Project: zuul-with-doors
Authors: Michael Kolling and David J. Barnes
Modified by: Poul Henriksen (2005)

This project is supplementary material for the book

   Objects First with Java - A Practical Introduction using BlueJ
   Second edition
   David J. Barnes and Michael Kolling
   Pearson Education, 2004
  
This project is a further enhancement of zuul-with-beamer.
This version van now have locked doors which can be unlocked by the correct 
key. This a solution to exercise 7.38

The player can pick up and drop items. 
There is a maximum weight that the player can carry.
If the player eats a magic cookie the maximum weight the player can carry is
increased.
If the user has not reached the Computing Admin. within 6 moves the game is terminated.
The user has a beamer. When you charge a beamer it memorizes the current room. 
When you fire the beamer, it transports you immediately back to the room it was
 charged in.
There are doors between the rooms and some of them are locked. If you are lucky you can
 find a key to unlock a locked door.