Bounding box is wrong for window/game object factor != 1

[bil-bas]

1. shown wrong position (in :debug mode)
2. need to scale it by 1/factor or they are wrong sizes

Fix is either to scale x & y (* factor) when displayed and scale w/h (/factor) for collisions.

[bil-bas]

Ah, this is caused by using retrofication. Sorry, I didn't realise. If objects have "trait :retrofy" and a factor != 1, then the boxes are wrongly calculated.

[bil-bas]

Ah, I used a workaround to make this work though, which was

trait :bounding_box, :debug => true, :scale =>  0.25 # where factor was 4

The boxes were still drawn in the incorrect positions but their interactions were then correct (that is, they collided correctly).