```ruby
class PickupCards
  attr_reader :errors

  def initialize(player, round)
    @player = player
    @round  = round
    @errors = []
  end

  def call
    @round.game.with_lock do
      validate_cards_available
      pickup_card if errors.none?
    end

    errors.none?
  end

  private

  # def validate_cards_available
  def validate_cards_available
    errors << "no cards in deck" if @round.deck.none?
  end

  def pickup_card
    card = @round.deck.pickup
    @player.pickup!(card)
  end

  # TODO increment round fool!
end
```

Refactor PickupCards into a struct for simplicity
user
```ruby
class PickupCards < Struct.new(:player, :round, :pickups)
  def call
    round.game.with_lock do
      validate_cards_available
      pickup_card if errors.none?
    end

    errors.none?
  end

  def errors
    @errors ||= []
  end

  private

  def validate_cards_available
    errors << "no cards in deck" if round.deck.none?
  end

  def pickup_card
    card = round.deck.pickup
    player.pickup!(card)
  end

  # TODO increment round fool!
end
```
assistant