Duties examlpe

wbot.js

var mineflayer = require('mineflayer');
var navigatePlugin = require('mineflayer-navigate')(mineflayer);
var blockfinderPlugin = require('mineflayer-blockfinder')(mineflayer);
var scaffoldPlugin = require('mineflayer-scaffold')(mineflayer);

var Duties = require('duties');

var BaseTask = function* BaseTask($) {
    while(true) {
        setTimeout($.resume, 500);
        yield $.suspend();
    }
};

var LumberjackTask = function* LumberjackTask($) {
    while(true) {
        var block = bot.findBlockSync({
            point: bot.entity.position,
            matching: [5, 17],
            maxDistance: 256,
            count: 1
        })[0];
        yield $.add(GotoTreeTask, block);
    }
};

var GotoTreeTask = function* GotoTreeTask($, block) {
    var pos = block.position;
    bot.scaffold.to(pos, $.resume);
    yield $.suspend();
};

var duties = new Duties();
duties.add(BaseTask);
duties.start();

var bot = mineflayer.createBot({
    host: 'localhost',
    port: 50000,
    username: 'Woodhouse'
});
navigatePlugin(bot);
blockfinderPlugin(bot);
scaffoldPlugin(bot);

bot.on('chat', function(username, message) {
    if(message == 'start') {
        duties.add(LumberjackTask);
        bot.chat('Starting sir.');
    }
    if(message == 'stop') {
        duties.stop();
        bot.chat('Stopping sir.');
    }
});

// bot.navigate.on('pathFound', function (path) {
//   bot.chat("found path. I can get there in " + path.length + " moves.");
// });
// bot.navigate.on('cannotFind', function (closestPath) {
//   bot.chat("unable to find path. getting as close as possible");
//   bot.navigate.walk(closestPath);
// });
// bot.navigate.on('arrived', function () {
//   bot.chat("I have arrived");
// });
// bot.navigate.on('interrupted', function() {
//   bot.chat("stopping");
// });