Games: Rock Paper Scissors

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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Games: Rock Paper Scissors

In your existing Games project, you’re going to create a rock paper scissors game where players will play against an AI which randomly chooses rock, paper, or scissors.

You should be able to start your project by running the following from the game folder in the command line.

iex -S mix

Then you can start the rock paper scissors game with a Games.RockPaperScissors module. The game should prompt the user for a choice of "rock", "paper", or "scissors".

iex> Games.RockPaperScissors.play()
(rock/paper/scissors): scissors

The game should generate a random AI choice of "rock" , "paper", or "scissors", then prompt the user with feedback if they win, lose, or draw.

# randomly generated paper for the opponent
(rock/paper/scissors): scissors
"You win! scissors beats paper."

# randomly generated scissors for the opponent
(rock/paper/scissors): paper
"You lose! scissors beats paper."

# randomly generated rock for the opponent
(rock/paper/scissors): rock
"It's a tie!"

Mark As Completed

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

save_name =
  case Path.basename(__DIR__) do
    "reading" -> "games_rock_paper_scissors_reading"
    "exercises" -> "games_rock_paper_scissors_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-rock-paper-scissors-exercise
$ git add .
$ git commit -m "finish games rock paper scissors exercise"
$ git push origin games-rock-paper-scissors-exercise

Create a pull request from your games-rock-paper-scissors-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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