Modified Compos

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Do you think it is a fair thing to optimize someone's compo, and then add your credit?

Yes, if you don't change the docs

[ 1 ]

Yes, if you don't change the docs, and respect the author ( no words like shit, sux ... )

52%

[ 11 ]

Yes, but only if you don't post it anywhere (internal use)

14%

[ 3 ]

No, it is not fair to add your name to someone's compo, even if it whould fit in after the optimization

[ 2 ]

No, compo's are made by the author and are as is, and no subject to change, they're the way they meant to be implemented

19%

[ 4 ]

Total Votes : 21

Author

Thread

Matrix

Joined: 04 Sep 2004
Posts: 1166
Location: Overflow

Matrix 23 Sep 2004, 21:25

Should i post cracked compos here?

Is anyone interested in?

Another question :
What do you think of getting someone's idea about something and with its use, posting new program to a compo?
this is a question, cause' it was only an idea, for example if the code is very different too.

and what do you think about optimizing other's compo, and then adding your credit to it ( it is only partially pirating if you take it that way )
but in other aspects, compo's are made for size optimization no?
if you look at this side, people could learn more from the modified compo's, like even more optimizations.

MATRIX

23 Sep 2004, 21:25

fasm9

Joined: 19 Jun 2003
Posts: 439

fasm9 23 Sep 2004, 21:36

Hi,

what is "compo" or "compos" ?

--

23 Sep 2004, 21:36

Matrix

Joined: 04 Sep 2004
Posts: 1166
Location: Overflow

Matrix 23 Sep 2004, 23:44

I meant asm compo
you know like @ http://asmcompo.org

MATRIX

23 Sep 2004, 23:44

Matrix

Joined: 04 Sep 2004
Posts: 1166
Location: Overflow

Matrix 24 Sep 2004, 00:20

I ll post an example too,
this code is one of my favourites:

Code:

; code by MathM

.model tiny
.code
.startup
           mov al,13h
          int 10h
             mov dx,321
          lds cx,[bx]
a:           dec cx
b:                add di,dx
           jns c
               neg dx
              add dx,640
c:            xchg [di],bl
                loop b
              add bx,di
           in ax,60h
           dec ax
              jne a
               ret
end

but i was having a little problem with it: it didn't exit Sad

so i decided to make it exit, nothing serious, but i could even make it fit in size:

Code:

; code by MathM
; CRACKED BY MATRIX
org 256
                mov al,13h
                int 10h
                mov dx,321
                lds cx,[bx]
a:              ;dec cx
b:              add di,dx
                jns c
                neg dx
                add dx,640
c:              xchg [di],bl
                loop b
                add bx,di
                in al,60h
                dec al
                loopnz a ;jnz a
                ret

and i didn't mean to steal the code, you can see what i did.

MATRIX

24 Sep 2004, 00:20

JohnFound

Joined: 16 Jun 2003
Posts: 3499
Location: Bulgaria

JohnFound 24 Sep 2004, 01:01

If the distribution license allows changes in the source and if you doesn't violate the authors rights (i.e. to claim that source is your, while it is not) and license agreement, you are free to make changes in the original product and you have authors rights to the parts written by you.
Some license agreements allows changing of the license, some not. Also sometimes you can use some open source code together with another license, even closed source. In all cases, to credit the first author is a matter of good manners. Smile

Read carefully documentation and if something is not clear contact the author(s).

24 Sep 2004, 01:01

Matrix

Joined: 04 Sep 2004
Posts: 1166
Location: Overflow

Matrix 24 Sep 2004, 01:02

another code from asmcompo:

Code:

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;File: hell.asm; heavily commented hell fire demo using fasm 1.53   ;;
;;Author: AsmDemon  asmdemon@cox.net                                 ;;
;;Date: August 8, 2004                                               ;;
;;Use: Compo #9 modified from compo #8                               ;;
;;IRC: #asm   Web: http://members.cox.net/asmdemom/                  ;;
;;Greetz to kalipara, mov, and others                                ;;
;;It is better to be on the right side of the devil than in his path.;;
;;R.A.C. 11131983 0x41 0x73 0x6d 0x44 0x65 0x6d 0x6f 0x6e            ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;;;;;;;;;;;;;;;;;
;;Code Starts at;;
;; offset 100h  ;;
;; using 16-bit ;;
;;;;;;;;;;;;;;;;;;
$=0x0100
use16

;;;;;;;;;;;;;;;;;;;
;;Set Screen mode;;
;;to 320x200x256 ;;
;;;;;;;;;;;;;;;;;;;
mov al, 0x13
int 0x10

;;;;;;;;;;;;;;;;;;;;;
;;Select Buffer for;;
;;output to screen.;;
;;;;;;;;;;;;;;;;;;;;;
push 0xa000
pop es

;;;;;;;;;;;;;;;;;
;; Set Color to;;
;;  red scale  ;;
;;;;;;;;;;;;;;;;;
mov dx, 0x03c9
setcolor:
out dx, al
xchg bx, ax
out dx, al
out dx, al
xchg bx, ax
inc ax
jnz setcolor

;;;;;;;;;;;;;;;;;;;;;
;;Main Program Loop;;
;;;;;;;;;;;;;;;;;;;;;;;
;;set adc ax, 0x0001 ;;
;;this fixes demo 8  ;;
;;shows what I wanted;;
;;;;;;;;;;;;;;;;;;;;;;;
mainloop:
adc ax, cx
cmc
stosb
loop mainloop ; minus 1 from cx
inc ax
jmp mainloop

;;;;;;;;;;;;;;;;;;;;;;;
;;Following added for;;
;; the 32 byte limit ;;
;;;;;;;;;;;;;;;;;;;;;;;
db 0x52
db 0x41
db 0x43
db 0x39

but i was having a little problem with it: it didn't exit Sad

so i decided to make it exit, nothing serious, but i could even make it fit in size:

Code:

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;File: hell.asm; heavily commented hell fire demo using fasm 1.53   ;;
;;Author: AsmDemon  asmdemon@cox.net                                 ;;
;;Date: August 8, 2004                                               ;;
;;Use: Compo #9 modified from compo #8                               ;;
;;IRC: #asm   Web: http://members.cox.net/asmdemom/                  ;;
;;Greetz to kalipara, mov, and others                                ;;
;;It is better to be on the right side of the devil than in his path.;;
;;R.A.C. 11131983 0x41 0x73 0x6d 0x44 0x65 0x6d 0x6f 0x6e            ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;CRACKED BY MATRIX;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;               ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;;;;;;;;;;;;;;;;;
;;Code Starts at;;
;; offset 100h  ;;
;; using 16-bit ;;
;;;;;;;;;;;;;;;;;;
$=0x0100
use16

;;;;;;;;;;;;;;;;;;;
;;Set Screen mode;;
;;to 320x200x256 ;;
;;;;;;;;;;;;;;;;;;;
mov al, 0x13
int 0x10

;;;;;;;;;;;;;;;;;;;;;
;;Select Buffer for;;
;;output to screen.;;
;;;;;;;;;;;;;;;;;;;;;
push 0xa000
pop es

;;;;;;;;;;;;;;;;;
;; Set Color to;;
;;  red scale  ;;
;;;;;;;;;;;;;;;;;
mov dx, 0x03c9

mainloop:
adc ax, cx
cmc
stosb
loop mainloop ; minus 1 from cx
inc ax
push ax

out dx, al
xchg bx, ax
out dx, al
out dx, al
xchg bx, ax

in al,$60
dec al
pop ax
jnz mainloop
ret
;;;;;;;;;;;;;;;;;;;;;;;
;;Following added for;;
;; the 32 byte limit ;;
;;;;;;;;;;;;;;;;;;;;;;;
;db 0x52
;db 0x41
;db 0x43
;db 0x39

i like it when a program exits Smile

( these 2 codes are 32 bytes )

MATRIX

24 Sep 2004, 01:02

JohnFound

Joined: 16 Jun 2003
Posts: 3499
Location: Bulgaria

JohnFound 24 Sep 2004, 01:38

btw: I don't think this kind of activity can be considered as "cracking". But if you like the word, feel free to use it. It's cool to be cracker, isn't it? Very Happy

24 Sep 2004, 01:38

Matrix

Joined: 04 Sep 2004
Posts: 1166
Location: Overflow

Matrix 24 Sep 2004, 09:45

JohnFound wrote:

btw: I don't think this kind of activity can be considered as "cracking". But if you like the word, feel free to use it. It's cool to be cracker, isn't it?

Hello JohnFound,
maeby you're right,but tell me a better word Smile

although i only meant cracking on adding exit function, and/or improving a little bit on the code Smile

.

MATRIX

24 Sep 2004, 09:45

Vortex

Joined: 17 Jun 2003
Posts: 318

Vortex 24 Sep 2004, 10:18

Hi Matrix,

Instead of the word "cracking", you should prefer saying "modifying" Smile

_________________
Code it... That's all...

24 Sep 2004, 10:18

scientica
Retired moderator

Joined: 16 Jun 2003
Posts: 689
Location: Linköping, Sweden

scientica 24 Sep 2004, 10:56

cracking (usually) means BREAK/DESTROY/etc somethin, as Vortex says, "modifying" is better, or even better are:
improve
patch/fix
enhance
tweak (eg, it works for (s)he who wrote it but not for you, you tweak it a little so it runs for you --- note, not "works as in works for those who got a valid serial" but "works as in starts, does something, exitst")

24 Sep 2004, 10:56

ASHLEY4

Joined: 28 Apr 2004
Posts: 376
Location: UK

ASHLEY4 24 Sep 2004, 16:33

Matrix , How come you only made it exit , but you did not make it smaller ?.
Say 30 bytes, that must be possible for a star field like that.
And you do not usually get the code with stuff, you need to crack.

\\\\||////
(@@)
ASHLEY4.

24 Sep 2004, 16:33

Matrix

Joined: 04 Sep 2004
Posts: 1166
Location: Overflow

Matrix 24 Sep 2004, 18:50

scientica wrote:

cracking (usually) means BREAK/DESTROY/etc somethin, as Vortex says, "modifying" is better, or even better are:
improve
patch/fix
enhance
tweak (eg, it works for (s)he who wrote it but not for you, you tweak it a little so it runs for you --- note, not "works as in works for those who got a valid serial" but "works as in starts, does something, exitst")

Ok thanks, i see my topic has changed too Smile

MATRIX

24 Sep 2004, 18:50

Matrix

Joined: 04 Sep 2004
Posts: 1166
Location: Overflow

Matrix 24 Sep 2004, 19:04

ASHLEY4 wrote:

Matrix , How come you only made it exit , but you did not make it smaller ?.
Say 30 bytes, that must be possible for a star field like that.
And you do not usually get the code with stuff, you need to crack.

\\\\||////
(@@)
ASHLEY4.

the snow program you were thinking of?
well, they are both 32 bytes in size, you can see the problem there, cause dec ax is smaller than dec al therefore it doesn't exit if you don't want it to exit then you can skip the port $60 thing it will be smaller.

Code:

; code by MathM 
; CRACKED BY MATRIX 
org 256 
                mov al,13h 
                int 10h 
                mov dx,321 
                lds cx,[bx] 
a:              ;dec cx 
b:              add di,dx 
                jns c 
                neg dx 
                add dx,640 
c:              xchg [di],bl 
                loop b 
                add bx,di 
                loopnz a ;jnz a

here you are, ASHLEY4, 27 bytes, for your needs, if you like this better.
this will work like an operating system you can add cli and sti at the beginning and at the end to make sure it will not exit on many systems. Smile

but i whouldn't recommend these kind of "optimizations" they are making the user to re boot the system each time the use has ended.

MATRIX

24 Sep 2004, 19:04

Matrix

Joined: 04 Sep 2004
Posts: 1166
Location: Overflow

Matrix 24 Sep 2004, 19:14

ps.: i'm sure a beginner programmer could put the exit on keypress to the code, however i have seen such cases when it was not seemed to be possible to put the exit code in. then they can't put it there. like if the program is already 31 bytes they can't squeeze in the exit function in 1 bytes Smile

.
in this case they should atach a version that can exit and for example cleans the environment, sets the video mode back, its not a big thing.
if they can push ds pop es they could also push es push ds pop es code pop es

MATRIX

24 Sep 2004, 19:14

ASHLEY4

Joined: 28 Apr 2004
Posts: 376
Location: UK

ASHLEY4 24 Sep 2004, 20:50

Well done, but colored snow. here some star code, see if you can crack this.

Code:

;       Matt Wilhelm's Small Starfield;       30 bytes with exit,24 byte with out.model tiny.codeorg 100hstart:        mov     al,13h        int     10h        mov     bh,0a0hhidden_ret:        mov     es,bx;        dec     ch             ; for many starsgenstar:        in      al,40h          ; pop ax works (but sucks)                                ; inc ax works, and looks nice                                ; (but loses randomness)        aaascroll:        sbb     di,ax        stosb        loop    genstar        mov     ah,1            ; keycheck        int     16h        jnz     hidden_ret + 1        xor     ax,ax           ; CBW works on some systems        xchg    al,es:[di]        inc     cx        jmp     scroll          ; jmp to scroll - 1 for a different lookend start

\\\\||////
(@@)
ASHLEY4.

24 Sep 2004, 20:50

Matrix

Joined: 04 Sep 2004
Posts: 1166
Location: Overflow

Matrix 24 Sep 2004, 22:15

ASHLEY4 wrote:

Well done, but colored snow...

Hello ASHLEY4,
seems to me if you'd like white snow,
here you are :

Code:


; code by MathM
; CRACKED BY MATRIX
org 256
           mov al,12h
          int 10h
             mov dx,321
          lds cx,[bx]
a:           ;dec cx
b:               add di,dx
           jns c
               neg dx
              add dx,640
c:            xchg [di],bl
                loop b
              add bx,di
           loopnz a ;jnz a

not a big difference Smile

MATRIX

24 Sep 2004, 22:15

Matrix

Joined: 04 Sep 2004
Posts: 1166
Location: Overflow

Matrix 24 Sep 2004, 22:40

ASHLEY4 wrote:

Well done, but colored snow. here some star code, see if you can crack this.

Code:

;       Matt Wilhelm's Small Starfield
;       30 bytes with exit,24 byte with out
.model tiny

.code
org 100h

start:
        mov     al,13h
        int     10h

        mov     bh,0a0h
hidden_ret:
        mov     es,bx

;        dec     ch             ; for many stars
genstar:
        in      al,40h          ; pop ax works (but sucks)
                                ; inc ax works, and looks nice
                                ; (but loses randomness)
        aaa

scroll:
        sbb     di,ax
        stosb
        loop    genstar

        mov     ah,1            ; keycheck
        int     16h
        jnz     hidden_ret + 1

        xor     ax,ax           ; CBW works on some systems

        xchg    al,es:[di]
        inc     cx

        jmp     scroll        
  ; jmp to scroll - 1 for a different look
end start

\\\\||////
(@@)
ASHLEY4.

HERE YOU ARE ASHLEY4:

Code:

;       Matt Wilhelm's Small Starfield
;       30 bytes with exit,24 byte with out
;       CRACKED BY MATRIX, FOR ASHLEY4'S REQUEST
;       NOW ITS 29 BYTES
;.model tiny

;.code
org 100h

start:
        mov     al,13h
        int     10h

        mov     bh,0a0h
hidden_ret:
        mov     es,bx

;        dec     ch             ; for many stars
genstar:
        in      al,40h
        aaa
scroll:
        sbb     di,ax
        stosb
        loop    genstar
        in al,$60
        dec ax
        jz     hidden_ret + 1
        xor     ax,ax           ; CBW works on some systems
        xchg    al,[es:di]
        inc     cx
        jmp     scroll
  ; jmp to scroll - 1 for a different look
;end start

MATRIX

Last edited by Matrix on 24 Sep 2004, 23:04; edited 1 time in total

24 Sep 2004, 22:40

asmdemon

Joined: 18 Jan 2004
Posts: 97
Location: Virginia Beach, VA

asmdemon 24 Sep 2004, 23:04

Well, here is a change i did, after seeing optimizations others did in there compo. As far as changing/using my compo, fell free to do so. Many people i have shown this to said that i should have submitted this instead.

Description:	Hell.com modified to be a rain like demo, under 32b.	Download
Filename:	hell2.zip
Filesize:	868 Bytes
Downloaded:	441 Time(s)

_________________
It is better to be on the right side of the devil than in his path.

24 Sep 2004, 23:04

Matrix

Joined: 04 Sep 2004
Posts: 1166
Location: Overflow

Matrix 24 Sep 2004, 23:08

asmdemon wrote:

Well, here is a change i did, after seeing optimizations others did in there compo. As far as changing/using my compo, fell free to do so. Many people i have shown this to said that i should have submitted this instead.

its nice too, but its not hell anymore, its another effect.
but take care with the exit, cause' ret is still missing

MATRIX

24 Sep 2004, 23:08

Matrix

Joined: 04 Sep 2004
Posts: 1166
Location: Overflow

Matrix 24 Sep 2004, 23:13

ASHLEY4,
it has mutated from starfield to something (it doesn't exit anymore, but it is drawing the button you pressed on sreen Smile

EVOLUTION !

Code:

;       Matt Wilhelm's Small Starfield
;       30 bytes with exit,24 byte with out
;       CRACKED BY MATRIX, FOR ASHLEY4'S REQUEST
;       oh its evolution ! press a key like shift alt ctrl !
;       NOW ITS 27 BYTES
org 100h
        mov     al,13h
        int     10h
        mov     bh,0a0h
hidden_ret:
        mov     es,bx
genstar:
        in      al,40h
        aaa
scroll:
        sbb     di,ax
        stosb
        loop    genstar
        in al,$60
        dec ax
        jz     hidden_ret + 1
        ;xor     ax,ax           ; CBW works on some systems
        xchg    al,[es:di]
        inc     cx
        jmp     scroll

( it is not starfield anymore )

MATRIX

24 Sep 2004, 23:13

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