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@mjyoung
mjyoung committed Jan 8, 2014
1 parent b181900 commit c0a9cfc
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308 changes: 154 additions & 154 deletions blackjack.rb
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Original file line number Diff line number Diff line change
@@ -1,129 +1,129 @@
require 'pry'

def start_game
current_deck = [
["Ace", "Clubs"], ["Ace", "Diamonds"], ["Ace", "Hearts"], ["Ace", "Spades"],
["King", "Clubs"], ["King", "Diamonds"], ["King", "Hearts"], ["King", "Spades"],
["Queen", "Clubs"], ["Queen", "Diamonds"], ["Queen", "Hearts"], ["Queen", "Spades"],
["Jack", "Clubs"], ["Jack", "Diamonds"], ["Jack", "Hearts"], ["Jack", "Spades"],
["2", "Clubs"], ["2", "Diamonds"], ["2", "Hearts"], ["2", "Spades"],
["3", "Clubs"], ["3", "Diamonds"], ["3", "Hearts"], ["3", "Spades"],
["4", "Clubs"], ["4", "Diamonds"], ["4", "Hearts"], ["4", "Spades"],
["5", "Clubs"], ["5", "Diamonds"], ["5", "Hearts"], ["5", "Spades"],
["6", "Clubs"], ["6", "Diamonds"], ["6", "Hearts"], ["6", "Spades"],
["7", "Clubs"], ["7", "Diamonds"], ["7", "Hearts"], ["7", "Spades"],
["8", "Clubs"], ["8", "Diamonds"], ["8", "Hearts"], ["8", "Spades"],
["9", "Clubs"], ["9", "Diamonds"], ["9", "Hearts"], ["9", "Spades"],
["10", "Clubs"], ["10", "Diamonds"], ["10", "Hearts"], ["10", "Spades"]
]

# from solutions video...
# better code for the above would have been:
# suits = ["Clubs", "Diamonds", "Hearts", "Spades"]
# cards = ["Ace", "King", "Queen", "Jack", "10", "9", "8", "7", "6", "5", "4", "3", "2"]
# current_deck = cards.product(suits)

player_hand = current_deck.sample(2)
current_deck.delete(player_hand[0])
current_deck.delete(player_hand[1])

dealer_hand = current_deck.sample(2)
current_deck.delete(dealer_hand[0])
current_deck.delete(dealer_hand[1])

current_turn = "player"

{player_hand: player_hand, dealer_hand: dealer_hand,
current_deck: current_deck, current_turn: current_turn}
current_deck = [
["Ace", "Clubs"], ["Ace", "Diamonds"], ["Ace", "Hearts"], ["Ace", "Spades"],
["King", "Clubs"], ["King", "Diamonds"], ["King", "Hearts"], ["King", "Spades"],
["Queen", "Clubs"], ["Queen", "Diamonds"], ["Queen", "Hearts"], ["Queen", "Spades"],
["Jack", "Clubs"], ["Jack", "Diamonds"], ["Jack", "Hearts"], ["Jack", "Spades"],
["2", "Clubs"], ["2", "Diamonds"], ["2", "Hearts"], ["2", "Spades"],
["3", "Clubs"], ["3", "Diamonds"], ["3", "Hearts"], ["3", "Spades"],
["4", "Clubs"], ["4", "Diamonds"], ["4", "Hearts"], ["4", "Spades"],
["5", "Clubs"], ["5", "Diamonds"], ["5", "Hearts"], ["5", "Spades"],
["6", "Clubs"], ["6", "Diamonds"], ["6", "Hearts"], ["6", "Spades"],
["7", "Clubs"], ["7", "Diamonds"], ["7", "Hearts"], ["7", "Spades"],
["8", "Clubs"], ["8", "Diamonds"], ["8", "Hearts"], ["8", "Spades"],
["9", "Clubs"], ["9", "Diamonds"], ["9", "Hearts"], ["9", "Spades"],
["10", "Clubs"], ["10", "Diamonds"], ["10", "Hearts"], ["10", "Spades"]
]

# from solutions video...
# better code for the above would have been:
# suits = ["Clubs", "Diamonds", "Hearts", "Spades"]
# cards = ["Ace", "King", "Queen", "Jack", "10", "9", "8", "7", "6", "5", "4", "3", "2"]
# current_deck = cards.product(suits)

player_hand = current_deck.sample(2)
current_deck.delete(player_hand[0])
current_deck.delete(player_hand[1])

dealer_hand = current_deck.sample(2)
current_deck.delete(dealer_hand[0])
current_deck.delete(dealer_hand[1])

current_turn = "player"

{player_hand: player_hand, dealer_hand: dealer_hand,
current_deck: current_deck, current_turn: current_turn}
end

def calculate_total(hand)
hand_total = 0
hand.each do |card|
case card[0]
when "Ace"
hand_total += 11
when "King", "Queen", "Jack" # same as || which is not valid in a case statement
hand_total += 10
else
hand_total += card[0].to_i
end
end

# correct for aces if total > 21
ace_array = hand.map { |card| card[0] }

ace_array.select{ |card| card == "Ace" }.count.times do
hand_total -= 10 if hand_total > 21
end

hand_total
hand_total = 0
hand.each do |card|
case card[0]
when "Ace"
hand_total += 11
when "King", "Queen", "Jack" # same as || which is not valid in a case statement
hand_total += 10
else
hand_total += card[0].to_i
end
end

# correct for aces if total > 21
ace_array = hand.map { |card| card[0] }

ace_array.select{ |card| card == "Ace" }.count.times do
hand_total -= 10 if hand_total > 21
end

hand_total
end

def hit_or_stay(current_deck, hand, current_turn)
while true
if current_turn == "player"
puts "Would you like to [H]it or [S]tay?"
response = gets.chomp
case response
when "H"
random_card = current_deck.sample(1)[0]
hand << random_card
current_deck.delete(random_card)
total = calculate_total(hand)
puts "You Hit! Your total is #{total}. Your cards are: "
hand.each { |card| puts "#{card[0]} of #{card[1]}" }
game_over = check_if_game_over(hand, total, current_turn)
break if game_over == 1
when "S"
total = calculate_total(hand)
puts "You Stay! Your total is #{total}. Your cards are: "
hand.each { |card| puts "#{card[0]} of #{card[1]}" }
break
while true
if current_turn == "player"
puts "Would you like to [H]it or [S]tay?"
response = gets.chomp.upcase
case response
when "H"
random_card = current_deck.sample(1)[0]
hand << random_card
current_deck.delete(random_card)
total = calculate_total(hand)
puts "You Hit! Your total is #{total}. Your cards are: "
hand.each { |card| puts "#{card[0]} of #{card[1]}" }
game_over = check_if_game_over(hand, total, current_turn)
break if game_over == 1
when "S"
total = calculate_total(hand)
puts "You Stay! Your total is #{total}. Your cards are: "
hand.each { |card| puts "#{card[0]} of #{card[1]}" }
break
else puts "Please press [H]it or [S]tay"
end
else
total = calculate_total(hand)
if total < 17
random_card = current_deck.sample(1)[0]
hand << random_card
current_deck.delete(random_card)
total = calculate_total(hand)
puts "Dealer hits! Dealer's total is #{total}. Dealer's cards are: "
hand.each { |card| puts "#{card[0]} of #{card[1]}" }
game_over = check_if_game_over(hand, total, current_turn)
break if game_over == 1
else
puts "Dealer stays! Dealer's total is #{total}. Dealer's cards are: "
hand.each { |card| puts "#{card[0]} of #{card[1]}" }
break
end
end
end

hit_or_stay_hash = { current_deck: current_deck, hand: hand,
total: total, game_over: game_over }
end
else
total = calculate_total(hand)
if total < 17
random_card = current_deck.sample(1)[0]
hand << random_card
current_deck.delete(random_card)
total = calculate_total(hand)
puts "Dealer hits! Dealer's total is #{total}. Dealer's cards are: "
hand.each { |card| puts "#{card[0]} of #{card[1]}" }
game_over = check_if_game_over(hand, total, current_turn)
break if game_over == 1
else
puts "Dealer stays! Dealer's total is #{total}. Dealer's cards are: "
hand.each { |card| puts "#{card[0]} of #{card[1]}" }
break
end
end
end

hit_or_stay_hash = { current_deck: current_deck, hand: hand,
total: total, game_over: game_over }
end

def check_if_game_over(hand, total, current_turn)
if hand.size == 2 && total == 21 && current_turn == "player"
puts "Blackjack! You win!"
current_turn = "nobody"
elsif hand.size > 2 && total > 21 && current_turn == "player"
puts "You BUST! Dealer wins!"
current_turn = "nobody"
elsif total == 21 && current_turn == "dealer"
puts "Dealer has 21! Dealer wins!"
current_turn = "nobody"
elsif total > 21 && current_turn == "dealer"
puts "Dealer BUSTS! You win!"
current_turn = "nobody"
end
game_over = 1 if current_turn == "nobody"
if hand.size == 2 && total == 21 && current_turn == "player"
puts "Blackjack! You win!"
current_turn = "nobody"
elsif hand.size > 2 && total > 21 && current_turn == "player"
puts "You BUST! Dealer wins!"
current_turn = "nobody"
elsif total == 21 && current_turn == "dealer"
puts "Dealer has 21! Dealer wins!"
current_turn = "nobody"
elsif total > 21 && current_turn == "dealer"
puts "Dealer BUSTS! You win!"
current_turn = "nobody"
end
game_over = 1 if current_turn == "nobody"
end

def determine_winner(player_total, dealer_total)
puts player_total > dealer_total || dealer_total > 21 ? "You win!" : "Dealer wins!"
puts player_total > dealer_total || dealer_total > 21 ? "You win!" : "Dealer wins!"
end

puts "What is your name?"
Expand All @@ -133,56 +133,56 @@ def determine_winner(player_total, dealer_total)

while true

start_hash = start_game
player_hand = start_hash[:player_hand]
dealer_hand = start_hash[:dealer_hand]
current_deck = start_hash[:current_deck]
current_turn = start_hash[:current_turn]

player_total = calculate_total(player_hand)
dealer_total = calculate_total(dealer_hand)

puts "#{player_name}\'s hand consists of: "
player_hand.each { |card| puts "#{card[0]} of #{card[1]}" }

puts "Dealer shows one card face up: "
puts "#{dealer_hand.first[0]} of #{dealer_hand.first[1]}"

game_over = check_if_game_over(player_hand, player_total, current_turn)

if game_over != 1
hit_or_stay_hash = hit_or_stay(current_deck, player_hand, current_turn)
current_deck = hit_or_stay_hash[:current_deck]
player_hand = hit_or_stay_hash[:hand]
player_total = hit_or_stay_hash[:total]
game_over = hit_or_stay_hash[:game_over]
end

if game_over != 1
current_turn = "dealer"
game_over = check_if_game_over(dealer_hand, dealer_total, current_turn)
if game_over != 1
hit_or_stay_hash = hit_or_stay(current_deck, dealer_hand, current_turn)
current_deck = hit_or_stay_hash[:current_deck]
dealer_hand = hit_or_stay_hash[:hand]
dealer_total = hit_or_stay_hash[:total]
game_over = hit_or_stay_hash[:game_over]

current_turn = "nobody"
determine_winner(player_total, dealer_total) if game_over != 1
end
end

puts "Would you like to play another game? [Y] or [N]"
another_game = gets.chomp
start_hash = start_game
player_hand = start_hash[:player_hand]
dealer_hand = start_hash[:dealer_hand]
current_deck = start_hash[:current_deck]
current_turn = start_hash[:current_turn]

player_total = calculate_total(player_hand)
dealer_total = calculate_total(dealer_hand)

puts "#{player_name}\'s hand consists of: "
player_hand.each { |card| puts "#{card[0]} of #{card[1]}" }

puts "Dealer shows one card face up: "
puts "#{dealer_hand.first[0]} of #{dealer_hand.first[1]}"

game_over = check_if_game_over(player_hand, player_total, current_turn)

if game_over != 1
hit_or_stay_hash = hit_or_stay(current_deck, player_hand, current_turn)
current_deck = hit_or_stay_hash[:current_deck]
player_hand = hit_or_stay_hash[:hand]
player_total = hit_or_stay_hash[:total]
game_over = hit_or_stay_hash[:game_over]
end

if game_over != 1
current_turn = "dealer"
game_over = check_if_game_over(dealer_hand, dealer_total, current_turn)
if game_over != 1
hit_or_stay_hash = hit_or_stay(current_deck, dealer_hand, current_turn)
current_deck = hit_or_stay_hash[:current_deck]
dealer_hand = hit_or_stay_hash[:hand]
dealer_total = hit_or_stay_hash[:total]
game_over = hit_or_stay_hash[:game_over]

current_turn = "nobody"
determine_winner(player_total, dealer_total) if game_over != 1
end
end

puts "Would you like to play another game? [Y] or [N]"

another_game = gets.chomp.upcase
case another_game
when "Y"
when "N"
break
else puts "Please press [Y] or [N]"
end

end
# need to refactor code
# also need to get the "Ace" counting right
22 changes: 11 additions & 11 deletions calculator.rb
View file
Original file line number Diff line number Diff line change
@@ -1,13 +1,13 @@
# 1. string interpolation vs concat
# 2. extract repetitive logic to methods
# 3. keep track of variable types (class)
# 4. variable scope determined by do...end; outer scope vars are available to
# 4. variable scope determined by do...end; outer scope vars are available to
# inner scope, but not vice versa

require 'pry'

def say(msg)
puts "=> #{msg}"
puts "=> #{msg}"
end

say "What's the first number?"
Expand All @@ -22,14 +22,14 @@ def say(msg)
binding.pry

case operator
when '1'
result = num1.to_i + num2.to_i
when '2'
result = num1.to_i - num2.to_i
when '3'
result = num1.to_i * num2.to_i
when '4'
result = num1.to_f / num2.to_f
end
when '1'
result = num1.to_i + num2.to_i
when '2'
result = num1.to_i - num2.to_i
when '3'
result = num1.to_i * num2.to_i
when '4'
result = num1.to_f / num2.to_f
end

say "Result is #{result}"
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