//Blackjack
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <ctime>
using namespace std;
class Card
{
public:
enum rank {ACE = 1, TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT, NINE, TEN,
JACK, QUEEN, KING};
enum suit {CLUBS, DIAMONDS, HEARTS, SPADES};
//overloading << operator so can send Card object to standard output
friend ostream& operator<<(ostream& os, const Card& aCard);
Card(rank r = ACE, suit s = SPADES, bool ifu = true);
//returns the value of a card, 1 - 11
int GetValue() const;
//flips a card; if face up, becomes face down and vice versa
void Flip();
private:
rank m_Rank;
suit m_Suit;
bool m_IsFaceUp;
};
Card::Card(rank r, suit s, bool ifu): m_Rank(r), m_Suit(s), m_IsFaceUp(ifu)
{}
int Card::GetValue() const
{
int value;
// to be filled with content
return value;
}
void Card::Flip()
{
m_IsFaceUp = !(m_IsFaceUp);
}
class Hand
{
public:
Hand();
virtual ~Hand();
//adds a card to the hand
void Add(Card* pCard);
//clears hand of all cards
void Clear();
//gets hand total value, intelligently treats aces as 1 or 11
int GetTotal() const;
protected:
vector<Card*> m_Cards;
};
Hand::Hand()
{
m_Cards.reserve(7);
}
Hand::~Hand()
{
Clear();
}
void Hand::Add(Card* pCard)
{
m_Cards.push_back(pCard);
}
void Hand::Clear()
{
//iterate through vector, freeing all memory on the heap
vector<Card*>::iterator iter = m_Cards.begin();
for (iter = m_Cards.begin(); iter != m_Cards.end(); ++iter)
{
delete *iter;
*iter = 0;
}
//clear vector of pointers
m_Cards.clear();
}
int Hand::GetTotal() const
{
int total;
// to be filled with content
return total;
}
class GenericPlayer : public Hand
{
friend ostream& operator<<(ostream& os, const GenericPlayer& aGenericPlayer);
public:
GenericPlayer(const string& name = "");
virtual ~GenericPlayer();
//indicates whether or not generic player wants to keep hitting
virtual bool IsHitting() const = 0;
//returns whether generic player has busted - has a total greater than 21
bool IsBusted() const;
//announces that the generic player busts
void Bust() const;
protected:
string m_Name;
};
GenericPlayer::GenericPlayer(const string& name):
m_Name(name)
{}
GenericPlayer::~GenericPlayer()
{}
bool GenericPlayer::IsBusted() const
{
return (GetTotal() > 21);
}
void GenericPlayer::Bust() const
{
cout << m_Name << " busts.\n";
}
class Player : public GenericPlayer
{
public:
Player(const string& name = "");
virtual ~Player();
//returns whether or not the player wants another hit
virtual bool IsHitting() const;
//announces that the player wins
void Win() const;
//announces that the player loses
void Lose() const;
//announces that the player pushes
void Push() const;
};
Player::Player(const string& name):
GenericPlayer(name)
{}
Player::~Player()
{}
bool Player::IsHitting() const
{
cout << m_Name << ", do you want a hit? (Y/N): ";
char response;
cin >> response;
return (response == 'y' || response == 'Y');
}
void Player::Win() const
{
cout << m_Name << " wins.\n";
}
void Player::Lose() const
{
cout << m_Name << " loses.\n";
}
void Player::Push() const
{
cout << m_Name << " pushes.\n";
}
class House : public GenericPlayer
{
public:
House(const string& name = "House");
virtual ~House();
//indicates whether house is hitting - will always hit on 16 or less
virtual bool IsHitting() const;
//flips over first card
void FlipFirstCard();
};
House::House(const string& name):
GenericPlayer(name)
{}
House::~House()
{}
bool House::IsHitting() const
{
return (GetTotal() <= 16);
}
void House::FlipFirstCard()
{
if (!(m_Cards.empty()))
{
m_Cards[0]->Flip();
}
else
{
cout << "No card to flip!\n";
}
}
class Deck : public Hand
{
public:
Deck();
virtual ~Deck();
//create a standard deck of 52 cards
void Populate();
//shuffle cards
void Shuffle();
//deal one card to a hand
void Deal(Hand& aHand);
//give additional cards to a generic player
void AdditionalCards(GenericPlayer& aGenericPlayer);
};
Deck::Deck()
{
m_Cards.reserve(52);
Populate();
}
Deck::~Deck()
{}
void Deck::Populate()
{
Clear();
//create standard deck
for (int s = Card::CLUBS; s <= Card::SPADES; ++s)
{
for (int r = Card::ACE; r <= Card::KING; ++r)
{
Add(new Card(static_cast<Card::rank>(r),
static_cast<Card::suit>(s)));
}
}
}
void Deck::Shuffle()
{
random_shuffle(m_Cards.begin(), m_Cards.end());
}
void Deck::Deal(Hand& aHand)
{
// to be filled with content
}
void Deck::AdditionalCards(GenericPlayer& aGenericPlayer)
{
cout << endl;
//continue to deal a card as long as generic player isn't busted and
//wants another hit
while ( !(aGenericPlayer.IsBusted()) && aGenericPlayer.IsHitting() )
{
Deal(aGenericPlayer);
cout << aGenericPlayer << endl;
if (aGenericPlayer.IsBusted())
{
aGenericPlayer.Bust();
}
}
}
class Game
{
public:
Game(const vector<string>& names);
~Game();
//plays the game of blackjack
void Play();
private:
Deck m_Deck;
House m_House;
vector<Player> m_Players;
};
Game::Game(const vector<string>& names)
{
//create a vector of players from a vector of names
vector<string>::const_iterator pName;
for (pName = names.begin(); pName != names.end(); ++pName)
{
m_Players.push_back(Player(*pName));
}
//seed the random number generator
srand(static_cast<unsigned int>(time(0)));
m_Deck.Populate();
m_Deck.Shuffle();
}
Game::~Game()
{}
void Game::Play()
{
//deal initial 2 cards to everyone
vector<Player>::iterator pPlayer;
for (int i = 0; i < 2; ++i)
{
for (pPlayer = m_Players.begin(); pPlayer != m_Players.end(); ++pPlayer)
{
m_Deck.Deal(*pPlayer);
}
m_Deck.Deal(m_House);
}
//hide house's first card
m_House.FlipFirstCard();
//display everyone's hand
for (pPlayer = m_Players.begin(); pPlayer != m_Players.end(); ++pPlayer)
{
cout << *pPlayer << endl;
}
cout << m_House << endl;
//deal additional cards to players
for (pPlayer = m_Players.begin(); pPlayer != m_Players.end(); ++pPlayer)
{
m_Deck.AdditionalCards(*pPlayer);
}
//reveal house's first card
m_House.FlipFirstCard();
cout << m_House << endl;
//deal additional cards to house
m_Deck.AdditionalCards(m_House);
if (m_House.IsBusted())
{
//everyone still playing wins
for (pPlayer = m_Players.begin(); pPlayer != m_Players.end(); ++pPlayer)
{
if ( !(pPlayer->IsBusted()) )
{
pPlayer->Win();
}
}
}
else
{
//compare each player still playing to house
for (pPlayer = m_Players.begin(); pPlayer != m_Players.end();
++pPlayer)
{
if ( !(pPlayer->IsBusted()) )
{
if (pPlayer->GetTotal() > m_House.GetTotal())
{
pPlayer->Win();
}
else if (pPlayer->GetTotal() < m_House.GetTotal())
{
pPlayer->Lose();
}
else
{
pPlayer->Push();
}
}
}
}
//remove everyone's cards
for (pPlayer = m_Players.begin(); pPlayer != m_Players.end(); ++pPlayer)
{
pPlayer->Clear();
}
m_House.Clear();
}
//function prototypes
ostream& operator<<(ostream& os, const Card& aCard);
ostream& operator<<(ostream& os, const GenericPlayer& aGenericPlayer);
int main()
{
cout << "\t\tWelcome to Blackjack!\n\n";
int numPlayers = 0;
while (numPlayers < 1 || numPlayers > 7)
{
cout << "How many players? (1 - 7): ";
cin >> numPlayers;
}
vector<string> names;
string name;
for (int i = 0; i < numPlayers; ++i)
{
cout << "Enter player name: ";
cin >> name;
names.push_back(name);
}
cout << endl;
//the game loop
Game aGame(names);
char again = 'y';
while (again != 'n' && again != 'N')
{
aGame.Play();
cout << "\nDo you want to play again? (Y/N): ";
cin >> again;
}
return 0;
}
//overloads << operator so Card object can be sent to cout
ostream& operator<<(ostream& os, const Card& aCard)
{
const string RANKS[] = {"0", "A", "2", "3", "4", "5", "6", "7", "8", "9",
"10", "J", "Q", "K"};
const string SUITS[] = {"c", "d", "h", "s"};
if (aCard.m_IsFaceUp)
{
os << RANKS[aCard.m_Rank] << SUITS[aCard.m_Suit];
}
else
{
os << "XX";
}
return os;
}
//overloads << operator so a GenericPlayer object can be sent to cout
ostream& operator<<(ostream& os, const GenericPlayer& aGenericPlayer)
{
os << aGenericPlayer.m_Name << ":\t";
vector<Card*>::const_iterator pCard;
if (!(aGenericPlayer.m_Cards.empty()))
{
for (pCard = aGenericPlayer.m_Cards.begin();
pCard != aGenericPlayer.m_Cards.end();
++pCard)
{
os << *(*pCard) << "\t";
}
if (aGenericPlayer.GetTotal() != 0)
{
cout << "(" << aGenericPlayer.GetTotal() << ")";
}
}
else
{
os << "<empty>";
}
return os;
}