value = this.readString(reader);
            state.raw[key] = value;
        }

        while(!reader.done()) {
            const flags = reader.uint(1);
            const player = {};
            if(flags & 1) player.name = this.readString(reader);
            if(flags & 2) player.team = this.readString(reader);
            if(flags & 4) player.skin = this.readString(reader);
            if(flags & 8) player.score = parseInt(this.readString(reader));
            if(flags & 16) player.ping = parseInt(this.readString(reader));
            if(flags & 32) player.time = parseInt(this.readString(reader));
            state.players.push(player);
        }
    }

    readString(reader) {
        const len = reader.uint(1);
        return reader.string({length:len-1});
    }
}

module.exports = Ase;