Scratch 2.0

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Scratch 2.0
Scratch 2.0
Release Date 5/9/2013
Programming language Flash
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Scratch 2.0

Custom blocks

Scratch 2.0

The vector paint editor

Scratch 2.0

Cloud variables

Scratch 2.0, also known as Scratch 2,[1] is the second, current major version of Scratch, following Scratch 1.4. It features a redesigned editor and website, and it allows anyone to edit projects directly from their web browser as well as in an offline editor.

It went into public beta on January 28, 2013,[2] and it was officially released on May 9, 2013. The 2.0 beta site and the old 1.4 site were both taken down from May 6 to May 8 so the Scratch Team could move the projects across.[3]

历史

Main article: Development of Scratch 2.0

Scratch 2.0 was announced by andresmh on the Scratch Forums in January 2010. The first released experiment by the Scratch Team as part of 2.0’s development was the Experimental Viewer, in August 2010. Later, in 2011, a beta Flash Player was released for projects, which logged-in users could choose to use. In 2012, this was replaced by a version of the alpha editor; this version was made the default for all users that October.

In May 2011, the first known version of the project editor, the prealpha, was released to a limited audience at Scratch Day @ MIT. A little while after this, the Scratch Team started posting updates, called Scratch 2.0 Progress Reports, to their blog. The new website and redesigned project editor, by then in the alpha stage (at alpha.scratch.mit.edu), were premiered for a few days to the public for Scratch Day 2012, a year later. Over the rest of 2012, people were brought in to test this version: community moderators and selected educators; Collab Counselors, former curators, Scratch Design Studio curators, TBG moderators, and a group of 500 volunteers. Some users were also able to infiltrate and use the program due to a glitch.[4]

In December 2012, the public beta was announced to begin on January 28, 2013. It was available at beta.scratch.mit.edu from then on until its full release, upon which it replaced the previous website.

On May 13, 2014, the source code for Scratch 2.0 was released.[5] It is available at LLK/scratch-flash on GitHub.

离线编辑器

Main article: Offline Editor

The beta version of the offline Scratch 2.0 editor was released on August 26 and can be downloaded here. It has very few differences from the online editor, most notably, though, the lack of the backpack. The offline editor receives updates without having to reinstall the entire program.

特色

Scratch has been completely rewritten in Adobe Flash for version 2.0 but still runs projects from older versions of Scratch. It is still completely free and without ads. Due to the new features and different programming language, Scratch 2.0 projects are saved in the .sb2 format instead of the previous .sb format. However, projects uploaded from Scratch 1.4 can still be downloaded from the project page in the .sb format. Scratch 2.0 features many new additions to both the program and website.

Scratch 2.0 Caution: Once a project is saved in the Scratch 2.0 editor, its format will be adjusted to .sb2 and cannot be reverted without the use of an external program. This means it cannot open in Scratch 1.4.

New Features

Scratch 2.0 has introduced several new features:

  • Backdrop Name block
  • Backpack for transporting sprites, costumes, and scripts project-to-project
  • Cloning sprites (limit of 300 as of now)
  • Cloud Data (variables stored on the website)
  • Custom Blocks[6]
  • Customizable User Pages
  • Following System
  • Project Notes and Credits are separate from Instructions
  • Redesigned comment replies: @username shows who you’re replying to
  • Show or hide lists
  • Sound Editor
  • Studios which replace Galleries, but in My Stuff the url stays the same (it is still http://scratch.mit.edu/mystuff/#galleries)
  • Time blocks: Current () and Days Since 2000
  • Use the at symbol (@username) in a comment to link to a user’s profile page
  • Username Block
  • Vector Editor, as well as a Bitmap Editor for the Paint Editor
  • Video Sensing
  • When Backdrop Switches to () block
  • Zooming in and out of the scripts area
  • Record Project Video
  • Student and Teacher Accounts

Upcoming Features

The following Scratch 2.0 features are not yet finished nor released yet:

  • Cloud variables that can store strings
  • Cloud lists
  • Shapes library in the paint editor[7]

Beta criticism

Early in 2013 during the beta, some people disliked Scratch 2.0. They complained of a bad paint editor[8][9] and confusing editor.[10] After the final release, the criticism died down as people got used to it.

Known bugs

One of the bugs in Scratch 2.0 is the ability to follow yourself and anyone who doesn’t have any projects shared. To follow anyone, open the developer menu (Ctrl+⇧ Shift+I on Chrome on Windows) then go to the console tab. Then type in

$.ajax({type: "PUT",url: "https://scratch.mit.edu/site-api/users/followers/(Who_you_want_to_follow)/add/",data: {usernames: Scratch.INIT_DATA.LOGGED_IN_USER.model.username}})

and press enter. You should now be following whoever goes by the username you entered. This also allowed you to follow Kaj, but was fixed later.

Another oversight is that projects that are a few hours old still appear in the Recently Shared Projects.

Examples of New Features and Blocks

define Custom Block say [This is a custom block.]  Custom Block (☁ Cloud Data) set [☁ Cloud Data v] to ()  change [☁ Cloud Data v] by ()

Gallery

See also: Category:Scratch 2.0 Images

Trivia

  • The Scratch 2.0 Overview video uses a looped portion of “Scratch Redux” by Ant Neely.

参考

  1. iTweak0r. (19/4/2015). “They renamed Scratch 2.0 to Scratch 2 a while ago.” https://scratch.mit.edu/discuss/topic/108808/?page=1#post-954644
  2. Lightnin. (13/12/2012). “Scratch 2.0 will be open for beta testing starting January 28th![title]” ar-topic:111325
  3. Lightnin. (24/4/2013). “Both the old and new Scratch websites will be closed for 3 days, on May 6, 7, 8 .” http://scratch.mit.edu/discuss/topic/4130/
  4. Wes64. (17/8/2013). “Yes, I did “infiltrate”, and in fact I was able to do so right up until I was actually given the beta password after my curatorship. I even made projects and saved them to my machine.” https://scratch.mit.edu/discuss/post/114120/
  5. scimonster. (13/5/2014). “The ST has, at long last, open-sourced the Flash player!” http://scratch.mit.edu/discuss/topic/38755/
  6. Bernd Gärtner. (?/4/2012). “I’m really excited about custom blocks in Scratch 2.0!” http://scratched.media.mit.edu/discussions/scratch-20/custom-block-types
  7. taranir. (6/6/2013). “Media library for shapes.” http://scratch.mit.edu/discuss/post/48960/
  8. Rocker98585. (28/3/2013). “I hate the new Paint Editor. It disgusts me to the very top.” https://scratch.mit.edu/discuss/topic/3510/
  9. unicorn0125. (1/2/2013). “I can’t draw correctly on 2.0!!! It is WAYYYY harder than 1.4.” https://scratch.mit.edu/discuss/post/9737/
  10. pinkkoala25. (3/2/2013). “The editor is so confusing!” https://scratch.mit.edu/discuss/topic/1819/

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