Hi, making small simulator with "2d top down view" country map and sea.

How is it best to make that. I have very big picture 1X1 meter and want to scroll and zoom with 5 levels from max to min with 3 middle stages. with mouse scroll.

ok half way there found this.

Scaling the Panel

{
MainMap_pan.scale_x -= (mickey.z * 0.005 * time_step);
MainMap_pan.scale_y = MainMap_pan.scale_x;
wait(1);
}

But how to keep center of the panel on same spot

if mouse tick gives 120 in change and i use *0,005 its giving 0,6 so i need when zoom in move map new pos =(Oldimage.size - newImageSize) or how is that done?