Queues -- Tehut Getahun --- Solar System

tehut_solar_system.rb

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+#create the class Planet with read/write variables and an initalize method
+class Planet
+  attr_accessor :name, :slot, :size, :namesake, :moon_count, :export, :distance_from_sun
+  def  initialize(address_hash)
+    @name = address_hash[:name]
+    @slot = address_hash[:slot]
+    @size = address_hash[:size]
+    @namesake = address_hash[:namesake]
+    @moon_count = address_hash[:moon_count]
+    @export = address_hash[:export]
+    @distance_from_sun = address_hash[:distance_from_sun]
+  end
+end
+
+#create the Solar System class with read/write variables
+class Solar_System
+  attr_accessor :planets
+
+  #method to initalize the solar system from the address hash
+  def initialize
+    @planets = {}
+  end
+
+  #method to print all the planets in teh solar system
+  def show_planets
+    @planet_names = planets.keys{:name}
+  end
+
+  #method to add individual planets in the solar system hash
+  def build_system(name, planet)
+    @planets[name] = planet
+  end
+
+  #method to calculate the distance between planets
+  def distance_apart(planet1, planet2, abs = true)
+    distance = planet1.distance_from_sun - planet2.distance_from_sun
+    return distance.abs
+  end
+
+end
+
+#create an array of planet hashes
+milky_way = [
+  {:name => "Mercury",:slot => "first",:size=>  "Small",:namesake=> "in Latin, for the Greek diety Hermes", :moon_count=>  "0", :export=>  "speed" , :distance_from_sun=> 0.39},
+    {:name=> "Venus",:slot=> "2nd", :size=> "Mejum", :namesake=> "in Latin, for the Greek diety Aphrodite",:moon_count=> "3", :export=> "women", :distance_from_sun=> 67.2},
+    {:name=>  "Earth",:slot=> "3rd", :size=> "Mejum", :namesake=> "for the Middle English translation \"eorðe\" of the Greek goddes Gaia",:moon_count=> "1", :export=>  "people", :distance_from_sun=> 1},
+    {:name=>  "Mars",:slot=>  "4th", :size=>  "Mejumish", :namesake=>  "in Latin, for the Greek diety, Ares", :moon_count=>  "0", :export=>  "men", :distance_from_sun=> 1.524},
+    {:name=>  "Jupiter",:slot=>  "5th", :size=>  "Huge", :namesake=>  "in Latin, for the Greek diety,Zues", :moon_count=>  "4", :export=>  "red dots", :distance_from_sun=> 5.203},
+    {:name=>  "Saturn",:slot=>  "6th", :size=>  "Big", :namesake=>  "in Latin, for the Greek diety,Saturn", :moon_count=>  "8", :export=>  "baby eating", :distance_from_sun=> 9.539},
+    {:name=>  "Neptune",:slot=>  "8th", :size=>  "Big", :namesake=>  "for the Greek diety Ouranos", :moon_count=>  "1", :export=>  "sky", :distance_from_sun=>30.06},
+    {:name=>  "Uranus",:slot=>  "7th", :size=>  "Big", :namesake=>  "in Latin, for the Greek diety,Posieden", :moon_count=>  "1", :export=>  "oceans", :distance_from_sun=> 19.18}
+  ]
+
+  gamma = Solar_System.new
+  milky_way.each_with_index do |planet, index|
+    gamma.build_system(planet[:name], Planet.new(milky_way[index]))
+  end
+
+  bajor = Planet.new({:name => "Bajor",:slot => "cardassians are the worst", :size=>  "exploitable", :namesake=> "cardassians are the worst", :moon_count=>  "they have a freakin wormhole!", :export=>  "Ore processed on Terok Nor" , :distance_from_sun=> 500000000})
+  gamma.build_system("bajor",bajor)
+
+  #set variable for sentinal loop  
+  chosen_planet = nil
+  puts "Welcome to the Queues Class Planet Tutor"
+
+  #display planets
+  milky_way.each_with_index do |name,index|
+    puts "#{index + 1}. #{name[:name].capitalize}"
+  end
+
+  #get user input and create variable to interact with it
+  until chosen_planet
+    puts "What planet would you like to learn about today?"
+    user_planet = gets.chomp
+    case user_planet.downcase
+    when "mercury"
+      chosen_planet = milky_way[0][:name].capitalize
+    when "venus"
+      chosen_planet = milky_way[1][:name].capitalize
+    when "earth"
+      chosen_planet = milky_way[2][:name].capitalize
+    when "mars"
+      chosen_planet = milky_way[3][:name].capitalize
+    when "jupiter"
+      chosen_planet = milky_way[4][:name].capitalize
+    when "saturn"
+      chosen_planet = milky_way[5][:name].capitalize
+    when "uranus"
+      chosen_planet = milky_way[6][:name].capitalize
+    when  "neptune"
+      chosen_planet = milky_way[7][:name].capitalize
+    else
+      puts "choose a planet!"
+    end  
+  end
+
+  #get user input to execute .distance_apart
+  puts "You chose #{gamma.planets[chosen_planet].name}! That's a great planet! Choose a second planet to find out how far away it is from #{gamma.planets[chosen_planet].name}."
+  second_planet = gets.chomp.downcase.capitalize
+  puts "Your planets are #{gamma.distance_apart(gamma.planets[chosen_planet], gamma.planets[second_planet])} AUs apart"