home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Fresh Fish 5
/
FreshFish_July-August1994.bin
/
bbs
/
docs
/
blazehumor-1.0.lha
/
BlazeHumor-1.0
/
Articles
/
weirdbench.7
< prev
Wrap
Text File
|
1993-09-01
|
5KB
|
92 lines
WEIRDBENCH
Programming Explained
September 1993
Copyright 1993 Daniel J. Barrett
As you sit spellbound in your chair, zooming through the latest
16-way hyper-parallax-scrolling arcade game extravaganza, do you ever
wonder how the heck Amiga programmers make all this stuff happen? How do
they create and control the zillions of graphic thingies on the screen? Why
does the little guy move when you push the joystick? And how does an A500
with only 4096 colors manage such spectacular-looking crashes?
Well, wonder no more! This month, WeirdBench explains it all to
you. It's very simple and doesn't require any programming background. In
fact, if you DO have a programming background, you probably will not
understand this article at all.
To begin, it's important to realize why programming seems like
"magic" to the uninitiated. The reason is simple: it IS magic. One day
when you are feeling brave, open up your Amiga and find the panel that
reads, "WARNING: NO USER-SERVICEABLE PARTS INSIDE. DO NOT REMOVE UNLESS
YOU WANT TO VOID YOUR WARRANTY AND LOSE SOME LIMBS." Behind the panel, you
will find voodoo dolls, newt eyes, several scrolls and potions, and an
engineer's half-eaten peanut butter sandwich sprinkled with whiffle dust.
But on the technical side, creating a program requires that you
know a programming language. This is a language for writing commands to
tell the computer what to do. Unlike human languages, programming
languages are rarely spoken aloud, or at least not in polite company. Some
of the more popular ones are called BASIC, "C", Pastel, FORSKIN, Kobold,
and Lithp. Most Amiga programs are written in C, a language invented at
AT&T/Bell Laboratories in the 1970's and widely praised by programmers as
being "easy to spell." Some people complain that C code is difficult to
read, but they are clearly wrong, as illustrated by the following simple
example:
while (((x<y?z:snorf),c=getchar())!=NULL)
KaBoom();
Game gurus out there will no doubt recognize this as the entrance to Level
129 ("Exploding Gopher Heads") in BLAZEMONGER.
Other programs -- notably arcade games and nuclear missile
launching software (be careful never to confuse the two) -- are written
directly in assembly language. Assembly programmers love the language
because it is very "low-level" and allows exact control over every aspect
of the program. The assembly equivalent of the C code above look like:
MOVE R1, R2
JUMP L5
FIRE 2, Late
DIE N, Agony
RIP
Programmers are forever arguing amongst themselves whether it's better to
write programs in C or assembly. (Those wacky programmers! They REALLY
know how to have a good time.)
Once you have chosen a programming language, you need a compiler or
assembler. These are software tools that translate your easy-to-read
program into mysterious zeroes and ones that only a computer can understand.
Well... that's not entirely true, because there ARE human beings who can
actually comprehend machine code; but they tend to be space aliens, swapped
for human babies while their parents were out at the local User's Group
meeting. But for those of us with lives, a compiler/assembler is the way
to go.
At this point, all you need to do is invent a program, write it,
compile it, toss in a newt eye or two, and you're done! Don't let those
pseudo-elite hackers fool you: creating a program is actually quite
trivial, and it always works the first time. All this talk of "bugs"
and "upgrades" is just a diversion so the programmers can squeeze more
money out of unsuspecting users and spend it on so-called "Developers'
Conferences" which are held on tropical islands and are, in truth, nothing
more than lavish, month-long orgies. Now you know why computer programmers
always have those glassy-eyed stares.
Nowadays, programming has become even easier, thanks to advances
like Commodore's AmigaVision. Just about anybody with a mouse and an index
finger can create full-fledged multimedia extravaganzas these days without
the need for any specialized knowledge, or even brain cells. The radical,
die-hard programmers will claim that this isn't "true" programming, but
they're just afraid that "riff raff" like you and I will start attending
their private "Developers' Conferences" and there won't be enough bungie
cords to go around.
So now you're ready to get out there and start programming! Pretty
soon, you'll be creating those same astounding graphic pyrotechnics that
you've seen in your favorite games and word processors. Don't forget your
voodoo doll.