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1990-05-21
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Please read this if you intend hacking around with !Aquarium:
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
The first problem you are likely to encounter is that of
changing/altering the sprites:
DECOMPRESSING THE SPRITES FOR EDITING WITH !Paint:
==================================================
To decompress the sprites for editing in !Paint, edit
the !RunImage, and look in PROCinitsprites for the point
where there is a CALL command. After this, place the
line:
SYS "OS_SpriteOp",256+12,spr%,"$.!Aquarium.Sprites":END
Now, run !Aquarium, and (if you have >110kB free on
your disc) you should have the original sprite file in
the !Aquarium.Sprites. This file can also beconverted
back simply by running the 'PackSprite' program. See
below.
RE-COMPRESSING THE SPRITES FOR USE IN !Aquarium:
================================================
In the !Aquarium directory, you will find a small BASIC
program called 'PackSprite'. This attempts to pack the
sprite file called '$.!Aquarium.Sprites' into a file
called '$.!Aquarium.PackedSpr'.
MAKE SURE YOU ONLY RUN THIS USING A BACKUP COPY OF !Aquarium!
Then, you must alter the !RunImage program: It
decompresses the sprites in a procedure PROCinitsprite.
The 2 important things to check here are:
1) Have I got enough space reserved to hold the
decompressed sprites?
2) (look for the line marked with **** in a REM) Have
I put the correct 'Original Sprite size' value into the
correct variable?
You will know when you have got these wrong, 'cos the
desktop will crash horrendously!
Now if any errors occur, they are most likely due to
too small a WimpSlot value. (Especially if you have
compiled the !RunImage)
To compile !Aquarium:
=====================
RiscBasic likes the !RunImage, and you only need to
remove the 'END=END+xxxx' line near the start of the
program for it to compile happily.
ABC 2 doesn't like it at all! (I got it to compile,
but it never ran)
Yo! Keep reading!
=================
Also, if you make any good improvements to this
application, have any new ideas for Aquarium-
based animation or other animations, or write
your own animation for use with this, PLEASE
send me a copy to look at!
(Ideas at present include 'Dolls House', 'Ant Farm',
and 'Aviary' (Bird cage))
I am at:
J.Williams,
R.D.2, Manuel Road,
Silverdale,
North Auckland,
NEW ZEALAND.
Thanks!
Jason Williams, '90.
P.S. If anyone is willing to donate a 30MHz ARM-3, I
would really really really like to write a 30MHz (and
12MHz) it'll-blow-you-away version!! (hint hint)