# adapter pattern.rb

class Player
  def attack
    raise "pls override"
  end

  def defense
    raise "pls override"
  end
end

# 后卫
class Guards < Player
  attr :name
  def initialize(name)
    @name = name
  end

  def attack
    puts "后卫 #{name} 进攻"
  end

  def defense
    puts "后卫 #{name} 防守"
  end
end

# 外籍中锋
class ForeignCenter < Player
  attr :name
  def initialize(name)
    @name = name
  end

  def chinese_attack
    puts "外籍中锋 #{name} 进攻"
  end

  def chinese_defense
    puts "外籍中锋 #{name} 防守"
  end
end

class Translator < Player
  attr :wjzf

  def initialize(name)
    @wjzf ||= ForeignCenter.new(name)
  end

  def attack
    @wjzf.chinese_attack
  end

  def defense
    @wjzf.chinese_defense
  end

end

m = Guards.new("麦迪")
m.attack
m.defense

ym = Translator.new("姚明")
ym.attack
ym.defense