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hangman_text_client
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Text client for the Hangman Game.
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lib/hangman/text/client/interact.ex
defmodule Hangman.Text.Client.Interact do
@moduledoc """
Interacts with a client playing a _Hangman Game_.
"""
use PersistConfig
alias Hangman.{Engine, Game}
alias Hangman.Text.Client.{Player, State}
@doc """
Starts a game.
"""
@spec start :: no_return
def start do
engine_node()
|> new_game("#{node()}")
|> State.new()
|> Player.play()
end
## Private functions
@spec engine_node :: node
defp engine_node, do: get_env(:engine_node)
@spec new_game(node, Game.name()) :: Game.name() | no_return
defp new_game(engine_node, game_name) do
if Node.connect(engine_node) do
IO.puts("Connected to node #{inspect(engine_node)}...")
else
IO.puts("Cannot connect to node #{inspect(engine_node)}.")
self() |> Process.exit(:normal)
end
# Synchronizes the global name server with all nodes known to this node.
:ok = :global.sync()
# Remote procedure call to call a function on a remote node.
case :rpc.call(engine_node, Engine, :new_game, [game_name]) do
{:ok, _pid} ->
game_name
{:badrpc, :nodedown} ->
IO.puts("Hangman Engine node #{inspect(engine_node)} is down.")
self() |> Process.exit(:normal)
{:badrpc, {:EXIT, {:undef, _}}} ->
IO.puts("Hangman Engine not started on node #{inspect(engine_node)}.")
self() |> Process.exit(:normal)
error ->
exit(error)
end
end
end