mirror of
https://github.com/scratchfoundation/scratchjr.git
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83 lines
3.7 KiB
Markdown
83 lines
3.7 KiB
Markdown
## Overview
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This is the official git repository hosting the source code for the
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[ScratchJr](http://scratchjr.org/) project.
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ScratchJr can be built both for iOS and Android.
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A pure-web version or Chrome-app version is planned to follow at some point in the future.
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Platform | Status
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-------- | -------------
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iOS | Released in App Store
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Android | Released on Google Play and Amazon store
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## Release Schedule
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As of this writing, the Android version now supports Android 4.2
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and above.
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## Architecture Overview
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The diagram below illustrates the architecture of ScratchJr and
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how the iOS (functional), Android (functional) and pure HTML5 (future)
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versions share a common client.
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## Directory Structure and Projects
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This repository has the following directory structure:
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* <tt>src/</tt> - Shared JavaScript code for iOS and Android common client. This is where most changes should be made for features, bug fixes, UI, etc.
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* <tt>editions/</tt> - Assembly directories for each "flavor" of ScratchJr. These symlink to src for common code, and could diverge in settings and assets.
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* <tt>free/</tt> - Free edition JavaScript, including all shared code for all releases
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* <tt>android/</tt> - Android port of Scratch Jr. (Java, Android Studio Projects)
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* <tt>ScratchJr/</tt> - Android Studio Project for ScratchJr Android Application
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* <tt>bin/</tt> - Build scripts and other executables
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* <tt>doc/</tt> - Developer Documentation
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* <tt>ios/</tt> - XCode project for iOS build. (Make sure to open <tt>ScratchJr.xcworkspace</tt> not <tt>ScratchJr.xcodeproj</tt>)
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## Building ScratchJr
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To build the Android version, you need to have a system equipped with Android Studio. To build the iOS version, you need to have a Mac with XCode.
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Ensure you have node and npm [installed](http://blog.npmjs.org/post/85484771375/how-to-install-npm).
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With all of the code checked out, you must install npm dependencies for bundling the JavaScript:
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* <tt>npm install</tt>
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The build caches .png files out of the .svg files to improve performance. To enable this build step, you need to install a few dependencies.
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On Ubuntu:
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* Run <tt>sudo easy_install pysvg</tt> to install python svg libraries
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* Run <tt>sudo apt-get install librsvg2-bin</tt> to install rsvg-convert
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* Run <tt>sudo apt-get install imagemagick</tt> to install ImageMagick
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On OS X:
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* Install [Homebrew](http://brew.sh).
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* Run <tt>sudo easy_install pysvg</tt> to install python svg libraries
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* Run <tt>brew install librsvg</tt> to install rsvg-convert
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* Run <tt>brew install imagemagick</tt> to install ImageMagick
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Once these are installed, select the appropriate target in XCode or the appropriate flavor/build variant in Android Studio. To build in Android Studio, open the project <tt>android/ScratchJr</tt>. To build for iOS in XCode, open <tt>ios/ScratchJr.xcworkspace</tt> as ScratchJr uses CocoaPods.
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## Where and how to make changes
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All changes should be made in a fork. Before making a pull request, ensure all changes pass our linter:
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* <tt>npm run lint</tt>
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For more information, see [CONTRIBUTING.md](CONTRIBUTING.md).
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## Code credits
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ScratchJr would not be possible without free and open source libraries, including:
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* [Snap.svg](https://github.com/adobe-webplatform/Snap.svg/)
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* [JSZip](https://github.com/Stuk/jszip)
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* [Intl.js](https://github.com/andyearnshaw/Intl.js)
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* [Yahoo intl-messageformat](https://github.com/yahoo/intl-messageformat)
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## Acknowledgments
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ScratchJr is a collaborative effort between:
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* [Tufts DevTech Research Group](http://ase.tufts.edu/devtech/)
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* [Lifelong Kindergarten group at MIT Media Lab](http://llk.media.mit.edu/)
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* [Playful Invention Company](http://www.playfulinvention.com/)
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* [Two Sigma Investments](http://twosigma.com)
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