On-screen control for touch screens

[bfirsh]

Replacing https://github.com/bfirsh/jsnes/issues/10 and an implementation in https://github.com/bfirsh/jsnes/pull/20 .

Ideally we'd find something that both does an on-screen controller and supports the gamepad API, so we can hit #19 too.

[htv04]

Any updates for this? WebNES is pretty much dead and unless it's fixed, this is the only good way to play NES games on mobile devices (primarily iOS).

Would it also be possible to get sound working on iOS?

[subnetpie]

Here is a iPhone IOS safari centric toying around with JSNES.

https://codepen.io/Subnetpie/pen/LYPaGXy

[quinton-ashley]

@subnetpie wow that looks great!