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Solar System Project

Let's make a planetary system!

Baseline

  • Create a Planet class with a name attribute. You should be able to instantiate a new Planet object with an associated name.

Wave 1

Primary Requirements

  • 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 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. 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

  • 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