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Amiga Format CD 44
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Amiga Format CD44 (1999-08-26)(Future Publishing)(GB)(Track 1 of 3)[!][issue 1999-10].iso
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basics
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amos
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mapcreator.lha
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MapCreator.readme
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1994-10-05
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Readme for Map Creator:
This is a brief guide to using Map Creator, a demonstration of the Midwinter
mapping technique described in ACE Magazine, Issue 37.
Requirements:
Amiga (No!)
AMOS or AMOS Pro (I don't have Easy AMOS so I don't know if this will work)
Place the MapCreator.AMOS and MapCreatePalette.ABK files in the same directory.
Then load and run MapCreator.AMOS from your AMOS interpreter.
Upon running the program you should see a black screen with a prompt for a
seed value. The more observant may notice that the prompt moves up and down
as you move the mouse. Gee, the wonders of multiple screens!. Basically the
prompt is on a small hires screen overlaid on the background lowres screen,
but since both are currently cleared to black you can't make this out.
Enter a seed value, or just hit return to use the current seed shown.
Sit back and wait for the program to finish generating the map. The current
operation is shown at all times on the status screen, and when the map is
finished, the time taken for each operation, in minutes and seconds, is
displayed.
For your information:
Running on a A4000/030/882 25MHz, the timings for the default seed are:
AMOS 1.36: AMOS Pro 1.12:
Build Map : 0.29 Build Map : 0.31
Smooth Map : 0.11 Smooth Map : 0.12
Layer Map : 0.09 Layer Map : 0.09
Shadow Map : 0.14 Shadow Map : 0.14
TOTAL : 1.04 TOTAL : 1.07
Note that the programs uses integer maths throughout, with the exception of
the seed value and the timer recordings. Since I don't know how much AMOS
itself uses floating point maths behind the scenes, I can only assume that,
since before I fitted the co-pro the times were virtually identical, the
inclusion of a co-pro makes no difference to the program speed.
The slight difference between AMOS 1.36 and AMOS Pro 1.12 is not a surprise,
since I have found that, on the whole, AMOS Pro is slightly slower than AMOS,
even if some commands are faster.
To do another map, click the mouse once the timings are displayed.
To quit, use the Ctrl-C combination.
The results obtained from this program are a bit rough, since the routines do
not buffer the map data in any way. Thus, what you see on screen is what the
program uses as data. Since the main screen is 32 colour, this means there
are effectively only 31 different heights available (since the background
colour is not used in the maps). This makes for rather grainy maps, especially
when adding the random deviation. Ideally I would use a 16 bit/pixel buffer,
allowing 65000+ different levels, and then quantise the results down for
display, with options for showing different contour levels.
Eventually I hope to do this, and also add a rudimentary 3D output, probably
isometric since my perspective 3D is somewhat pathetic, and the Voodoo 3D
extension is not flexible enough (I know, I've tried using it for this sort of
work, and it just doesn't deliver the goods).
If only someone would write a decent 3D extension that provided a complete
set of commands for 3D work, I'd get it as soon as it was released.
Well, that about wraps it up for this readme file. I'd just like to thank the
producer, the script writers and the director, but most of all you, for being
there.
This has been a readme file, you've been the audience. Goodnight.
Chris
c.j.coulson@ncl.ac.uk
Postgraduate research, Robotics Group
-------------------------------------------------------------------------------
PC/Mac enthusiasts should stop reading now, turn away, exit this readme. Under
no circumstances should you read on. Your primitive humour programming may
well cause a General Protection Fault in your cerebral cortex should it come
into contact with the humour contained below (assuming you understand it in
the first place......)
Amiga fans may of course proceed, your sense of humour is well developed
enough to appreciate the remainder of the readme file.
In order to fund the development of this readme file, I have had to resort to
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