8.31.12 SpaceShip class

gistfile1.rb

#Object Oriented Design, Simon Allardice from lynda.com

#Class: SpaceShip
#Attributes: +public name: String
#            -private shieldstrength: Integer
#Operations: +fire( ): String
#            -reduce shields (Integer)

#Notes: 1. Public Class Spaceship
#       2. Attributes are expressed as instance variables, which are variables that belong to an instance of a class.  What this means is that any object created within this class will have their own copy of these variables <--I NEED A VISUAL OF THIS BADLY
#       3. +Public or -Private refers to the visibility level of the features we are coding up.

class Spaceship
      #instance variables
      @name
      @shieldstrength

      #methods
      def fire
          return "Boom!"
      end

      def reduce_shields(amount)
          shield_strength -= amount
      end
end

should be:

class Spaceship
  def initialize(new_name)
    @name = new_name
    @shield_strength = 10
  end

  def fire
    "Boom!"
  end

  def reduce_shields(amount)
    @shield_strength -= amount
  end
end