diff options
Diffstat (limited to 'src/heretic/oldd_net.c')
-rw-r--r-- | src/heretic/oldd_net.c | 790 |
1 files changed, 0 insertions, 790 deletions
diff --git a/src/heretic/oldd_net.c b/src/heretic/oldd_net.c deleted file mode 100644 index c4dd1bf9..00000000 --- a/src/heretic/oldd_net.c +++ /dev/null @@ -1,790 +0,0 @@ -// I_pcnet.m - -#include "DoomDef.h" - -#define NCMD_EXIT 0x80000000 -#define NCMD_RETRANSMIT 0x40000000 -#define NCMD_SETUP 0x20000000 -#define NCMD_CHECKSUM 0x0fffffff - -/* -if more space needs to be crunched out of the protocol... - -1 drone -2 player -8 tic -5 numtics - -#define NCMD_EXIT 0x80000000 -#define NCMD_RETRANSMIT 0x40000000 // a retransmit will have 0 tics -#define NCMD_DRONE 0x20000000 -#define NCMD_PLAYER 0x18000000 -#define NCMD_PLAYERSHIFT 27 -#define NCMD_TIC 0x00ff0000 -#define NCMD_TICSHIFT 16 -#define NCMD_NUMTICS 0x0000ff00 -#define NCMD_NUMTICSSHIFT 8 -#define NCMD_CHECKSUM 0x000000ff - -*/ - - -
-
-
-doomcom_t *doomcom; -doomdata_t *netbuffer; // points inside doomcom - - -/* -============================================================================== - - NETWORKING - -gametic is the tic about to (or currently being) run -maketic is the tick that hasn't had control made for it yet -nettics[] has the maketics for all players - -a gametic cannot be run until nettics[] > gametic for all players - -============================================================================== -*/ - -#define RESENDCOUNT 10 -#define PL_DRONE 0x80 // bit flag in doomdata->player - -ticcmd_t localcmds[BACKUPTICS]; - -ticcmd_t netcmds[MAXPLAYERS][BACKUPTICS]; -int nettics[MAXNETNODES]; -boolean nodeingame[MAXNETNODES]; // set false as nodes leave game -boolean remoteresend[MAXNETNODES]; // set when local needs tics -int resendto[MAXNETNODES]; // set when remote needs tics -int resendcount[MAXNETNODES]; - -int nodeforplayer[MAXPLAYERS]; - -int gametime; -int maketic; -int lastnettic, skiptics; -int ticdup; - -void D_ProcessEvents (void);
-void G_BuildTiccmd (ticcmd_t *cmd);
-void D_DoAdvanceDemo (void); -
-boolean reboundpacket; -doomdata_t reboundstore; - - -int NetbufferSize (void) -{ - return (int)&(((doomdata_t *)0)->cmds[netbuffer->numtics]); -} - -unsigned NetbufferChecksum (void) -{ - unsigned c; - int i,l; - - c = 0x1234567; - -#ifdef NeXT - return 0; // byte order problems -#endif - - l = (NetbufferSize () - (int)&(((doomdata_t *)0)->retransmitfrom))/4; - for (i=0 ; i<l ; i++) - c += ((unsigned *)&netbuffer->retransmitfrom)[i] * (i+1); - - return c & NCMD_CHECKSUM; -} - -int ExpandTics (int low) -{ - int delta; - - delta = low - (maketic&0xff); - - if (delta >= -64 && delta <= 64) - return (maketic&~0xff) + low; - if (delta > 64) - return (maketic&~0xff) - 256 + low; - if (delta < -64) - return (maketic&~0xff) + 256 + low; - - I_Error ("ExpandTics: strange value %i at maketic %i",low,maketic); - return 0; -} - - -//============================================================================ - - -/* -============== -= -= HSendPacket -= -============== -*/ - -void HSendPacket (int node, int flags) -{ - netbuffer->checksum = NetbufferChecksum () | flags; - - if (!node) - { - reboundstore = *netbuffer; - reboundpacket = true; - return; - } - - if (!netgame) - I_Error ("Tried to transmit to another node"); - - doomcom->command = CMD_SEND; - doomcom->remotenode = node; - doomcom->datalength = NetbufferSize (); - -if (debugfile) -{ - int i; - int realretrans; - if (netbuffer->checksum & NCMD_RETRANSMIT) - realretrans = ExpandTics (netbuffer->retransmitfrom); - else - realretrans = -1; - fprintf (debugfile,"send (%i + %i, R %i) [%i] " - ,ExpandTics(netbuffer->starttic),netbuffer->numtics, realretrans, doomcom->datalength); - for (i=0 ; i<doomcom->datalength ; i++) - fprintf (debugfile,"%i ",((byte *)netbuffer)[i]); - fprintf (debugfile,"\n"); -} - - I_NetCmd (); -} - -/* -============== -= -= HGetPacket -= -= Returns false if no packet is waiting -= -============== -*/ - -boolean HGetPacket (void) -{ - if (reboundpacket) - { - *netbuffer = reboundstore; - doomcom->remotenode = 0; - reboundpacket = false; - return true; - } - - if (!netgame) - 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; -} - - -/* -=================== -= -= GetPackets -= -=================== -*/ - -char exitmsg[80]; - -void GetPackets (void) -{ - int netconsole; - int netnode; - int netdrone; - int j; - ticcmd_t *src, *dest; - int dupedstart, dupedend; - int skiptics; - int realstart; - - while (HGetPacket ()) - { - if (netbuffer->checksum & NCMD_SETUP) - continue; // extra setup packet - - netdrone = netbuffer->player & PL_DRONE; - netconsole = netbuffer->player & ~PL_DRONE; - netnode = doomcom->remotenode; - // - // to save bytes, only the low byte of tic numbers are sent - // Figure out what the rest of the bytes are - // - realstart = ExpandTics (netbuffer->starttic); - dupedstart = realstart*doomcom->ticdup; - dupedend = (realstart+netbuffer->numtics)*doomcom->ticdup; - - // - // check for exiting the game - // - if (netbuffer->checksum & NCMD_EXIT) - { - if (!nodeingame[netnode]) - continue; - nodeingame[netnode] = false; - if (!netdrone) - { - playeringame[netconsole] = false; - strcpy (exitmsg, "Player 1 left the game"); - exitmsg[7] += netconsole; - players[consoleplayer].message = exitmsg; - } - continue; - } - - // - // drone packets are just notifications - // - if (netdrone) - { - nettics[netnode] = dupedend; - continue; - } - - nodeforplayer[netconsole] = netnode; - - // - // check for retransmit request - // - if ( resendcount[netnode] <= 0 - && (netbuffer->checksum & NCMD_RETRANSMIT) ) - { - resendto[netnode] = ExpandTics(netbuffer->retransmitfrom); -if (debugfile) -fprintf (debugfile,"retransmit from %i\n", resendto[netnode]); - resendcount[netnode] = RESENDCOUNT; - } - else - resendcount[netnode]--; - - // - // check for out of order / duplicated packet - // - if (dupedend == nettics[netnode]) - continue; - - if (dupedend < nettics[netnode]) - { -if (debugfile) -fprintf (debugfile,"out of order packet (%i + %i)\n" ,realstart,netbuffer->numtics); - continue; - } - - // - // check for a missed packet - // - if (dupedstart > nettics[netnode]) - { - // stop processing until the other system resends the missed tics -if (debugfile) -fprintf (debugfile,"missed tics from %i (%i - %i)\n", netnode, dupedstart, nettics[netnode]); - remoteresend[netnode] = true; - continue; - } - -// -// update command store from the packet -// - remoteresend[netnode] = false; - - skiptics = nettics[netnode]/doomcom->ticdup - realstart; - src = &netbuffer->cmds[skiptics]; - - while (nettics[netnode] < dupedend) - { - for (j=0 ; j<doomcom->ticdup ; j++) - { - dest = &netcmds[netconsole][nettics[netnode]%BACKUPTICS]; - nettics[netnode]++; - *dest = *src; - src->chatchar = 0; - if (src->buttons & BT_SPECIAL) - src->buttons = 0; - } - src++; - } - } -} - -/* -============= -= -= NetUpdate -= -= Builds ticcmds for console player -= sends out a packet -============= -*/ - -void NetUpdate (void) -{ - int nowtime; - int newtics; - int i,j; - int gameticdiv; - int realstart; - - if (singletics) - return; // singletic update is syncronous - -// -// check time -// - nowtime = I_GetTime ()/doomcom->ticdup; - newtics = nowtime - gametime; - gametime = nowtime; - if (newtics <= 0) // nothing new to update - goto listen; - - if (skiptics <= newtics) - { - newtics -= skiptics; - skiptics = 0; - } - else - { - skiptics -= newtics; - newtics = 0; - } - - - netbuffer->player = consoleplayer; - if (doomcom->drone) - netbuffer->player |= PL_DRONE; - -// -// drone packets -// - if (doomcom->drone) - { - I_StartTic (); - D_ProcessEvents (); - goto sendit; - } - -// -// build new ticcmds for console player -// - gameticdiv = (gametic+doomcom->ticdup-1)/doomcom->ticdup; - for (i=0 ; i<newtics ; i++) - { - I_StartTic (); - D_ProcessEvents (); - if (maketic - gameticdiv >= BACKUPTICS/2 /* /doomcom->ticdup */- 1) - { - newtics = i; - break; // can't hold any more - } -//printf ("mk:%i ",maketic); - G_BuildTiccmd (&localcmds[maketic%BACKUPTICS]); - maketic++; - } - -// -// send the packet to the other nodes -// -sendit: - for (i=0 ; i<doomcom->numnodes ; i++) - if (nodeingame[i]) - { - if (doomcom->drone) - { - netbuffer->starttic = realstart = maketic + BACKUPTICS/2; - netbuffer->numtics = 0; - } - else - { - netbuffer->starttic = realstart = resendto[i]; - netbuffer->numtics = maketic - realstart; - resendto[i] = maketic - doomcom->extratics; - } - - if (netbuffer->numtics > BACKUPTICS) - I_Error ("NetUpdate: netbuffer->numtics > BACKUPTICS"); - - for (j=0 ; j< netbuffer->numtics ; j++) - netbuffer->cmds[j] = - localcmds[(realstart+j)%BACKUPTICS]; - - if (remoteresend[i]) - { - netbuffer->retransmitfrom = nettics[i]/doomcom->ticdup; - HSendPacket (i, NCMD_RETRANSMIT); - } - else - { - netbuffer->retransmitfrom = 0; - HSendPacket (i, 0); - } - } - -// -// listen for other packets -// -listen: - - GetPackets (); -} - - -/* -===================== -= -= CheckAbort -= -===================== -*/ - -void CheckAbort (void) -{ - event_t *ev; - - I_WaitVBL(2); - - I_StartTic (); - for ( ; eventtail != eventhead - ; eventtail = (++eventtail)&(MAXEVENTS-1) )
- {
- ev = &events[eventtail];
- if (ev->type == ev_keydown && ev->data1 == KEY_ESCAPE) - I_Error ("Network game synchronization aborted."); - }
-} - -/* -===================== -= -= D_ArbitrateNetStart -= -===================== -*/ - -void D_ArbitrateNetStart (void) -{ - int i; - boolean gotinfo[MAXNETNODES]; - - autostart = true; - memset (gotinfo,0,sizeof(gotinfo)); - - if (doomcom->consoleplayer) - { // listen for setup info from key player - printf ("listening for network start info...\n"); - while (1) - { - CheckAbort (); - if (!HGetPacket ()) - continue; - if (netbuffer->checksum & NCMD_SETUP) - { - if (netbuffer->player != VERSION) - I_Error ("Different DOOM versions cannot play a net game!"); - startskill = netbuffer->retransmitfrom & 15; - deathmatch = (netbuffer->retransmitfrom & 0x80) > 0; - nomonsters = (netbuffer->retransmitfrom & 0x40) > 0; - respawnparm = (netbuffer->retransmitfrom & 0x20) > 0; - startmap = netbuffer->starttic & 15; - startepisode = netbuffer->starttic >> 4; - return; - } - } - } - else - { // key player, send the setup info - printf ("sending network start info...\n"); - do - { - CheckAbort (); - for (i=0 ; i<doomcom->numnodes ; i++) - { - netbuffer->retransmitfrom = startskill; - if (deathmatch) - netbuffer->retransmitfrom |= 0x80; - if (nomonsters) - netbuffer->retransmitfrom |= 0x40; - if (respawnparm) - netbuffer->retransmitfrom |= 0x20; - netbuffer->starttic = startepisode * 16 + startmap; - netbuffer->player = VERSION; - netbuffer->numtics = 0; - HSendPacket (i, NCMD_SETUP); - } - - while (HGetPacket ()) - { - gotinfo[netbuffer->player&0x7f] = true; - } - - for (i=1 ; i<doomcom->numnodes ; i++) - if (!gotinfo[i]) - break; - } while (i < doomcom->numnodes); - } -} - -/* -=================== -= -= D_CheckNetGame -= -= Works out player numbers among the net participants -=================== -*/ - -extern int viewangleoffset; - -void D_CheckNetGame (void) -{ - int i; - - for (i=0 ; i<MAXNETNODES ; i++) - { - nodeingame[i] = false; - nettics[i] = 0; - remoteresend[i] = false; // set when local needs tics - resendto[i] = 0; // which tic to start sending - } - -// I_InitNetwork sets doomcom and netgame - I_InitNetwork (); - if (doomcom->id != DOOMCOM_ID) - I_Error ("Doomcom buffer invalid!"); - netbuffer = &doomcom->data; - consoleplayer = displayplayer = doomcom->consoleplayer; - if (netgame) - D_ArbitrateNetStart (); -printf ("startskill %i deathmatch: %i startmap: %i startepisode: %i\n", startskill, deathmatch, startmap, startepisode); - -// read values out of doomcom - ticdup = doomcom->ticdup; - - for (i=0 ; i<doomcom->numplayers ; i++) - playeringame[i] = true; - for (i=0 ; i<doomcom->numnodes ; i++) - nodeingame[i] = true; - -printf ("player %i of %i (%i nodes)\n", consoleplayer+1, doomcom->numplayers, doomcom->numnodes); - -} - -/* -================== -= -= D_QuitNetGame -= -= Called before quitting to leave a net game without hanging the -= other players -= -================== -*/ - -void D_QuitNetGame (void) -{ - int i, j; - - if (debugfile) - fclose (debugfile); - - if (!netgame || !usergame || consoleplayer == -1) - return; - -// send a bunch of packets for security - netbuffer->player = consoleplayer; - if (doomcom->drone) - netbuffer->player |= PL_DRONE; - netbuffer->numtics = 0; - for (i=0 ; i<4 ; i++) - { - for (j=1 ; j<doomcom->numnodes ; j++) - if (nodeingame[j]) - HSendPacket (j, NCMD_EXIT); - I_WaitVBL (1); - } -} - - - -/* -=============== -= -= TryRunTics -= -=============== -*/ - -int frametics[4], frameon; -int frameskip[4]; -int oldnettics; -extern boolean advancedemo; - -void TryRunTics (void) -{ - int i; - int lowtic, nextlowest; - int entertic; - int static oldentertics; - int realtics, availabletics; - int counts; - int numplaying; - -// -// get real tics -// - entertic = I_GetTime (); - realtics = entertic - oldentertics; - oldentertics = entertic; - -// -// get available tics -// - NetUpdate (); - - lowtic = nextlowest = MAXINT; - numplaying = 0; - for (i=0 ; i<doomcom->numnodes ; i++) - if (nodeingame[i]) - { - numplaying++; - if (nettics[i] < lowtic) - { - nextlowest = lowtic; - lowtic = nettics[i]; - } - else if (nettics[i] < nextlowest) - nextlowest = nettics[i]; - } - availabletics = lowtic - gametic; - - -// -// decide how many tics to run -// - if (realtics < availabletics-1) - counts = realtics+1; - else if (realtics < availabletics) - counts = realtics; - else - counts = availabletics; - if (counts < 1) - counts = 1; - - frameon++; - -if (debugfile) - fprintf (debugfile,"=======real: %i avail: %i game: %i\n",realtics, availabletics,counts); - -//============================================================================= -// -// ideally nettics[0] should be 1 - 3 tics above lowtic -// if we are consistantly slower, speed up time -// drones should never hold up the other players -// - for (i=0 ; i<MAXPLAYERS ; i++) - if (playeringame[i]) - break; - if (consoleplayer == i) - { // the key player does not adapt - } - else - { - if (nettics[0] <= nettics[nodeforplayer[i]]) - { - gametime--; -// printf ("-"); - } - frameskip[frameon&3] = (oldnettics > nettics[nodeforplayer[i]]); - oldnettics = nettics[0]; - if (frameskip[0] && frameskip[1] && frameskip[2] && frameskip[3]) - { - skiptics = 1; -// printf ("+"); - } - } -//============================================================================= - -// -// wait for new tics if needed -// - while (lowtic < gametic + counts) - { - - NetUpdate (); - lowtic = MAXINT; - - for (i=0 ; i<doomcom->numnodes ; i++) - if (nodeingame[i] && nettics[i] < lowtic) - lowtic = nettics[i]; - - if (lowtic < gametic) - I_Error ("TryRunTics: lowtic < gametic"); - - // don't stay in here forever -- give the menu a chance to work - if (I_GetTime () - entertic >= 20) - return; - } - - -// -// run the tics -// - while (counts--) - { - G_Ticker (); - NetUpdate (); // check for new console commands - gametic++; - } -} |