RPG Dialogue

Mix.install([
  {:jason, "~> 1.4"},
  {:kino, "~> 0.9", override: true},
  {:youtube, github: "brooklinjazz/youtube"},
  {:hidden_cell, github: "brooklinjazz/hidden_cell"}
])

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Overview

In this exercise, you will create dialogue for an RPG (Role Playing Game).

To generate this dialogue define a Character struct with a :name, :class, and :weapon keys. Enforce that the :name key must have a value.

classDiagram
  class Character {
    name*: string
    class: string
    weapon: string
  }

Example solution

defmodule Character do
  @enforce_keys [:name]
  defstruct @enforce_keys ++ [:class, :weapon]
  
  def introduce(character) do
    "My name is #{character.name}."
  end

  def attack(character) do
    "I attack with my #{character.weapon}!"
  end

  def class(character) do
    "I am a #{character.class}"
  end

  def war_cry(character) do
    "My name is #{character.name} and I am a #{character.class}!"
  end

  def defeat(character1, character2) do
    "My name is #{character1.name} and I have defeated the #{character2.class} #{character2.name}!"
  end
end

Then implement the Character functions to generate dialogue according to the documented examples below.

defmodule Character do
  @moduledoc """
  Character

  Defines a character struct, and functions for creating character dialogue.

  iex> %Character{name: "Frodo"}
  %Character{name: "Frodo", weapon: nil, class: nil}

  The :name key is required.

  iex> %Character{name: "Frodo"}
  ** (ArgumentError) the following keys must also be given when building struct Character: [:name]
  """
  @enforce_keys [:name]
  defstruct @enforce_keys ++ [:class, :weapon]


  @doc """
  Introduce the character by name.

  ## Examples
    
    iex> Character.introduce(%Character{name: "Gimli"})
    "My name is Gimli."

    iex> Character.introduce(%Character{name: "Aragorn"})
    "My name is Aragorn."
  """
  def introduce(character) do
    "My name is #{character.name}."
  end

  @doc """
  Declare a character attack.

  ## Examples

    iex> Character.attack(%Character{name: "Gimli", weapon: "axe"})
    "I attack with my axe!"

    iex> Character.attack(%Character{name: "Aragorn", weapon: "sword"})
    "I attack with my sword!"
  """
  def attack(character) do
    "I attack with my #{character.weapon}!"
  end

  @doc """
  Declare a character's class.

  ## Examples

    iex> Character.class(%Character{name: "Gimli", class: "warrior"})
    "I am a warrior."

    iex> Character.class(%Character{name: "Aragorn", class: "ranger"})
    "I am a ranger."
  """
  def class(character) do
    "I am a #{character.class}."
  end

  @doc """
  Declare a character's name and class in a war cry.

  ## Examples

    iex> Character.war_cry(%Character{name: "Gimli", class: "warrior"})
    "My name is Gimli and I am a warrior!"

    iex> Character.war_cry(%Character{name: "Aragorn", class: "ranger"})
    "My name is Aragorn and I am a ranger!"
  """
  def war_cry(character) do
    "My name is #{character.name} and I am a #{character.class}!"
  end

  @doc """
  Declare that one character has defeated another.

  ## Examples

    iex> Character.defeat(%Character{name: "Gimli"}, %Character{name: "Aragorn", class: "ranger"})
    "My name is Gimli and I have defeated the ranger Aragorn!"

    iex> Character.defeat(%Character{name: "Aragorn"}, %Character{name: "Gimli", class: "warrior"})
    "My name is Aragorn and I have defeated the warrior Gimli!"
  """
  def defeat(character1, character2) do
    "My name is #{character1.name} and I have defeated the #{character2.class} #{character2.name}!"
  end
end

Bonus: Character Instances

Bind three variables aragorn, gandalf, and gimli to an instance of a Character struct with the following information.

classDiagram
  class aragorn {
    name: "Aragorn"
    class: "ranger"
    weapon: "sword"
  }
  class gandalf {
    name: "Gandalf"
    class: "wizard"
    weapon: "staff"
  }
  class gimli {
    name: "Gimli"
    class: "warrior"
    weapon: "axe"
  }

You may use these three structs to test your Character functions.

Example solution

aragorn = %Character{name: "Aragorn", class: "ranger", weapon: "sword"}
gandalf = %Character{name: "Gandalf", class: "wizard", weapon: "staff"}
gimli = %Character{name: "Gimli", class: "warrior", weapon: "axe"}

# Example Testing
Character.introduce(aragorn)

Enter your solution below.

aragon = %Character{name: "Aragorn", class: "ranger", weapon: "sword"}
gandalf = %Character{name: "Gandalf", class: "wizard", weapon: "staff"}
gimli = %Character{name: "Gimli", class: "warrior", weapon: "axe"}

Commit Your Progress

DockYard Academy now recommends you use the latest Release rather than forking or cloning our repository.

Run git status to ensure there are no undesirable changes. Then run the following in your command line from the curriculum folder to commit your progress.

$ git add .
$ git commit -m "finish RPG Dialogue exercise"
$ git push

We’re proud to offer our open-source curriculum free of charge for anyone to learn from at their own pace.

We also offer a paid course where you can learn from an instructor alongside a cohort of your peers. We will accept applications for the June-August 2023 cohort soon.

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