2 Player Math game

main.rb

require_relative 'two_player'
require_relative 'question'

@repl = true
@turn_number = 0

puts "Welcome to 2 Player Math"

print 'Player 1 name: ' 
@name = gets.chomp
player1 = Player.new(@name)

print 'Player 2 name: '
@name = gets.chomp
player2 = Player.new(@name)

puts "Let us begin playing!"

while @repl 

  question = Question.new

  case @turn_number
  when 0 
    print "#{player1.name}"
  else
    print "#{player2.name}"
  end

  print question.to_string
  @input = gets.chomp.to_i

  if @turn == 0 && question.is_answer_correct?(@input)
    puts "CORRECT!"
    player1.add_point
    @turn += 1
  elsif @turn == 0 && !question.is_answer_correct?(@input)
    puts "Wrong!!!!"
    player1.lose_life
    @turn += 1
  elsif @turn == 1 && question_is_answer_correct?(@input)
    puts "CORRECT!!"
    player2.add_point
    @turn += 1
  elsif @turn == 1 && !question_is_answer_correct?(@input)
    puts "WRONG!"
    player2.lose_life
    @turn += 1
  end

puts 
puts "The score is:
      #{player1.name}: #{player1.correct_answers}
      #{player2.name}: #{player2.correct_answers}"
puts

if player1.lives < 1 || player2.lives < 1
  puts "Game over"
  if player1.lives < 1
    puts "#{player2.name} wins!"
  elsif player2.lives <1 
    puts "#{player1.name} wins!"
  end

  @repl = false
end

question.rb

class Question
  attr_reader(:answer)

  def intialize
    @first_number = rand(1..20)
    @second_number = rand(1..20)
    @operator = rand(1..3)

    case @operator
    when 1
      @answer = @first_number + @second_number
      @operator_string = '+'
    when 2 
      @answer = @first_number - @second_number
      @operator_string = '-'
    else
      @answer = @first_number - @second_number
      @operator_string = '*'
    end
  end

  def make_string
    "What is #{@first_number} #{operator_string} #{second_number}?"
  end

  def is_answer_correct?(input)
    if input == @answer
      return true
    else
      return false
    end
  end

end

two_player.rb

class Player
  attr_accessor (:name, :lives, :correct_answers)

  def initialize(name, lives = 3)
    @name = name
    @lives = lives
    @correct_answers = 0
  end

  def add_point
    @correct_answers += 1
  end

  def lose_life
    @lives -= 1
  end
end