I'm using r114 64 bit.
This is a weird one because it only shows up when I use basic touch mode in the Visual Studio simulator. If I use mouse mode, it works fine. I checked on a physical touch device and the problem is also there.
So, if you build the attached file to either html5/Windows 8 and use the result on a touch screen. Swipe the red puck and it should fire off in the direction of the swipe....but sometimes (usually swiping "south east") the puck will reposition itself to the origin and move from there.
Edit: In the full game, I have a green puck on the other side and it works fine in any mode.
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I'd appreciate any help on this. It's the only thing stopping the game being released.
It's a mistake in your events: the 'on touch end' event takes a zero-based index of a touch, but you're passing the touch ID which is an arbitrary number uniquely identifying a touch.
Thanks for the response. I've initiated a new thread: