Sharp PC-1500 Applications Manual page 195

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SHARP
PROGRAM
T I T LE
SPACE EVADER GAME
PROGRAM NO.
PS- E-9
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Outline
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Can the spaceship escape from a cluster of meteori tes?
This program is a game to drive the spaceship to the goal through a cluster of
meteorites on the display. Operation is perfonned using the UP, DOWN, LEFT and
RIGHT keys. The max. score is I 00.
The point to increase your sore is how often you can aboid collision•
[ Operating Guide
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l. Key Operation
2. Score
As illustrated, the spaceship moves in
the directions corresponding to the
keys.
The spaceship keeps flashing.
2.1 Vertical key operation has nothing to do with the score.
2.2 Returning the spaceship to the left counts down by one point.
2.3 Advancing the spaceship to the right counts up by one point.
2.4 Hitting the spaceship against a meteorite counts down
by 5 points.
3. When the spaceship hits a meteorite, an explosion is displayed, and an alann
sounds.
The game is, however, restarted.
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Contents
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I. The randomly selected one to two-dotted meteorite pattern per row is stored in
the meteorite display pattern table. One to 100 rows are to be housed, with an
alann sounding for each.
2. After the display of the housed meteorite pattern table contents, the spaceship
appears in the first row, thus starting the game. The spaceship moves, while
flashing.
3. The spaceship goes st raight on to the right at a constant speed. Operate the
appropriate key to prevent the spaceship from hitting a meterorite. When the
spaceship collide with a meteorite, the explosion pattern is displayed. This
decreases 5 points from the score.
4. One point decreases from the score when the spaceship returns, and one point
increases when it advances.
Moving in other directions does not affect the score.
5. The checkered
flag
will
be displayed when the spaceship arrives at the goal.
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