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Merge branch 'fix-input-buffer' into 'next'

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Allow input buffer to hold more than 64 tics

See merge request STJr/SRB2!950
This commit is contained in:
SteelT 2020-05-28 11:27:39 -04:00
commit 1c42102ddb
3 changed files with 23 additions and 21 deletions
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33
src/d_clisrv.c
View file

@ -195,24 +195,25 @@ static inline void *G_ScpyTiccmd(ticcmd_t* dest, void* src, const size_t n)
// of 512 bytes is like 0.1)
UINT16 software_MAXPACKETLENGTH;
/** Guesses the value of a tic from its lowest byte and from maketic
/** Guesses the full value of a tic from its lowest byte, for a specific node
*
* \param low The lowest byte of the tic value
* \param node The node to deduce the tic for
* \return The full tic value
*
*/
tic_t ExpandTics(INT32 low)
tic_t ExpandTics(INT32 low, INT32 node)
{
INT32 delta;
delta = low - (maketic & UINT8_MAX);
delta = low - (nettics[node] & UINT8_MAX);
if (delta >= -64 && delta <= 64)
return (maketic & ~UINT8_MAX) + low;
return (nettics[node] & ~UINT8_MAX) + low;
else if (delta > 64)
return (maketic & ~UINT8_MAX) - 256 + low;
return (nettics[node] & ~UINT8_MAX) - 256 + low;
else //if (delta < -64)
return (maketic & ~UINT8_MAX) + 256 + low;
return (nettics[node] & ~UINT8_MAX) + 256 + low;
}
// -----------------------------------------------------------------
@ -3999,8 +4000,8 @@ static void HandlePacketFromPlayer(SINT8 node)
// To save bytes, only the low byte of tic numbers are sent
// Use ExpandTics to figure out what the rest of the bytes are
realstart = ExpandTics(netbuffer->u.clientpak.client_tic);
realend = ExpandTics(netbuffer->u.clientpak.resendfrom);
realstart = ExpandTics(netbuffer->u.clientpak.client_tic, node);
realend = ExpandTics(netbuffer->u.clientpak.resendfrom, node);
if (netbuffer->packettype == PT_CLIENTMIS || netbuffer->packettype == PT_CLIENT2MIS
|| netbuffer->packettype == PT_NODEKEEPALIVEMIS
@ -4252,15 +4253,15 @@ static void HandlePacketFromPlayer(SINT8 node)
break;
}
realstart = ExpandTics(netbuffer->u.serverpak.starttic);
realstart = netbuffer->u.serverpak.starttic;
realend = realstart + netbuffer->u.serverpak.numtics;
if (!txtpak)
txtpak = (UINT8 *)&netbuffer->u.serverpak.cmds[netbuffer->u.serverpak.numslots
* netbuffer->u.serverpak.numtics];
if (realend > gametic + BACKUPTICS)
realend = gametic + BACKUPTICS;
if (realend > gametic + CLIENTBACKUPTICS)
realend = gametic + CLIENTBACKUPTICS;
cl_packetmissed = realstart > neededtic;
if (realstart <= neededtic && realend > neededtic)
@ -4603,11 +4604,11 @@ static void SV_SendTics(void)
for (n = 1; n < MAXNETNODES; n++)
if (nodeingame[n])
{
lasttictosend = maketic;
// assert supposedtics[n]>=nettics[n]
realfirsttic = supposedtics[n];
if (realfirsttic >= maketic)
lasttictosend = min(maketic, realfirsttic + CLIENTBACKUPTICS);
if (realfirsttic >= lasttictosend)
{
// well we have sent all tics we will so use extrabandwidth
// to resent packet that are supposed lost (this is necessary since lost
@ -4616,7 +4617,7 @@ static void SV_SendTics(void)
DEBFILE(va("Nothing to send node %u mak=%u sup=%u net=%u \n",
n, maketic, supposedtics[n], nettics[n]));
realfirsttic = nettics[n];
if (realfirsttic >= maketic || (I_GetTime() + n)&3)
if (realfirsttic >= lasttictosend || (I_GetTime() + n)&3)
// all tic are ok
continue;
DEBFILE(va("Sent %d anyway\n", realfirsttic));
@ -4659,7 +4660,7 @@ static void SV_SendTics(void)
// Send the tics
netbuffer->packettype = PT_SERVERTICS;
netbuffer->u.serverpak.starttic = (UINT8)realfirsttic;
netbuffer->u.serverpak.starttic = realfirsttic;
netbuffer->u.serverpak.numtics = (UINT8)(lasttictosend - realfirsttic);
netbuffer->u.serverpak.numslots = (UINT8)SHORT(doomcom->numslots);
bufpos = (UINT8 *)&netbuffer->u.serverpak.cmds;

5
src/d_clisrv.h
View file

@ -34,6 +34,7 @@ applications may follow different packet versions.
// Networking and tick handling related.
#define BACKUPTICS 96
#define CLIENTBACKUPTICS 32
#define MAXTEXTCMD 256
//
// Packet structure
@ -128,7 +129,7 @@ typedef struct
// this packet is too large
typedef struct
{
UINT8 starttic;
tic_t starttic;
UINT8 numtics;
UINT8 numslots; // "Slots filled": Highest player number in use plus one.
ticcmd_t cmds[45]; // Normally [BACKUPTIC][MAXPLAYERS] but too large
@ -520,7 +521,7 @@ extern consvar_t cv_resynchattempts, cv_blamecfail;
extern consvar_t cv_maxsend, cv_noticedownload, cv_downloadspeed;
// Used in d_net, the only dependence
tic_t ExpandTics(INT32 low);
tic_t ExpandTics(INT32 low, INT32 node);
void D_ClientServerInit(void);
// Initialise the other field

6
src/d_net.c
View file

@ -838,7 +838,7 @@ static void DebugPrintpacket(const char *header)
size_t ntxtcmd = &((UINT8 *)netbuffer)[doomcom->datalength] - cmd;
fprintf(debugfile, " firsttic %u ply %d tics %d ntxtcmd %s\n ",
(UINT32)ExpandTics(serverpak->starttic), serverpak->numslots, serverpak->numtics, sizeu1(ntxtcmd));
(UINT32)serverpak->starttic, serverpak->numslots, serverpak->numtics, sizeu1(ntxtcmd));
/// \todo Display more readable information about net commands
fprintfstringnewline((char *)cmd, ntxtcmd);
/*fprintfstring((char *)cmd, 3);
@ -857,8 +857,8 @@ static void DebugPrintpacket(const char *header)
case PT_NODEKEEPALIVE:
case PT_NODEKEEPALIVEMIS:
fprintf(debugfile, " tic %4u resendfrom %u\n",
(UINT32)ExpandTics(netbuffer->u.clientpak.client_tic),
(UINT32)ExpandTics (netbuffer->u.clientpak.resendfrom));
(UINT32)ExpandTics(netbuffer->u.clientpak.client_tic, doomcom->remotenode),
(UINT32)ExpandTics (netbuffer->u.clientpak.resendfrom, doomcom->remotenode));
break;
case PT_TEXTCMD:
case PT_TEXTCMD2: