cellsh-friend-map.js

// ==UserScript==
// @name         cell.sh friend map
// @namespace    http://tampermonkey.net/
// @version      0.1
// @require      https://cdn.socket.io/socket.io-1.4.5.js
// @description  try to take over the world!
// @author       Jake Mayeux
// @match        http://cell.sh/*
// @run-at       document-end
// ==/UserScript==
const SERVER = '129.10.33.206:3000'
var socket = io(SERVER)

CH.data = new Array()
CH.players = new Array()
window.asdf = 'asdf'

socket.on('data', function(data){
   if(!CH.players.includes(data.id)){
	  CH.players.push(data.id)  
   }
   CH.data[data.id] = data
})

document.asdf = document.createElement

document.createElement = function(str){
   let ret = document.asdf(str);	
   if(str == 'canvas'){
	  ret.qwer = ret.getContext
	  ret.getContext = function(){
		 let c = ret.qwer('2d')
		 c.a = c.arc
		 c.arc = function(a,b,c,d,e,f){
			window.posX = a
			window.posY = b
			socket.emit('pos',{x:a,y:b})
			for(i of CH.players){
			   let asdfx = CH.data[i].x
			   let asdfy = CH.data[i].y
			   this.beginPath()
			   this.a(asdfx,asdfy,c,d,e,f)
			   this.fillStyle = '#00ff00'
			   this.fill()
			}
			this.beginPath()
			this.a(a,b,c,d,e,f)
		 }
		 return c
	  }
   }
   return ret
}