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Joystick Controls with ArcRotate Camera


hen
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Hi Hen, good to see you again.  I'm not qualified to answer this, but this will serve to bump your topic upward a bit.

So, IN MY OPINION, the separation borders between device, user agent (browser), JS, and BabylonJS framework... become very important here.  I think that the issue of touchscreen being disabled after a joystick driver/redirector loads-in... happens on a DEVICE side of the border.  In other words, you will need to investigate why the device is doing that, and a fix/work-around might be rough water (difficult).  Your primary objective...  get your joystick (and/or touchscreen) to produce values in JS.  No need to attach a scene or a framework... just get your joystick/touchscreen event listeners activated in a simple JS demo.  Later, when all your event listeners are working per your liking... THEN hooking an arc rotate camera to those eventHandlers... might be easy.

There is a "library" called Gampad.js, but, according to its docs, it doesn't work with Internet Explorer, Opera, or Safari.  Crap, eh?

Let's take a browse to the W3C Gampad thing.  May I direct your attention to Section 3. - Scope area.  This area of the spec... speaks volumes (says a lot).  Mainly, it talks about NARROWING the scope... and why this spec is called "gamepad" and not "generalExternalController".  By the "feel" of that information in the Scope section, one might suspect that we will eventually see a W3C spec for "Joystick", eh?  http://h4ck3r.net/joystick/joystick.html

There it is, but we're not AT the W3C website anymore.  So let's hit that "latest public version" on the W3C site... http://www.w3.org/TR/joystick/

Oooh, flopped on its butt.  Ok, let's search the W3C site for "joystick".  https://www.google.com/search?q=site:w3.org+joystick

Got some returns, but the dates are OLD.  Quite discouraging, eh?  But BabylonJS DOES have gamepad features.  http://doc.babylonjs.com/search?q=gamepad 

So, once you solve your DEVICE-level joystick-disables-touchscreen issue, there appears to be some tools/code here to play-with.

When you get the issues solved on the other levels, then you SHOULD be able to operate one of our GamePad cameras with a joystick.  Get THAT far, if you please.  AFTER you have your joystick able to operate the GamepadCamera... that's when you/we will "borrow" some code from https://github.com/BabylonJS/Babylon.js/blob/master/src/Cameras/babylon.gamepadCamera.js and maybe extend ArcRotateCamera instead of FreeCamera.   In other words, you/we will modify gamepadCamera and make our own joystickArcCamera v1.0  :)

Gamepads and joysticks... it is all quite new to browsers, still.  The working draft date on the W3C Gamepad spec... is Dec 2015!  It's hot hot hot.  Gamepads and joysticks generally send the same values, so, joysticking an arcRotateCamera is likely possible.  It might be a hard-to-navigate trail to success, depending upon your expertise.  I believe Davrous wrote much of our GamePad camera stuff, so maybe he will visit and say wiser things than I can.  As I said before, I am not qualified to comment on this, but, I'm glad and honored to watch, listen, and learn.  :) 

Here's an interesting forum thread:  http://www.html5gamedevs.com/topic/9545-how-to-use-the-gamepad/

More comments welcome, of course.

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