node-gamedig/protocols/samp.js

89 lines
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const async = require('async');
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class Samp extends require('./core') {
run(state) {
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async.series([
(c) => {
this.sendPacket('i',(reader) => {
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state.password = !!reader.uint(1);
state.raw.numplayers = reader.uint(2);
state.maxplayers = reader.uint(2);
state.name = this.readString(reader,4);
state.raw.gamemode = this.readString(reader,4);
this.map = this.readString(reader,4);
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c();
});
},
(c) => {
this.sendPacket('r',(reader) => {
const ruleCount = reader.uint(2);
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state.raw.rules = {};
for(let i = 0; i < ruleCount; i++) {
const key = this.readString(reader,1);
const value = this.readString(reader,1);
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state.raw.rules[key] = value;
}
if('mapname' in state.raw.rules)
state.map = state.raw.rules.mapname;
c();
});
},
(c) => {
this.sendPacket('d',(reader) => {
const playerCount = reader.uint(2);
for(let i = 0; i < playerCount; i++) {
const player = {};
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player.id = reader.uint(1);
player.name = this.readString(reader,1);
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player.score = reader.int(4);
player.ping = reader.uint(4);
state.players.push(player);
}
c();
},() => {
for(let i = 0; i < state.raw.numplayers; i++) {
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state.players.push({});
}
c();
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});
},
(c) => {
this.finish(state);
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}
]);
}
readString(reader,lenBytes) {
const length = reader.uint(lenBytes);
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if(!length) return '';
const string = reader.string({length:length});
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return string;
}
sendPacket(type,onresponse,ontimeout) {
const outbuffer = Buffer.alloc(11);
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outbuffer.writeUInt32BE(0x53414D50,0);
const ipSplit = this.options.address.split('.');
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outbuffer.writeUInt8(parseInt(ipSplit[0]),4);
outbuffer.writeUInt8(parseInt(ipSplit[1]),5);
outbuffer.writeUInt8(parseInt(ipSplit[2]),6);
outbuffer.writeUInt8(parseInt(ipSplit[3]),7);
outbuffer.writeUInt16LE(this.options.port,8);
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outbuffer.writeUInt8(type.charCodeAt(0),10);
this.udpSend(outbuffer,(buffer) => {
const reader = this.reader(buffer);
for(let i = 0; i < outbuffer.length; i++) {
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if(outbuffer.readUInt8(i) !== reader.uint(1)) return;
}
onresponse(reader);
return true;
},() => {
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if(ontimeout) {
ontimeout();
return true;
}
});
}
}
module.exports = Samp;