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server.js
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server.js
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var app = require('http').createServer(),
io = require('socket.io').listen(app),
fs = require('fs'),
port = 8888,
five = require("johnny-five"),
bot, board;
board = new five.Board();
board.on("ready", function() {
bot = new five.Nodebot({
right: 12,
left: 13
});
/*
* Initialize the bot by telling it to stop
*/
bot.stop();
io.sockets.on('connection', function (socket) {
/*
* Stores current direction of the bot to
* calculate the pivoting motion
*/
var currentDirection = null;
console.log("socket connected", socket.id);
/*
* Stop the bot on 'stop' event
*/
socket.on('stop', function () {
console.log("bot:stop");
movements = [];
bot.stop();
});
socket.on('move', function (direction) {
console.log("bot:move:" + direction);
switch (direction) {
/*
* Pivot left if there's an existing direction
*/
case 'left':
if (currentDirection) {
bot.pivot(currentDirection + "-left");
}
break;
/*
* Pivot right if there's an existing direction
*/
case 'right':
if (currentDirection) {
bot.pivot(currentDirection + "-right");
}
break;
/*
* Move forward
*/
case 'fwd':
currentDirection = "forward";
bot.fwd(10);
break;
/*
* Move back
*/
case 'rev':
currentDirection = "reverse";
bot.rev(10);
break;
}
});
});
board.repl.inject({
n: bot
});
});
console.log("listening on port ", port);
app.listen(port);