Laser Bike
==========

Introduction
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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
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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


Variable
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A$	= draw string


Arrays
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NL	= number blank
BM	= BOMB
BX	= bomb explosion
BL	= blank


Machine Code Routines
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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
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Published in Dragon User February 1985.


Loading
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CLOADM (ENTER)

The game will run automatically after loading.