Add touchstart to enable mobile audio when swiping too

[markknol]

On iOS, if you swipe, for some reason touchend doesn't get triggered. We're building a WebGL game where you needed to perform a swipe movement and sound was only enabled when you actually tapped. Using touchstart seems to fix it. I think it is safe to keep two listeners.

When is the next release planned?

[goldfire]

Thanks! Going to try and get 2.0.5 out today, wanting to get a few more issues fixed in it.

[themoonrat]

I seem to remember that i was ios 9 that broke all this originally. Everyone used touch start, ios 9 came out and required touchend instead.

Clearly touchstart works again now, but is that a short term fix? I seem to remember one of the developers for safari saying it made sense to only unlock on touch end because otherwise, and thinking in terms of horrible adds wanting to play sound, you'd pick up scrolling down a webpage on touchstart when actually a tap with touchend is closer to the meaning of the interaction the developers wanted

[goldfire]

Hmm, that is a good point. Do you know if something like mouseup fires at the end of the swipe?

[goldfire]

Also, I just did some more testing and the touchend event seems to be firing on swipe as long as the swipe ends on the same element that it started on. Is that the behavior that you are seeing?

[themoonrat]

mouse wise, anything other than 'click' i've had issues with at one stage or another.

The touchend event thing... I'm not sure, actually. Not at work to get the devices out to test. What I did was make my opening screen require a successful touchend, just like Howler does. Then, if they tried to swipe, well, they're not getting in until they follow the clear instruction to tap!

[goldfire]

Okay, so I put together this fiddle and tested on an iPhone and the touchend fires at the end of the swipe (at least in iOS 11, haven't tried earlier versions). Is this different from what @markknol was referring to?

https://jsfiddle.net/5Leq0ak3/

I'm going to pull this out for now and get 2.0.5 released, but will put it back in once we've nailed down the correct behavior (sorry about the premature merge).

[markknol]

Ok, but did you test it with sound and did it enable?

[goldfire]

@markknol Good point! I just modified the fiddle to try unlocking the audio and while the touchend event does fire, it doesn't seem to work as you stated. I've added the touchstart back in and it seems to work. I'll go ahead and get this included in 2.0.5 after all.

[markknol]

Thanks! This was exactly my experience too 👍