string Dealer::nextMove()
{
string s;
int h_value, a_value;
bool bj;
h_value = handValue(a_value, bj);
// if dealer has a black jack
if (bj)
return "black jack";
// dealers hand burnt
if (h_value > BJ_VALUE) {
cout <<"Dealer's hand burnt!";
return "burnt";
}
if (a_value < target_value) { // dealer's hand is smaller than 17
cout <<"The dealer is taking another card.\n";
return "hit";
}
// dealer's hand is less than target_value=17
if (h_value < target_value && a_value > BJ_VALUE) {
cout <<"The dealer is taking another card.\n";
return "hit";
}
// h_value >= target_value(17)
cout <<"The dealer is done taking cards.\n";
return "stand";
}
int Participant::validHighHand()
{
int h_val, a_val;
bool bj;
h_val = handValue(a_val, bj);
if (h_val > BJ_VALUE)
return 0; // burnt hand
else if (a_val > BJ_VALUE)
return h_val;
return a_val > h_val ? a_val : h_val;
}
bool Participant::examineState(int& h_val, bool face_up)
{
int a_val;
bool bj;
// calculate the hand value
h_val = handValue(a_val, bj);
// print the hand of the participant
if (hand.size() == 2) {
(face_up) ? hand[0].printFaceUp() : hand[0].printFaceDown();
cout << " ";
hand[1].printFaceUp();
cout << " ***** \n";
if (bj && face_up) {
cout << "You have a Black Jack!!!\n";
cout << "**************************\n";
return true;
}
}
else {
for (int i=0; i<hand.size(); i++) {
hand[i].printFaceUp();
cout << " ";
}
}
if (face_up) {
// print the hand value
if (a_val != h_val){
cout << "Hand value can be counted as: " << h_val <<" or "<<a_val << ".\n";
cout << "**************************\n";
}
else {
cout << "Hand value is: " <<h_val<<".\n";
cout << "**************************\n";
}
}
return false;
}
int main (int argc, char *argv[])
{
int numClients = argc - 1;
fd_set readfds, activefds, tempfds;
char buffer[BUFFSIZE];
struct hand *myHand = NULL;
struct hand *temp;
struct client clients[numClients];
struct timeval timeout;
int clientsPlaying = 0;
int numRead;
int i;
resetDeck();
//have the dealer get its first 2 cards
myHand = initCard();
myHand->next = initCard();
//have the clients get their first 2 cards
for (i = 0; i < numClients; i++)
{
clients[i].hand = initCard();
clients[i].hand->next = initCard();
}
//initialize the active client list
FD_ZERO (&activefds);
FD_ZERO (&tempfds);
for (i = 1; i < argc; i++)
{
int socket = atoi(argv[i]);
FD_SET (socket, &activefds);
clients[clientsPlaying].socket = socket;
clients[clientsPlaying].countdown = 10;
clients[clientsPlaying].finished = 0;
//send the initial cards to the client
temp = clients[clientsPlaying].hand;
strcpy(buffer, temp->card);
strcat(buffer, temp->next->card);
strcat(buffer, myHand->card);
if (write(socket, buffer, sizeof(buffer)) < 0)
{
fprintf(stderr, "ERROR contacting client.\n");
FD_CLR(socket, &activefds);
}
clientsPlaying++;
}
while (clientsPlaying > 0)
{
fflush(stderr);
//disconnect any clients who have timed out
for (i = 0; i < numClients; i++)
{
if ((clients[i].countdown < 1) && (clients[i].finished == 0))
{
fprintf(stderr, "A client has timed out.\n");
FD_CLR(clients[i].socket, &activefds);
close(clients[i].socket);
clients[i].finished = 1;
clientsPlaying--;
}
}
readfds = activefds;
timeout.tv_sec = 1;
timeout.tv_usec = 0;
numRead = select(FD_SETSIZE, &readfds, NULL, NULL, &timeout);
if (numRead < 0)
{
fprintf(stderr, "ERROR with select %d\n", errno);
continue;
}
//keep track of the inactivity for each client
if (numRead == 0)
{
fprintf(stderr, ".");
for (i = 0; i < numClients; i++)
if (clients[i].finished == 0)
clients[i].countdown--;
continue;
}
//check for the client input
for (i = 0; i < numClients; i++)
{
if (FD_ISSET (clients[i].socket, &readfds) && (clients[i].finished == 0))
{
if (read(clients[i].socket, buffer, sizeof(buffer)) < 0)
{
fprintf(stderr, "ERROR reading the client's message.\n");
continue;
}
//give the player another card
if (strcasecmp(buffer, "HIT") == 0)
{
clients[i].countdown = 10;
struct hand *last = clients[i].hand;
while (last->next != NULL)
last = last->next;
last->next = initCard();
write(clients[i].socket, last->next->card, sizeof(last->next->card));
//check to see if the client bust
if (handValue(clients[i].hand) > 21)
{
fprintf(stderr, "A client has bust.\n");
FD_CLR(clients[i].socket, &activefds);
close(clients[i].socket);
clients[i].finished = 1;
clientsPlaying--;
}
}
else if (strcasecmp(buffer, "STAND") == 0)
{
//remove the client from ongoing gameplay
fprintf(stderr, "A client has chosen to stand.\n");
clients[i].finished = 1;
FD_CLR(clients[i].socket, &activefds);
FD_SET(clients[i].socket, &tempfds);
clientsPlaying--;
}
}
}
}
activefds = tempfds;
//calculate the rest of the dealer's hand, first check for soft 17
if ((getValue(myHand->card) == 1 || getValue(myHand->next->card) == 1) && dealerValue(myHand) == 17)
myHand->next->next = initCard();
//keep hitting until 17 or higher
while (dealerValue(myHand) < 17)
{
struct hand *last = myHand;
while (last->next != NULL)
last = last->next;
last->next = initCard();
}
//output the rest of the dealers hand to the buffer
temp = myHand->next;
strcpy(buffer, temp->card);
temp = temp->next;
while (temp != NULL)
{
strcat(buffer, temp->card);
temp = temp->next;
}
//send the rest of the dealers hand to the clients
for (i = 0; i < numClients; i++)
{
if (FD_ISSET (clients[i].socket, &activefds))
{
write(clients[i].socket, buffer, sizeof(buffer));
close(clients[i].socket);
}
}
return EXIT_SUCCESS;
}
