CV8310-ManhattanInvasion-P83.TAP
by Mike Singleton

TV INSTRUCTIONS

To get the best effects from your 3D listing follow these simple rules. The
stereoscopic effect comes over best in a shady room. Make sure there are no
reflections on your TV screen. You need to get the red and blue colours on
your TV as pure as possible. To do this turn the colour and contrast
controls on your TV up to maximum.

The brilliance {should be} adjusted while wearing the 3D glasses which come
with this magazine. Look at the screen through one eye at a time. Adjust
the brilliance so that you only see red through the red lens of the
glasses. Then look through the blue lens and adjust the control so you can
only see blue images. If it is not possible to do this perfectly, make the
second colour you see through each lens as faint as possible. For example,
if you are still seeing some red through the blue lens try to make the red
as dim as possible by using the brilliance control.

The best viewing distance varies with the size of your TV screen. But
somewhere between four and eight feet {should be} ideal. You should sit
directly in front of the screen to enjoy the best effect. When you first
put the 3D glasses on it may take your eyes a minute or two to adjust, but
after a while the two red and blue images will merge into a single
stereoscopic image. Move your head from side to side while looking at the
screen to convince yourself that you are looking at a true 3D game. Objects
in the foreground will appear static, but the position of objects in the
background will apparently change!

By following these simple rules you'll get the best out of these games. But
remember, please ask your parents before you start fiddling with the TV,
they might not want to see Coronation Street in unnatural colours!


The stereo effect is coaxed out of the Spectrum by using magenta, green and
yellow instead of red, blue and purple. The red-and-blue spectacles still
work with these colours.

For reasons of speed, the action of Manhattan Invasion takes place in the
foreground only. It is, of course, possible to have action in the
background as well - the 3D-Deep machine code game I've been working on for
the Spectrum (see Games News) has swift, smooth movement at all depths -
but in BASIC this tends to slow the game down unbearably!

In the far distance is a background of skyscrapers separated by dark strips
of sky. In the middle ground is a chequered wall. In the foreground there
are the enemy invaders plus your own missile base at the bottom of the screen.

The idea of the game is to knock out the enemy invaders, but if you hit one
it doesn't explode - it is just immobilised. None of your missiles can pass
through an immobile invader so it acts as a shield for any invaders coming
in above it. The invaders attack from left to right and you only score a
hit if you prevent them from reaching the right-hand edge of the screen.

In each sheet there are eight invaders, all flying at different heights.
The higher the invader, the higher you score if you hit it. One game
consists of three screens, but it you manage to immobilise a whole screen
of invaders, you get a chance at an extra screen.


RUNS ON A SPECTRUM IN 16K AND 48K

Variables
bx,by   : missile base x,y coordinates
mx,my   : missile x,y coordinates
ex,ey   : enemy ship coordinates
sheet   : sheet counter
hit     : hit counter
c       : number of ships on current sheet
score   : current score
high    : current high score
l(17)   : flags for recording which heights have already been used

Controls
Key 5: move base left
Key 8: move base right
Key 7: fire missile
Key S: start new game

NOTE: In lines 10-100 and lines 800-840 the capital letters in strings
refer to GRAPHICS characters whose user definitions are given in lines
500-617.


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CV8310-Venture16-P92.TAP
by A Clapham

Extract from a time traveller's diary discovered in the pyramid of Ikhotep,
pharoah of the ninth dynasty on the planet Sirius B, in the dog star system.

"I have been attempting to discover the secret of the pyramid for some
months now. It is the only way I will be able to escape this barren planet.
After my time-machine was destroyed by the warrior tribe I found my way to
this dusty monument after consulting a man they regard as a wizard. He is
in fact a fellow traveller in time and space exiled by the Time Lords to
this lost planet. He has decided to stay and pursue his black arts among
the warrior folk. But he has told me of a time gate which will lead me back
to the main time lanes and freedom. He said the gate was hidden within the
pyramid. I have uncovered some clues but not enough to lead me to the final
solution. I can only keep trying. But I feel that, for me at least, time is
running out."

The diary was found next to a small pile of oddly shaped bones deep within
the heart of the pyramid.

Can you find your way out of the pyramid and off the barren planet? You
will find several rooms within the pyramid and several objects within those
rooms which must be coUected to solve the riddle of the ancient monument.
The program uses the standard two word entry system and adjectives should
not be entered.. To move simply type in the direction you wish to go, for
example: 'N' or 'north'. Other useful words are TAKE, GET, THROW, DROP,
INVENTORY.

