Scratch

somelia · 2010-04-02 14:55:04

First, download the Scratch Source Code, or hack your copy of 1.4. (If you don't have 1.4, download the source code.)

Shift-click the loop in the "R" in the Scratch Logo.

Select "Turn Fill-screen off."

Click on the gray...
Select open from the menu that pops up...
Then browser.

Our Squeak programming goes in here.

First, follow this path:

Scratch-Objects,
ScratchSpriteMorph,
block specs,
blockspecs.

Then, find the "next costume" in the "looks" category.

Put beside it:

Code:

 ('previous costume' #- #prevCostume)

Right-click...
...and accept.

If it asks for you initials, type them in. (Or, if you want, type in Blah, blah blah.)

Now you have the block!

But...it doesn't work.

We need to call a function.

Switch to the "instance" side.

Then, follow this path:

ScriptableScratchMorph,
looks ops.
Then, type in

Code:

 prevCostume
    self costumeIndex: self costumeIndex - 1

You are done! The block works now!

nXIII · 2010-04-02 16:45:54

This is a pretty pointless block. Just use 'switch to costume [costume # - 1]'. Do you really need THAT block to be a couple milliseconds faster? Reverse the order of the costumes!

midnightleopard · 2010-04-02 17:13:47

I didn't get 'block specs'

somelia · 2010-04-02 17:55:16

Are you using 1.3 or 1.4, midnightleopard?

nXIII, doesn't this look prettier than switch to costume costume-1?

gershmer · 2010-04-02 19:01:33

somelia wrote:
Are you using 1.3 or 1.4, midnightleopard?

nXIII, doesn't this look prettier than switch to costume costume-1?

Not really.

Anyone who really needs this could use BYOB.

somelia · 2010-04-02 19:06:34

True, but...i just felt like making this. tongue

Paddle2See · 2010-04-02 19:16:46

nXIII wrote:
This is a pretty pointless block. Just use 'switch to costume [costume # - 1]'. Do you really need THAT block to be a couple milliseconds faster? Reverse the order of the costumes!

I think it's a great block - I've often wished we had one, just for the symmetry. And the instructions are so clearly written...I might even give it a try myself!

Thanks for taking the time to write this up so clearly and share it with us. That's what makes Scratch such a great community - people willing to share their interests smile

AnonymousTom · 2010-04-02 20:26:13

Interesting, but It really isn't hacking. It's just modding the software. Great job finding how to do it.

urhungry · 2010-04-03 19:25:48

nice block. i added it to my scratch mod. thanks!

technoguyx · 2010-04-03 23:14:22

nXIII wrote:
This is a pretty pointless block. Just use 'switch to costume [costume # - 1]'. Do you really need THAT block to be a couple milliseconds faster? Reverse the order of the costumes!

You'd probably think we only need 1 "rotate X degrees" too. tongue But some users might not be able to figure that out by themselves, so adding it might be good...

midnightleopard · 2010-04-04 12:59:47

somelia wrote:
Are you using 1.3 or 1.4, midnightleopard?

nXIII, doesn't this look prettier than switch to costume costume-1?

1.4

somelia · 2010-04-04 13:23:31

Did you shift-click the loop in the "r"?

midnightleopard · 2010-04-05 21:47:57

somelia wrote:
Did you shift-click the loop in the "r"?

you betcha

jamopop · 2010-04-08 14:43:15

somelia wrote:
First, download the Scratch Source Code, or hack your copy of 1.4. (If you don't have 1.4, download the source code.)

Shift-click the loop in the "R" in the Scratch Logo.

Select "Turn Fill-screen off."

Click on the gray...
Select open from the menu that pops up...
Then browser.

Our Squeak programming goes in here.

First, follow this path:

Scratch-Objects,
ScratchSpriteMorph,
block specs,
blockspecs.

Then, find the "next costume" in the "looks" category.

Put beside it:
Code:
 ('previous costume' #- #prevCostume)
Right-click...
...and accept.

If it asks for you initials, type them in. (Or, if you want, type in Blah, blah blah.)

Now you have the block!

But...it doesn't work.

We need to call a function.

Switch to the "instance" side.

Then, follow this path:

ScriptableScratchMorph,
looks ops.
Then, type in
Code:
 prevCostume
    self costumeIndex: self costumeIndex - 1
You are done! The block works now!

It broke my scratch can't access look's

somelia · 2010-04-08 16:52:20

jamopop wrote:
somelia wrote:
First, download the Scratch Source Code, or hack your copy of 1.4. (If you don't have 1.4, download the source code.)

Shift-click the loop in the "R" in the Scratch Logo.

Select "Turn Fill-screen off."

Click on the gray...
Select open from the menu that pops up...
Then browser.

Our Squeak programming goes in here.

First, follow this path:

Scratch-Objects,
ScratchSpriteMorph,
block specs,
blockspecs.

Then, find the "next costume" in the "looks" category.

Put beside it:
Code:
 ('previous costume' #- #prevCostume)
Right-click...
...and accept.

If it asks for you initials, type them in. (Or, if you want, type in Blah, blah blah.)

Now you have the block!

But...it doesn't work.

We need to call a function.

Switch to the "instance" side.

Then, follow this path:

ScriptableScratchMorph,
looks ops.
Then, type in
Code:
 prevCostume
    self costumeIndex: self costumeIndex - 1
You are done! The block works now!
It broke my scratch can't access look's

Be sure to follow the tutorial carefully. Re-install Scratch, and then try it again. Tell me if anything happens.

My Scratch broke when I activated Mesh, then I realized I had made a tiny mistake.

midnightleopard · 2010-04-08 18:58:00

kay worx now

laser100 · 2010-04-08 19:46:01

guess what. replace the
'previous costume' #- #prevCostume)
previous costume with whatever you want. I put in lalala five, followed the other steps, and the block is called lalala five, but it carries out the previous costume function.

lol

cds56 · 2010-04-08 20:45:51

laser100 wrote:
guess what. replace the
'previous costume' #- #prevCostume)
previous costume with whatever you want. I put in lalala five, followed the other steps, and the block is called lalala five, but it carries out the previous costume function.

Ya, cause 'previous costume' is just the label big_smile

incredible to play around with isn't it

Try renaming ALL of your blocks ::::::

pika100chu · 2010-04-09 12:29:58

How do you save the block? When I exit Scratch, it vanishes and I have to make it all over again. Can you help? hmm

pika100chu · 2010-04-09 15:29:17

Nevermind, I figured out how.

TheGameMaster1231 · 2010-04-09 15:56:23

This Is A Great Tutorial! It's Really Simple To Make, But It's Very Good. Good Job! big_smile

somelia · 2010-04-09 17:11:12

TheGameMaster1231 wrote:
This Is A Great Tutorial! It's Really Simple To Make, But It's Very Good. Good Job!

Thank you!

Scratch

archived forums

#1 2010-04-02 14:55:04

The Real Previous Costume Block

Code:

Code:

#2 2010-04-02 16:45:54

Re: The Real Previous Costume Block

#3 2010-04-02 17:13:47

Re: The Real Previous Costume Block

#4 2010-04-02 17:55:16

Re: The Real Previous Costume Block

#5 2010-04-02 19:01:33

Re: The Real Previous Costume Block

somelia wrote:

#6 2010-04-02 19:06:34

Re: The Real Previous Costume Block

#7 2010-04-02 19:16:46

Re: The Real Previous Costume Block

nXIII wrote:

#8 2010-04-02 20:26:13

Re: The Real Previous Costume Block

#9 2010-04-03 19:25:48

Re: The Real Previous Costume Block

#10 2010-04-03 23:14:22

Re: The Real Previous Costume Block

nXIII wrote:

#11 2010-04-04 12:59:47

Re: The Real Previous Costume Block

somelia wrote:

#12 2010-04-04 13:23:31

Re: The Real Previous Costume Block

#13 2010-04-05 21:47:57

Re: The Real Previous Costume Block

somelia wrote:

#14 2010-04-08 14:43:15

Re: The Real Previous Costume Block

somelia wrote:

Code:

Code:

#15 2010-04-08 16:52:20

Re: The Real Previous Costume Block

jamopop wrote:

somelia wrote:

Code:

Code:

#16 2010-04-08 18:58:00

Re: The Real Previous Costume Block

#17 2010-04-08 19:46:01

Re: The Real Previous Costume Block

#18 2010-04-08 20:45:51

Re: The Real Previous Costume Block

laser100 wrote:

#19 2010-04-09 12:29:58

Re: The Real Previous Costume Block

#20 2010-04-09 15:29:17

Re: The Real Previous Costume Block

#21 2010-04-09 15:56:23

Re: The Real Previous Costume Block

#22 2010-04-09 17:11:12

Re: The Real Previous Costume Block

TheGameMaster1231 wrote:

Board footer