Agar Leaderboard

const StringDecoder = require('string_decoder').StringDecoder;
const decoder = new StringDecoder('utf8');

var x = [49,     // opcode
    10,0,0,0,    // cnt

    0,0,0,0,     // Highlight 1
    77,69, 32,70, 85,67, 75,32, 73,83, 76,65, 77,0, // NAME 1 (length=14)
    0,0,0,0,     // HL 2
    0,           // NAME 2  (length=0)
    0,0,0,0,     // HL 3
    97, 100,101, 108,105, 110,0, // NAME 3  (length=7)
    0,0,0,0,     // HL 4
    115,116,97,110,100,97,110,50,0, // NAME 4 (length=9)
    0,0,0,0,     // HL 5
    105,32,103,105,118,101,32,121,111,117,32,109,97,115,115,0, // NAME 5  (length=16)
    0,0,0,0,     // HL 6
    76,79,79,75,32,73,39,77,32,70,73,82,83,84,0, // NAME 6 (length=15)
    0,0,0,0,     // HL 7
    0, // NAME 7
    0,0,0,0,     // HL 8
    0, // NAME 8
    0,0,0,0,     // HL 9
    84,85,82,75,83,0, // NAME 9
    0,0,0,0,     // HL 10
    110,97,115,97,0 // NAME 10
];

var u8a = new Uint8Array(x);
var dv = new DataView(u8a.buffer);

console.log('Packet Length : ' + u8a.length);
var offset = 0;
var opcode = dv.getUint8(offset);
offset += 1;
console.log('opcode ' + opcode);
var cnt = dv.getUint32(offset, true);
offset += 4;
console.log('Count : ' + cnt);

for (var i=0; i<cnt; i++) { // iterate through each (Highlight,Nick) structure
    var highlight = dv.getUint32(offset, true);
    console.log('Highlight : ' + (highlight !== 0));
    offset += 4;
    // looking for the null terminated str
    var j=0;
    while (dv.getUint8(offset+j) != 0) {j++;}
    console.log('NAME' + (i+1) + ' Length = ' + j);
    var nickBuf = new Buffer(u8a.subarray(offset, offset+j));
    console.log('NAME' + (i+1) + ' : ' + decoder.write(nickBuf));
    offset +=j+1;
}

/* OUTPUT :
 /usr/local/bin/node --debug-brk=46792 sang.js
 Debugger listening on port 46792
 Packet Length : 120
 opcode 49
 Count : 10
 Highlight : false
 NAME1 Length = 13
 NAME1 : ME FUCK ISLAM
 Highlight : false
 NAME2 Length = 0
 NAME2 :
 Highlight : false
 NAME3 Length = 6
 NAME3 : adelin
 Highlight : false
 NAME4 Length = 8
 NAME4 : standan2
 Highlight : false
 NAME5 Length = 15
 NAME5 : i give you mass
 Highlight : false
 NAME6 Length = 14
 NAME6 : LOOK I'M FIRST
 Highlight : false
 NAME7 Length = 0
 NAME7 :
 Highlight : false
 NAME8 Length = 0
 NAME8 :
 Highlight : false
 NAME9 Length = 5
 NAME9 : TURKS
 Highlight : false
 NAME10 Length = 4
 NAME10 : nasa

 */