Git Your Game On
Githug is designed to give you a practical way of learning git. It has a series of levels, each requiring you to use git commands to arrive at a correct answer.
Githug should work on Linux, OS X and Windows.
Githug requires Ruby 1.8.7 or higher.
You can check which version of Ruby is installed with the following command:
If ruby is not installed, follow the installation instructions on ruby-lang.org.
To install Githug, run
gem install githug
If you get a complaint about permissions, you can rerun the command with
sudo gem install githug
Starting the Game
After the gem is installed change directory to the location where you want the game-related assets to be stored.
You will be prompted to create a directory.
No githug directory found, do you wish to create one? [yn]
y (yes) to continue,
n (no) to cancel and quit Githug.
Githug has 4 game commands:
- play - The default command, checks your solution for the current level
- hint - Gives you a hint (if available) for the current level
- reset - Reset the current level or reset the level to a given name or path
- levels - List all the levels
The change log is available on the wiki. Change log
To suggest a level or create a level that has been suggested, check out the wiki.
Get yourself on the contributors list by doing the following:
- Fork the repository
- Make a level in the levels directory (covered below)
- Add your level to the LEVELS array inside
lib/githug/level.rbin a position that makes sense (the "commit" level after the "add" and "init" levels for example)
- Make sure your level works (covered below)
- Submit a pull request
- A follow-up to the level, more information on a specific command, etc.
- More levels!
Githug has a DSL for writing levels. Here is an example:
difficulty 1 description "There is a file in your folder called README, you should add it to your staging area" setup do repo.init FileUtils.touch("README") end solution do return false unless repo.status.files.keys.include?("README") return false if repo.status.files["README"].untracked true end hint do puts "You can type `git` in your shell to get a list of available git commands" end
solution are required.
You can include multiple hints like this:
hints [ "You can type `git` in your shell to get a list of available git commands", "Check the man for `git add`"]
setup will remove all files from the game folder. You do not need to include a setup method if you don't want an initial git repository (if you are testing
git init or only checking an answer.)
You can call
repo.init to initialize an empty repository.
All methods called on
repo are sent to the grit gem if the method does not exist, and you can use that for most git related commands (
Another method exists called
init_from_level and it is used like so:
setup do init_from_level end
This will copy the contents of a repository specified in the levels folder for your level. For example, if your level is called "merge" then it will copy the contents of the "merge" folder. It is recommended that you perform the following steps:
- mkdir "yourlevel"
- cd "yourlevel"
- git init
- some git stuff
- important rename ".git" to ".githug" so that it isn't treated as a submodule
- cd "../"
- git add "yourlevel"
After doing this, your level should be able to copy the contents from that git repository and use those for your level. See the "blame" level for an example of this.
The easiest way to test a level is:
- Change into your git_hug repository
githug reset PATH_TO_YOUR_LEVEL
- Solve the level
githug test PATH_TO_YOUR_LEVEL
Please note that the
githug test command can be run as
githug test --errors to get an error stack trace from your solve method.
It would be ideal if you add an integration test for your level. These tests live in
spec/githug_spec and must be run in order. If you add a level but do not add a test, please add a simple
skip_level test case similar to the