I know this is an older behaviour, but I think it's really promising for my game. I've come across a problem though.
When my spaceship moves, I actually want the background to move, not the ship itself (the ships stays at the centre of the screen and the background objects move instead, to give the illusion of movement). This is fairly easy to do with normal movement - I just put all the objects into a family and move them along the angle of the ship. With the spaceship behaviour, I need to move them along the movingangle, but there's a problem.
The moving angle is mirrored when you move to the right or left (right gives 180 degrees, left gives 0 degrees) but it's not mirrored when you move upwards or downwards (straight up is -90 or 270 degrees, straight down is 90 degrees). These are the same as the standard directions. So it's mirrored along the horizontal but not mirrored along the vertical. I have no idea how to translate that to my background objects.
Is this a bug or is it supposed to behave like this?