Forum: Ruby How to run a ruby script

class Dungeonapp
  attr_accessor :player

  def initialize(player_name)
    @player = Player.new(player_name)
    @rooms = []
  end

  def add_room(reference, name, description, connections)
    @rooms << Room.new(reference, name, description, connections)
  end

  def start(location)
    @player. location = location
    show_current_description
  end

  def show_current_description
    puts find_room_in_dungeon(@player.location).full_description
  end

  def find_room_in_dungeon(reference)
    @rooms.detect { |room| room.reference == reference }
  end

  def find_room_in_direction(direction)
    find_room_in_dungeon(@player.location).connections[direction]
  end

  def go(direction)
    puts "You go " + direction.to_s
    @player.location = find_room_in_direction(direction)
    show_current_description
  end

  class Player
    attr_accessor :name, :location

    def initialize(name)
      @name = name
    end
  end

  class Room
    attr_accessor :reference, :name, :description, :connections

    def initialize(reference, name, description, connections)
      @reference = reference
      @name = name
      @description = description
      @connections = connections
    end

    def full_description
      @name + "\n\nYou are in " + @description
    end
  end
end


this is my dungeonapp.rb file.I am using Ubuntu.Now how to execute this
code :

my_dungeon = Dungeon.new("Fred Bloggs")
my_dungeon.add_room(:largecave, "Large Cave", "a large cavernous cave",
{
:west => :smallcave })
my_dungeon.add_room(:smallcave, "Small Cave", "a small, claustrophobic
cave", {
:east => :largecave })

Question:
1.How to run this code from out of the file,like we do in java.Do I need
to go to irb prompt or usual command prompt for firing this code out of
the file.
2.When i copy the code of this file and directly paste on the irb prompt
it automatically add prefix "dungeonapp.rb" in each line! what is the
reason behind this.

Thank you guys.I need urgent help.

Well I took you code and pasted it into a file and went

$ ruby dungeonapp.rb

It works for me and should work for you.

However the is a bug. The class is called Dungeonapp but you then do 
this

my_dungeon = Dungeon.new("Fred Bloggs")

Use only one name or the other.

Also I updated the end bit to

my_dungeon.start(:largecave)
while true
  print "go where? "
  go_to = STDIN.gets.chomp
  my_dungeon.go(go_to)
end

and had to change this

def find_room_in_direction(direction)
    find_room_in_dungeon(@player.location).connections[direction.to_sym]
end

Note the to_sym on the end. You cannot type a symbol in interactively so
you need to convert it.

A good start, keep it up.

Peter Hickman wrote in post #1090473:
> Well I took you code and pasted it into a file and went
>
> $ ruby dungeonapp.rb
>
> It works for me and should work for you.
>
> However the is a bug. The class is called Dungeonapp but you then do
> this
>
> my_dungeon = Dungeon.new("Fred Bloggs")
>
> Use only one name or the other.
>
> Also I updated the end bit to
>
> my_dungeon.start(:largecave)
> while true
>   print "go where? "
>   go_to = STDIN.gets.chomp
>   my_dungeon.go(go_to)
> end
>
> and had to change this
>
> def find_room_in_direction(direction)
>     find_room_in_dungeon(@player.location).connections[direction.to_sym]
> end
>
> Note the to_sym on the end. You cannot type a symbol in interactively so
> you need to convert it.
>
> A good start, keep it up.

Thank you for that.

but we do ruby dungeonapp.rb to execute the file but how to execute the 
code out of the file? if you can online i want to chat with you.Thank 
You

Well you could just place all the code between

class Dungeon
 .. and ...
end

into a file called dungeon.rb and create a new file called play.rb

-- play.rb
#!/usr/bin/env ruby

require 'dungeon'

my_dungeon = Dungeon.new("Fred Bloggs")
my_dungeon.add_room(:largecave, "Large Cave", "a large cavernous cave", 
{
:west => :smallcave, :east => :kitchen })
my_dungeon.add_room(:smallcave, "Small Cave", "a small, claustrophobic
cave", { :east => :largecave })
my_dungeon.add_room(:kitchen, "Kitchen", "a small kitchen", {:west =>
:largecave})

my_dungeon.start(:largecave)
while true
  print "go where? "
  go_to = STDIN.gets.chomp
  my_dungeon.go(go_to)
end

now all you need to run it is

$ ruby play.rb

It will load the Dungeon class from dungeon.rb and run it (providing it 
is
in the same directory as play.rb).

On Fri, Dec 28, 2012 at 10:17 AM, Peter Hickman
<peterhickman386@googlemail.com> wrote:
>
> my_dungeon.start(:largecave)
> It will load the Dungeon class from dungeon.rb and run it (providing it is
> in the same directory as play.rb).
>

As was recommended to me previously, I'd suggest looking at GLI and
Methadone to create command line applications, which it looks like
your adventure game is. (RIght on! Good start!)

Likewise, the RSpec book, which is quite a bit about test/behaviour
driven development, uses a game application as a case study. Working
your way through that will be of double benefit.

Peter Hickman wrote in post #1090491:
> Well you could just place all the code between
>
> class Dungeon
>  .. and ...
> end
>
> into a file called dungeon.rb and create a new file called play.rb
>
> -- play.rb
> #!/usr/bin/env ruby
>
> require 'dungeon'
>
> my_dungeon = Dungeon.new("Fred Bloggs")
> my_dungeon.add_room(:largecave, "Large Cave", "a large cavernous cave",
> {


Thank You I got it!

tamouse mailing lists wrote in post #1090547:
> On Fri, Dec 28, 2012 at 10:17 AM, Peter Hickman
> <peterhickman386@googlemail.com> wrote:
>>
>> my_dungeon.start(:largecave)
>> It will load the Dungeon class from dungeon.rb and run it (providing it is
>> in the same directory as play.rb).
>>
>
> As was recommended to me previously, I'd suggest looking at GLI and
> Methadone to create command line applications, which it looks like
> your adventure game is. (RIght on! Good start!)
>
> Likewise, the RSpec book, which is quite a bit about test/behaviour
> driven development, uses a game application as a case study. Working
> your way through that will be of double benefit.

Ohk I got it Thank You !