You can get from Wolf Village to the Physics Department (Riddick Hall) by walking.  It is about a 20 minute walk through the campus.  Here is the path as seen in Google Maps:

Walking Path from Wolf Village to Physics Department (Riddick Hall)

You can also ride the free NC State University campus bus #7 (Wolflink Shuttle) to go between Wolf Village and the Physics Department.  The schedule is for this bus is as follows:

• 7:28 am – 6:14 pm (every 24 min.)

After those hours the Werewolf Night Service is available:

• Mon. – Thurs.
  6:15 pm- 11:27 pm (every 35 min.)
• Fri.
  6:15 pm- 9:42 pm (every 35 min.)

The campus bus summer schedule can be found here:

Free NC State Wolfline Bus Routes and Schedules

The bus routes #7, #11, and Werewolf Night Service are the ones which serve Wolf Village.