Very rough hunt

Added elevator ding
Added integer gets and distance calculator to Vector2d
Made "6" levels but it's really just the 2 we have repeated
Update method in level now creates hunt objects and checks for your
proximity to them/whether you got them all.
Render method renders hunt objects, which are different sprites
depending on the level
Big bug where huntedObjs and player, despite having same x and y, are
rendered in different places
Bug where huntedObjs render above everything else