Rubix Cube

Mix.install([
  {:jason, "~> 1.4"},
  {:kino, "~> 0.8.0", override: true},
  {:youtube, github: "brooklinjazz/youtube"},
  {:hidden_cell, github: "brooklinjazz/hidden_cell"}
])

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Rubix’s Cube

You are going to create a Rubix Cube application.

Rubix’s Cubes are a toy with six sides. Each side has nine colored squares on it. Players rotate columns and rows on the cube with the goal of having each side with a single matching color.

Create a RubixCube supervised mix project.

mix new rubix_cube --sup

Your RubixCube project should have the following features:

Requirements

• Represent the Rubix’s Cube as data in a process.
• Start the Rubix’s Cube process under a supervisor.
• Horizontally rotate a row of the cube to the right and left
• Vertically rotate a column of the cube up and down.
• Determine if a Rubix’s Cube is solved.
• Save the state of the Rubix’s Cube using the File system.
• Load the previous state of the Rubix’ Cube using the File system when starting the application.

Mark As Completed

file_name = Path.basename(Regex.replace(~r/#.+/, __ENV__.file, ""), ".livemd")

save_name =
  case Path.basename(__DIR__) do
    "reading" -> "rubix_cube_reading"
    "exercises" -> "rubix_cube_exercise"
  end

progress_path = __DIR__ <> "/../progress.json"
existing_progress = File.read!(progress_path) |> Jason.decode!()

default = Map.get(existing_progress, save_name, false)

form =
  Kino.Control.form(
    [
      completed: input = Kino.Input.checkbox("Mark As Completed", default: default)
    ],
    report_changes: true
  )

Task.async(fn ->
  for %{data: %{completed: completed}} <- Kino.Control.stream(form) do
    File.write!(
      progress_path,
      Jason.encode!(Map.put(existing_progress, save_name, completed), pretty: true)
    )
  end
end)

form

Commit Your Progress

Run the following in your command line from the curriculum folder to track and save your progress in a Git commit. Ensure that you do not already have undesired or unrelated changes by running git status or by checking the source control tab in Visual Studio Code.

$ git checkout -b rubix-cube-exercise
$ git add .
$ git commit -m "finish rubix cube exercise"
$ git push origin rubix-cube-exercise

Create a pull request from your rubix-cube-exercise branch to your solutions branch. Please do not create a pull request to the DockYard Academy repository as this will spam our PR tracker.

DockYard Academy Students Only:

Notify your teacher by including @BrooklinJazz in your PR description to get feedback. You (or your teacher) may merge your PR into your solutions branch after review.

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