Agar.io Reverse Engineering

Support discontinued, it is not working now

Author:

• DnAp
• TheZero

Feature

• Reverse engineering main_out.js with user frendly variables names
• Greater field of view - zoom rate from 10 to 10.35
• Depict circle around big points
• Show mass for all points
• Color enemy

Color enemy

• Green - small food
• Sea green - food
• Blue - friend, safe mass
• Red - predator

To start

Copy files to your server and open http://localhost/index.html

Code Logic - Websocket API

[termnology: B=Byte, I=int, U=uint, F=float]

Data sended

• send 5B (1B=255 + 4B=1) when opened connection
• send name: 0(1B) + characters ascii(2B each, to support other languages)
• send actions: 1B number(command)
  • 1 : spectate
  • 17: space key (split)
  • 18: Q key (apparently don't work)
  • 19: Q keyup, close game (apparently don't work)
  • 21: W key (eject mass)
• send normalized location: 21B
  • 16(1BI) + xPos(8BF) + yPos(8BF) + 0(4BI)

Data Received

• 16: main loop which called very often with updated locations of everyone. following data format.

  • 2BU: number points to destroy. probably first eating second.
  • info of above points: id of first(4BU) + id of 2nd(4BU)
  • id of a point(4BU)+x(4BF)+y(4BF)+size(4BF)+color[R(1BU)+G(1BU)+B(1BU)]+
  • isVirus(1BU)+[padding=f(isVirus)]+name(2BU,till 0)+2B unused+
  • numUpdateCodes(4BU)+list of ids(4BU) probably to destroy

• 17: returns normalization params, px, py and ratio

  • this message never came

• 20: resets points.

  • this message never came

• 32: informs the client which cell belongs to the player.

  • sent every time you split or respawn.

• 48: elements with name.

  • probably old leaderboard method. also doesnt come here

• 49: leaderboard

  • name and ids list sorted by rank (top 10)

• 64: size of canvas

  • comes when select region. fixed for all regions