Scratch

I will leave the forum thing ATM as I only use this one!
And yes midnightleopard you can join if you commit to what you say.

Ok lets get started on the .sb decoding. Lets do this in any language to start off with, then convert it to JScript HTML and PHP

Alright! So, how are we going to approach this? we should start one step at a time. Let's start with decoding a sprite. I am not sure what you mean. So open a .sb file in notepad? is that what we're decoding?
if so, we should start by making a project with absolutely nothing in it. No sprites, costumes, blocks, sounds, or notes. Then we should add a single pixel dot sprite and see the difference in the code. Then we should keep doing that until we can decode how sprites are coded in the file. We could then do the same thing but with a sound, then a block, then a script.
Better ideas anyone?

ScratchReallyROCKS wrote:

midnightleopard wrote:

Alright! So, how are we going to approach this? we should start one step at a time. Let's start with decoding a sprite. I am not sure what you mean. So open a .sb file in notepad? is that what we're decoding?
if so, we should start by making a project with absolutely nothing in it. No sprites, costumes, blocks, sounds, or notes. Then we should add a single pixel dot sprite and see the difference in the code. Then we should keep doing that until we can decode how sprites are coded in the file. We could then do the same thing but with a sound, then a block, then a script.
Better ideas anyone?

The problem is, .sb files are binary, so they're not readable in notepad.

I'd recommend notepad++, a free, open-source text editor with syntax highlighting and lots of other amazing stuff! 

ScratchReallyROCKS wrote:

nXIII wrote:

ScratchReallyROCKS wrote:

The problem is, .sb files are binary, so they're not readable in notepad.

I'd recommend notepad++, a free, open-source text editor with syntax highlighting and lots of other amazing stuff! 

Actually, you see the scripts when you scroll down to the bottom of a scratch project in notepad!

I still recommend it! 
I'm now converting a 500-line Java file to JavaScript. Not as easy as it might sound.

EDIT: I was doing that, now I'm going back to converting it to PHP.

Last edited by nXIII (2010-09-29 19:23:17)

cool, but my notepad opens .sb files. It's all crazy wierd unicode characters. nXIII, are you on the team?

midnightleopard wrote:

So scripts are at the bottom? Lemme ask some questions. What are we doing? what .sb file are we decoding? I've been opening it with notepad. Should I be doing something else?

Notepad won't work. Try nXIII's suggestion.

Ill have a look at whats saved.

If notepad++ is open source, look at its source code and find out what it does.

Here:

Bottom of Scratch File wrote:

Hat Block
¯¯¯¯¯¯¯¯¯
EventHatMorph        Scratch-StartClicked    = Flag
KeyEventHatMorph    space            = Key 'space' Hat
MouseClickEventHatMorph    Scratch-MouseClickEvent    = When ### clicked
EventHatMorph        {input}            = When {input} recieved

C Blocks
¯¯¯¯¯¯¯¯
doForever                    = forever
doRepeat                    = repeat
doForeverIf                    = forever if
doIf                        = if
doUntil                        = repeat until

Branch Blocks
¯¯¯¯¯¯¯¯¯¯¯¯¯
doIfElse                    = if else


< blocks >
¯¯¯¯¯¯¯¯¯
=    {input1}    {input2}        = <{input1}={input2}>
<    {input1}    {input2}        = <{input1}<{input2}>
>    {input1}    {input2}        = <{input1}>{input2}>

list:contains:    {input2}            = <list ## contains {input2}>
mousePressed                    = <mouse pressed>
keyPressed:        {input1}        = <key {input1} pressed>
isLoud                        = < loud? >
sensorPressed:        {input1}        = <sensor {input1}?>

< < > blocks < > >
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
&    blocktype1 {input1}{input2} (if not blocktype2 = blocktype1 then blocktype2) {input3}{input4} = < < > and < > >
|    blocktype1 {input1}{input2} (if not blocktype2 = blocktype1 then blocktype2) {input3}{input4} = < < > or < > >
not    blocktype1 {input1}{input2}                                      = < not <> >

( blocks )
¯¯¯¯¯¯¯¯¯
+                        = ( + )
-                        = ( - )
*                        = ( * )
/                        = ( / )
\\                        = ( mod )

randomFrom:to:                    = (pick random ## to ##)
concatenate:with:    {input1} {input2}    = (join {input1} with {input2})
letter:of:        {input2}        = (letter ## of {input2})
stringLength:        {input1}        = (length of {input1})
volume                        = (volume)
tempo                        = (tempo)

timer                        = (timer)
soundLevel                    = (loudness)
sensor:            {input1}        = ( {input1} sensor value)
answer                        = (answer)

mouseX                        = (mouse X)
mouseY                        = (mouse Y)

backgroundIndex                    = (background no.)

readVariable                    = (read var ##)
contentsOfList:                    = (read list ##)
getLine:ofList:                    = (read line ## of list ##)
lineCountOfList:                = (no. lines of list ##)

[ blocks ]
¯¯¯¯¯¯¯¯¯
wait:elapsed:from:                = wait block
broadcast:    {input1}            = broadcast {input1}
doBroadcastAndWait    {input1}        = broadcast and wait {input1}
doWaitUntil    (and same rule as & block)    = wait until
doReturn                    = stop script
stopAll                        = stop all

doAsk    {input1}                = ask {input1} and wait
timerReset                    = reset timer
showBackground:                    = change background to
nextBackground                    = next background
changeGraphicEffect:by:    {name to change}    = change effect {name to change} by ##
setGraphicEffect:to: {name to change}        = set effect {name to change} to ##
filterReset                    = clear effects

playSound:                    = play sound ##
doPlaySoundAndWait                = play sound ## and wait
stopAllSounds                    = stop all sounds
drum:duration:elapsed:from:            = play drum ## for ##
rest:elapsed:from:                = rest ## beats
noteOn:duration:elapsed:from:            = play note ## for ##
midiInstrument:                    = set instrument to ##
changeVolumeBy:                    = change volume by ##
setVolumeTo:                    = set volume to ##
changeTempoBy:                    = change tempo by ##
setTempoTo:                    = set tempo to ##

clearPenTrails                    = clear

setVar:to: {input2}                = set var ## to {input2}
changeVar:by:                    = change var ## by ##
showVariable:                    = show var ##
hideVariable:                    = hide var ##

append:toList: {input1}                = add {input1} to list ##
deleteLine:ofList:                = delete line ## of list ##
insert:at:ofList:    {input1}        = insert {input1} at ## of list ##
setLine:ofList:to:    {input3}        = replace line ## of list ## with {input3}

Last edited by johnnydean1 (2010-09-30 17:05:19)

johnnydean1 wrote:

Here:

Bottom of Scratch File wrote:

Hat Block
¯¯¯¯¯¯¯¯¯
EventHatMorph        Scratch-StartClicked    = Flag
KeyEventHatMorph    space            = Key 'space' Hat
MouseClickEventHatMorph    Scratch-MouseClickEvent    = When ### clicked
EventHatMorph        {input}            = When {input} recieved

C Blocks
¯¯¯¯¯¯¯¯
doForever                    = forever
doRepeat                    = repeat
doForeverIf                    = forever if
doIf                        = if
doUntil                        = repeat until

Branch Blocks
¯¯¯¯¯¯¯¯¯¯¯¯¯
doIfElse                    = if else


< blocks >
¯¯¯¯¯¯¯¯¯
=    {input1}    {input2}        = <{input1}={input2}>
<    {input1}    {input2}        = <{input1}<{input2}>
>    {input1}    {input2}        = <{input1}>{input2}>

list:contains:    {input2}            = <list ## contains {input2}>
mousePressed                    = <mouse pressed>
keyPressed:        {input1}        = <key {input1} pressed>
isLoud                        = <loud?>
sensorPressed:        {input1}        = <sensor {input1}?>

< < > blocks < > >
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
&    blocktype1 {input1}{input2} (if not blocktype2 = blocktype1 then blocktype2) {input3}{input4} = < < > and < > >
|    blocktype1 {input1}{input2} (if not blocktype2 = blocktype1 then blocktype2) {input3}{input4} = < < > or < > >
not    blocktype1 {input1}{input2}                                      = < not <> >

( blocks )
¯¯¯¯¯¯¯¯¯
+                        = ( + )
-                        = ( - )
*                        = ( * )
/                        = ( / )
\\                        = ( mod )

randomFrom:to:                    = (pick random ## to ##)
concatenate:with:    {input1} {input2}    = (join {input1} with {input2})
letter:of:        {input2}        = (letter ## of {input2})
stringLength:        {input1}        = (length of {input1})
volume                        = (volume)
tempo                        = (tempo)

timer                        = (timer)
soundLevel                    = (loudness)
sensor:            {input1}        = ( {input1} sensor value)
answer                        = (answer)

mouseX                        = (mouse X)
mouseY                        = (mouse Y)

backgroundIndex                    = (background no.)

readVariable                    = (read var ##)
contentsOfList:                    = (read list ##)
getLine:ofList:                    = (read line ## of list ##)
lineCountOfList:                = (no. lines of list ##)

[ blocks ]
¯¯¯¯¯¯¯¯¯
wait:elapsed:from:                = wait block
broadcast:    {input1}            = broadcast {input1}
doBroadcastAndWait    {input1}        = broadcast and wait {input1}
doWaitUntil    (and same rule as & block)    = wait until
doReturn                    = stop script
stopAll                        = stop all

doAsk    {input1}                = ask {input1} and wait
timerReset                    = reset timer
showBackground:                    = change background to
nextBackground                    = next background
changeGraphicEffect:by:    {name to change}    = change effect {name to change} by ##
setGraphicEffect:to: {name to change}        = set effect {name to change} to ##
filterReset                    = clear effects

playSound:                    = play sound ##
doPlaySoundAndWait                = play sound ## and wait
stopAllSounds                    = stop all sounds
drum:duration:elapsed:from:            = play drum ## for ##
rest:elapsed:from:                = rest ## beats
noteOn:duration:elapsed:from:            = play note ## for ##
midiInstrument:                    = set instrument to ##
changeVolumeBy:                    = change volume by ##
setVolumeTo:                    = set volume to ##
changeTempoBy:                    = change tempo by ##
setTempoTo:                    = set tempo to ##

clearPenTrails                    = clear

setVar:to: {input2}                = set var ## to {input2}
changeVar:by:                    = change var ## by ##
showVariable:                    = show var ##
hideVariable:                    = hide var ##

append:toList: {input1}                = add {input1} to list ##
deleteLine:ofList:                = delete line ## of list ##
insert:at:ofList:    {input1}        = insert {input1} at ## of list ##
setLine:ofList:to:    {input3}        = replace line ## of list ## with {input3}

whats this then? 

midnightleopard wrote:

Daffy22 wrote:

whats this then? 

Yeah what is that code? it's all the blocks in scratch not just scripts.

Well if you open a scratch project in Notepad and scroll down to the bottom you see all your blocks. This is a conversion chart that I made that can turn that into normal blocks.

Last edited by johnnydean1 (2010-09-30 17:02:26)