Solar-system

README.md

@@ -6,28 +6,29 @@ Let's make a planetary system!
 
 # Wave 1
 ## Primary Requirements
-- Get creative! Give each instance of `Planet` diameters, mass, moons.. whatever! __Allow these attributes to be set using a hash in initialize.__
-- You should be able to create many different planets with different properties, like Mercury, Venus, Earth, Mars, Jupiter, etc.
+- Give your `Planet` class some additional properties like diameter, mass, number of moons, and any other properties you think a planet should have.
+- You should be able to create many different planet objects with different properties, like Mercury, Venus, Earth, Mars, Jupiter, etc.
 
 ## Optional Enhancements
 - Give each planet a rate of solar rotation
 - Give each planet a `@distance_from_the_sun` attribute
-
-- Write a program that asks for user input to query the planets:
+- Write a _new_ program that asks for user input to query the planets using the `Planet` class you have created:
   - First, ask the user to select a planet they'd like to learn about.
   - Present the user with a list of planets from which they can choose. Something like:
     - `1. Mercury, 2. Venus, 3. Earth, 4. Secret Earth, 5. Mars, 6. Jupiter, ... 13. Exit`
   - Provide the user with well formatted information about the planet (diameter, mass, number of moons, primary export, etc.)
   - Then ask the user for another planet.
 
+
 # Wave 2
 ## Primary Requirements
-- Create a `SolarSystem` class that has an attribute `planets` that has zero to many `Planet` instances. There are a few different options for how to associate the planets with your solar system:
-    - Initialize the list of planets in the constructor of the solar system
-    - Create a method that adds a single planet to a solar system
-    - Create a method that adds a list of planets to the existing list of planets
+- Create a `SolarSystem` class that has an attribute `planets` that has zero to many `Planet` instances. To create the Planet associations, your `SolarSystem` should:
+    - Have a method that adds a single planet to your solar system
+    - Have a second method that adds an array of planets to the existing array of planets
+- Update your `initialize` in the `Planet` class to accept a hash rather than individual parameters
+- Use a default value attribute in at least one method in your `Planet` class
 
 ## Optional Enhancements
-- Ensure that the each planet has a `@distance_from_the_sun` attribute. Using this data, add a method to determine the distance from any other planet (assuming planets are in a straight line from the sun)
+- If you haven't already, add a `@distance_from_the_sun` attribute to your `Planet`. Using this data, add a method to your `SolarSystem` which will calculate the distance between any two planets provided (assuming planets are in a straight line from the sun)
 - Give your solar system a formation year (in earth years).
 - Define a method that returns the local year of the planet based on it's rotation since the beginning of the solar system

planet.rb

@@ -0,0 +1,70 @@
+class SolarSystem
+  attr_reader :planets
+
+  def intialize(planets)
+    planets.each do |planet|
+      @planets[planet.name] = planet
+    end
+  end
+
+  def add_planet(x)
+    @planets[x.name] = x
+  end
+
+  def remove_planet(planet_name)
+    @planets[planet_name] = nil
+  end
+
+  def name_of_planet(position)
+    planet_in_position = @planets[position]
+
+    planet_in_position.class #=> Planet
+    planet_in_position.colonized? #=> true or false
+    @planets[position].name
+  end
+
+  def distance_between(planet1, planet2)
+
+  end
+end
+
+class Planet
+  attr_reader :name, :earth_age
+
+  def initialize(options)
+    @name      = options[:name]
+    @mass      = options[:mass]
+    @rotation  = options[:rotation]
+    @earth_age = options[:earth_age]
+    @distance  = options[:distance]
+    @robots    = options[:robots]
+  end
+
+  def colonized?
+    @robots == true
+  end
+end
+
+
+earth = Planet.new(name: "Earth", mass: 32598234, robots: true)
+mars = Planet.new(name: "Earth", mass: 23455, robots: true)
+solar_system = SolarSystem.new(name: "Our solar system", planets: [earth, mars])
+
+venus = Planet.new(name: "Venus", mass: 2343284092384, robots: true)
+planet_dog_food = Planet.new(name: "Dog Food", mass 0, robots: false)
+
+solar_system.add_planet(venus)
+solar_system.add_planet(planet_dog_food)
+
+
+
+planets = {
+  "mercury" => Planet.new(),
+  "venus" => Planet.new()
+}
+choice = gets.chomp.downcase
+planets[choice]
+
+
+
+