Re: Tetris in Basic

[Nama <forums6000@mac.com>]

On Mar 9, 5:27 pm, "winston19842...@yahoo.com"
<winston19842...@yahoo.com> wrote:
> On Mar 9, 2:46 am, Nama <forums6...@mac.com> wrote:
>
>
>
>
>
> > On Mar 9, 4:34 pm, "winston19842...@yahoo.com"
>
> > <winston19842...@yahoo.com> wrote:
> > > On Mar 9, 1:54 am, Nama <forums6...@mac.com> wrote:
>
> > > > I'm looking for a listing of Tetris in Basic. It doesn't have to be
> > > > Apple basic, but a classic 80's basic (not anything modern like visual
> > > > basic) would be great.
>
> > > I could supply one in TI Extended Basic! But realize, like many of
> > > Apple's contemporaries (i.e. C64) it uses character-cell based
> > > graphics.
>
> > Thanks ,
> > However I don't want to sound ignorant, but what is 'character-cell
> > based graphics'
> > I'm planning on porting this to a version of tinybasic for a very
> > obscure computer. Do you think this version will be a good candidate?
>
> You know what a character is, right? On old computers, CHR$(0) through
> CHR$(255).
>
> Character-cell based graphics (also called tile-based) is utilizing
> these characters, redefining them (choosing which pixels are on and
> off) and setting their color attributes. This is much different from
> the Apple whose graphic modes are line-based (set a pixel, draw a
> line, etc).
>
> Yes, I think it would be a good candidate. TI Extended Basic "graphic"
> commands are merely printing characters to the screen. The TI does
> have sprites, but I'm pretty sure they were not utilized in this game,
> as Tetris is a tile-based game.
>
> And unlike many of the computers of the era whose programs were chock-
> full of pokes and peeks (C64 is a good example), the TI uses built-in
> commands to do most things, so you won't find many Basic programs that
> use poke (CALL LOAD on the TI) or peek (these two commands were not
> even available in the TI Basic that was installed in the console).
>
> The version I have was modified to play music in the background, but
> this can be easily stripped off. It added some subprograms to load
> sound lists into memory to be played by the console interrupt routine
> (the only peeks and pokes you will see in the program).

Ok, I thought that was what character-cell based graphics meant. I
just wanted to makes sure as I hadn't heard that exact expression
before. Coming from the Sinclair world, I have always called them
UDG's or 'user definable graphics', however maybe I have the
terminology confused.

Well, yes indeed, the TI basic does seem  like a good candidate for my
port. Would it be possible for you to email me a listing of the game?
Just incase you want to know what computer it is for, you can see the
page on the Aamber Pegasus here:

http://web.mac.com/lord_philip/aamber_pegasus/Aamber_Pegasus.html

Thanks again
Philip