I am learning OOP with Ruby. I have 2 classes – Game & Player.
Player and Computer are to be created for Tick-Tack-Toe game. My idea is to use Player class to create a player and a computer for the game.

I believe Player class could have interaction with Game class hence Game class is initialised with @player. Game class should be able to print out player_name, however, it doesn’t happen as I plan.

class Game
    attr_accessor :player, :computer

    @@board = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

    def initialize(player, computer)
        @player = player
        @computer = computer

        puts "#{player.name} vs #{computer.name}"
    end

    def self.player_name
        puts "#{player.name}" # line 14
    end

    def self.computer_name
        puts "#{computer.name}"
    end

    def self.status
        puts "#{@@board}"
    end
end

class Player
    attr_reader :name

    def initialize(name)
        @name = name

        puts "#{name} is online."
    end
end

I execute codes below:

p1 = Player.new('John')
p2 = Player.new('Computer')
Game.new(p1, p2)
Game.player_name # line 39
Game.computer_name

Got error message below. The error comes from line 39 and 14.

John is online.
Computer is online.
John vs Computer
test.rb:14:in `player_name': undefined local variable or method `player' for Game:Class (NameError)

        puts "#{player.name}"
                ^^^^^^
Did you mean?  player_name
        from test.rb:39:in `<main>'

I am really confused where is my mistake.