Although this layer stuff may have its uses (I've not tried them yet), you can use the old Blitz3D way of checking two images - ImagesCollide() and ImagesCollide2(). The first is the same as Blitz3D, the second has additional parameters for rotation and scale.
These may be slower than using layers, but I haven't checked. Perhaps someone else has and can enlighten the rest of us.
These may be slower than using layers, but I haven't checked. Perhaps someone else has and can enlighten the rest of us.