class OrangeTree
def initialize
@age = 0
@tall = 0
@fruit = 0
puts 'A new Orange Tree is planted.'
end
def height
puts 'The tree is ' + @tall.to_s + ' feet tall.'
end
def count_the_oranges
puts 'The tree has ' + @fruit.to_s + ' oranges.'
end
def pick_an_orange
if @fruit < 1
puts 'Sorry, there are no oranges to pick this year.'
else
puts 'You pick an orange from the tree. It\'s very delicious.'
@fruit = @fruit - 1
end
end
def one_year_passes
puts 'One year passes'
@age = @age + 1
@tall = @tall + 1
@fruit = 0
if dead?
puts 'The Orange Tree dies'
exit
end
if @age > 2
@fruit = @age*10
else
@fruit = 0
end
end
private
def dead?
@age > 5
end
end
puts ''
tree = OrangeTree.new
tree.height
tree.count_the_oranges
tree.pick_an_orange
puts ''
tree.one_year_passes
tree.height
tree.count_the_oranges
tree.pick_an_orange
puts ''
tree.one_year_passes
tree.one_year_passes
tree.height
tree.count_the_oranges
tree.pick_an_orange
tree.pick_an_orange
tree.pick_an_orange
tree.pick_an_orange
tree.pick_an_orange
tree.pick_an_orange
tree.count_the_oranges
puts ''
tree.one_year_passes
tree.height
tree.count_the_oranges
tree.pick_an_orange
tree.pick_an_orange
tree.pick_an_orange
tree.count_the_oranges
tree.pick_an_orange
tree.count_the_oranges
puts ''
tree.one_year_passes
tree.height
tree.count_the_oranges
puts ''
tree.one_year_passes
2. Interact with your baby dragon.
class Dragon
def initialize name
@name = name
@asleep = false
@stuff_in_belly = 10 # he's full
@stuff_in_intestine = 0 # doesn't need to go
puts @name + ' is born.'
end
# Feed
def feed
puts 'You feed ' + @name + '.'
@stuff_in_belly = 10
passage_of_time
end
# Walk
def walk
puts 'You walk ' + @name + '.'
@stuff_in_intestine = 0
passage_of_time
end
# Put to bed
def put_to_bed
puts 'You put ' + @name + ' to bed.'
@asleep = true
3. times do
if @asleep
passage_of_time
end
if @asleep
puts @name + ' snores, filling the room with smoke.'
end
end
if @asleep
@asleep = false
puts @name + ' wakes up slowly.'
end
end
# Toss
def toss
puts 'You toss ' + @name + ' up into the air.'
puts 'He giggles, which singes your eyebrows.'
passage_of_time
end
# Rock
def rock
puts 'You rock ' + @name + ' gently.'
@asleep = true
puts 'He briefly dozes off...'
passage_of_time
if @asleep
@asleep = false
puts '...but wakes when you stop'
end
end
private
# following methods are internal
# hungry?
def hungry?
@stuff_in_belly <= 2
end
# poopy?
def poopy?
@stuff_in_intestine >= 8
end
# passage of time, this is when things happen
def passage_of_time
if @stuff_in_belly > 0
# move food from belly to intestine
@stuff_in_belly = @stuff_in_belly - 1
@stuff_in_intestine = @stuff_in_intestine + 1
else
if @asleep
@asleep = false
puts 'He wakes up suddenly!'
end
puts @name + ' is starving! In desperation, he ate YOU!'
exit
end
if @stuff_in_intestine >= 10
@stuff_in_intestine = 0
puts 'Whoops! ' + @name + ' had an accident...'
end
if hungry?
if @asleep
@asleep = false
puts 'He wakes up suddenly!'
end
puts @name + '\'s stomach grumbles...'
end
if poopy?
if @asleep
@asleep = false
puts 'He wakes up suddenly!'
end
puts @name + ' does the potty dance...'
end
end
end
pet = Dragon.new 'Norbert'
command = ''
while command != 'exit'
puts 'Enter a command to control your dragon:'
command = gets.chomp
if command == 'feed'
pet.feed
elsif command == 'walk'
pet.walk
elsif command == 'put_to_bed'
pet.put_to_bed
elsif command == 'toss'
pet.toss
elsif command == 'rock'
pet.rock
elsif command == 'exit'
exit
else
puts 'Can\'t recognize your command, please re-enter.'
end
end
