makes sure that Ihe ship doesn't leave the left side of the screen. Then PO is
Listing I continued, b90
IP HOSPACETHKNGOSUB770
700
POKE
710 720
POKEN1+22,SPACE P0KEN11+DF,WHITE
Poked with the ship character, 65, and
Nl,ARROW
its previous position (either PO +1 or
730 740 750
IF NKCHAR+22 THEN NUN1-22 POKE Nl+22,SPACE
7G0 770
RETURN H=PEEK(N1):IFH«81
780
FOR
790
G0SUB1020
H2-I
TO
800
P0KE36879.25
810
P0KE36879.104
820
NEXT
830
P0KK36879.104
840
F2-0
PO-1, depending on direction of movement) is Poked with a space,.12. Next, the position of the larger, SH,
F2=0
is incremented by one (the target always THKN
moves from lefl to right), and a reverse
RETURN
space is Poked in its new location. The
50
former position is Poked with a space.
Once
the
fire
button
has
been
pressed, a missile, ARROW, is released
N2
lo position Nl, through approprialc Poking. Now, movement of the joy stick will control NTs value to the left
SIO HITS-HITS+1 860
RETURN
or right. With each "turn," however,
870 880
P0KE79JO.81 POKK 38630,4
Nl decreases by 22 to move it one row
890 PR1NT"ISHFT 900
CLR|"
PRINT"[CTRL 8](SHFT <)](SHFT Q) I SIIFT Qj[SHFT Q][SHFT QKSHFT Q}[ SIIFT Q][SHFT Q][SHKT QlfSHFT Q][SHFT Q
HSHFT QKSHFT
SHFT
Q][SHFT
910 PRINT" 920
C) 11 SIIFT Q j ( SIIFT (J][SHFT Q][SHFT Q][
Q][SHFT
QHSHFT
Q]|SHFT
Q ]"
[CTRL 2]GAME OVER"
PHINT"[CTRL8][SHFT Q][SHFT Q][SIIFT Q][SHFT Q][SI1FT Q][SHFT Q][SHFT Q ] I SHFT Q][SHFT Q][SHFT QHSHFT Q] [SIIFT Q] t SIIFT Q][SHFT Q]fSHFT Q][SHFT Q][SHFT Q][S HFT Q][SHFT Q|[SHFT Q][ SIIFT QH SIIFT Q][3CRSR DNS]"
930 PRINT"
HITS:
940 PRINT"[CRSR
DN ]
";HITS
SCORE
higher on the screen. The program periodically Peeks to see what lies in the space next to be oc cupied by the missile.
If it does not
equal a space, then a collision has taken place, and control branches to a routine that causes the explosion and incre ments the score counter, HIT, by one.
When the missile reaches the top of the screen, the player can resume con trol of the ship and repeal the cycle, un
i";HITS
til the target reaches the bottom, and
the game is over. Clfclo 37 on Readei Service card
ir Vic 20™ or Commodore 64™ Computer This exciting, new weather package
allows you to learn, monitor, and predict the weather using the same equipment as the pros.
Pour Own Weatherman
Learn/Teach Meteorology More than a toy or game,
The new HAWS (Home Auto
HAWS provides the first oppor
matic Weather Station) com bines a quality weather sensor with software to let you track
tunity to use your computer as a
data sampler and data analysis system for meteorology, allow
weather conditions inside or
ing the user to interact witfi incoming data to monitor and forecast weather conditions.
outside your home. HAWS moni tors weather data including dew
point, temperature, humidity,
HAWS includes an instructive
and aimospheric pressure; plots
historical data and graphically
displays weather trends; deter mines the comfort and chill fac
tors to help you dress; HAWS
even forecasts the weather and compares your predictions to the local weatherman's. HAWS uses the same sensor employed by weather services in
60 countries worldwide. The HAWS package costs only
$199.95 and includes the sensor,
cassette or floppy disc program, 15-foot cable with connector for
the computer, and a complete
user's manual. Send loday or call toll free to order your HAWS package
Ordering Information
Send S199.95 in check or money order payable to Vaisala. Inc. Include name, address, telephone num
ber, your computer model (VtC 20 or Commodore 64),
and program preference (tape cassette or floppy disc), Or call toll free to place your order, Major credit cards accepted
Dealer inquiries invited.
1-800-227-3800 ext. haws VIC 20 and Commodore 64 Hro tradema'ks ol Commodore Electronics Lid
L 30 / RUN Magazine January 198-i
software program and a com plete user's manual that teaches meteorological terms and equa tions to allow anyone to quickly grasp weather concepts either at home or in the classroom. Sim ple plug-in components and easy hookup also means you can free up your computer at
any time for other duties. HAWS is a great educational tool for anyone. Order today.
® VAISALA VAISALA INC
2 TOWER OFFICE PARK WOBURN. MA 01B01
SB