animals

dog.rb

# Vytvorte tridu Dog.
# Bude mit jednu instancni promennou @energy a dve metody.
#
#   #eat! - zvysi energie o 10
#   #walk! - snizi hodnotu energie o 1
#    #bark! - snizi hodnotu energie o 5
#
#   alive? - true, kdyz energie je vetsi nez 0



class Dog
  def initialize(name)
    @name = name
    @energy = 10
  end
  
  def bark!
    puts 'HAF!'
    @energy -= 5
  end

  def walk!
    @energy -= 1
  end

  def alive?
    @energy > 0
  end

  def dead?
    !alive?
  end

  def eat!(food = :granule)
    case food
     when :ham 
       @energy += 10
     when :granule
       @energy += 0.3
     when :sausage
       @energy += 4
     when :soya
       @energy -= 1
     else
       bark!
    end

    @energy = @energy.round(2)
  end

  def energy
    @energy
  end
end



dog = Dog.new('Azor')

loop do
  puts "---------------------"
  puts " ENERGY: #{dog.energy}"
  puts "--------------------"

  print "Enter dog command: "
  case gets.chomp
  when 'e'
    puts 'What food do you want to feed your dog with?'
    puts "[h]am, ..."
    case gets.chomp
    when 'h' then dog.eat!(:ham)
    when 's' then dog.eat!(:soya)
    else
      dog.eat!
    end
  when 'w' then dog.walk!
  when 'b' then dog.bark!
  else
    dog.bark!
  end

  if  dog.dead?
    puts 'RIP'
    exit
  end
end