tree.rb

=begin
Make an OrangeTree class. It should have a  height method which returns its height, and a  oneYearPasses method,
which, when called, ages the tree one year. Each year the tree grows taller (however much you think an orange
tree should grow in a year), and after some number of years (again, your call) the tree should die. For the
first few years, it should not produce fruit, but after a while it should, and I guess that older trees
produce more each year than younger trees... whatever you think makes most sense. And, of course, you should
be able to countTheOranges (which returns the number of oranges on the tree), and pickAnOrange (which reduces
the @orangeCount by one and returns a string telling you how delicious the orange was, or else it just tells
you that there are no more oranges to pick this year). Make sure that any oranges you don't pick one year
fall off before the next year.
=end

class OrangeTree

  def initialize
    @age = 0
    @alive = true
    @height = 0
    @years_passed = 0
    @fruit = 0
  end

  attr_reader :fruit, :height

  def one_year_passes
    return unless @alive

    @years_passed += 1
    @age += 1
    @height += 10
    @fruit = 0

    status
    fruiting
  end

  def pick_an_orange
    if @fruit > 0
      @fruit -= 1
      'That orange was delicious!'
    else
      'There is no fruit to pick!'
    end
  end

  private
  def status
    @alive = false unless @age <= 10
    unless @alive
      puts 'Tree died'
    end
  end

  def can_fruit?
    @alive && @age > 2
  end

  def fruiting
    if can_fruit?
      @fruit += 2
    end
  end
end


tree = OrangeTree.new
tree.height

tree.one_year_passes
tree.one_year_passes
tree.one_year_passes
puts tree.fruit
tree.one_year_passes
puts tree.fruit
puts tree.pick_an_orange
puts tree.fruit
tree.one_year_passes
tree.one_year_passes
tree.one_year_passes
tree.one_year_passes
tree.one_year_passes
tree.one_year_passes
puts tree.one_year_passes