advent of code day two part one

part1.rb

depth=0
forward=0
File.readlines('input.txt').each do |line|
  if /([^ ]*) ([0-9]*)/ =~ line
    puts "direction: " + $1 + " value " + $2 + "\n"
    value = $2.to_i
    movement = $1
    if movement == "forward"
      forward = forward + value
    else
      if movement == "down"
        depth = depth + value
      else
        depth = depth - value
      end
    end
  else
    puts "wrong"
  end
end

puts "Forward: " + forward.to_s + "\n"
puts "Depth: " + depth.to_s + "\n"
puts "Answer: " + (forward * depth).to_s + "\n"