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server.js
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server.js
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// run babel app/assets/frontend/main.jsx --presets es2015,react
// - /app
// - /app/main.js - Entry point for your app
// - /public
// - /public/index.html
// - /server
// - /server/bundle.js - Our workflow code
// - server.js - Express and proxies
// - webpack.config.js
// - webpack.production.config.js
// - package.json - Deployment and project configuration
var http = require('http');
const express = require('express');
const webpack = require('webpack');
const webpackDevMiddleware = require('webpack-dev-middleware');
const webpackHotMiddleware = require('webpack-hot-middleware');
const config = require('./webpack.config.js');
const isDeveloping = process.env.NODE_ENV !== 'production';
const port = isDeveloping ? 8080 : process.env.PORT;
var app = express();
var server = http.createServer(app);
var io = require('socket.io').listen(server);
var clients = [];
var host = null;
if (isDeveloping) {
config.devtool = 'eval'; // Speed up incremental builds
config.entry['app'].unshift('webpack-hot-middleware/client?path=http://localhost:8080/__webpack_hmr');
config.output.publicPath = 'http://localhost:8080/dist/';
config.plugins.unshift(new webpack.HotModuleReplacementPlugin());
config.plugins.unshift(new webpack.NoErrorsPlugin());
const compiler = webpack(config);
app.use(webpackDevMiddleware(compiler, {
publicPath: config.output.publicPath,
stats: {
colors: true,
hash: false,
timings: true,
chunks: false,
chunkModules: false,
modules: false
}
}));
app.use(webpackHotMiddleware(compiler, {
hot: true,
historyApiFallback: true
}));
app.use(express.static(__dirname));
} else {
app.use(express.static(__dirname));
}
function getRandomInt(min, max) {
return Math.floor(Math.random() * (max - min + 1) + min);
}
var setHost = function(client) {
console.log('Setting host to player: ' + client.player.id);
host = client;
};
var findNewHost = function() {
if (clients.length > 0) {
var i = getRandomInt(0, clients.length-1);
var client = clients[i];
// Make sure client had time to initialize the player
if (client) {
setHost(client);
console.log('New host: ' + host.player.id);
io.sockets.emit('setHost', {player: host.player});
}
}
};
var getClientHost = function() {
if (!clients.length) { return; }
return clients.reduce(function(previousClient, currentClient) { if (previousClient && previousClient.player.id === host.player.id) { return previousClient; } else if (currentClient.player.id === host.player.id) { return currentClient; }});
};
var findClientBySocket = function(socket) {
if (!clients.length) { return; }
return clients.reduce(function(previousClient, currentClient) { if (previousClient && previousClient.socket === socket) { return previousClient; } else if (currentClient.socket === socket) { return currentClient; }});
};
var addClient = function(client) {
console.log('Adding player: ' + client.player.id);
clients.push(client);
};
var removeClient = function(client) {
console.log('Removing player: ' + client.player.id);
clients.splice(clients.indexOf(client), 1);
};
// Monitor the clients to make sure they are still defined
var monitorHost = function() {
if (host) {
//console.log('Host: ', host.player.id);
} else {
findNewHost();
}
setTimeout(monitorHost, 100);
};
setTimeout(monitorHost, 100);
var parseEvent = function(socket, event) {
if (event.key === 'newPlayer') {
console.log('Handshaking...');
addClient({socket: socket, player: event.info.player});
// If it's the first client or there's no hosts, lets set it as the new host
if (!host) {
setHost(clients[clients.length-1]);
console.log('New host: ' + host.player.id);
}
socket.emit('setHost', {player: host.player});
} else {
//socket.broadcast.emit(event.key, event.info);
}
};
io.sockets.on('connection', function(socket) {
console.log('New connection.. waiting for handshake');
// TODO: give them 10 seconds to identify as a newPlayer, or cut them off
socket.on('events', function(data) {
//console.log('Incoming events: ' + data);
data = JSON.parse(data);
data.events.forEach(function(event) { parseEvent(socket, event); });
socket.broadcast.emit('events', data);
});
socket.on('disconnect', function() {
var client = findClientBySocket(socket);
if (!client) { return; }
removeClient(client);
console.log('player left', client.player.id);
// If this client was the host,
// and there's at least one more client connected,
// lets choose a new random host,
// and broadcast it to everybody
if (client.player.id === host.player.id) {
host = null;
findNewHost();
}
io.sockets.emit('removePlayer', {player: client.player});
});
});
monitorHost();
server.listen(port, '0.0.0.0', function onStart(err) {
if (err) {
console.log(err);
}
console.info('==> Listening on port %s. Open up http://0.0.0.0:%s/ in your browser.', port, port);
});