☰

Agar Minimap

Minimap for Agar

  1. // ==UserScript==
  2. // @name         Agar Minimap
  3. // @namespace    http://your.homepage/
  4. // @version      0.1
  5. // @description  Minimap for Agar
  6. // @author       agar_cheats
  7. // @match        http://agar.io/
  8. // @require      https://code.jquery.com/jquery-latest.js
  9. // @run-at       document-start
  10. // @grant        none
  11. // ==/UserScript==
  12.  
  13. var observer = new MutationObserver(function(mutations) {
  14.     for (var i = 0; i < mutations.length; i++) {
  15.         if (/^http:\/\/agar\.io\/main_out\.js/.test(mutations[i].addedNodes[0].src)) {
  16.             var scriptNode = mutations[i].addedNodes[0];
  17.             httpRequest(scriptNode.src, handleResponse);
  18.             try{
  19.                 document.head.removeChild(scriptNode);
  20.             }catch(e){}
  21.             observer.disconnect();
  22.             break;
  23.         }
  24.     }    
  25. });
  26. observer.observe(document.head, {childList: true});
  27.  
  28. function httpRequest(source, callBack) {
  29.     var request = new XMLHttpRequest();
  30.     request.onload = function() {
  31.         callBack(this.responseText);
  32.     };
  33.     request.onerror = function() {
  34.         console.log("Response was null");
  35.     };
  36.     request.open("get", source, true);
  37.     request.send();
  38. }
  39.  
  40. function insertScript(script) {
  41.     if (typeof jQuery === "undefined") {
  42.         return setTimeout(insertScript, 0, script);
  43.     }
  44.     var scriptNode = document.createElement("script");
  45.     scriptNode.innerHTML = script;
  46.     document.head.appendChild(scriptNode);
  47. }
  48.  
  49. function handleResponse(script) {
  50.     script = script.replace(/(\r\n|\n|\r)/gm,"");
  51.     script = addHooks(script);
  52.     insertScript(script);
  53. }
  54.  
  55. function addHooks(script) {
  56.     var match = script.match(/1==(\w+)\.length&&\(/);
  57.     var cells = match[1];
  58.     match = script.match(/\w+\.width&&(\w+)\.drawImage\(\w+,\w+-\w+\.width-10,10\);/);
  59.     split = script.split(match[0]);
  60.     return split[0]+match[0]+'Draw('+match[1]+','+cells+');'+split[1];
  61. }
  62.  
  63. function CenterOfMass(cells, prop){
  64.     var n = 0;
  65.     var d = 0;
  66.     for (var i in cells){
  67.         n += cells[i].size*cells[i].size * cells[i][prop];
  68.         d += cells[i].size*cells[i].size;
  69.     }
  70.     return n/d;
  71. }
  72.  
  73. var map = null;
  74. var last = {'x':0, 'y':0, 'color':'#000000', 'size':200};
  75.  
  76. window.Draw = function(oc, cells) {
  77.     var client_width = window.innerWidth, client_height = window.innerHeight;
  78.     var board_size = 11180;
  79.     
  80.     map && oc.drawImage(map, client_width-map.width-10, client_height-map.height-10);
  81.     map || (map = document.createElement("canvas"));
  82.     var c = Math.min(150, .3 * client_height, .3 * client_width) / board_size;
  83.     map.width = board_size * c;
  84.     map.height = board_size * c;
  85.  
  86.     mc = map.getContext("2d");
  87.     mc.scale(c, c);
  88.     mc.globalAlpha = .2;
  89.     mc.fillStyle = "#000000";
  90.     mc.fillRect(0, 0, board_size, board_size);
  91.     mc.globalAlpha = .4;
  92.     mc.lineWidth = 200;
  93.     mc.strokeStyle = "#000000";
  94.     mc.strokeRect(0, 0, board_size, board_size);
  95.     if (cells && cells[0]){
  96.         last.x = CenterOfMass(cells,'x');
  97.         last.y = CenterOfMass(cells,'y');
  98.         last.size = 200;
  99.         last.color = cells[0].color;
  100.     }
  101.     mc.beginPath();
  102.     mc.arc(last.x, last.y, last.size, 0, 2 * Math.PI, false);
  103.     mc.globalAlpha = .8;
  104.     mc.fillStyle = last.color;
  105.     mc.fill();
  106.     mc.lineWidth = 70;
  107.     mc.stroke();
  108. }