node-gamedig/protocols/samp.js

91 lines
2.5 KiB
JavaScript
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2014-03-29 15:34:12 +01:00
var async = require('async');
module.exports = require('./core').extend({
run: function(state) {
var self = this;
var len;
async.series([
function(c) {
self.sendPacket('i',function(reader) {
state.password = !!reader.uint(1);
state.raw.numplayers = reader.uint(2);
state.maxplayers = reader.uint(2);
state.name = self.readString(reader,4);
state.raw.gamemode = self.readString(reader,4);
self.map = self.readString(reader,4);
c();
});
},
function(c) {
self.sendPacket('r',function(reader) {
var ruleCount = reader.uint(2);
state.raw.rules = {};
for(var i = 0; i < ruleCount; i++) {
var key = self.readString(reader,1);
var value = self.readString(reader,1);
state.raw.rules[key] = value;
}
if('mapname' in state.raw.rules)
state.map = state.raw.rules.mapname;
c();
});
},
function(c) {
self.sendPacket('d',function(reader) {
var playerCount = reader.uint(2);
for(var i = 0; i < playerCount; i++) {
var player = {};
player.id = reader.uint(1);
player.name = self.readString(reader,1);
player.score = reader.int(4);
player.ping = reader.uint(4);
state.players.push(player);
}
c();
},function() {
for(var i = 0; i < state.raw.numplayers; i++) {
state.players.push({});
}
});
},
function(c) {
self.finish(state);
}
]);
},
readString: function(reader,lenBytes) {
var length = reader.uint(lenBytes);
if(!length) return '';
var string = reader.string({length:length});
return string;
},
sendPacket: function(type,onresponse,ontimeout) {
var self = this;
var outbuffer = new Buffer(11);
outbuffer.writeUInt32BE(0x53414D50,0);
var ipSplit = self.options.address.split('.');
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(self.options.port,8);
outbuffer.writeUInt8(type.charCodeAt(0),10);
this.udpSend(outbuffer,function(buffer) {
var reader = self.reader(buffer);
for(var i = 0; i < outbuffer.length; i++) {
if(outbuffer.readUInt8(i) !== reader.uint(1)) return;
}
onresponse(reader);
return true;
},function() {
if(ontimeout) {
ontimeout();
return true;
}
});
}
});