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islands_client_input
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Prompts and accepts a move in the Game of Islands.
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lib/islands/client/input/prompter.ex
defmodule Islands.Client.Input.Prompter do
alias IO.ANSI.Plus, as: ANSI
alias Islands.Client.Input.{Getter, Parser}
alias Islands.Client.State
alias Islands.Tally
# Hopefully enough time to flush any unprompted input...
@timeout_in_ms 2
@doc """
Prompts and accepts a move.
"""
@spec accept_move(State.t(), ANSI.ansilist()) :: State.t() | no_return
def accept_move(state, message \\ [])
def accept_move(state, []), do: do_accept_move(state)
def accept_move(state, message) do
:ok = Tally.summary(state.tally, state.player_id, message)
do_accept_move(state)
end
# Private functions
@spec do_accept_move(State.t()) :: State.t() | no_return
defp do_accept_move(%State{player_name: player_name} = state) do
true = flush_stdio(state)
[:light_white, "#{player_name}, your move (or help):", :reset, " "]
|> Getter.get_input(state)
|> Parser.parse_input(state)
end
@spec flush_stdio(State.t()) :: true
defp flush_stdio(%State{mode: mode, pause: pause} = _state)
when mode == :manual or pause > 10 do
flusher_pid = spawn(fn -> IO.read(:eof) end)
:ok = Process.sleep(@timeout_in_ms)
true = Process.exit(flusher_pid, :kill)
end
defp flush_stdio(_state), do: true
end