Gui in 3D Demo - error when using mobile/touch

[shrewdlogarithm]

I'm using this excelllent demo as a framework for a mobile/desktop game and it's working fine on desktop but there's an issue on mobile...

The script uses "global_position" for the Event (Mouse or Touch) - but Touch events don't have a global_position attribute so it fails in that situation...

I'll try to fix this myself and update if I do but I thought it was worth mentioning...