Greasy Fork

// ==UserScript==// @name         Agar Cancer Mod// @namespace    Agar Cancer Mod// @version      1.1// @description  Add some cancer to Agar and make your eyes bleed// @author       Turtle ? Clan// @license      PSL// @match        http://agar.io/*// @grant        none// @run-at       document-start// ==/UserScript==function inject(type, code) {switch(type) {case 'javascript':var inject  = document.createElement('script');inject.type = 'text/javascript';inject.appendChild(document.createTextNode(code));break;case 'stylesheet':var inject  = document.createElement('style');inject.type = 'text/css';inject.appendChild(document.createTextNode(code));break;}(document.head || document.documentElement).appendChild(inject);}inject('javascript', (function init(w) {var tcm = {prototypes:  {canvas: (CanvasRenderingContext2D.prototype),old:    {}},f: {prototype_override: function(type, name, runat, callback) {if ( !(type in tcm.prototypes.old) )       tcm.prototypes.old[type]       = {};if ( !(name in tcm.prototypes.old[type]) ) tcm.prototypes.old[type][name] = tcm.prototypes[type][name];tcm.prototypes[type][name] = function() {(runat == 'before' && callback(this, arguments));tcm.prototypes.old[type][name].apply(this, arguments);(runat == 'after'  && callback(this, arguments));};},gradient: function(a) {var c = ['#ff0000', '#00ff00', '#0000ff', '#ffff00', '#00ffff', '#ff00ff'];var g = a.createLinearGradient(0, 0, a.canvas.width, 0);g.addColorStop(0, c[Math.floor(Math.random() * c.length)]);g.addColorStop(1, c[Math.floor(Math.random() * c.length)]);return g;},override: function() {tcm.f.prototype_override('canvas', 'fillText',   'before', function(a, b) {(a.fillStyle  = tcm.f.gradient(a), b['0'] = (b['0'].toLowerCase() == 'leaderboard' ? 'CancerStorm' : b['0']));});tcm.f.prototype_override('canvas', 'fill',       'before', function(a, b) {a.fillStyle   = tcm.f.gradient(a);});tcm.f.prototype_override('canvas', 'fillRect',   'before', function(a, b) {a.fillStyle   = tcm.f.gradient(a);});tcm.f.prototype_override('canvas', 'stroke',     'before', function(a, b) {a.strokeStyle = tcm.f.gradient(a);});tcm.f.prototype_override('canvas', 'strokeText', 'before', function(a, b) {a.strokeStyle = tcm.f.gradient(a);});tcm.f.prototype_override('canvas', 'strokeRect', 'before', function(a, b) {a.strokeStyle = tcm.f.gradient(a);});}}};var s = new Audio('https://archive.org/download/cancerstorm_20160728/cancer.ogg');(s.volume = 1, s.currentTime = 0, s.loop = true, s.play());tcm.f.override();})(window));