class Creature < ApplicationRecord
  scope :alive, -> { where('health_points > 0') }

  enum :size, [:small, :big, :giant]

  def to_label
    "#{name} (#{health_points})"
  end

  before_create do
    self.size = case health_points
      when 0..10
        :small
      when 11..30
        :big
      else
        :giant
    end    
  end 
end