Water-Ski-School needs a 48K or 64K
machine to create the machine code program. The cassette or disk
created can be run on a 32K machine but not a 16K system.
THE GAME
It's your second week at the Water
Ski School, the first week you had no problem skiing but this week
it's a bit different. The first problem is those ramps that you have
to jump, but the worst problem is your boat driver has been taken
sick and it's up to you, while skiing, to drive the boat as well!
You control the boat by moving the
stick while holding down the button. By not holding the button you
are controlling the skier. The idea of the game is to move down the
river with the skier jumping the ramps. The boat will sink if it
hits anything. The skier will fall into the water if he hits
anything apart from the ramp, which he has to hit centrally. Also,
if the boat moves while the skier is jumping then he will be pulled
over and fall into the water. You get the 100 points for every jump,
if you jump six ramps by the time you reach the river end then you
go on to the next level. You are given four lives.
TYPING IT IN
The program is listed in the usual
machine code loader style, developed by ANALOG magazine. It has one
new feature. You will notice in the listing some lines saying
'BLANK', this is to save you typing a line of 90 zeros. The program
will replace these with zeros when you run it.
Both cassette and disk users need to
type in listing No 1. and SAVE or CSAVE a copy. You can also check
it with TYPO. When you run the program you will need to answer
whether you want cassette or disk, enter 0 or 1 and 'RETURN' and
wait as it goes through the listing checking your typing. If an
error message appears correct the line and try again. Once any
mistakes have been corrected you will be asked to ready disk or
cassette, do this and press 'RETURN'. The lines will now be read
again and written to either cassette or disk.
The cassette version can be loaded by
pressing 'START' while switching your computer on (holding OPTION is
not necessary as BASIC is turned off by the game). Please note the
cassette version requires a long tape, C30 or longer.
Disk users should type in Listing No
2. This will load and run the file created with Listing No 1.
Listing No 2 should be saved on the same disk as Listing 1.
BACKGROUND
This game was originally written as
an entry to a games writing competition of the Nottingham
Microcomputer Club. It was written with the use of the MAC65
assembler. I split the source code up into twelve small blocks which
at assembly time were all put together with the .INCLUDE command.
Splitting up a large piece of source code into blocks makes it easy
to read and alter, not to mention the fact that the source code
takes up about 450 sectors of a disk and so would not fit into
memory all at once. I have purchased and used several assemblers and
find the MAC/65 to be the best mainly due to its speed. If I put all
the separate source code files for Water Ski School on the 130XE
ramdisk I can assemble it in about 17 seconds, where as others can
take up to 17 minutes.
Listing 1 - .obj file
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Listing
2 - Loader
Water
Ski School - 2003 VERSION Steve
Hind has kindly provided page6.org with an updated version
containing several enhancements. Below you can download an
.ATR image containing the program, WSS2.COM, together with the
assembly language source code.
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