| Genre: | Arcade; Magazine Type-in |
| Publisher: | Dragon User |
| Machine Compatibility: | Dragon 32, Dragon 64 |
| Release: | on Cassette |
| Available For: | Dragon 32 |
| Compatible Emulators: | XRoar 0.33.1 (PC (Windows)) |
| Original Release Date: | 1st February 1985 |
| Original Release Price: | Unknown |
| Market Valuation: | £2.50 (How Is This Calculated?) |
| Item Weight: | 64g |
| Box Type: | Cassette Single Plastic Clear |
| Author(s): | Steve Gathercole |
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Full Instructions
Introduction
Steve Gathercole presents a graphic laser bike game.
The game uses several machine code routines, so I have incorporated error checks at all the data statements. As a large amount of data is needed for the high detail I have also used error checks in the graphics data. This should help readers to type in the listing.
The object of the game is to break through the outer perimeter of a secret enemy base you have discovered on your laser bike. You must shoot down the missiles fired towards you. You only have a few shots at each missile and must guess the height and distance of your shot using the right joystick and the fire button to fire. Machine code has been used for the sound effects and scrolling.
Program Data
| lines 60-90 | ... | read and poke machine code |
| lines 300-350 | ... | display wait screen |
| lines 550-1500 | ... | read and poke main graphics |
| lines 1510-1860 | ... | set up screen background |
| lines 1870-2100 | ... | main loop |
| lines 2570-2719 | ... | start again routine |
| lines 2730-3150 | ... | instructions |
| lines 3160-3340 | ... | draw string data and subroutine |
Variables
| A$ | ... | draw string |
Arrays
| NL | ... | number blank |
| BM | ... | BOMB |
| BX | ... | bomb explosion |
| BL | ... | blank |
Machine Code Routines
| EXEC 32187 | ... | (bomb scroll) |
| EXEC 32215 | ... | (scroll screen clear) |
| EXEC 32000 | ... | (main scroll for background) |
| EXEC 32114 | ... | (laser sound) |
| EXEC 32071 | ... | (bomb explosion sound) |
| EXEC 32144 | ... | (motorbike explosion sound) |
Credits
Published in Dragon User, February 1985.
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Download
A digital version of this item can be downloaded right here at Everygamegoing (All our downloads are in .zip format).
| Download | What It Contains |
|---|---|
 | A digital version of Laser Bike suitable for XRoar 0.33.1 (PC (Windows)) |
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