void NET_SendFrags(player_t *player)
{
int i;
int frags;
netbuffer->checksum = NetbufferChecksum();
if (demoplayback)
{
return;
}
if (!netgame)
{
I_Error ("Tried to transmit to another node");
}
frags = 0;
for(i = 0; i < MAXPLAYERS; i++)
{
frags += player->frags[i];
}
doomcom->command = CMD_FRAG;
doomcom->remotenode = frags;
doomcom->datalength = NetbufferSize ();
I_NetCmd ();
}
boolean HGetPacket (void)
{
if (reboundpacket)
{
*netbuffer = reboundstore;
doomcom->remotenode = 0;
reboundpacket = false;
return true;
}
if (!netgame)
return false;
if (demoplayback)
return false;
doomcom->command = CMD_GET;
I_NetCmd ();
if (doomcom->remotenode == -1)
return false;
if (doomcom->datalength != NetbufferSize ())
{
if (debugfile)
fprintf (debugfile,"bad packet length %i\n",doomcom->datalength);
return false;
}
if (NetbufferChecksum () != (netbuffer->checksum&NCMD_CHECKSUM) )
{
if (debugfile)
fprintf (debugfile,"bad packet checksum\n");
return false;
}
if (debugfile)
{
int realretrans;
int i;
if (netbuffer->checksum & NCMD_SETUP)
fprintf (debugfile,"setup packet\n");
else
{
if (netbuffer->checksum & NCMD_RETRANSMIT)
realretrans = ExpandTics (netbuffer->retransmitfrom);
else
realretrans = -1;
fprintf (debugfile,"get %i = (%i + %i, R %i)[%i] ",doomcom->remotenode,
ExpandTics(netbuffer->starttic),netbuffer->numtics, realretrans, doomcom->datalength);
for (i=0 ; i<doomcom->datalength ; i++)
fprintf (debugfile,"%i ",((byte *)netbuffer)[i]);
fprintf (debugfile,"\n");
}
}
return true;
}
//
// HSendPacket
//
void
HSendPacket
(int node,
int flags )
{
netbuffer->checksum = NetbufferChecksum () | flags;
if (!node)
{
reboundstore = *netbuffer;
reboundpacket = true;
return;
}
if (demoplayback)
return;
if (!netgame)
I_Error ("Tried to transmit to another node");
doomcom->command = CMD_SEND;
doomcom->remotenode = node;
doomcom->datalength = NetbufferSize ();
#if 0 // AJH HACK
if (debugfile)
{
int i;
int realretrans;
if (netbuffer->checksum & NCMD_RETRANSMIT)
realretrans = ExpandTics (netbuffer->retransmitfrom);
else
realretrans = -1;
I_DBGprintf("send (%i + %i, R %i) [%i] ",
ExpandTics(netbuffer->starttic),
netbuffer->numtics, realretrans, doomcom->datalength);
for (i=0 ; i<doomcom->datalength ; i++)
I_DBGprintf("%i ",((byte *)netbuffer)[i]);
I_DBGprintf("\n");
}
#endif
I_NetCmd ();
}
//
// HGetPacket
// Returns false if no packet is waiting
// Check Datalength and checksum
//
boolean HGetPacket(void)
{
// get a packet from self
if (rebound_tail != rebound_head)
{
M_Memcpy(netbuffer, &reboundstore[rebound_tail], reboundsize[rebound_tail]);
doomcom->datalength = reboundsize[rebound_tail];
if (netbuffer->packettype == PT_NODETIMEOUT)
doomcom->remotenode = netbuffer->u.textcmd[0];
else
doomcom->remotenode = 0;
rebound_tail = (rebound_tail+1) % MAXREBOUND;
#ifdef DEBUGFILE
if (debugfile)
DebugPrintpacket("GETLOCAL");
#endif
return true;
}
if (!netgame)
return false;
#ifndef NONET
while(true)
{
I_NetGet();
if (doomcom->remotenode == -1)
return false;
getbytes += packetheaderlength + doomcom->datalength; // for stat
if (doomcom->remotenode >= MAXNETNODES)
{
DEBFILE(va("receive packet from node %d !\n", doomcom->remotenode));
continue;
}
nodes[doomcom->remotenode].lasttimepacketreceived = I_GetTime();
if (netbuffer->checksum != NetbufferChecksum())
{
DEBFILE("Bad packet checksum\n");
Net_CloseConnection(doomcom->remotenode);
continue;
}
#ifdef DEBUGFILE
if (debugfile)
DebugPrintpacket("GET");
#endif
// proceed the ack and ackreturn field
if (!Processackpak())
continue; // discarded (duplicated)
// a packet with just ackreturn
if (netbuffer->packettype == PT_NOTHING)
{
GotAcks();
continue;
}
break;
}
#endif // ndef NONET
return true;
}
//
// HSendPacket
//
boolean HSendPacket(INT32 node, boolean reliable, UINT8 acknum, size_t packetlength)
{
doomcom->datalength = (INT16)(packetlength + BASEPACKETSIZE);
if (node == 0) // packet is to go back to us
{
if ((rebound_head+1) % MAXREBOUND == rebound_tail)
{
#ifdef PARANOIA
CONS_Debug(DBG_NETPLAY, "No more rebound buf\n");
#endif
return false;
}
M_Memcpy(&reboundstore[rebound_head], netbuffer,
doomcom->datalength);
reboundsize[rebound_head] = doomcom->datalength;
rebound_head = (rebound_head+1) % MAXREBOUND;
#ifdef DEBUGFILE
if (debugfile)
{
doomcom->remotenode = (INT16)node;
DebugPrintpacket("SENDLOCAL");
}
#endif
return true;
}
if (!netgame)
I_Error("Tried to transmit to another node");
#ifdef NONET
(void)node;
(void)reliable;
(void)acknum;
#else
// do this before GetFreeAcknum because this function backup
// the current packet
doomcom->remotenode = (INT16)node;
if (doomcom->datalength <= 0)
{
DEBFILE("HSendPacket: nothing to send\n");
#ifdef DEBUGFILE
if (debugfile)
DebugPrintpacket("TRISEND");
#endif
return false;
}
if (node < MAXNETNODES) // can be a broadcast
netbuffer->ackreturn = GetAcktosend(node);
else
netbuffer->ackreturn = 0;
if (reliable)
{
if (I_NetCanSend && !I_NetCanSend())
{
if (netbuffer->packettype < PT_CANFAIL)
GetFreeAcknum(&netbuffer->ack, true);
DEBFILE("HSendPacket: Out of bandwidth\n");
return false;
}
else if (!GetFreeAcknum(&netbuffer->ack, false))
return false;
}
else
netbuffer->ack = acknum;
netbuffer->checksum = NetbufferChecksum();
sendbytes += packetheaderlength + doomcom->datalength; // for stat
// simulate internet :)
if (true || rand()<(INT32)RAND_MAX/5)
{
#ifdef DEBUGFILE
if (debugfile)
DebugPrintpacket("SEND");
#endif
I_NetSend();
}
#ifdef DEBUGFILE
else if (debugfile)
DebugPrintpacket("NOTSEND");
#endif
#endif // ndef NONET
return true;
}
void udp_receive(int s) {
size_t len = 1024;
packet_header_t *p = malloc(len);
int rc;
rc = read(s,p,len);
if (rc < 0) {
fprintf(stderr,"read(udp): %s\n", strerror(errno));
exit(-2);
}
if (rc > 0) {
switch (p->type) {
case PKT_SETUP:
{
struct setup_packet_s *sinfo = (void*)(p+1);
consoleplayer = sinfo->yourplayer;
send_udp_packet(PKT_GO,0,NULL,0);
write(ipxs,"\xff\xff\xff\xff\x00\x00\x00\x00\x02\x00\x02\x00\x00\x00\x00\x00",16);
}
break;
case PKT_GO:
{
ipxpacket_t pkt;
memset(&pkt,0,sizeof(pkt));
pkt.tic = ipxcounter++;
pkt.u.d.player = consoleplayer^1;
pkt.u.d.starttic = 0;
pkt.u.d.numtics = 0;
pkt.u.d.retransmitfrom = 0;
pkt.u.d.checksum = NetbufferChecksum(&pkt.u.d.retransmitfrom, 4);
write(ipxs,&pkt,16);
}
break;
case PKT_TICS:
{
ipxpacket_t pkt;
int tic = doom_ntohl(p->tic);
byte *pp = (void*)(p+1);
int tics = *pp++;
memset(&pkt,0,sizeof(pkt));
size_t len;
pkt.tic = ipxcounter++;
pkt.u.d.starttic = tic;
pkt.u.d.player = (consoleplayer == 0 ? 1 : 0);
pkt.u.d.numtics = tics;
for (int t=0; t<tics; t++) {
int players = *pp++;
for (int i=0; i<players; i++) {
if (*pp++ == pkt.u.d.player)
RawToTic(&pkt.u.d.cmds[t],pp);
pp += sizeof(ticcmd_t);
}
}
pkt.u.d.retransmitfrom = 0;
len = 12+tics*sizeof(ticcmd_t);
len = (len+7)&0xff8; // round up to next 16
pkt.u.d.checksum = NetbufferChecksum(&pkt.u.d.retransmitfrom, len-8);
write(ipxs,&pkt,len);
}
}
}
}
