split UV into 4 vect 2's so it can be used to do sprite animations / scale / rotate etc

I can do sprite animations in upbge using

object color===Split rgb====add red channel to u------texture------material color-----output

UV===split rgb-------------------R-(connects to add node)

I purpose we have a alternate texture UV system added

Alt-UV-node

uv1

uv2

uv3

uv4 *

** uv4 can return -1 ,-1 if there is no 4th uv

and add a alt texture node accepts uv1,uv2,uv3,uv4 etc

Thanks!