void disconnectPlayer(int p)
{
int socket = connection[p].socket;
connection[p].echo = 0;
playerLeave(p);
close(connection[p].socket);
FD_CLR(connection[p].socket, &master);
connection[p].socket = 0;
connection[p].bot = 0;
printf("socket %d closed\n", socket);
}
void stepNetwork(void)
{
int i, k, pi, pi2, nbytes, newfd;
char remoteIP[INET6_ADDRSTRLEN];
struct sockaddr_storage remoteaddr;
socklen_t addrlen;
struct timeval tv;
if(getDeathMessage(sendbuf))
{
for(k = 0; k < conf.maxPlayers; ++k)
{
if(connection[k].socket && !connection[k].bot)
{
snd(connection[k].socket, "\r\n");
snd(connection[k].socket, sendbuf);
snd(connection[k].socket, "\r\n> ");
}
}
}
tv.tv_sec = 0;
tv.tv_usec = 1;
readfds = master;
if(select(fdmax + 1, &readfds, NULL, NULL, &tv) == -1)
{
print_error("select");
exit(5);
}
for(i = 0; i <= fdmax; ++i)
{
if(FD_ISSET(i, &readfds))
{
if(i == listener)
{
addrlen = sizeof remoteaddr;
newfd = accept(listener, (struct sockaddr *)&remoteaddr, &addrlen);
if(newfd == -1)
{
print_error("accept");
}
else
{
getnameinfo((struct sockaddr *)&remoteaddr, addrlen, remoteIP, sizeof remoteIP, NULL, 0, NI_NUMERICHOST | NI_NUMERICSERV);
for(k = 0; k < conf.maxPlayers; ++k)
{
if(connection[k].socket == 0)
{
connection[k].socket = newfd;
strncpy(connection[k].remoteIP,remoteIP,INET6_ADDRSTRLEN);
playerJoin(k);
updateName(k, "Anonymous");
allSendPlayerPos(k);
break;
}
}
if(k == conf.maxPlayers)
{
close(newfd);
printf("new connection from %s on socket %d refused: max connections\n", remoteIP, newfd);
}
else
{
FD_SET(newfd, &master);
if(newfd > fdmax)
{
fdmax = newfd;
}
printf("new connection from %s on socket %d accepted\n", remoteIP, newfd);
snd(newfd, WELCOME);
}
}
}
else
{
if((nbytes = recv(i, buf, sizeof buf, 0)) <= 0)
{
if(nbytes == 0)
{
printf("socket %d hung up\n", i);
}
else
{
print_error("recv");
}
for(k = 0; k < conf.maxPlayers; ++k)
{
if(connection[k].socket == i)
{
connection[k].socket = 0;
connection[k].echo = 0;
connection[k].bot = 0;
playerLeave(k);
allSendPlayerLeave(k);
break;
}
}
close(i);
FD_CLR(i, &master);
}
else
{
pi = -1;
for(k = 0; k < conf.maxPlayers; ++k)
{
if(connection[k].socket == i)
{
pi = k;
break;
}
}
for(k = 0; k < nbytes && pi >= 0; ++k)
{
unsigned char c = buf[k];
if(c != '\r' && c != '\n')
{
if(isprint(c) && connection[pi].msgbufindex < 128 - 2)
{
connection[pi].msgbuf[connection[pi].msgbufindex++] = c;
}
}
else
{
if(connection[pi].msgbufindex == 0)
{
continue;
}
connection[pi].msgbuf[connection[pi].msgbufindex] = '\0';
connection[pi].msgbuf[connection[pi].msgbufindex + 1] = '\0';
connection[pi].msgbufindex = 0;
if(connection[pi].echo)
{
snd(i, connection[pi].msgbuf);
snd(i, "\r\n");
}
if(!overdrive)printf("%16s (%d): \"%s\"\n", getPlayer(pi)->name, pi, connection[pi].msgbuf);
switch(connection[pi].msgbuf[0])
{
case 'n':
{
updateName(pi, connection[pi].msgbuf + 2);
break;
}
case 't':
{
if(is_from_localhost(connection[pi])) {
tankEnergy(atoi(connection[pi].msgbuf + 2));
}
break;
}
case 'v':
{
updateVelocity(pi, atof(connection[pi].msgbuf + 2));
break;
}
case 'w':
{
toggleWatch(pi);
break;
}
case 'z':
{
updateZoom(atof(connection[pi].msgbuf + 2));
break;
}
case 'T':
{
if(is_from_localhost(connection[pi])) {
double throttle = atof(connection[pi].msgbuf + 2);
conf.throttle.tv_sec= throttle;
conf.throttle.tv_nsec=(throttle - conf.throttle.tv_sec) * 1000000000;
}
break;
}
case 'D':
{
if(is_from_localhost(connection[pi])) {
conf.debug = atoi(connection[pi].msgbuf + 2);
}
break;
}
case 'c':
{
clearTraces(pi);
break;
}
case 'o':
{
if(is_from_localhost(connection[pi])) {
overdrive = !overdrive;
}
break;
}
case 'b':
{
connection[pi].bot = !connection[pi].bot;
if(connection[pi].bot)
{
sendOwnId(i, pi);
for(pi2 = 0; pi2 < conf.maxPlayers; ++pi2)
{
if(connection[pi2].socket)
{
sendPlayerPos(i, pi2);
}
}
}
break;
}
case 'f':
{
toggleFps();
break;
}
case 'i':
{
if(strcmp("init", connection[pi].msgbuf) == 0)
{
reinitialize();
}
break;
}
case 'x':
{
if(strcmp("xit", connection[pi].msgbuf) == 0)
{
exit(0);
}
break;
}
case 'e':
{
connection[pi].echo = !connection[pi].echo;
break;
}
case 'r':
{
validateOld(pi);
break;
}
default:
{
updateAngle(pi, atof(connection[pi].msgbuf));
break;
}
}
if(!connection[pi].bot)
{
snd(i, "> ");
}
}
}
}
}
}
}
for(k = 0; k < conf.maxPlayers; ++k)
{
if(getPlayer(k)->active && getPlayer(k)->timeoutcnt > 2)
{
connection[k].echo = 0;
playerLeave(k);
close(connection[k].socket);
FD_CLR(connection[k].socket, &master);
connection[k].socket = 0;
connection[k].bot = 0;
allSendPlayerLeave(k);
}
}
}