Functional Web Development with Elixir, OTP, and Phoenix

Putting the Pieces Together

Now that we have all the pieces assembled, let’s see how they all work together in IEx. We can start by aliasing the Game and GameSupervisor modules:

iex> alias IslandsEngine.{Game, GameSupervisor}
[IslandsEngine.Game, IslandsEngine.GameSupervisor]

Now we can use the GameSupervisor.start_game/1 function to start a new game:

iex> {:ok, game} = GameSupervisor.start_game("Hopper")
{:ok, #PID<0.119.0>}

Note that the PID is number 119. If we generate a via tuple for the first player’s name and check its PID with GenServer.whereis/1, it should be the same:

iex> via = Game.via_tuple("Hopper")
{:via, Registry, {Registry.Game, "Hopper"}}

iex> GenServer.whereis(via) ...