DRIVER
by S. Goodley
from Games Computing, July 1984 - Page 58




THE HOUSE ON MISTY HILL
by S.W. Lucas
from Games Computing, July 1984 - Page 49 


I have recently been searching through some papers belonging to my
late great-grandfather and came across a note telling me about the
"House on Misty Hill. There are reputed to be several items of
treasure to be found there and I decided to search for them
immediately. Please help me in my quest by giving me instructions
in the form of two word sentences such as "GET LAMP".


Words Understood

N,S,E,W for directions.
CLIMB, DROP, EXAMINE, GET, GIVE UP, GRAB, HELP, HIT, INVENTORY,
KILL, LEAVE, LIGHT, LOOK, PRAY, PUSH, QUIT, READ, RUB, SCORE,
SHOOT, SWIM, TAKE, THROW.


WARNING!

I suggest that you don't read these [hints] unless you are
really stuck!

1. Don't forget the light in dark areas.
2. You can find a way with a map.
3. If you get stuck ask for help.
4. The key is useful if you get locked in!
5. A rope helps you to climb all sorts of things.
6. Prayer can get you out of some tricky situations.


RUNdown

Lines      Action
50-60      set initial value of variables
70-140     dimension arrays
150        calls subroutine for titles
160-170    set variables
190-200    call routines to fill arrays
230-790    main control loop - describes locations and items,
           asks for input and jumps to routine for action
800-890    fill arrays
900-1550   data for game
1560-1820  take routine
1840-2070  drop routine
2080-3200  routines for help, pray, etc.


Variables Used

h,d,x,y    used in counting loops
p          holds current location
v$(x)      holds inventory
q$(x)      holds location descriptions
s(x,y)     holds map
g$(x)      holds descriptions of items found
m(r)       holds pointers
b(x,1)     holds pointer to locations

Other variables are used as flags.


Conversion Clues

The program is written in a very standard form of BASIC. Only
minor changes will be needed to implement this game on other
machines.

INK, PAPER and BORDER are used to select foreground and background
colours. BEEP 1,1 gives a short sound effect and can be left out
entirely if you want.

The major problem with conversion to Microsoft-type BASICs is in
string manipulations. Z$(1 TO 4) in Spectrum BASIC will need to
be converted to LET Z$=LEFT$(Z$,4).

Also the dimensions of the string arrays in Spectrum BASIC include
a second number which specifies the maximum number of characters
which the array element can hold. This number should be left out in
versions for other machines.