lesson 7

lesson_7/Blackjack.hpp

@@ -0,0 +1,343 @@
+#ifndef BLACKJACK_HPP_
+#define BLACKJACK_HPP_
+
+#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};
+
+    friend 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;
+    }
+
+    Card(rank r = ACE, suit s = SPADES, bool ifu = true) :  m_Rank(r), m_Suit(s), m_IsFaceUp(ifu) {}
+
+    int GetValue() const
+    {
+        int value = 0;
+        if (m_IsFaceUp)
+        {
+            value = m_Rank;
+            if (value > 10)
+                value = 10;
+        }
+        return value;
+    }
+
+    void Flip()
+    {
+        m_IsFaceUp = !(m_IsFaceUp);
+    }
+
+private:
+    rank m_Rank;
+    suit m_Suit;
+    bool m_IsFaceUp;
+};
+
+class Hand
+{
+public:
+	Hand()
+	{
+	    m_Cards.reserve(7);
+	}
+
+    virtual ~Hand()
+    {
+        Clear();
+    }
+
+    void Add(Card* pCard)
+    {
+        m_Cards.push_back(pCard);
+    }
+
+    void Clear()
+    {
+        vector<Card*>::iterator iter = m_Cards.begin();
+        for (iter = m_Cards.begin(); iter != m_Cards.end(); ++iter)
+        {
+            delete *iter;
+            *iter = 0;
+        }
+        m_Cards.clear();
+    }
+
+    int GetTotal() const
+    {
+        if (m_Cards.empty())
+            return 0;
+
+        if (m_Cards[0]->GetValue() == 0)
+            return 0;
+
+        int total = 0;
+        vector<Card*>::const_iterator iter;
+        for (iter = m_Cards.begin(); iter != m_Cards.end(); ++iter)
+            total += (*iter)->GetValue();
+
+        bool containsAce = false;
+        for (iter = m_Cards.begin(); iter != m_Cards.end(); ++iter)
+    	{
+            if ((*iter)->GetValue() == Card::ACE)
+                containsAce = true;
+    	}
+
+        if (containsAce && total <= 11)
+            total += 10;
+
+        return total;
+    }
+
+protected:
+    vector<Card*> m_Cards;
+};
+
+class GenericPlayer : public Hand
+{
+    friend 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;
+    }
+
+public:
+    GenericPlayer(const string& name = "") : m_Name(name) {}
+
+    virtual ~GenericPlayer() {}
+
+    virtual bool IsHitting() const = 0;
+
+    bool IsBusted() const
+    {
+        return (GetTotal() > 21);
+    }
+
+    void Bust() const
+    {
+        cout << m_Name << " busts.\n";
+    }
+
+protected:
+    string m_Name;
+};
+
+class Player : public GenericPlayer
+{
+public:
+    Player(const string& name = "") : GenericPlayer(name) {}
+
+    virtual ~Player() {}
+
+    virtual bool IsHitting() const
+    {
+        cout << m_Name << ", do you want a hit? (Y/N): ";
+        char response;
+        cin >> response;
+        return (response == 'y' || response == 'Y');
+    }
+
+    void Win() const
+    {
+        cout << m_Name <<  " wins.\n";
+    }
+
+    void Lose() const
+    {
+        cout << m_Name <<  " loses.\n";
+    }
+
+    void Push() const
+    {
+        cout << m_Name <<  " pushes.\n";
+    }
+};
+
+class House : public GenericPlayer
+{
+public:
+    House(const string& name = "House") : GenericPlayer(name) {}
+
+    virtual ~House() {}
+
+    virtual bool IsHitting() const
+    {
+        return (GetTotal() <= 16);
+    }
+
+    void FlipFirstCard()
+    {
+        if (!(m_Cards.empty()))
+            m_Cards[0]->Flip();
+        else
+    		cout << "No card to flip!\n";
+    }
+};
+
+class Deck : public Hand
+{
+public:
+	Deck()
+	{
+	    m_Cards.reserve(52);
+	    Populate();
+	}
+
+    virtual ~Deck() {}
+
+    void Populate()
+    {
+        Clear();
+        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 Shuffle()
+    {
+        random_shuffle(m_Cards.begin(), m_Cards.end());
+    }
+
+    void Deal(Hand& aHand)
+    {
+        if (!m_Cards.empty())
+        {
+            aHand.Add(m_Cards.back());
+            m_Cards.pop_back();
+        }
+        else
+            cout << "Out of cards. Unable to deal.";
+    }
+
+    void AdditionalCards(GenericPlayer& aGenericPlayer)
+    {
+        cout << endl;
+        while ( !(aGenericPlayer.IsBusted()) && aGenericPlayer.IsHitting() )
+        {
+            Deal(aGenericPlayer);
+            cout << aGenericPlayer << endl;
+
+            if (aGenericPlayer.IsBusted())
+                aGenericPlayer.Bust();
+        }
+    }
+};
+
+class Game
+{
+public:
+	Game(const vector<string>& names)
+	{
+	    vector<string>::const_iterator pName;
+	    for (pName = names.begin(); pName != names.end(); ++pName)
+		{
+	        m_Players.push_back(Player(*pName));
+		}
+
+		srand(static_cast<unsigned int>(time(0)));
+	    m_Deck.Populate();
+	    m_Deck.Shuffle();
+	}
+
+    ~Game() {}
+
+    void Play()
+    {
+        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);
+        }
+
+        m_House.FlipFirstCard();
+
+        for (pPlayer = m_Players.begin(); pPlayer != m_Players.end(); ++pPlayer)
+            cout << *pPlayer << endl;
+
+        cout << m_House << endl;
+
+        for (pPlayer = m_Players.begin(); pPlayer != m_Players.end(); ++pPlayer)
+            m_Deck.AdditionalCards(*pPlayer);
+
+        m_House.FlipFirstCard();
+        cout << endl << m_House;
+
+        m_Deck.AdditionalCards(m_House);
+
+        if (m_House.IsBusted())
+        {
+            for (pPlayer = m_Players.begin(); pPlayer != m_Players.end(); ++pPlayer)
+    		{
+                if ( !(pPlayer->IsBusted()) )
+                    pPlayer->Win();
+    		}
+        }
+        else
+        {
+            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();
+                }
+            }
+
+        }
+
+        for (pPlayer = m_Players.begin(); pPlayer != m_Players.end(); ++pPlayer)
+            pPlayer->Clear();
+
+        m_House.Clear();
+    }
+
+private:
+    Deck m_Deck;
+    House m_House;
+    vector<Player> m_Players;
+};
+
+void exercise_5();
+
+#endif

lesson_7/Date.hpp

@@ -0,0 +1,76 @@
+#ifndef DATE_HPP_
+#define DATE_HPP_
+
+#include <iostream>
+
+class Date
+{
+private:
+	int m_day;
+	int m_month;
+	int m_year;
+public:
+	Date(int day, int month, int year) : m_day(day), m_month(month), m_year(year) {}
+
+	const int& getDay() const
+	{
+		return m_day;
+	}
+
+	const int& getMonth() const
+	{
+		return m_month;
+	}
+
+	const int& getYear() const
+	{
+		return m_year;
+	}
+
+	friend std::ostream& operator<<(std::ostream& os, const Date& d)
+	{
+		os << d.m_day << '.' << d.m_month << '.' << d.m_year;
+
+		return os;
+	}
+};
+
+template <class T>
+class _ptr
+{
+private:
+	T* m_ptr;
+public:
+	_ptr(T* ptr = nullptr) : m_ptr(ptr) {}
+	~_ptr() { delete m_ptr; }
+
+	_ptr(_ptr& p)
+	{
+		m_ptr = p.m_ptr;
+		p.m_ptr = nullptr;
+	}
+
+	_ptr& operator=(_ptr& p)
+	{
+		if (&p == this)
+			return *this;
+
+		delete m_ptr;
+		m_ptr = p.m_ptr;
+		p.m_ptr = nullptr;
+
+		return *this;
+	}
+
+	T& operator*() const { return *m_ptr; }
+	T* operator->() const { return m_ptr; }
+
+	bool isNull() const { return m_ptr == nullptr; }
+};
+
+const _ptr<Date>& compares_dates(const _ptr<Date>&, const _ptr<Date>&);
+
+void exercise_1();
+void exercise_2();
+
+#endif

lesson_7/exercise_1.cpp

@@ -0,0 +1,23 @@
+#include "Date.hpp"
+
+void exercise_1()
+{
+	_ptr<Date> today(new Date(10, 07, 2021));
+
+	std::cout << "Day: " << today->getDay() << std::endl;
+	std::cout << "Month: " << today->getMonth() << std::endl;
+	std::cout << "Year: " << today->getYear() << std::endl;
+	std::cout << "today: " << *today << std::endl;
+
+	_ptr<Date> date;
+
+	std::cout << "today is " << (today.isNull() ? "null\n" : "not null\n");
+	std::cout << "date is " << (date.isNull() ? "null\n" : "not null\n");
+
+	date = today;
+
+	std::cout << "today is " << (today.isNull() ? "null\n" : "not null\n");
+	std::cout << "date is " << (date.isNull() ? "null\n" : "not null\n");
+
+	std::cout << "date: " << *date << std::endl;
+}

lesson_7/exercise_2.cpp

@@ -0,0 +1,41 @@
+#include "Date.hpp"
+
+const _ptr<Date>& compares_dates(const _ptr<Date>& a, const _ptr<Date>& b)
+{
+	if (a->getYear() > b->getYear())
+		return a;
+	else if (a->getYear() < b->getYear())
+		return b;
+	else
+	{
+		if (a->getMonth() > b->getMonth())
+			return a;
+		else if (a->getMonth() < b->getMonth())
+			return b;
+		else
+		{
+			if (a->getDay() > b->getDay())
+				return a;
+			else
+				return b;
+		}
+	}
+}
+
+void swap_dates(_ptr<Date>& a, _ptr<Date>& b)
+{
+	_ptr<Date> temp(a);
+	a = b;
+	b = temp;
+}
+
+void exercise_2()
+{
+	_ptr<Date> date1(new Date(9, 07, 2022));
+	_ptr<Date> date2(new Date(10, 07, 2022));
+	_ptr<Date> date3(new Date(11, 07, 2022));
+
+	std::cout << *compares_dates(date1, date2) << std::endl;
+	swap_dates(date2, date3);
+	std::cout << *compares_dates(date1, date2) << std::endl;
+}

lesson_7/exercise_5.cpp

@@ -0,0 +1,33 @@
+#include "Blackjack.hpp"
+
+void exercise_5()
+{
+	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;
+	}
+}

lesson_7/main.cpp

@@ -0,0 +1,14 @@
+#include <iostream>
+#include "Date.hpp"
+#include "Blackjack.hpp"
+
+using namespace std;
+
+int main()
+{
+	exercise_1();
+	exercise_2();
+	exercise_5();
+
+	return 0;
+}