I've done this in bb2, but it doesn't seem to be behaving the same in bb1... If I select the checkpoint action and edit then the default animation and then edit the image and change the cookie to 0 opacity, it loses it's hitbox... what am I doing wrong to make my checkpoint invisible in the game field but have a hitbox in debug?
That's because the collision shape is still there. It's not the image, but the collision shape that casts shadows. The only workaround is to not place lights close to the checkpoints.