HappyFunTimes Docs

Making Controllers

Controllers are the part that runs on the phone as in the phone becomes a game controller.

Controllers are just webpages that appear on the phone. HappyFunTimes provides the connection between the phone and the game but it's up to you to make HTML, CSS, JavaScript, Images and whatever else you need for your controllers.

The easist path is to choose one of the existing games and start modifying.

For Unity games the files for samples controllers exist in Assets/WebPlayerTemplates/HappyFunTimes/controllers. For each controller the relevant files are:

controller.html           // The HTML for your controller
css/controller.css        // The CSS for your controller
scripts/controller.js     // The main script for your controller

Edit or better copy those 3 files to create your controller. If you need other JavaScript libraries or other assets (image, sounds) put them somewhere under Assets/WebPlayerTemplates/HappyFunTimes or a deeper like Assets/WebPlayerTemplates/HappyFunTimes/images and/or Assets/WebPlayerTemplates/HappyFunTimes/mygame/sounds


The minimum content of controller.html is

<script src="/hft/hft.js"></script>

Everything else is option. You can put your own script directly in the HTML or put outside with another script tag. All of the sample controller load at least 2 more scripts

<script src="/sample-ui/sample-ui.js"></script>
<script src="scripts/controller.js"></script>

Some load more for 3rdparty libraries etc...


The minimum contents of a controller.js (or wherever you put your JavaScript) is

var client = new hft.GameClient();

That's it. If you'd like to use the sample ui then you'd also add something like

var commonUI = sampleUI.commonUI;
var input = sampleUI.input;
var misc = sampleUI.misc;
var mobileHacks = sampleUI.mobileHacks;
var strings = sampleUI.strings;
var touch = sampleUI.touch;

var globals = {
  debug: false,
  //orientation: "landscape-primary",

var client = new hft.GameClient();   // -------- NOTICE LINE FROM ABOVE -----------

commonUI.setupStandardControllerUI(client, globals);

If you use the sample-ui put your elements inside the the id="hft-content" div and before the id="hft-menu" div.

<div id="hft-content">

    <!-- your elements go here if you're using the sample-ui -->

    <div id="hft-menu"><img src="/hft/assets/gear-icon.svg"></div>

The rest is up to you. Add HTML elements as you see fit. Read HTML events and call client.sendCmd to pass whatever events you want back to the game. Add listeners with client.addEventListener for any events you want to send from the game back to the controller.

client.sendCmd('foo', { someNumber: 123, someString, "abc", someBool: true});

Will emit a message on the corresponding NetPlayer in the game.

using HappyFunTimes;


class FooMsg {
  public int someNumber;
  public string someString;
  public bool someBool;

private NetPlayer m_netPlayer;

void InitializeNetPlayer(SpawnInfo spawnInfo) {
   // save off the NetPlayer so we can communicate with the phone
   m_netPlayer = spawnInfo.netPlayer;

   // Register a method to call when the phone sends the `foo` message
   m_netPlayer.RegisterCmdHandler<FooMsg>("foo", OnFooMsg);

void OnFooMsg(FooMsg msgData) {
  // do something with the data you sent from the phone
  Debug.Log("someNumber: " + msgData.someNumber);
  Debug.Log("someString: " + msgData.someString);
  Debug.Log("someBool: " + msgData.someBool);

Similary any message sent by the game

class BarMsg {
  BarMsg(string s, bool b, float n) {
    aString = s;
    aBool = b;
    aNumber = n;

  public string aString;
  public bool aBool;
  public flaot aNumber;

m_netPlayer.sendCmd("bar", new BarMsg(("hello", true, 1.23));

Will emit an event back in the controller.

client.addEventListener('bar', handleBar);

function handleBar(data) {
  // should show { aString: "hello", aBool: true, aNumber: 1.23 }

Dealing with different phone sizes

The hardest part of creating a controller is handling CSS and placement across browser versions and devices. For example iOS6.1, iOS7.0, iOS7.1, iOS8.3, iOS9.x all provide a different size usable area in Safari. On top fo that 3.5inch iPhones vs 4inch iPhones and newer provide a different usable area. And finally add Android on top of that and possibly iPad and other tablets and you can see this is the hardest part.

If you design on a iPhone6 plus be sure to test on some smaller phones like an iPhone4s. Keep your controllers simple or look up responsive design. Possibly consider using a CSS framework.


If you happen to be on a Mac the iOS Simulator that comes with XCode is your friend. Also see Chrome's phone emulation mode. Chrome's dev tools can even emulate phone orientation.

Chrome's Remote Debugging and Safari Remote Debugging are super useful. You plug you phone into the computer with a USB cable and you can debug webpages running on your phone from your computer.

More info

For more info see The Basics of HappyFunTimes and Unity