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Choosing a Hero

Choosing a Hero

Build the functionality for the player to choose a hero.

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After the game lists the heroes, the player must type a number to choose one. Let’s build that functionality. First, we need to generate a question with the numbers that the player can choose, get the player’s input, parse it, and select the corresponding hero. Let’s improve the lib/dungeon_crawl/cli/hero_choice.ex with the following code:

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def start do
    Shell.cmd("clear")
    Shell.info("Start by choosing your hero:")
    heroes = DungeonCrawl.Heroes.all()
    find_hero_by_index = &Enum.at(heroes, &1)
    heroes
    |> Enum.map(&(&1.name))
    |> display_options
    |> generate_question
    |> Shell.prompt
    |> parse_answer
    |> find_hero_by_index.()
    |> confirm_hero
end

The pipeline of functions says to take the heroes’ names, display them, generate a question, ask the user for input, parse the user’s answer, find the corresponding hero, and confirm the player choice. The pipeline starts with a list of heroes and ends with the chosen hero. So, after listing the heroes, we must implement the generate_question/1 function: ...