[GREENFOOT-806] Dragging overlapping actors drags the bottom one, not the top
In Greenfoot, if you have multiple actors overlapping (e.g. like in Wombats), dragging the actors results in dragging the bottom-most one, which is a bit surprising, and a change in behaviour from Greenfoot 3.1.0. We should drag the top-one instead.
Note: I think this just needs a change in PickActorHelper, to use the last actor in the overlapping array rather than first.
- Issue type: Bug
- Priority: Medium
- Fix versions: 3.5.2