These examples have been created for various courses introducing methods for creating networked experiences with only frontend coding in P5. To work with this code you will need a free PubNub account.
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<!DOCTYPE html>
<html>
<head>
<!--These script tags import P5 functionality-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.10.2/p5.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.10.2/addons/p5.sound.min.js"></script>
<!--These script tags import P5 functionality-->
<!--This script tag imports PubNub functionality-->
<script src="https://cdn.pubnub.com/sdk/javascript/pubnub.4.28.0.js"></script>
<!--This script tag imports PubNub functionality-->
<link rel="stylesheet" type="text/css" href="style.css">
<meta charset="utf-8" />
</head>
<body>
<!--This script tag imports your sketch.js file that contains the actual code and inserts the content into the html page-->
<script src="sketch.js"></script>
<!--This script tag imports your sketch.js file that contains the actual code and inserts the content into the html page-->
</body>
</html>Get your publish and subscribe keys from your account. Define a global variable to hold the PubNub object. Also define the name of a channel to broadcast on within your account. Messages can be sent/received on multiple channels.
let dataServer;
let pubKey = 'insert your pub key';
let subKey = 'insert your sub key';
let channelName = "messageChannel";Within the setup function initialize the connection, subscribe to the channel, and create a listener to run a callback function any time a new message arrives.
function setup()
{
createCanvas(windowWidth,windowHeight)
// initialize pubnub
dataServer = new PubNub(
{
publish_key : pubKey, //get these from the pubnub account online
subscribe_key : subKey,
ssl: true //enables a secure connection.
});
//attach callbacks to the pubnub object to handle messages and connections
dataServer.addListener({ message: readIncoming});
dataServer.subscribe({channels: [channelName]});
}function readIncoming(inMessage) //when new data comes in it triggers this function,
{ // this works becsuse we subscribed to the channel in setup()
// simple error check to match the incoming to the channelName
if(inMessage.channel == channelName)
{
incomingText = inMessage.message.messageText;
}
}function sendTheMessage() {
// Send Data to the server to draw it in all other canvases
dataServer.publish(
{
channel: channelName,
message:
{
who: whoAreYou.value(),
messageText: sendText.value() //get the value from the text box and send it as part of the message
}
});
}