Games: Score Tracker

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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Setup

Ensure you type the ea keyboard shortcut to evaluate all Elixir cells before starting. Alternatively you can evaluate the Elixir cells as you read.

Games: Score Tracker

Previously you created a Score Tracker GenServer which can track and add to a score.

You’re going to re-create this score tracker in a Games.ScoreTracker module. You may use this Games.ScoreTracker module in future exercises to keep track of a score.

{:ok, pid} = Games.ScoreTracker.start_link([])
Games.ScoreTracker.add(pid, 10)
10 = Games.ScoreTracker.get(pid)
Games.ScoreTracker.add(pid, 20)
30 = Games.ScoreTracker.get(pid)

Implement the Games.ScoreTracker in your existing Games project. Create a full test suite to ensure it behaves as expected.

Mark As Completed

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

save_name =
  case Path.basename(__DIR__) do
    "reading" -> "games_score_tracker_reading"
    "exercises" -> "games_score_tracker_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 games-score-tracker-exercise
$ git add .
$ git commit -m "finish games score tracker exercise"
$ git push origin games-score-tracker-exercise

Create a pull request from your games-score-tracker-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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