Re: Trig Tables, Console Apps

[Ales Mlakar <jazzbre@slo.net>]

> float Sin[256];
> for(i = 0; i < 256; i++) Sin[i] = sin(i * PI / 128); // should be PI
> divided by half the # of degrees
> <sine of angle> = Sin[(unsigned char)<angle>];

Yeh that's ok but you could use normal Sin and Cos function these days since
the processors are getting pretty fast, except if you're still working on an
old Pentium or even 486.

> Now for my (newbie) question. I feel like a total idiot asking this, but
in
> a DOS compiler, I've compiled DOS programs. In a Windows compiler, I've
> compiled Windoze programs. Recently I read something about how easy it is
> to use OpenGL with a console application. It sounded good to me, so I went
> to try and figure out what a console application was by trying to compile
> one with my Windows compiler. It came out in a DOS box, like a DOS
program.
> When I tried to use int 10h to switch video modes, though, it didn't do
> anything. Now I'm guessing that a console application is a Windows program
> running in a DOS interface? I can't seem to find any info on this on-line,
> so I was hoping someone could explain to me what, exactly, a console
> application is and what it can be used for. Is there a way to do graphics
> directly (quickly) like modeX, or do I have to use OpenGL / DirectX. If
so,
> does anyone know of any resources I can look up on the subject or have an
> opinion about using this (Is it slow, fast, portable, easy to use?)
instead
> of a normal Win or DOS app. It sounds promising to me because I don't like
> using Windows, but I like the simplicity of not having to worry about all
> the memory and compatibility issues of DOS.

A windows console program is still a windows program, just that it runs in
DOS Console, which isn't the same as a program compiled in DOS, if you look
at the exe's headers you'll see that it's the same as a windows application.
Setting your video mode wont work that way, use DirectX or OpenGL to do that
for you, it will be faster (since it's done by your cards driver) and easier
to do.
Use windows man, It's easier than writting DOS stuff, since everything is
already done, your task is just to use it. You have a fast access to just
about anything you could think of... Internet, graphics, sound, input, ...
www.opengl.org
www.microsoft.com/directx

================
Ales Mlakar
(aka JaZzBrE, ICQ# 2168060)
JaZz=Life;     // Jazz is Life
================


=================================================================
The GameProgrammer.Com mailing list is for the open discussion
of any topic related to the art, science, and business of
programming games. This list is especially tolerant of beginners.
We were all beginners once

To SUBSCRIBE or UNSUBSCRIBE please visit:
http://gameprogrammer.com/mailinglist.html