Integrated David's work into the build

Integrated the pickup functionality to get called within the game.
Required some tinkering to sort out stuff that was set up already (e.g.
the strokeWeight).
Added functionality to move L-R when going home. Added functionality to
make the pickup Y value be random between two bounds.
Added functionality so that the speed of the pickup matches the speed of
the buildings. (And as a result renamed the var to be 'objectSpeed')
Moved the variables into the constants file.
Changed framerate to fix a very very weird bug (talk to me if you are
interested).
Fixed some code formatting.