RPS每次都显示为抽奖

Question

早些时候我问过为我创建的RPS游戏增加点数，问题是固定的，但现在我遇到了一个新问题。每次用户滚动他们的项目（摇滚，纸张或剪刀）时，都是平局。我已经尝试为数组添加一个百分比33.5％为2和33％为一个增加到100并且它仍然每次都作为平局。

def welcome
  puts "Welcome to Rock, Paper, Scissors. To begin press 'S'. 
  To learn how to play press 'I'. To quit the game press 'Q'"
  input = gets.chomp
    if input =~ /s/i
      start_game
    elsif input =~ /i/i
      instructions
    else
      exit
    end
 end

def start_game
  start_points_P1 = 0
  start_points_P2 = 0
  choice = ['Rock', 'Paper', 'Scissors']
  choice2 = ['Rock', 'Paper', 'Scissors']
  player1 = choice.sample
  player2 = choice2.sample
  puts "Press 'R' to roll for Player 1"
  input = gets.chomp!
  puts "Player 1 has recieved #{player1}"
  puts "Press 'E' to roll for Player 2!"
  input = gets.chomp!
  puts "Player 2 has recieved #{player2}"
    if player1 == player2
      puts "Draw!"
      start_game
    elsif player1 == 'Paper' && player2 == 'Scissors'
      start_points_P2 += 10
      puts "Player 2 has won with #{player2}. You now have #{start_points_P2} points and opponent has #{start_points_P1} points"
    elsif player1 == 'Scissors' && player2 == 'Paper'
      start_points_P1 += 10
      puts "Player 1 has won with #{player1}. You know have #{start_points_P1} points and opponent has #{start_points_P2} points"
    elsif player1 == 'Rock' && player2 == 'Paper'
      start_points_P2 += 10
      puts "Player 2 has won with #{player2}. You now have #{start_points_P2} points and opponent has #{start_points_P1} points"
    elsif player1 == 'Paper' && player2 == 'Rock'
      start_points_P1 += 10
      puts "Player 1 has won with #{player1}. You know have #{start_points_P1} points and opponent has #{start_points_P2} points"
    elsif player1 == 'Scissors' && player2 == 'Rock'
      start_points_P2 += 10
      puts "Player 2 has won with #{player2}. You now have #{start_points_P2} points and opponent has #{start_points_P1} points"
    elsif player1 == 'Rock' && player2 == 'Scissors'
      start_points_P1 += 10
      puts "Player 1 has won with #{player1}. You know have #{start_points_P1} points and opponent has #{start_points_P2} points"
    end
end
welcome

我在这里遗漏了什么，如果我将玩家设置为单独的数组并且只调用.sample一次，为什么它会一直显示为平局？