Welcome to SWI-Prolog (Version 3.3.0)
Copyright (c) 1993-1999 University of Amsterdam. All rights reserved.

For help, use ?- help(Topic). or ?- apropos(Word).

?- consult('C:\\_Prolog\\dragon.pl').
% C:\_Prolog\dragon.pl compiled 0.00 sec, 14,560 bytes

Yes
?- start.

Enter commands using standard Prolog syntax.
Available commands are:
start.                   -- to start the game.
n.  s.  e.  w.  u.  d.   -- to go in that direction.
take(Object).            -- to pick up an object.
drop(Object).            -- to put down an object.
use(Object).             -- to use an object.
attack.                  -- to attack an enemy.
look.                    -- to look around you again.
instructions.            -- to see this message again.
halt.                    -- to end the game and quit.

You are in a meadow.  To the north is the dark mouth
of a cave; to the south is a small building.  Your
assignment, should you decide to accept it, is to
recover the famed Bar-Abzad ruby and return it to
this meadow.



Yes
?- s.
You are in a small building.  The exit is to the north.
The room is devoid of furniture, and the only feature
seems to be a small door to the east.

There is a flashlight here.


Yes
?- take(flashlight).
OK.

Yes
?- e.
The door appears to be locked.
You can't go that way.
Yes
?- n.
You are in a meadow.  To the north is the dark mouth
of a cave; to the south is a small building.  Your
assignment, should you decide to accept it, is to
recover the famed Bar-Abzad ruby and return it to
this meadow.



Yes
?- n.
You are in the mouth of a dank cave.  The exit is to
the south; there is a large, dark, round passage to
the east.

There is a key here.


Yes
?- take(key).
OK.

Yes
?- s.
You are in a meadow.  To the north is the dark mouth
of a cave; to the south is a small building.  Your
assignment, should you decide to accept it, is to
recover the famed Bar-Abzad ruby and return it to
this meadow.



Yes
?- s.
You are in a small building.  The exit is to the north.
The room is devoid of furniture, and the only feature
seems to be a small door to the east.



Yes
?- e.
The door appears to be locked.
You can't go that way.

Yes
?- use(key).
The closet is no longer locked.
Yes
?- e.
This is nothing but an old storage closet.

There is a sword here.


Yes
?- take(sword).
OK.

Yes
?- w.
You are in a small building.  The exit is to the north.
The room is devoid of furniture, and the only feature
seems to be a small door to the east.



Yes
?- n.
You are in a meadow.  To the north is the dark mouth
of a cave; to the south is a small building.  Your
assignment, should you decide to accept it, is to
recover the famed Bar-Abzad ruby and return it to
this meadow.



Yes
?- n.
You are in the mouth of a dank cave.  The exit is to
the south; there is a large, dark, round passage to
the east.



Yes
?- e.
You're in the cave, and...Shhh! There's a dragon here!
It's curled up around a chest of some sort...I don't
think it's noticed you...yet.

Yes
?- attack.
Screaming madly and flailing the sword in the air,
you rush headlong at the dragon.
The dragon, startled out of a sound sleep, flies
out of the cave. He'll probably be back soon...


Yes
?- look.
You are in a big, dark cave. The air is fetid.

There is a chest here.


Yes
?- take(chest).
With a mighty heave, you fail to lift it.

Yes
?- use(key).
Opening the chest reveals a giant ruby!

Yes
?- take(ruby).
OK.

Yes
?- w.
You are in the mouth of a dank cave.  The exit is to
the south; there is a large, dark, round passage to
the east.



Yes
?- s.
Congratulations!!  You have recovered the ruby
and won the game.

The game is over. Please enter the "halt." command.