class Thing
  @@num_things = 0

  attr_reader( :name, :description )
  attr_writer( :description )

  def initialize( aName, aDescription )
    @name = aName
    @description = aDescription
    @@num_things +=1
  end

  def to_s
    return "(Thing.to_s):: The #{@name} thin is #{@description}"
  end

  def show_classvars
    return "There are #{@@num_things} thing objects in this game"
  end
end

class Room < Thing
end

class Treasure < Thing
  attr_reader :value
  attr_writer :value

  def initialize( aName, aDescription, aValue)
    super( aName, aDescription )
    @value = aValue
  end
end

class Map


  def initialize( someRooms )
    @rooms = someRooms
  end

  def to_s
    @rooms.each {
      |a_room|
      puts(a_room)
    }
  end
end

t1 = Treasure.new("sword", "an elvish weapon forged of gold",800)
t2 = Treasure.new("dragon horde", "a hige pile of jewels", 550)

room1 = Room.new("crystal grotto", "a glittery cavern")
room2 = Room.new("dark cave", "a gloomy hole in the rocks")
room3 = Room.new("forest glade", "a verdant clearing filled woth shimmering light")
mymap = Map.new([room1,room2,room3])

puts "\nlet's inspect the treasures..."
puts "this is the treasure1: #{t1.inspect}"
puts "this is the treasure2: #{t2.inspect}"
puts "\nlet's try out the Thing.to_s method..."
puts "yup, treasure 2 is #{t2.to_s}"
puts "\nNow let's see how our attribute accessors work"
puts "we'll evaluate this:"
puts 't1 name= #{t1.name}, description= #{t1.description}, value= #{t1.value}'
puts "t1 name= #{t1.name}, description= #{t1.description}, value= #{t1.value}"
puts "\nNow we'll assign 100 to t1.value and alter t1.description..."
t1.value = 100
t1.description << " (now somewhat tarnished)"
puts "t1 (NOW) name=#{t1.name}, description=#{t1.description}, value=#{t1.value}"
puts "\nLet's take a look at room1..."
puts "room1 name=#{room1.name}, description=#{room1.description}"
puts "\nAnd the map..."
puts "mymap = #{mymap.to_s}"
puts "\nFinally, let's check how many Thing objects we've created..."
puts( t1.show_classvars )