So yeah, Thank you for SetViewZoomMode(1) and ScreenToWorldX() !
I have to re-write my RTS game
"Not Your Space" (for about the 6th time!) and i was trying AppGameKit 2 .
My first problem was zooming the screen and keeping the camera centered. I tried some fiddly math, spent about 15 minutes, but couldn't get it right.
Then i searched the command list. Lo and behold, SetViewZoomMode(). Worked like a charm.
Then i thought, ok, problem 1 solved, now onto problem 2: getting the mouse screen position to correspond to the actual sprite positions, once the view has been zoomed or scrolled.
Again with the fiddly math failure. But after my previous success, i wasted only 10 minutes before searching the commands...and...
ScreenToWorldX() works like a charm.
So thank you AGK2 !