gistfile1.txt

var blocks = new Object()

/////////////
// Server //
///////////

var minecraftdata = require("minecraft-data")("1.8.9")
var socketio = require("socket.io")()
var yargs = require("yargs")

socketio.on("connection", function(socket) {
    console.log("Established a connection.")

    for(var key in blocks) {
        socket.emit("voxel", {
            position: blocks[key].position,
            name: blocks[key].name,
        })
    }
})

var SERVER_PORT = yargs.argv.sockets || 3000
socketio.listen(SERVER_PORT)
console.log("Broadcasting voxels on " + SERVER_PORT + ".")

////////////
// Robot //
//////////

var Mineflayer = require("mineflayer")

var MINECRAFT_PORT = yargs.argv.minecraft || 25565

var bot = Mineflayer.createBot({
    username: "cartographer",
    host: "localhost",
    port: MINECRAFT_PORT,
})

bot.on("blockUpdate", function(oldblock, block) {

    // for debug
    block.position.x -= 256
    block.position.y -= 95
    block.position.z -= 256

    var key = pos(block.position)
    console.log("[" + key + "] " + block.name)
    if(block.name == "air") {
        delete blocks[key]
    } else {
        blocks[key] = {
            position: block.position,
            name: block.name,
        }
    }
    socketio.sockets.emit("voxel", {
        position: block.position,
        name: block.name,
    })
})

bot.on("error", function(error) {
    require("fs").appendFile("error.log", "[" + Date.now() + "] " + error + "\n")
})

function pos(position) {
    return position.x + "x" + position.y + "x" + position.z
}