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yobotcontrols.html
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yobotcontrols.html
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<!DOCTYPE html>
<html>
<head>
<title> MQTT Publish Message Yo!Bot</title>
</head>
<style>
#arrows { text-align: justify; -ms-text-justify: distribute-all-lines; text-justify: distribute-all-lines; }
#arrows > div { border: thin red solid; padding: 7px; font-size:80px; curs vertical-align: top; display: inline-block; *display: inline; zoom: 1; }
#arrows:after { content: ''; width: 100%; display: inline-block; font-size: 0; line-height: 0; vertical-align: top }
div#colourfoot { position: absolute; bottom: 0; left: 0; right: 0; height: 25%; background-color: red; padding: 0; margin: 0}
div#colourfoot div { width:24%; height: 90%; background-color: white; display: inline-block; border:0; margin:0; padding: 0 }
</style>
<script src="https://cdnjs.cloudflare.com/ajax/libs/paho-mqtt/1.0.1/mqttws31.js" type="text/javascript"></script>
<script>
// Define some MQTT variables
var client = null;
var wheelietopic = "miniwheels2/wheels";
var defaultwebsocketaddr = "test.mosquitto.org:8080";
//defaultwebsocketaddr = "sensorcity.io:1880";
// keys left:37, up:38, right:30, down:40
var keysheld = { 37:0, 38:0, 39:0, 40:0 }
var directcolour = null;
var timeout = 5000;
function showkeycolour() {
if (directcolour === null) {
for (var i = 37; i <= 40; i++)
document.getElementById("key"+i).style.background = (keysheld[i] ? "pink" : "");
document.getElementById("colourfoot").style["background-color"] = "#"+(keysheld[38] ? "FF" : (keysheld[40] ? "00" : "80")) + "80" + (keysheld[37] ? "FF" : (keysheld[39] ? "00" : "80"));
} else {
document.getElementById("colourfoot").style["background-color"] = directcolour;
}
for (var i = 37; i <= 40; i++) {
var e = document.getElementById("s"+(i-36));
if (e !== undefined) {
e.style.background = (keysheld[i] ? "white" : "black");
}
}
}
function keydown(keyCode) {
if ((keyCode >= 37) && (keyCode <= 40) && !keysheld[keyCode]) {
keysheld[keyCode] = 1;
sendcontrol();
}
}
function keyup(keyCode) {
if ((keyCode >= 37) && (keyCode <= 40)) {
keysheld[keyCode] = 0;
sendcontrol();
}
}
function onMessageArrived(msg) {
console.log(msg);
document.getElementById("miniwheels1wheelsrec").textContent = msg.payloadString;
if (msg.payloadString.length <= 1) {
directcolour = null;
} else if (msg.payloadString[0] == "#") {
directcolour = msg.payloadString;
} else {
var mkeysheld = msg.payloadString.split(" ");
for (var i = 37; i <= 40; i++)
keysheld[i] = parseInt(mkeysheld[i-37]);
}
showkeycolour();
}
function sendcontrolInit() {
client.subscribe(wheelietopic);
var msg = new Paho.MQTT.Message("0 0 0 0");
msg.destinationName = wheelietopic;
client.send(msg);
sendcontrol();
}
function sendcontrol() {
if (sendcontrolFtimeout !== null)
clearTimeout(sendcontrolFtimeout);
sendcontrolFtimeout = setTimeout(sendcontrolF, 1);
}
var sendcontrolFtimeout = null;
function sendcontrolF() {
sendcontrolFtimeout = null;
if (client === null) {
var websocketaddr = document.getElementById("mqttwebsocket").value.split(":");
client = new Paho.MQTT.Client(websocketaddr[0], parseInt(websocketaddr[1]), "");
document.getElementById("mqttwebsocket").disabled = true;
client.onMessageArrived = onMessageArrived;
}
showkeycolour();
if (!client.isConnected()) {
client.connect({onSuccess:sendcontrolInit});
return;
}
var msg = [keysheld[37], keysheld[38], keysheld[39], keysheld[40]].join(" ");
var message = new Paho.MQTT.Message(msg);
message.destinationName = wheelietopic;
client.send(message);
sendcontrolFtimeout = setTimeout(sendcontrolF, timeout);
}
window.onload = function() {
document.getElementById("mqttwebsocket").value = defaultwebsocketaddr;
window.onkeydown = function(e) { keydown(e.keyCode); }
window.onkeyup = function(e) { keyup(e.keyCode); }
for (var i = 37; i <= 40; i++) { (function(i) {
document.getElementById("key"+i).addEventListener("pointerdown", function() { console.log("mousedown "+i); keydown(i); });
document.getElementById("key"+i).addEventListener("pointerup", function() { console.log("mouseup "+i); keyup(i); });
})(i)};
}
// wakelock hack from https://stackoverflow.com/questions/11529247/in-html5-how-can-i-keep-an-android-device-s-screen-on
function Utilbase64(mimeType, base64) { return 'data:' + mimeType + ';base64,' + base64; };
var video = document.createElement('video');
video.setAttribute('loop', '');
function addSourceToVideo(element, type, dataURI) { var source = document.createElement('source'); source.src = dataURI; source.type = 'video/' + type; element.appendChild(source); }
addSourceToVideo(video,'webm', Utilbase64('video/webm', 'GkXfo0AgQoaBAUL3gQFC8oEEQvOBCEKCQAR3ZWJtQoeBAkKFgQIYU4BnQI0VSalmQCgq17FAAw9CQE2AQAZ3aGFtbXlXQUAGd2hhbW15RIlACECPQAAAAAAAFlSua0AxrkAu14EBY8WBAZyBACK1nEADdW5khkAFVl9WUDglhohAA1ZQOIOBAeBABrCBCLqBCB9DtnVAIueBAKNAHIEAAIAwAQCdASoIAAgAAUAmJaQAA3AA/vz0AAA='));
addSourceToVideo(video, 'mp4', Utilbase64('video/mp4', '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'));
video.play();
</script>
<body>
<h1>Wheeliephone for Yo!Bot</h1>
MQTT WebSocket: <input type="text" id="mqttwebsocket" value="----"><br><br>
<p><b>Instructions:</b> Click on this page, and <b>then</b> use your computer cursor keys (← → ↑ ↓) to steer the robot that is carrying the phone.</p>
<div id="arrows">
<div id="key37">←</div>
<div id="key38">↑</div>
<div id="key40">↓</div>
<div id="key39">→</div>
</div>
</body>
<hr>
<p>Monitor the messages using the command:</p>
<p><b>mosquitto_sub -h test.mosquitto.org -v -t "miniwheels2/#"</b></p>
<p>Signals on "miniwheels2/wheels": <span id="miniwheels1wheelsrec" style="background:yellow">---</span></p>
<div id="colourfoot">
<div id="s1"></div>
<div id="s2"></div>
<div id="s3"></div>
<div id="s4"></div>
</div>
</html>