I See Sharp: Roulette Implementation in C

It's a hot sweaty evening in Mr. Nursoo's theory of programming class. At first glance, the lecturer looks like a sadistic bastard. At second glance... well, it's the same - he's still a sadistic bastard.

He's strolling in front of the whole class as if he was processing the real world in background, barely taking input from the sad faces of his students. He's explaining about the assignment. And I'm not there, because I got exempted from the programming module.

It's not about the lecturer. I had a few lectures with the guy before receiving my exemptions. I can't judge whether he's a good programmer or not - I never saw any code of his, but he does look like he's got his shit together. Sadistic bastard or not, I like him. He stands out of the group of regular lecturers. Some might think his class is boring - but I don't share that opinion. Alright, his voice might be euthanasiating, but anybody who would care to listen to the contents might learn a lot. If I didn't have all those ongoing projects, I wouldn't have taken the exemptions. Nor would I have been so frequently absent from university.

A few friends of mine asked for help on the assignment. It's actually a game of American Roulette implemented in C. I thought I'd also put a post up on my programming blog, for my buddies, and if anybody else needed help on that (yes, I'm talking about you!).

"HA! That's freakin' easy," I thought. Fuck it was.

I tried implementing the whole thing late at night, thinking that it might take around 30-45 minutes, but I got stuck on real basic shit. Like, structures. And pointers. And arrays of structures. And pointers to arrays of structures. And I believe that in the process, I managed to get some of the most stupid compiler messages ever, ever.

I didn't finish it on the first day. I only managed to create a few header files, and declare the structures.

On the second day, my friends visited me. I got back to work on the program, promising them to finish. I got stuck with passing parameter passing by reference. It just didn't want to work. Of course, I had fucked a few things up in the code - that's why. Pointers can be real bitches if you don't know the right syntax. I have a lot of experience with pointers, but that's in Delphi and the good old Pascal. Tired of trying, I moved on to using global variables. You can't blame me, there were people sitting right behind me expecting me to finish it. Which I didn't.

My friends left, and the program was about 60% complete. I learnt that Mr. Nursoo had requested the students NOT to use global variables. Sadistic bastard. On the third day, I rebuilt everything. I created a structure within another structure, and looked up parameter passing by reference in C on the net. I also copied a few lines of code with which helped to fiddle with the console's display colours and cursor. I got bored on day 3.

On day 4, I resumed work. I had already totalled around 4 hours of programming on the project. For fuck's sake, it's a Roulette program! A roulette program! I mean, seriously.

After another hour of coding, I finished the thing.

291 lines in the Main.c module.
553 lines in the Menus.h module.
134 lines in the Misc.h module.
331 lines in the Structures.h module.
1309 lines of smelly C code. Fully commented, of course.

Right. It was there! And working!

As you can see, my code spans across 4 files - the entry point of the application is located in Main.c, and the rest are header files that I created. The Menus.h handle most printf methods. The Misc.h header contains misc. functions such as generating random numbers, and a few functions I copied from the net. I didn't author the GotoXY and SetRGB functions - found those on the net. They turned out to be pretty useful though :) Finally, the Structures.h contains the two structures contained within the program, and a bunch of methods to deal with them.

To run the code, place all files within the same folder, and run the main.c file.

The game works as follows: When the program starts, the user is prompted to enter the number of players (between 2 and 10). Right after, the user needs to enter the name of each player. Each player has a starting balance, which can be altered by changing the startBalance constant. As soon as that's done, the program then takes the user to the first player's menu. From there, the player can bet on one or many numbers, bet on red, black, even, odd, hi, low, reset his/her bets, skip the turn or exit the application.

When the user's betting, he can see all the previous bets neatly laid out in front of him. I added a maximum bet setting on each type of bet - i.e. you can bet a max of $100 on a number (or US$100 on red, black, even, odd, hi or low). That maximum bet can be changed by altering the maxBet constant.

When a player's done placing his/her bets, he/she has to end his turn. It'll be the other player's turn to start betting. The same stuff goes on for all the following players, until all of them have placed their bets. Note that a player can also bet nothing at all, which means that his balance will remain unaltered during the current turn. What's cool with my program is that players can bet on several things, as long as their balance and the maximum bet allows them to.

When all the players are done betting, a random number is drawn, and an interface is displayed which shows all the player's original balance, their earnings, and their new balance. Any player with a balance of zero is set as GameOver, and all his/her future turns will be skipped.

The game continues until everybody is GameOver, or until somebody exits from the player menu. That's it!

If you plan to copy the code without understanding, Nursoo WILL KNOW because you'll look like a dumbass as soon as he starts asking questions.

If you plan to study the program I wrote, you might want to learn about:

Functions, and return values
Passing parameters to functions by reference
Structures
Arrays
Pointers to arrays, structures, and arrays of structures.

Here goes the main.c file:


/*
    Roulette program - by Rowan R. Jugernauth
    File description: Main application program with entry point
    Email: rowan.rishi@gmail.com
*/

#include <stdio.h>
#include <stdlib.h>
#include "Menus.h"

//starting player balance
const int startBalance = 5000;

//maximum bet
const int maxBet = 100;


//Main function of program
int main()
{
//number of players
int numPlayers;

//All players in the game
struct Player players[10];

//display the main menu
DisplayMenu();

//set the number of players
numPlayers = EnterPlayers();

//temporary variable
int i = 0;

//loop through the players and input their details
for (i = 0; i<=numPlayers-1; i++)
{
ClrScr();
printf("\n\n\n\tPlayer %d", i+1);
players[i] = InputPlayerDetails(startBalance);
}

//check if the game is over for all players
while(!IsGameOver(players, numPlayers))
{
//loop through the players and have them to play
for (i = 0; i<=numPlayers-1; i++)
{
        if (players[i].gameOver == 0)
        {
             StartGame(&players[i]);
        }
}

//generate random number and display score
Payout(&players, numPlayers);
}

//end program
Quit();
}


//starts the game for a certain player
void StartGame(struct Player * currentPlayer)
{
//reset all bets
ResetPlayerBets(currentPlayer, currentPlayer->balance);

//create a variable to define the user's choice    
int choice = -1;
int numBet = 0;
int amountBet = 0;
int totalBets = 0;

do
{
totalBets = CountPlayerBets(*currentPlayer);
PrintPlayerDetails(*currentPlayer);
choice = DisplayPlayerMenu();

switch(choice)
{
    case 0: //view board
        //view player bets
        DrawBoard(*currentPlayer);

        //wait for user to press key
        getch();

        //invalidate choice
        choice = -1;
        break;

    case 1: //bet on number
        //get which number the user just bet on
        numBet = BetOnNumber(*currentPlayer);

        //get the amount the user is betting
        amountBet = GetBetAmount(*currentPlayer, maxBet, currentPlayer->numbers[numBet+1].bet);

        //increase bet on number
        currentPlayer->numbers[numBet+1].bet += amountBet;

        //increase bet on number
        currentPlayer->balance -= amountBet;

        //invalidate choice
        choice = -1;
        break;

    case 2: //bet on red
        //display the board
        BetOnRed(*currentPlayer);

        //get the amount the user is betting
        amountBet = GetBetAmount(*currentPlayer, maxBet, currentPlayer->betRed);

        //increase bet on number
        currentPlayer->betRed += amountBet;

        //increase bet on number
        currentPlayer->balance -= amountBet;

        //invalidate choice
        choice = -1;                        
        break;

    case 3: //bet on black
        //display the board
        BetOnBlack(*currentPlayer);

        //get the amount the user is betting
        amountBet = GetBetAmount(*currentPlayer, maxBet, currentPlayer->betBlack);

        //increase bet on number
        currentPlayer->betBlack += amountBet;

        //increase bet on number
        currentPlayer->balance -= amountBet;

        //invalidate choice
        choice = -1;
        break;

    case 4: //bet on even
        //display the board
        BetOnEven(*currentPlayer);

        //get the amount the user is betting
        amountBet = GetBetAmount(*currentPlayer, maxBet, currentPlayer->betEven);

        //increase bet on number
        currentPlayer->betEven += amountBet;

        //increase bet on number
        currentPlayer->balance -= amountBet;

        //invalidate choice
        choice = -1;    
        break;

    case 5: //bet on odd
        //display the board
        BetOnOdd(*currentPlayer);

        //get the amount the user is betting
        amountBet = GetBetAmount(*currentPlayer, maxBet, currentPlayer->betOdd);

        //increase bet on number
        currentPlayer->betOdd += amountBet;

        //increase bet on number
        currentPlayer->balance -= amountBet;

        //invalidate choice
        choice = -1;
        break;

    case 6: //bet on low 18
        //display the board
        BetOnLo(*currentPlayer);

        //get the amount the user is betting
        amountBet = GetBetAmount(*currentPlayer, maxBet, currentPlayer->betLo);

        //increase bet on number
        currentPlayer->betLo += amountBet;

        //increase bet on number
        currentPlayer->balance -= amountBet;

        //invalidate choice
        choice = -1;
        break;

    case 7: //bet on hi 18
        //display the board
        BetOnHi(*currentPlayer);

        //get the amount the user is betting
        amountBet = GetBetAmount(*currentPlayer, maxBet, currentPlayer->betHi);

        //increase bet on number
        currentPlayer->betHi += amountBet;

        //increase bet on number
        currentPlayer->balance -= amountBet;

        //invalidate choice
        choice = -1;
        break;

    case 8: //reset bets
        //reset the player's bets
        ResetPlayerBets(currentPlayer, currentPlayer->balance + CountPlayerBets(*currentPlayer));

        //invalidate choice
        choice = -1;
        break;

    case 9: //skip turn
        break;

    case 10: //call exit to terminate the program
        Quit();
        break;
}

} while ((choice < 1) || (choice > 10));
}

//Generate the winning number and display the earnings
void Payout(struct Player (*allPlayers)[10], int numPlayers)
{
//set winning number
int winningNum = Rand();

//Display winning information for the number
DisplayWinningInfo(winningNum);

//temporary integer
int i = 0;

//initialize a blank array for each player's earnings
int earnings[10] = {0,0,0,0,0,0,0,0,0,0};


//loop through the players and calculate their earnings
for (i=0; i<=numPlayers-1; i++)
{
if (IsNumberRed(winningNum))
{
    earnings[i] += (*allPlayers)[i].betRed * 2;
}

if (IsNumberBlack(winningNum))
{
    earnings[i] += (*allPlayers)[i].betBlack * 2;
}

if (IsNumberEven(winningNum))
{
    earnings[i] += (*allPlayers)[i].betEven * 2;
}

if (IsNumberOdd(winningNum))
{
    earnings[i] += (*allPlayers)[i].betOdd * 2;
}

if (IsNumberHi(winningNum))
{
    earnings[i] += (*allPlayers)[i].betHi * 2;
}

if (IsNumberLo(winningNum))
{
    earnings[i] += (*allPlayers)[i].betLo * 2;
}

earnings[i] += (*allPlayers)[i].numbers[winningNum].bet * 36;
}

//display all the earnings
DisplayEarnings(*allPlayers, earnings, numPlayers);

//increment the player's earnings and set their game over status
PayEarnings(*allPlayers, earnings, numPlayers);
}

There goes the Menu.h file:


/*
    Roulette program - by Rowan R. Jugernauth
    File description: Header file which contains the menu and misc. printing functions
    Email: rowan.rishi@gmail.com
*/

#include <stdio.h>
#include "Misc.h"
#include "Structures.h"


//display the welcome menu
void DisplayMenu()
{
ClrScr();
SetRGB(3);
GotoXY(26,0);
printf("=== Rowan's Roulette 1.0 ===");
}


//requests the user for the number of players
int EnterPlayers()
{
int players = 0;

while ((players < 2) || (players > 9))
{
 SetRGB(6);
 GotoXY(12,10);
 printf("Please enter the number of players [between 2 and 9]: ");
 SetRGB(2);
 scanf("%d", &players);

 if ((players < 2) || (players > 9))
 {
      GotoXY(12,10);
      SetRGB(1);     
      printf("\t\t\t\t\t\t\t\t[wrong]"); //clear the line and write "wrong" at the end.
 }
}

return players;
}


//input details of each player
struct Player InputPlayerDetails(int startBalance)
{
//create a new player
struct Player newPlayer;

//set the new player's game over to false
newPlayer.gameOver = 0;

SetRGB(6);
printf("\n\tPlease enter the player's name: ");
SetRGB(2);
scanf("%s", &newPlayer.name);


ResetPlayerBets(&newPlayer, startBalance);

return newPlayer;
}


//Display the player's details
void PrintPlayerDetails(struct Player somePlayer)
{
//display the top menu
DisplayMenu();

//count the player's bet
int sumBets = CountPlayerBets(somePlayer);

SetRGB(0);
GotoXY(60,2);
printf("%s's turn", somePlayer.name);

SetRGB(6);
GotoXY(60,3);
printf("Balance:");

GotoXY(69,3);
SetRGB(2);
printf("%d", somePlayer.balance);

SetRGB(6);
GotoXY(60,4);
printf("Sum Bet:");

GotoXY(69,4);
SetRGB(2);
printf("%d", sumBets);
}


//Display the menu intended for the player
int DisplayPlayerMenu()
{
int choice = 0;

printf("\n\n\t\t0. View current bets");
printf("\n\t\t1. Bet on a number (straight)");
printf("\n\t\t2. Bet on Red");
printf("\n\t\t3. Bet on Black");
printf("\n\t\t4. Bet on Even");
printf("\n\t\t5. Bet on Odd");
printf("\n\t\t6. Bet on Low-18");
printf("\n\t\t7. Bet on High-18");
printf("\n\t\t8. Clear all bets");
printf("\n\t\t9. Next player");
printf("\n\t\t10. Exit");

SetRGB(6);
printf("\n\n\tPlease enter a choice [0-10]: ");
SetRGB(2);
scanf("%d", &choice);
return choice;
}


//Asks the user to input a number to bet on
int BetOnNumber(struct Player currentPlayer)
{
//draw the board
DrawBoard(currentPlayer);
GotoXY(60,1);
SetRGB(3);
printf("Betting on a number");

int choice = -1;

do
{
 SetRGB(2);
 GotoXY(10, 22);
 SetRGB(6);
 printf("Please enter a number between 0 and 36. Enter -1 for 00: ");
 SetRGB(2);
 scanf("%d", &choice);

 if ((choice < -1 ) || (choice > 36))
 {
     SetRGB(1);
     GotoXY(10,22);
     printf("\t\t\t\t\t\t\t\t[wrong]"); //clear the line and write "wrong" at the end
 }

} while((choice < -1 ) || (choice > 36));

return choice;
}


//User is betting on red
void BetOnRed(struct Player currentPlayer)
{
//draw the board
DrawBoard(currentPlayer);

GotoXY(60,1);
SetRGB(3);
printf("Betting on red");
}

//User is betting on red
void BetOnBlack(struct Player currentPlayer)
{
//draw the board
DrawBoard(currentPlayer);

GotoXY(60,1);
SetRGB(3);
printf("Betting on black");
}

//User is betting on red
void BetOnEven(struct Player currentPlayer)
{
//draw the board
DrawBoard(currentPlayer);

GotoXY(60,1);
SetRGB(3);
printf("Betting on even");
}

//User is betting on red
void BetOnOdd(struct Player currentPlayer)
{
//draw the board
DrawBoard(currentPlayer);

GotoXY(60,1);
SetRGB(3);
printf("Betting on odd");
}

//User is betting on red
void BetOnLo(struct Player currentPlayer)
{
//draw the board
DrawBoard(currentPlayer);

GotoXY(60,1);
SetRGB(3);
printf("Betting on low-18");
}

//User is betting on red
void BetOnHi(struct Player currentPlayer)
{
//draw the board
DrawBoard(currentPlayer);

GotoXY(60,1);
SetRGB(3);
printf("Betting on high-18");
}

//Asks the user to input a bet amount
int GetBetAmount(struct Player currentPlayer, int maxBet, int currentBet)
{
int balance = currentPlayer.balance;
int betAmount = -1;

do
{
 SetRGB(0);
 GotoXY(10, 22);
 printf("\t\t\t\t\t\t\t\t"); //clear the line
 GotoXY(10, 22);
 printf("Amount already placed: %d", currentBet);
 SetRGB(2);
 GotoXY(10, 23);
 printf("\t\t\t\t\t\t\t\t"); //clear the line
 GotoXY(10, 23);
 SetRGB(6);
 printf("Please enter a bet amount between 0 and %d: ", maxBet);
 SetRGB(2);
 scanf("%d", &betAmount);

 if (betAmount > balance || betAmount > maxBet || (betAmount+currentBet > maxBet))
 {
     if ((betAmount+currentBet) > maxBet)
     {
         GotoXY(10, 24);
         printf("\t\t\t\t\t\t\t\t");
         GotoXY(10, 24);
         SetRGB(1);
         printf("This amount unfortunately exceeds the maximum bet.");
     }
     else
     if (betAmount > balance)
     {
         GotoXY(10, 24);
         printf("\t\t\t\t\t\t\t\t"); //clear the line
         GotoXY(10, 24);
         SetRGB(1);
         printf("This amount unfortunately exceeds your balance.");
     }
     getch();
 }     

} while ((betAmount < 0) || (betAmount > balance) || (betAmount+currentBet > maxBet));

return betAmount;
}

//Draw the board and display all of a player's bets
void DrawBoard(struct Player currentPlayer)
{
ClrScr();
int curX = 10;
int curY = 5;
int i = 2;

GotoXY(20, 2);
SetRGB(2);
printf("00");

GotoXY(30, 2);
printf("0");

SetRGB(0);
GotoXY(20, 3);
if (currentPlayer.numbers[0].bet > 0)
{
  SetRGB(9);
}
else
{
  SetRGB(0);
}
printf("$%d", currentPlayer.numbers[0].bet);

GotoXY(30, 3);
if (currentPlayer.numbers[1].bet > 0)
{
  SetRGB(9);
}
else
{
  SetRGB(0);
}
printf("$%d", currentPlayer.numbers[1].bet);

while (i <= 37)
{
 GotoXY(curX, curY);
 SetRGB(2);
 printf("%d",currentPlayer.numbers[i].value-1);
 if (currentPlayer.numbers[i].color == 'r')
 {
      SetRGB(1);
      printf("[R]");
 }
 //else
 //{
 //    SetRGB(5);
 //    printf("[B]");
 //}    

 if (currentPlayer.numbers[i].bet > 0)
 {
      SetRGB(9);
 }
 else
 {
      SetRGB(0);
 }

 GotoXY(curX, curY+1);
 printf("$%d",currentPlayer.numbers[i].bet);

 if (curX < 50)
 {
     curX += 10;
 }
 else
 {
     curX = 10;
     curY += 2;
 }

 i++;
}

SetRGB(2);
GotoXY(60, 5);
printf("HI Bets: ");

if (currentPlayer.betHi > 0)
{
  SetRGB(9);
}
else
{
  SetRGB(0);
}

GotoXY(75, 5);
printf("%d", currentPlayer.betHi);

SetRGB(2);
GotoXY(60, 6);
printf("LO Bets: ");
if (currentPlayer.betLo > 0)
{
  SetRGB(9);
}
else
{
  SetRGB(0);
}
GotoXY(75, 6);
printf("%d", currentPlayer.betLo);


SetRGB(2);
GotoXY(60, 7);
printf("RED Bets: ");
if (currentPlayer.betRed > 0)
{
  SetRGB(9);
}
else
{
  SetRGB(0);
}
GotoXY(75, 7);
printf("%d", currentPlayer.betRed);

SetRGB(2);
GotoXY(60, 8);
printf("BLACK Bets: ");
if (currentPlayer.betBlack > 0)
{
  SetRGB(9);
}
else
{
  SetRGB(0);
}
GotoXY(75, 8);
printf("%d", currentPlayer.betBlack);


SetRGB(2);
GotoXY(60, 9);
printf("EVEN Bets: ");
if (currentPlayer.betEven > 0)
{
  SetRGB(9);
}
else
{
  SetRGB(0);
}
GotoXY(75, 9);
printf("%d", currentPlayer.betEven);

SetRGB(2);
GotoXY(60, 10);
printf("ODD Bets: ");
if (currentPlayer.betOdd > 0)
{
  SetRGB(9);
}
else
{
  SetRGB(0);
}
GotoXY(75, 10);
printf("%d", currentPlayer.betOdd);

}

//displays information about winning number
void DisplayWinningInfo(int winningNumber)
{
winningNumber -= 1;

ClrScr();
GotoXY(22,8);
SetRGB(5);
printf("And the winning number is... ");
SetRGB(2);

if (winningNumber == -1)
{
 printf("00!");
}
else
{
 printf("%d!", winningNumber);
}

GotoXY(20,10);
SetRGB(0);

if (IsNumberRed(winningNumber))
{
 printf("\n\t\tWinning number is Red!");
}

if (IsNumberBlack(winningNumber))
{
 printf("\n\t\tWinning number is Black!");
}

if (IsNumberEven(winningNumber))
{
 printf("\n\t\tWinning number is Even!");
}

if (IsNumberOdd(winningNumber))
{
 printf("\n\t\tWinning number is Odd!");
}

if (IsNumberHi(winningNumber))
{
 printf("\n\t\tWinning number is Hi!");
}

if (IsNumberLo(winningNumber))
{
 printf("\n\t\tWinning number is Lo!");
}

getch();
}

//Display each player's earnings
void DisplayEarnings(struct Player (*allPlayers)[10], int earnings[10], int numPlayers)
{
ClrScr();
int i = 0;

GotoXY(33,2);
printf("Player Scores");

SetRGB(5);
GotoXY(10,6);
printf("Player Name");
GotoXY(30,6);
printf("Old Balance");
GotoXY(45,6);
printf("Earnings");
GotoXY(60,6);
printf("New Balance");

int curY = 7;

SetRGB(5);
for (i = 0; i<=numPlayers-1; i++)
{
 SetRGB(0);

 GotoXY(10, curY);
 printf("%s", (*allPlayers)[i].name);

 SetRGB(0);

 GotoXY(30, curY);
 printf("%d", (*allPlayers)[i].balance);

 SetRGB(0);

 GotoXY(45, curY);
 printf("%d", earnings[i]);

 SetRGB(2);

 GotoXY(60, curY);
 printf("%d", earnings[i]+(*allPlayers)[i].balance);

 if ((*allPlayers)[i].balance + earnings[i] <= 0)
 {
      SetRGB(1);
      GotoXY(70, curY);
      printf("GAME OVER");
 }

 curY++;

}

getch();
}

This is the Misc.h file:


/*
    File description: Miscelleaneous functions
    Most functions are foreign implementations of useful functions
    Email: rowan.rishi@gmail.com
*/

#include <stdlib.h>
#include <windows.h>

//Clear the screen
void ClrScr()
{
system("CLS");
}

//THIS IS NOT CODE FROM ME. I COPIED THAT FROM THE NET
//go to specific coordinates on the screen 
void GotoXY(int x, int y)
{
static HANDLE hStdout = NULL;
COORD coord;

coord.X = x;
coord.Y = y;

if(!hStdout)
{
hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
}

SetConsoleCursorPosition(hStdout,coord);
}

//THIS IS NOT CODE FROM ME. I COPIED THAT FROM THE NET
// Set text and background colors.
void SetRGB(int color)
{
switch (color)
{
case 0:    // White on Black
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY |
     FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
 break;
case 1:    // Red on Black
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY |
     FOREGROUND_RED);
 break;
case 2:    // Green on Black
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY |
     FOREGROUND_GREEN);
 break;
case 3:    // Yellow on Black
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY |
     FOREGROUND_RED | FOREGROUND_GREEN);
 break;
case 4:    // Blue on Black
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY |
     FOREGROUND_BLUE);
 break;
case 5:    // Magenta on Black
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY |
     FOREGROUND_RED | FOREGROUND_BLUE);
 break;
case 6:    // Cyan on Black
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY |
     FOREGROUND_GREEN | FOREGROUND_BLUE);
 break;
case 7:    // Black on Gray
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),BACKGROUND_INTENSITY |
     BACKGROUND_INTENSITY);
 break;
case 8:    // Black on White
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),BACKGROUND_INTENSITY |
     FOREGROUND_INTENSITY | BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE);
 break;
case 9:    // Red on White
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),BACKGROUND_INTENSITY |
     FOREGROUND_INTENSITY | BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE |
     FOREGROUND_RED);
 break;
case 10: // Green on White
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),BACKGROUND_INTENSITY |
     FOREGROUND_INTENSITY | BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE |
     FOREGROUND_GREEN);
 break;
case 11: // Yellow on White
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),BACKGROUND_INTENSITY |
     FOREGROUND_INTENSITY | BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE |
     FOREGROUND_RED | FOREGROUND_GREEN);
 break;
case 12: // Blue on White
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),BACKGROUND_INTENSITY |
     FOREGROUND_INTENSITY | BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE |
     FOREGROUND_BLUE);
 break;
case 13: // Magenta on White
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),BACKGROUND_INTENSITY |
     FOREGROUND_INTENSITY | BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE |
     FOREGROUND_RED | FOREGROUND_BLUE);
 break;
case 14: // Cyan on White
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),BACKGROUND_INTENSITY |
     FOREGROUND_INTENSITY | BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE |
     FOREGROUND_GREEN | FOREGROUND_BLUE);
 break;
case 15: // White on White
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),BACKGROUND_INTENSITY |
     FOREGROUND_INTENSITY | BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE |
     FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
 break;
default : // White on Black
 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY |
     FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
 break;
}
}

//generate a random number between 0 and 37
int Rand()
{
return ( (rand() % (38)));
//return 1;
}

//method to quit program
void Quit()
{
ClrScr();
SetRGB(2);
GotoXY(12, 10);
printf("By Rowan R. Jugernauth. Email: ");
SetRGB(0);
printf("rowan.rishi@gmail.com");
getch();
exit(0);
}

And finally, the structures.h file:


/*
    Roulette program - by Rowan R. Jugernauth
    File description: Contains structures and codes to deal with those structures
    Email: rowan.rishi@gmail.com
*/


//Defining a casino number
struct Number
{
//value of number
int value;

//bet value
int bet;

//red, black or green
char color;
};


//Defining a casino player
struct Player
{
//player's name
char name[32];

//player's balance
int balance;

//player's game status
int gameOver;

//All numbers in the game
struct Number numbers[38];

//amount bet on hi
int betHi;

//amount bet on lo
int betLo;

//amount bet on red
int betRed;

//amount bet on black
int betBlack;

//amount bet on even
int betEven;

//amount bet on odd
int betOdd;

};


//initialize variables
void InitNumbers(struct Player * somePlayer)
{
//temporary counter;
int counter;

//set the first number to -1. This actually represents 00
somePlayer->numbers[0].value = -1;
somePlayer->numbers[0].color = 'g';
somePlayer->numbers[0].bet = 0;

//loop through the numbers and reset their bets
for (counter = 1; counter<=37; counter++)
{
 //numbers[counter].bet = 250;
 somePlayer->numbers[counter].value = counter;
 somePlayer->numbers[counter].bet = 0;
}

//set the color for each roulette color
somePlayer->numbers[0].color = 'g';
somePlayer->numbers[1].color = 'g';
somePlayer->numbers[2].color = 'r';
somePlayer->numbers[3].color = 'r';
somePlayer->numbers[4].color = 'r';
somePlayer->numbers[5].color = 'b';
somePlayer->numbers[6].color = 'r';
somePlayer->numbers[7].color = 'b';
somePlayer->numbers[8].color = 'r';
somePlayer->numbers[9].color = 'b';
somePlayer->numbers[10].color = 'r';
somePlayer->numbers[11].color = 'b';
somePlayer->numbers[12].color = 'b';
somePlayer->numbers[13].color = 'r';
somePlayer->numbers[14].color = 'b';
somePlayer->numbers[15].color = 'r';
somePlayer->numbers[16].color = 'b';
somePlayer->numbers[17].color = 'r';
somePlayer->numbers[18].color = 'b';
somePlayer->numbers[19].color = 'r';
somePlayer->numbers[20].color = 'r';
somePlayer->numbers[21].color = 'b';
somePlayer->numbers[22].color = 'r';
somePlayer->numbers[23].color = 'b';
somePlayer->numbers[24].color = 'r';
somePlayer->numbers[25].color = 'b';
somePlayer->numbers[26].color = 'r';
somePlayer->numbers[27].color = 'b';
somePlayer->numbers[28].color = 'r';
somePlayer->numbers[29].color = 'b';
somePlayer->numbers[30].color = 'b';
somePlayer->numbers[31].color = 'r';
somePlayer->numbers[32].color = 'b';
somePlayer->numbers[33].color = 'r';
somePlayer->numbers[34].color = 'b';
somePlayer->numbers[35].color = 'r';
somePlayer->numbers[36].color = 'b';
somePlayer->numbers[37].color = 'r';
}


//reset all bets
void ResetPlayerBets(struct Player *newPlayer, int startBalance)
{
//initialize the player's start balance
newPlayer->balance = startBalance;
InitNumbers(newPlayer);
newPlayer->betBlack = 0;
newPlayer->betRed = 0;
newPlayer->betEven = 0;
newPlayer->betHi = 0;
newPlayer->betLo = 0;
newPlayer->betOdd = 0;
newPlayer->betEven = 0;
}


//counts all of a pleyer's bets
int CountPlayerBets(struct Player player)
{
int sum = 0;
int i = 0;

//sum bets for others
sum += player.betHi;
sum += player.betLo;
sum += player.betBlack;
sum += player.betEven;
sum += player.betOdd;

//sum bets for other numbers
for (i = 0; i<=37; i++)
{
 sum += player.numbers[i].bet;
}

//return sum
return sum;
}


//checks whether all players are ga
int IsGameOver(struct Player players[10], int numPlayers)
{
int overCount = 0;
int i = 0;

for (i = 0; i<=numPlayers-1; i++)
{
 if (players[i].gameOver == 1)
 {
     overCount++;
 }
}

return (overCount == numPlayers);
}


//sets all players to game-over
void SetAllGameOver(struct Player * players[10], int numPlayers)
{
int i= 0;

for (i=0; i<=numPlayers-1; i++)
{
 players[i]->gameOver = 1;
}
}


//method to check if a number is red
int IsNumberRed(int number)
{
struct Player tempPlayer;
InitNumbers(&tempPlayer);
if (tempPlayer.numbers[number+1].color == 'r')
{
 return 1;
}
else
{
 return 0;
}
}


//method to check if a number is black
int IsNumberBlack(int number)
{
struct Player tempPlayer;
InitNumbers(&tempPlayer);
if (tempPlayer.numbers[number+1].color == 'b')
{
 return 1;
}
else
{
 return 0;
}
} 


//method to check if a number is even
int IsNumberEven(int number)
{
//check if numbers aren't 00 and 0
if (number > 0)
{
 //check if even
 if ((number % 2) > 0)
 {
     return 0;
 }
 else
 {
     return 1;
 } 
}
else
{
 return 0;
} 
}


//method to check if a number is odd
int IsNumberOdd(int number)
{
//check if numbers aren't 00 and 0
if (number > 0)
{
 //check if odd
 if ((number % 2) > 0)
 {
     return 1;
 }
 else
 {
     return 0;
 } 
}
else
{
 return 0;
} 
}


//method to check if a number is hi
int IsNumberHi(int number)
{
//check if numbers aren't 00 and 0
if (number > 0)
{
 //check if odd
 if (number >= 18)
 {
     return 1;
 }
 else
 {
     return 0;
 } 
}
else
{
 return 0;
}
}    


//method to check if a number is lo
int IsNumberLo(int number)
{
//check if numbers aren't 00 and 0
if (number > 0)
{
 //check if odd
 if (number < 18)
 {
     return 1;
 }
 else
 {
     return 0;
 } 
}
else
{
 return 0;
}
}

//pay the earnings and set each player's game over status
void PayEarnings(struct Player (*allPlayers)[10], int earnings[10], int numPlayers)
{
int i = 0;

for (i = 0; i<=numPlayers-1; i++)
{
 //if the player isn't game over yet
 if ((*allPlayers)[i].gameOver == 0)
 {
     (*allPlayers)[i].balance += earnings[i];

     //set the player's game over status if balance zero or less
     if ((*allPlayers)[i].balance <= 0)
     {
         (*allPlayers)[i].gameOver = 1;
     }
 }
}
}

Please let me know if there are any bugs or corrections to be made!
Cheers,
Rowan

# posted by Bebert @ Thursday, November 01, 2007

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Thursday, November 01, 2007

Roulette Implementation in C