Projects
============

Roulette
--------
.. code-block:: cpp
   :linenos:
   :class: scrollable-code

   #include <iostream>
   #include <cstdlib>
   #include <ctime>
   #include <random>
   #include <string>

   using namespace std;

   // Generate random number (Roulette spin)
   int generatenum() {
       static random_device rd;
       static mt19937 gen(rd());
       static uniform_int_distribution<int> dist(0,37);
       return dist(gen);
   }

   // Figures out color each round based on number
   string getcolor(int number) {
       if (number == 0 || number == 37)
           return "Green";

       static string colors[38] = {
           "Green", "Red", "Black", "Red", "Black", "Red", "Black",
           "Red", "Black", "Red", "Black", "Black", "Red", "Black",
           "Red", "Black", "Red", "Black", "Red", "Red", "Black",
           "Red", "Black", "Red", "Black", "Red", "Black", "Red",
           "Black", "Black", "Red", "Black", "Red", "Black", "Red",
           "Black", "Red"
       };
       return colors[number];
   }

   // Display betting options with payout ratios
   void instructions() {
       cout << "================= ROULETTE BETTING OPTIONS =================" << endl;
       cout << "1. Red 1:1      - Bet that the number will be red" << endl;
       cout << "2. Black 1:1    - Bet that the number will be black" << endl;
       cout << "3. Odd 1:1      - Bet that the number will be odd" << endl;
       cout << "4. Even 1:1     - Bet that the number will be even" << endl;
       cout << "5. Low 1:1      - Bet that the number will be 1 to 18" << endl;
       cout << "6. High 1:1     - Bet that the number will be 19 to 36" << endl;
       cout << "7. Dozen 1 2:1  - Bet that the number will be 1 to 12" << endl;
       cout << "8. Dozen 2 2:1  - Bet that the number will be 13 to 24" << endl;
       cout << "9. Dozen 3 2:1  - Bet that the number will be 25 to 36" << endl;
       cout << "10. Column 1 2:1- Bet that the number will be in 1st column" << endl;
       cout << "11. Column 2 2:1- Bet that the number will be in 2nd column" << endl;
       cout << "12. Column 3 2:1- Bet that the number will be in 3rd column" << endl;
       cout << "13. Green 17:1  - Bet that the number will be 0 or 00" << endl;
       cout << "============================================================" << endl;
       cout << "Enter the number corresponding to your bet type." << endl;
   }

   // Bet result class
   class BetResult {
   public:
       bool win;
       int payout;
   };

   // Check if user won
   BetResult result(int choice,int spin,const string &color) {
       BetResult r;
       if(choice == 1){ r.win = (color=="Red"); r.payout=1; }
       else if(choice == 2){ r.win = (color=="Black"); r.payout=1; }
       else if(choice == 3){ r.win = (spin!=0 && spin!=37 && spin%2==1); r.payout=1; }
       else if(choice == 4){ r.win = (spin!=0 && spin!=37 && spin%2==0); r.payout=1; }
       else if(choice == 5){ r.win = (spin>=1 && spin<=18); r.payout=1; }
       else if(choice == 6){ r.win = (spin>=19 && spin<=36); r.payout=1; }
       else if(choice == 7){ r.win = (spin>=1 && spin<=12); r.payout=2; }
       else if(choice == 8){ r.win = (spin>=13 && spin<=24); r.payout=2; }
       else if(choice == 9){ r.win = (spin>=25 && spin<=36); r.payout=2; }
       else if(choice == 10){ r.win = (spin%3==1); r.payout=2; }
       else if(choice == 11){ r.win = (spin%3==2); r.payout=2; }
       else if(choice == 12){ r.win = (spin%3==0); r.payout=2; }
       else if(choice == 13){ r.win = (spin==0 || spin==37); r.payout=17; }
       return r;
   }

   int main() {
       bool play = true;
       int resultnum, choice, bet, total;
       char again;
       int z=0;

       cout << "How much money will you be playing with? (# only, no $): ";
       cin >> total;

       while(play) {
           instructions();
           cin >> choice;

           while(z<1) {
               cout << "\nHow much money would you like to bet? (ex:50)\nBet: ";
               cin >> bet;
               if(bet>total){ cout<<"Not enough money, enter different amount."<<endl; }
               else{ z=1; }
           }

           resultnum = generatenum();
           if(resultnum==37) cout<<"00";
           else cout<<resultnum;

           string color = getcolor(resultnum);
           cout<<" "<<color<<endl;

           BetResult r = result(choice,resultnum,color);
           int winamount = bet*r.payout;
           bool win = r.win;

           if(win){ cout<<"You Win!"<<endl; total+=winamount; cout<<"Your total is: $"<<total<<endl; }
           else{ cout<<"You lose"<<endl; total-=bet; cout<<"Your total is: $"<<total<<endl; }

           z=0;

           if(total>0){
               cout<<"play again?(y/n): ";
               cin>>again;
               play = (again=='y');
           } else { cout<<"No more money. Game over"<<endl; play=false; }
       }
       return 0;
   }