There's no action to set the axis state of both, x, or y, which makes it exceedingly difficult to make anything that snaps to one axis of movement upon starting but can move in both axes, just not simultaneously. Is this going to be added soon?
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Browsers do not allow that kind of control of the mouse (the OS controls the mouse)... (http://stackoverflow.com/questions/4752501/move-the-mouse-pointer-to-a-specific-position)
This can probably be solved as a movement type by using the custom movement behavior (https://www.scirra.com/manual/92/custom-movement)