lightshow by sinnfrei

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lightshow by sinnfrei [web]

[nfo]

screenshot added on the 2004-05-19 by sinnfrei

platform :

MS-Dos

type :

32b

release date :

may 2004

release party :

n/a

compo :

n/a

ranked :

n/a

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	2

popularity :

0 %

-0.14

alltime top: #24160

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added on the 2004-05-19 by sinnfrei

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comments

this isn't a proper screenshot. if anyone can tell me how to make good screenshots of DOS programms mail to: sinnfrei_@freenet.de

added on the 2004-05-19 20:17:51 by sinnfrei

why add wrong screenshot ? :[

added on the 2004-05-19 23:26:34 by apricot

Use DOSBox Can help you to take screenshots of Dos based stuff.

Below i list 2 shorter versions for you. 1st is the same as yours but is now only 23b, the other is 37b but checks for ESC keypress, and then cleanly exits. The clean exit is can be removed if needed taking it down to 27b.
This listing is also in FASM format, to get it to compile with whatever compiler you use, you may need to change the "byte [si]" to [byte ptr [si]".

You'll also notice that the top pixel of the lines is sometimes the previous frames colour, you can get around that by keeping some of your original code, and get it to around 61 bytes(from what i remember)

I only started fiddling as there was plenty of room in there for checking for an ESC keypress :) but noticed a lot of the code wasn't even called, so just stripped it out.

Code:

lightshow.asm

        org 100h

start:
        mov     ax, 13h
        int     10h

        push    0A000h
        pop     ds

        dec     byte [si]

drawloop:
        inc     si
        inc     si
        inc     byte [si]
        inc     byte [si]
        inc     si
        inc     si
        inc     byte [si]

        jmp     drawloop

Code:

lightshow-cleanexit.asm

        org 100h

start:
        mov     ax, 13h
        int     10h

        push    0A000h
        pop     ds

        dec     byte [si]

drawloop:
        inc     si
        inc     si
        inc     byte [si]
        inc     byte [si]
        inc     si
        inc     si
        inc     byte [si]

        in      al, 60h         ; was ESC pressed?
        dec     al              ;  |
        jnz     drawloop        ; If no then repeat


endprog:
        mov     ax, 0003h
        int     10h

        mov     ax, 4C00h
        int     21h

And, i assume this is your 1st asm prod, so hopefully the exit codes and checking for keypress is of use to you. Keep on going and look forward to more of your attemps.

Btw, check out www.256b.com also which is a site dedicated to 256b and under productions. There you can download about 400 256b and under prods, a lot which in clude the source code so you can learn from them.

added on the 2004-05-20 13:36:47 by Intrinsic

Oh, and you'll noticed things like the push/pop bit of code in there. That will save you 1 byte :)
And, in your original code, you had a lot of move [reg], 0 s. You can save another byte on those by doing "xor [reg], [reg]" which give the same results.

added on the 2004-05-20 13:38:49 by Intrinsic

thanks for the tips, Intrinsic, and you're right that's my first prod. About DOSBox, I had already tried it but it didn't work. The prod wasn't starting. i've uploaded the new version.

added on the 2004-05-20 14:48:33 by sinnfrei

Also, you can change

Code:

        mov     ax, 13h

to

        mov     al, 13h

to shave off an extra byte.
But i should also mention this does make assumptions about AH being 0 (which it should do anyways, but could break in future :)

Also:

Code:

        inc     byte [si]
        inc     byte [si]

to

        add     byte [si], 2

to shave off another byte.

added on the 2004-05-20 15:51:35 by Intrinsic

Now I got it working on DOSBox. The file name was too long.

added on the 2004-05-20 17:19:55 by sinnfrei

Yep ! Another new dude on the scene ! So I'm not the only newbie here !
Btw use retn for exit (if stack is balanced, in other case e.g. push ax)
P.S. Feel free to ask me whatever you want man, as soon I'm not a DADY on the scene, I'll answer...

added on the 2004-05-20 17:59:24 by Someone

not very interesting.

added on the 2004-05-20 20:54:08 by ruuvari

Proper Screenshot:

added on the 2004-05-21 15:20:12 by sinnfrei

It's bad.

added on the 2004-05-22 09:26:17 by Bugo the Cat

But it is his 1st attempt so he gets a pat on the back for that.
Everyone seems to forget they all started from the same position, they didn't just leap into making great prods.
Just like experienced drivers bitching about learner drivers, they were once in the same position.

added on the 2004-05-22 11:40:49 by Intrinsic

everyone has to start somewhere... but it shows a lack of respect to the others if every little try gets posted to pouet.

added on the 2004-05-22 22:22:14 by xeNusion

Well,. it's ok for me if someone wants to post anything, however I just thumbed it down regardless if it's his first, because it wasn't even displaying anything that looks like an effect, just some blinking lines.

added on the 2004-05-23 13:16:49 by Bugo the Cat

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