/* Read the next column number, and check for legality
*/
int
get_move(c4_t board) {
int c;
/* check that a move is possible */
if (!move_possible(board)) {
return EOF;
}
/* one is, so ask for user input */
printf("Enter column number: ");
if (scanf("%d", &c) != 1) {
return EOF;
}
/* and keep asking until a valid move is entered */
while ((c<=0) || (c>WIDTH) || (board[HEIGHT-1][c-1]!=EMPTY)) {
printf("That move is not possible. ");
printf("Enter column number: ");
if (scanf("%d", &c) != 1) {
return EOF;
}
}
/* now have a valid move */
return c;
}
void *thread_game(void *threadInfo)
{
struct readThreadParams *thisTheadInfo = (struct readThreadParams *)threadInfo;
FILE *fptr = thisTheadInfo->filep;
int sock = thisTheadInfo->sock;
int status,n;
//connect 4 variables
c4_t board;
int clientMove, serverMove;
//uint16 used so all systems can play!
uint16_t clientMoveNewtorked, serverMoveNetworked;
printLog(fptr,thisTheadInfo,"client connected" ,-1,CLIENT);
//connect 4 actions here
srand(RSEED);
//create a new board
init_empty(board);
/* main loop does two moves each iteration, one from the human
* playing, and then one from the computer program (or game server)
*/
while (1) {
//first we want the clients move
if( (n = recv(sock, &clientMove, sizeof(uint16_t), 0)) != sizeof(uint16_t) )
{
printf("socket closed\n");
status = STATUS_ABNORMAL;
printLog(fptr, thisTheadInfo, "game over, code",status,CLIENT);
break;
}
clientMoveNewtorked = htons(clientMove);
//do move
if (do_move(board, (int)clientMoveNewtorked, YELLOW)!=1) {
printf("Panic\n");
status = STATUS_ABNORMAL;
printLog(fptr, thisTheadInfo, "game over, code",status,CLIENT);
break;
}
//if move possible we write to log
printLog(fptr, thisTheadInfo, "client's move", (int)clientMoveNewtorked,CLIENT);
// print_config(board);
if (winner_found(board) == YELLOW) {
/* rats, the person beat us! */
printf("Petty human wins\n");
status = STATUS_USER_WON;
printLog(fptr, thisTheadInfo, "game over, code",status,CLIENT);
break;
}
/* was that the last possible move? */
if (!move_possible(board)) {
/* yes, looks like it was */
printf("An honourable draw\n");
status = STATUS_DRAW;
printLog(fptr, thisTheadInfo, "game over, code",status,CLIENT);
break;
}
/* otherwise, look for a move from the computer */
serverMove = suggest_move(board, RED);
serverMoveNetworked = htons(serverMove);
/* then play the move */
// printf(" I play in column %d\n", serverMove);
if(send(sock, &serverMoveNetworked,sizeof(uint16_t),0) != sizeof(uint16_t))
{
printf("error\n");
status = STATUS_ABNORMAL;
printLog(fptr, thisTheadInfo, "game over, code",status,CLIENT);
break;
}
if (do_move(board, serverMove, RED)!=1) {
printf("Panic\n");
status = STATUS_ABNORMAL;
printLog(fptr, thisTheadInfo, "game over, code",status,CLIENT);
break;
}
printLog(fptr, thisTheadInfo, "server's move", serverMove,SERVER);
// print_config(board);
/* and did we win??? */
if (winner_found(board) == RED) {
/* yes!!! */
printf("Server wins again!\n");
status = STATUS_AI_WON;
printLog(fptr, thisTheadInfo, "game over, code",status,CLIENT);
break;
}
/* otherwise, the game goes on */
}
return NULL;
}
/*------------------------- Main ---------------------*/
int main(int argc, char *argv[]) {
/* Ensure enough arguments are passed */
if(argc < 3) {
fprintf(stderr, "Usage: %s host port.\n", argv[0]);
exit(EXIT_FAILURE);
}
/* Initialize a socket to communicate to the server */
int socket_fd = initialize_client_socket(argv[1], atoi(argv[2]));
/* Begin the connect4 game against the server. */
/* The data structures required for this game */
c4_t board;
int move, n;
init_empty(board);
print_config(board);
/* This loop does 2 moves each iteration. One for the
* human player and one for the server.
*/
while ((move = get_move(board)) != EOF) {
/* process the person's move */
if (do_move(board, move, YELLOW)!=1) {
printf("Panic\n");
break;
}
/* Send the move to the server */
int converted_move = htonl(move);
n = write(socket_fd, &converted_move, sizeof(converted_move));
if(n < 0) {
perror("Failed to write to socket.\n");
break;
}
print_config(board);
/* and did they win??? */
if (winner_found(board) == YELLOW) {
/* rats, the person beat us! */
printf("Ok, you beat me, beginner's luck!\n");
break;
}
/* was that the last possible move? */
if (!move_possible(board)) {
/* yes, looks like it was */
printf("An honourable draw\n");
break;
}
/* Ask the server for its move */
n = read(socket_fd, &move, sizeof(move));
move = ntohl(move);
if(n < 0) {
perror("Failed to read from socket.\n");
break;
}
/* pretend to be thinking hard */
printf("Ok, let's see now....");
sleep(1);
/* then play the move */
printf(" I play in column %d\n", move);
if (do_move(board, move, RED)!=1) {
printf("Panic\n");
break;
}
print_config(board);
/* and did we win??? */
if (winner_found(board) == RED) {
/* yes!!! */
printf("I guess I have your measure!\n");
break;
}
/* and did they win??? */
if (winner_found(board) == YELLOW) {
/* rats, the person beat us! */
printf("Ok, you beat me, beginner's luck!\n");
break;
}
/* Was that the last possible move? */
if (!move_possible(board)) {
/* yes, looks like it was */
printf("An honourable draw\n");
break;
}
/* otherwise, the game goes on */
}
printf("FINALMOVE=%d", move);
printf("\n");
close(socket_fd);
return 0;
}
