vending.cpp

#include <iostream>
#include <cstdlib>
#include <string>
#include <ncurses.h>

#define WIDTH 30
#define HEIGHT 10
int startx = 0;
int starty = 0;
char *drinkChoices[] = { 
			"Coke",
			"DrPepper",
			"Sprite",
			"MrPibb",
			"Pepsi",
			"Exit",
			"Maintenence Mode"
		  };
char *serviceChoices[] = { 
			"Check drink inventory",
			"Check cash bin",
			"Quit Maintenance Menu"
		  };
char *moneyChoices[] = { 
			"Dollar Bills",
			"Quarters",
			"Dimes",
			"Nickles",
			"Finish"
			 };
int n_dChoices = sizeof(drinkChoices) / sizeof(char *);
int n_sChoices = sizeof(serviceChoices) / sizeof(char *);
int n_mChoices = sizeof(moneyChoices) / sizeof(char *);

using namespace std;

//////
//  Vending Class
/////
class Vending 
{ 
	public:
		static int cash;

		//////
		//  Vending::Drink Class
		/////
		class Drink
		{
			public: 
				double drinkPrice;
				char drinkName[10];
				int drinkQuantity;
				
				void setInfo(char *i_drinkName, double i_drinkPrice, int i_drinkQuantity) 
				{
					strncpy(drinkName, i_drinkName, 10);
					drinkPrice = i_drinkPrice;
					drinkQuantity = i_drinkQuantity;
				}
				
				void Print() {
					cout << "Name: " << drinkName << "  Cost: " << 
						drinkPrice << "  Quantity Remaining: " << drinkQuantity << "\n";
				}
		};
		void print_menu(WINDOW *menu_win, int highlight)
		{
			int x, y, i;	

			x = 2;
			y = 2;
			box(menu_win, 0, 0);
			for(i = 0; i < n_dChoices; ++i)
			{	if(highlight == i + 1) /* High light the present choice */
				{	wattron(menu_win, A_REVERSE); 
					mvwprintw(menu_win, y, x, "%s", drinkChoices[i]);
					wattroff(menu_win, A_REVERSE);
				}
				else
					mvwprintw(menu_win, y, x, "%s", drinkChoices[i]);
				++y;
			}
			wrefresh(menu_win);
		};
		void print_maintenance_menu(WINDOW *menu_win, int highlight)
		{
			int x, y, i;	

			x = 2;
			y = 2;
			box(menu_win, 0, 0);
			for(i = 0; i < n_sChoices; ++i)
			{	if(highlight == i + 1) /* High light the present choice */
				{	wattron(menu_win, A_REVERSE); 
					mvwprintw(menu_win, y, x, "%s", serviceChoices[i]);
					wattroff(menu_win, A_REVERSE);
				}
				else
					mvwprintw(menu_win, y, x, "%s", serviceChoices[i]);
				++y;
			}
			wrefresh(menu_win);
		};
		void print_currency_menu(WINDOW *menu_win, int highlight)
		{
			int x, y, i;	

			x = 1;
			y = 1;
			box(menu_win, 0, 0);
			for(i = 0; i < n_mChoices; ++i)
			{	if(highlight == i + 1) /* High light the present choice */
				{	wattron(menu_win, A_REVERSE); 
					mvwprintw(menu_win, y, x, "%s", moneyChoices[i]);
					wattroff(menu_win, A_REVERSE);
				}
				else
					mvwprintw(menu_win, y, x, "%s", moneyChoices[i]);
				++y;
			}
			wrefresh(menu_win);
		};
		//////
		//  End Vending::Drink Class
		/////
		
		//////
		//  Function to calulate change based off given cash
		//  Input: double tenderedChange, double DrinkCost
		//  Output: returnedChange in pennies
		/////
		int calculateChange (double tenderedChange, double drinkCost) 
		{
			cout << "\n-------------------------------\n";
			cout << "Making change --> \n";
			printf("\nTendered: $%.2f", tenderedChange);
			printf("\nCost: $%.2f\n\n", drinkCost);
			int price_pennies = drinkCost * 100;
			int cash_pennies = tenderedChange * 100;

			int dollars = ((cash_pennies - price_pennies) / 100);
			int remainder = (cash_pennies - price_pennies - (dollars * 100));
			int quarters = (remainder / 25);
			int dimes = (remainder - quarters * 25) / 10;
			int nickels = (remainder - quarters * 25 - dimes * 10) / 5;
			int pennies = (remainder - quarters * 25 - dimes * 10 - nickels * 5);


			cout << "Change: dollars ("
			<< dollars << "), quarters ("
			<< quarters << "), dimes ("
			<< dimes << "), nickels ("
			<< nickels << "), pennies (" << pennies << ")" << endl;
			cout << "\n-------------------------------\n";
			
			return (cash_pennies - price_pennies);
		}
		
		bool mainScreen(Vending::Drink drinks[]){
				for(int i=0; i<=4; i++){
					if(drinks[i].drinkQuantity < 1){
						cout << "\n\n<--- NEEDS SERVICE --->\n\n";
					}
				}
				
				WINDOW *menu_win;
				int highlight = 1;
				int choice = 0;
				int c;
				double tenderedChange;
				int returnedChange;
				bool stop = false;
			
				initscr();
				clear();
				cbreak();	/* Line buffering disabled. pass on everything */
				startx = (80 - WIDTH) / 2;
				starty = (29 - HEIGHT) / 2;

				menu_win = newwin(HEIGHT, WIDTH, starty, startx);
				keypad(menu_win, TRUE);
			
				mvprintw(1, 22, "-------------------------------------");
				mvprintw(2, 22, "|  Welcome to Vending Machine v1.0  |");
				mvprintw(3, 22, "-------------------------------------");
				for(int i=0; i<=4; i++){
					if(drinks[i].drinkQuantity < 1){
						mvprintw(5, 28, "<--- NEEDS SERVICE --->");
					}
				}
				mvprintw(7, 10, "Use arrow keys to go up and down, Press enter to select a choice");
				refresh();
				print_menu(menu_win, highlight);
				while(1)
				{	c = wgetch(menu_win);
					switch(c)
					{	case KEY_UP:
							if(highlight == 1)
								highlight = n_dChoices;
							else
								--highlight;
							break;
						case KEY_DOWN:
							if(highlight == n_dChoices)
								highlight = 1;
							else 
								++highlight;
							break;
						case 10:
							choice = highlight;
							break;
						default:
							refresh();
							break;
					}
					print_menu(menu_win, highlight);
					if(choice != 0)	/* User did a choice come out of the infinite loop */
						break;
				}	
				mvprintw(23, 0, "You chose choice %d with choice string %s\n", choice, drinkChoices[choice - 1]);
				clrtoeol();
				refresh();
				clear();
				endwin();
			
			
			if((choice!=6)&&(choice!=7)){
				if((drinks[choice-1].drinkQuantity < 1)){
					cout << "Please choose another drink. " << drinks[choice-1].drinkName << " is out.\n\n";
					return false;
				}
			}

			if(choice >= 1 && choice <= 5 ){
				currencyMenu(drinks);
				cout << "Insert money by typing the full dollar and cent amount tendered. Example (1.50 or 0.75)\n";
				cout << "\nInsert Money: ";
				cin >> tenderedChange;
				
				cout << "You chose " << drinks[choice-1].drinkName << "\n";
				printf("The cost of %s is $%.2f\n", drinks[choice-1].drinkName, drinks[choice-1].drinkPrice);
				cout << " \n";
				cout << "Vending " << drinks[choice-1].drinkName << "...\n";
				cout << "\n-------------------------------\n";
				cout << "Drink deployed to basket below";
				cout << "\n-------------------------------\n";
				drinks[choice-1].drinkQuantity--;
				Vending::cash = Vending::cash + (tenderedChange * 100);
				returnedChange = calculateChange(tenderedChange, drinks[choice-1].drinkPrice);
				Vending::cash = Vending::cash - (returnedChange);
				return false;
				} else if (choice == 6) {
					cout << "Canceling transaction and exiting.\n";
					return true;
				} else if (choice == 7) {
					do {
						stop = 	maintenanceModeMenu(drinks);
					} while (stop!=true);
					return false;
				} else {
					cout << "Not a valid selection";
				}
			}
			
		bool currencyMenu(Vending::Drink drinks[])
		{
				WINDOW *menu_win;
				int highlight = 1;
				int choice = 0;
				int c;
				int tenderedChange;
				int dollars;
				int quarters; 
				int dimes;
				int nickles;
				
				bool stop = false;
			
				initscr();
				clear();
				cbreak();	/* Line buffering disabled. pass on everything */
				startx = (80 - WIDTH) / 2;
				starty = (29 - HEIGHT) / 2;

				menu_win = newwin(HEIGHT, WIDTH, starty, startx);
				keypad(menu_win, TRUE);
			
				mvprintw(1, 22, "-------------------------------------");
				mvprintw(2, 22, "|        Insert your change         |");
				mvprintw(3, 22, "-------------------------------------");

				mvprintw(7, 10, "Use arrow keys to go up and down, Press enter to select a choice");
				refresh();
				print_currency_menu(menu_win, highlight);
				while(1)
				{	c = wgetch(menu_win);
					switch(c)
					{	case KEY_UP:
							if(highlight == 1)
								highlight = n_dChoices;
							else
								--highlight;
							break;
						case KEY_DOWN:
							if(highlight == n_dChoices)
								highlight = 1;
							else 
								++highlight;
							break;
						case 10:
							choice = highlight;
							break;
						default:
							refresh();
							break;
					}
					print_currency_menu(menu_win, highlight);
					if(choice != 0)	/* User did a choice come out of the infinite loop */
						break;
				}	
				clrtoeol();
				refresh();
				switch(choice)
				{
					case 1:
					mvprintw(20,0,"How many dollar bills: ");
					scanw("%d", &dollars);
					mvprintw(19,0, "Entered dollars: %d", dollars);
					mvprintw(25,0,"<-Press Any Key->");	/* tell the user to press a key */
					getch();
					clear();
					return false;
					break;
					case 2:
					mvprintw(18,0,"How many quarters: ");
					break;
					case 3:
					mvprintw(18,0,"How many dimes: ");
					break;
					case 4:
					mvprintw(18,0,"How many nickles: ");
					break;
					case 5:
					return true;
					break;
					default:
					break;
				}
				clear();
				endwin();
		}
		//////
		//  End Vending Class Member Functions
		/////
		
		//////
		//  Vending Class Maintenance Function Block
		/////
		bool maintenanceModeMenu(Vending::Drink drinks[]) 
		{
			WINDOW *menu_win;
			int highlight = 1;
			int choice = 0;
			int c;
			
			initscr();
			cbreak();	/* Line buffering disabled. pass on everything */
			startx = (80 - WIDTH) / 2;
			starty = (24 - HEIGHT) / 2;
			menu_win = newwin(HEIGHT, WIDTH, starty, startx);
			keypad(menu_win, TRUE);
		
			mvprintw(1, 22, "-------------------------------------");
			mvprintw(2, 22, "|   Vending Machive Service Menu    |");
			mvprintw(3, 22, "-------------------------------------");
			mvprintw(6, 10, "Use arrow keys to go up and down, Press enter to select a choice");
			refresh();
			print_maintenance_menu(menu_win, highlight);
			while(1)
			{	c = wgetch(menu_win);
				switch(c)
				{	case KEY_UP:
						if(highlight == 1)
							highlight = n_sChoices;
						else
							--highlight;
						break;
					case KEY_DOWN:
						if(highlight == n_sChoices)
							highlight = 1;
						else 
							++highlight;
						break;
					case 10:
						choice = highlight;
						break;
					default:
						mvprintw(24, 0, "Charcter pressed is = %3d Hopefully it can be printed as '%c'", c, c);
						refresh();
						break;
				}
				print_maintenance_menu(menu_win, highlight);
				if(choice != 0)	/* User did a choice come out of the infinite loop */
					break;
			}	
			clrtoeol();
			refresh();

			switch(choice)
			{
				case 1:
				getDrinkInventory(drinks);
				mvprintw(25,0,"<-Press Any Key->");	/* tell the user to press a key */
				getch();
				clear();
				return false;
				break;
				case 2:
				mvprintw(18,0,"There is $%.2f remaining in the machine", (Vending::cash / 100.0));
				mvprintw(25,0,"<-Press Any Key->");	/* tell the user to press a key */
				getch();
				clear();
				return false;
				case 3:
				clear();
				endwin();
				return true;
				break;
				default:
				break;
			}
		}
		
		void getDrinkInventory(Vending::Drink drinks[])
		{
			for(int i=0; i<=4; i++){
				mvprintw(18+i,0,"Name: %s Cost: %.2f Quantity: %d",drinks[i].drinkName, drinks[i].drinkPrice, drinks[i].drinkQuantity);
			}
		}

		//////
		//  End Vending Class Maintenance Function Block
		/////

};
//////
//  End Vending Class
/////
		
//Initialize static class member fortotal cash in the machine
int Vending::cash = 2000;

//////
//  Main System Loop
/////
int main (int argc, char const *argv[])
{
	Vending::Drink drinks[5];

	drinks[0].setInfo("Coke", 1.00, 1);
	drinks[1].setInfo("DrPepper", 1.25, 5);
	drinks[2].setInfo("Sprite", 1.50, 5);
	drinks[3].setInfo("MrPibb", 1.50, 5);
	drinks[4].setInfo("Pepsi", 1.50, 5);

	bool done = false;
	char continueChoice;

	do {
		Vending vendingTransaction;

		done = vendingTransaction.mainScreen(drinks);
		if (done != false) {
			return 0;
		}
		cout << "Would you like to make another purchase (y/n): ";
		cin >> continueChoice;
		if (continueChoice == 'n'){
			done = true;
		}
	} while (!done);

	return 0;
}
//////
//  End Main System Loop
/////