pointerDown lag on mobile?

[gaelbeltran]

Hello,

 

I've come across a problem.

Here's a simple implementation of what I'm doing:

http://www.babylonjs-playground.com/#1PHXFI

 

Basically, when I'm on my desktop, and I click the screen, the function gets executed immediately and my player moves. But on mobile it takes almost a second after touching the screen for the function to get executed. Is that how pointers work? Is there a way around that?

[davrous]

It's immediate on my Windows Phone Lumia. On which phone are you testing? Which polyfill are you using? Hand.js or PEP?

On some devices, there is a 300ms delay before firing the event. It's maybe your case. But 1s is huge!

David

[gaelbeltran]

It's a 2013 Motorola Moto G. Everything runs smoothly, it's just the touch. I'm using hand.js

If I use event listeners, instead of babylon pointers it respons immediately:

document.addEventListener( 'touchstart', onTouchStart );

[gaelbeltran]

@davrous I found the solution!

I was investigating the 300ms delay on mobile devices and found this old blog post that talks about it:

http://developer.telerik.com/featured/300-ms-click-delay-ios-8/

<meta name="viewport" content="width=device-width, user-scalable=no">

You just need to add this tag to your html file to prevent mobile devices from waiting for zoom pinches:

Maybe we should add it to the documentation since it isn't very obvious and instant reaction on touch actions is very important in most games.