#!/usr/bin/env ruby
#This file should be more or less clean now.
class Command
attr_accessor :loc
	def initialize(loc = 0) #initialize the location variable, values are handled in commands.
		@loc = loc
	end
	def go_west 			#define west command
		if @loc == 0
			@loc = 1
			puts "West room"
		elsif @loc == 3
			@loc = 0
			puts "Center room"
		else
			puts "You can't go that way."
		end
	end
	def go_east 			#define east command
		if @loc == 0
			@loc = 3
			puts "East room"
		elsif @loc == 1
			@loc = 0
			puts "Center room"
		else
			puts "You can't go that way."
		end
	end
	def go_south 			#define south command
		if @loc == 0
			@loc = 4
			puts "South room"
		elsif @loc == 2
			@loc = 0
			puts "Center room"
		else
			puts "You can't go that way."
		end
	end
	def go_north 			#define north command
		if @loc == 0
			@loc = 2
			puts "North room- there is an exit here, in the north."
		elsif @loc == 4
			@loc = 0
			puts "Center room"
		elsif @loc == 2
			@loc = 5
			puts "End."
		else
			puts "You can't go that way."
		end
	end
end
if __FILE__ == $0	#make sure the file isn't being loaded as a library
cmd = Command.new	#create the new instance
	while cmd.loc != 5	#access the instance's location variable
		puts "Enter direction."
		command = gets.chomp	#get user's input, cutting off the automatic newline
		if command == "west"
			cmd.go_west
		elsif command == "east"
			cmd.go_east
		elsif command == "south"
			cmd.go_south
		elsif command == "north"
			cmd.go_north
		else
			puts "Unrecognized command."	#handle unexpected input
		end
	end
end