Pokemon Protocols

Mix.install([
  {:kino, github: "livebook-dev/kino", override: true},
  {:kino_lab, "~> 0.1.0-dev", github: "jonatanklosko/kino_lab"},
  {:vega_lite, "~> 0.1.4"},
  {:kino_vega_lite, "~> 0.1.1"},
  {:benchee, "~> 0.1"},
  {:ecto, "~> 3.7"},
  {:math, "~> 0.7.0"},
  {:faker, "~> 0.17.0"},
  {:utils, path: "#{__DIR__}/../utils"},
  {:tested_cell, git: "https://github.com/BrooklinJazz/tested_cell"}
])

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Overview

Pokemon are creatures which have the ability to evolve into more powerful versions of themselves.

For example, Charmander evolves into Charmeleon, and Charmeleon evolves into Charizard.

flowchart LR
  c1[Charmander]
  c2[Charmeleon]
  c3[Charizard]
  c1 --> c2 --> c3

In this exercise, you will create an Evolvable protocol which returns the evolved version of a Pokemon.

Evolvable.evolve(%Charmander{})
%Charmeleon{hp: 58, attack: 64: defense: 58}

Pokemon Structs

In the Elixir cell below, Using the stats from Pokemon DB, you’re going to create a struct that represents each of the following Pokemon.

• Charmander
• Charmeleon
• Charizard

Each struct should include the following.

• :hp
• :attack
• :defense

You can use the base values as defaults from Pokemon DB as shown in the following diagram.

classDiagram
  class Charmander {
    hp: 39
    attack: 52
    defense: 43
  }

  class Charmeleon {
    hp: 58
    attack: 64
    defense: 58
  }

  class Charizard {
    hp: 78
    attack: 84
    defense: 78
  }

defmodule Charmander do
end

defmodule Charmeleon do
end

defmodule Charizard do
end

Utils.feedback(:pokemon_evolution_structs, [Charmander, Charmeleon, Charizard])

Evolvable Protocol

In the Elixir cell below, create an Evolvable protocol with an evolve/1 function.

A Charmander struct should return a new Charmeleon struct.

Evolvable.evolve(%Charmander{})
%Charmeleon{hp: 58, attack: 64: defense: 58}

A Charmeleon struct should return a new Charizard struct.

Evolvable.evolve(%Charmeleon{})
%Charizard{hp: 78, attack: 84: defense: 78}

defprotocol Evolvable do
end

Utils.feedback(:evolvable, [Evolvable, Charmander, Charmeleon, Charizard])

Commit Your Progress

Run the following in your command line from the project folder to track and save your progress in a Git commit.

$ git add .
$ git commit -m "finish pokemon protocols exercise"