Adding planet class and solar system program.

planet_class_file.rb

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+class Planet
+#year length is given in units of earth years
+#diameter is given in units of earth diameters
+#distance_from_star is given in millions of miles
+
+  attr_reader :name, :year_length, :number_of_moons, :diameter, :distance_from_star , :moon_names, :state_of_matter, :fun_facts
+
+  def initialize(single_planet_hash)
+    @name = single_planet_hash[:name]
+    @year_length = single_planet_hash[:year_length]
+    @number_of_moons = single_planet_hash[:number_of_moons]
+    @diameter = single_planet_hash[:diameter]
+    @distance_from_star = single_planet_hash[:distance_from_star]
+    @moon_names = single_planet_hash[:moon_names] #moon names is an array
+    @state_of_matter = single_planet_hash[:state_of_matter]
+    @fun_facts = single_planet_hash[:fun_facts]
+  end
+
+  def dig_hole_through_planet (shovelfulls = 100)
+    progress = (diameter*100)/shovelfulls
+    if progress < 100
+      puts "You ran out of air before digging all the way through. :("
+    else
+      puts "SUCCESS! You dug a hole through the planet!"
+    end
+  end
+
+   def add_moon(moon)
+     @moon_names.push(moon)
+   end
+
+
+   def print_planet_info
+    puts "\n#{@name} is a planet that is #{@distance_from_star} million miles from its star."
+    puts "Its diameter is #{@diameter} times that of Earth's."
+    puts "One #{@name} year is equal to #{@year_length} Earth years."
+    puts "The surface is #{@state_of_matter}."
+    puts "#{@fun_facts} How about that?"
+    puts
+    end
+end

solar_system_program.rb

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+require "./planet_class_file.rb"
+require "./solar_system_class.rb"
+
+#start with just one planet
+pluto =
+      {name: "Pluto",
+      year_length: 5,
+      numbers_of_moons: 3,
+      diameter: 23,
+      distance_from_star: 6422,
+      moon_names:[],
+      state_of_matter: "furry",
+      fun_facts: "For some reason this planet can't talk, but planet Goofy can."
+       }
+
+#then move on to an array of planet info
+#question- is there an easy way to keep all this info in a different file?
+#I don't like it to be here.
+
+more_planets = [
+        {name: "Oobleck",
+        year_length: 2,
+        numbers_of_moons: 2,
+        diameter: 3.34,
+        distance_from_star: 105,
+        moon_names:[],
+        state_of_matter: "sometimes solid, sometimes liquid",
+        fun_facts: "You can run across the surface, but if you walk you'll sink."
+         },
+
+        {name: "Pizza",
+        year_length: 3,
+        numbers_of_moons: 1,
+        diameter: 465,
+        distance_from_star: 231,
+        moon_names:[],
+        state_of_matter: "gaseous",
+        fun_facts: "There are little green aliens inside a crane game on Pizza Planet."
+        },
+
+        {name: "Captain",
+        year_length: 34,
+        numbers_of_moons: 0,
+        diameter: 65.5,
+        distance_from_star: 24,
+        moon_names:[],
+        state_of_matter: "plasma",
+        fun_facts: "Captain Planet is gonna take pollution down to zero."
+      },
+
+        {name: "Xerox",
+        year_length: 2,
+        numbers_of_moons: 2,
+        diameter: 34.3,
+        distance_from_star: 16,
+        moon_names:["Copy 1", "Copy 2"],
+        state_of_matter: "black ink",
+        fun_facts: "You can make copies on planet Xerox."
+        },
+
+        {name: "Janet",
+        year_length: 33,
+        numbers_of_moons: 3,
+        diameter: 105,
+        distance_from_star: 1020,
+        moon_names:["Riff Raff", "Frank N. Furter", "Brad"],
+        state_of_matter: "hot mess",
+        fun_facts: "Dammit, Janet. I love you."
+        }
+      ]
+
+#first make planets from the info we have
+#start with just one
+pluto_p = Planet.new(pluto)
+
+# then make a whole array of planets
+starter_planets_array = []
+
+more_planets.each do |planet|
+  starter_planets_array.push(Planet.new(planet))
+end
+
+#test
+# starter_planets_array.each do |planet|
+#   puts planet.name
+# end
+
+#ok, now make a solar system.
+bowler_system = SolarSystem.new("Bowler system", "Bowling ball")
+puts "We have created the #{bowler_system.system_name}."
+puts
+
+bowler_system.add_one_planet(pluto_p)
+
+#Great. Now, from the array of planets we made, add those planets to the bowler system as well.
+bowler_system.add_array_of_planets(starter_planets_array)
+
+#now play around with the solar system a little
+bowler_system.planets_array.each do |planetn|
+  puts planetn.name
+end
+puts
+
+bowler_system.planets_array.each do |planetp|
+  puts planetp.dig_hole_through_planet
+end
+
+bowler_system.planets_array.each do |planetz|
+  puts planetz.print_planet_info
+end