/*
=================
CL_SendCmd
=================
*/
void CL_SendCmd (void)
{
sizebuf_t buf;
byte data[128];
int i;
usercmd_t *cmd, *oldcmd;
usercmd_t nullcmd;
int checksumIndex;
// clear buffer
memset (&buf, 0, sizeof(buf));
// build a command even if not connected
// save this command off for prediction
i = cls.netchan.outgoing_sequence & (CMD_BACKUP-1);
cmd = &cl.cmds[i];
cl.cmd_time[i] = cls.realtime; // for netgraph ping calculation
*cmd = CL_CreateCmd ();
cl.cmd = *cmd;
if (cls.state == ca_disconnected || cls.state == ca_connecting)
return;
if (cls.state == ca_connected)
{
if (cls.netchan.message.cursize || curtime - cls.netchan.last_sent > 1000 )
Netchan_Transmit (&cls.netchan, 0, buf.data);
return;
}
// send a userinfo update if needed
if (userinfo_modified)
{
CL_FixUpGender();
userinfo_modified = false;
MSG_WriteByte (&cls.netchan.message, clc_userinfo);
MSG_WriteString (&cls.netchan.message, Cvar_Userinfo() );
}
SZ_Init (&buf, data, sizeof(data));
// Knightmare- removed this, put ESC-only substitute in keys.c
/*if (cmd->buttons && cl.cinematictime > 0 && !cl.attractloop
&& cls.realtime - cl.cinematictime > 1000)
{ // skip the rest of the cinematic
SCR_FinishCinematic ();
}*/
// begin a client move command
MSG_WriteByte (&buf, clc_move);
// save the position for a checksum byte
checksumIndex = buf.cursize;
MSG_WriteByte (&buf, 0);
// let the server know what the last frame we
// got was, so the next message can be delta compressed
if (cl_nodelta->value || !cl.frame.valid || cls.demowaiting)
MSG_WriteLong (&buf, -1); // no compression
else
MSG_WriteLong (&buf, cl.frame.serverframe);
// send this and the previous cmds in the message, so
// if the last packet was dropped, it can be recovered
i = (cls.netchan.outgoing_sequence-2) & (CMD_BACKUP-1);
cmd = &cl.cmds[i];
memset (&nullcmd, 0, sizeof(nullcmd));
MSG_WriteDeltaUsercmd (&buf, &nullcmd, cmd);
oldcmd = cmd;
i = (cls.netchan.outgoing_sequence-1) & (CMD_BACKUP-1);
cmd = &cl.cmds[i];
MSG_WriteDeltaUsercmd (&buf, oldcmd, cmd);
oldcmd = cmd;
i = (cls.netchan.outgoing_sequence) & (CMD_BACKUP-1);
cmd = &cl.cmds[i];
MSG_WriteDeltaUsercmd (&buf, oldcmd, cmd);
// calculate a checksum over the move commands
buf.data[checksumIndex] = COM_BlockSequenceCRCByte(
buf.data + checksumIndex + 1, buf.cursize - checksumIndex - 1,
cls.netchan.outgoing_sequence);
//
// deliver the message
//
Netchan_Transmit (&cls.netchan, buf.cursize, buf.data);
}
void CL_SendCmd (void)
{
sizebuf_t buf;
byte data[128];
usercmd_t *cmd, *oldcmd;
int i, checksumIndex, lost;
qbool dontdrop;
static float pps_balance = 0;
static int dropcount = 0;
if (cls.demoplayback && !cls.mvdplayback)
return; // sendcmds come from the demo
#ifdef FTE_PEXT_CHUNKEDDOWNLOADS
CL_SendChunkDownloadReq();
#endif
// save this command off for prediction
i = cls.netchan.outgoing_sequence & UPDATE_MASK;
cmd = &cl.frames[i].cmd;
cl.frames[i].senttime = cls.realtime;
cl.frames[i].receivedtime = -1; // we haven't gotten a reply yet
// update network stats table
i = cls.netchan.outgoing_sequence&NETWORK_STATS_MASK;
network_stats[i].delta = 0; // filled-in later
network_stats[i].sentsize = 0; // filled-in later
network_stats[i].senttime = cls.realtime;
network_stats[i].receivedtime = -1;
// get basic movement from keyboard
CL_BaseMove (cmd);
// allow mice or other external controllers to add to the move
if (cl_independentPhysics.value == 0 || (physframe && cl_independentPhysics.value != 0))
{
IN_Move(cmd);
}
// if we are spectator, try autocam
if (cl.spectator)
Cam_Track(cmd);
CL_FinishMove(cmd);
cmdtime_msec += cmd->msec;
Cam_FinishMove(cmd);
if (cls.mvdplayback)
{
CL_CalcPlayerFPS(&cl.players[cl.playernum], cmd->msec);
cls.netchan.outgoing_sequence++;
return;
}
SZ_Init (&buf, data, sizeof(data));
SZ_Write (&buf, cls.cmdmsg.data, cls.cmdmsg.cursize);
if (cls.cmdmsg.overflowed)
Com_DPrintf("cls.cmdmsg overflowed\n");
SZ_Clear (&cls.cmdmsg);
// begin a client move command
MSG_WriteByte (&buf, clc_move);
// save the position for a checksum byte
checksumIndex = buf.cursize;
MSG_WriteByte (&buf, 0);
// write our lossage percentage
lost = CL_CalcNet();
MSG_WriteByte (&buf, (byte)lost);
// send this and the previous two cmds in the message, so if the last packet was dropped, it can be recovered
dontdrop = false;
i = (cls.netchan.outgoing_sequence - 2) & UPDATE_MASK;
cmd = &cl.frames[i].cmd;
if (cl_c2sImpulseBackup.value >= 2)
dontdrop = dontdrop || cmd->impulse;
MSG_WriteDeltaUsercmd (&buf, &nullcmd, cmd);
oldcmd = cmd;
i = (cls.netchan.outgoing_sequence - 1) & UPDATE_MASK;
cmd = &cl.frames[i].cmd;
if (cl_c2sImpulseBackup.value >= 3)
dontdrop = dontdrop || cmd->impulse;
MSG_WriteDeltaUsercmd (&buf, oldcmd, cmd);
oldcmd = cmd;
i = (cls.netchan.outgoing_sequence) & UPDATE_MASK;
cmd = &cl.frames[i].cmd;
if (cl_c2sImpulseBackup.value >= 1)
dontdrop = dontdrop || cmd->impulse;
MSG_WriteDeltaUsercmd (&buf, oldcmd, cmd);
// calculate a checksum over the move commands
buf.data[checksumIndex] = COM_BlockSequenceCRCByte(
buf.data + checksumIndex + 1, buf.cursize - checksumIndex - 1,
cls.netchan.outgoing_sequence);
// request delta compression of entities
if (cls.netchan.outgoing_sequence - cl.validsequence >= UPDATE_BACKUP - 1)
{
cl.validsequence = 0;
cl.delta_sequence = 0;
}
if (cl.delta_sequence && !cl_nodelta.value && cls.state == ca_active)
{
cl.frames[cls.netchan.outgoing_sequence & UPDATE_MASK].delta_sequence = cl.delta_sequence;
MSG_WriteByte (&buf, clc_delta);
MSG_WriteByte (&buf, cl.delta_sequence & 255);
// network stats table
network_stats[cls.netchan.outgoing_sequence&NETWORK_STATS_MASK].delta = 1;
}
else
{
cl.frames[cls.netchan.outgoing_sequence & UPDATE_MASK].delta_sequence = -1;
}
if (cls.demorecording)
CL_WriteDemoCmd (cmd);
if (cl_c2spps.value)
{
pps_balance += cls.frametime;
// never drop more than 2 messages in a row -- that'll cause PL
// and don't drop if one of the last two movemessages have an impulse
if (pps_balance > 0 || dropcount >= 2 || dontdrop)
{
float pps;
pps = cl_c2spps.value;
if (pps < 10) pps = 10;
if (pps > 72) pps = 72;
pps_balance -= 1 / pps;
// bound pps_balance. FIXME: is there a better way?
if (pps_balance > 0.1) pps_balance = 0.1;
if (pps_balance < -0.1) pps_balance = -0.1;
dropcount = 0;
}
else
{
// don't count this message when calculating PL
cl.frames[i].receivedtime = -3;
// drop this message
cls.netchan.outgoing_sequence++;
dropcount++;
return;
}
}
else
{
pps_balance = 0;
dropcount = 0;
}
#ifdef FTE_PEXT2_VOICECHAT
S_Voip_Transmit(clc_voicechat, &buf);
#endif
cl.frames[cls.netchan.outgoing_sequence&UPDATE_MASK].sentsize = buf.cursize + 8; // 8 = PACKET_HEADER
// network stats table
network_stats[cls.netchan.outgoing_sequence&NETWORK_STATS_MASK].sentsize = buf.cursize + 8;
// deliver the message
Netchan_Transmit (&cls.netchan, buf.cursize, buf.data);
}
/*
===================
SV_ExecuteClientMessage
The current net_message is parsed for the given client
===================
*/
void SV_ExecuteClientMessage(client_t *cl){
int c;
char *s;
usercmd_t nullcmd;
usercmd_t oldest, oldcmd, newcmd;
int net_drop;
int stringCmdCount;
int checksum, calculatedChecksum;
int checksumIndex;
qboolean move_issued;
int lastframe;
sv_client = cl;
sv_player = sv_client->edict;
// only allow one move command
move_issued = false;
stringCmdCount = 0;
while(1){
if(net_message.readcount > net_message.cursize){
Com_Printf("SV_ReadClientMessage: badread\n");
SV_DropClient(cl);
return;
}
c = MSG_ReadByte(&net_message);
if(c == -1)
break;
switch(c){
default:
Com_Printf("SV_ReadClientMessage: unknown command char\n");
SV_DropClient(cl);
return;
case clc_nop:
break;
case clc_userinfo:
strncpy(cl->userinfo, MSG_ReadString(&net_message), sizeof(cl->userinfo) - 1);
SV_UserinfoChanged(cl);
break;
case clc_move:
if(move_issued)
return; // someone is trying to cheat...
move_issued = true;
checksumIndex = net_message.readcount;
checksum = MSG_ReadByte(&net_message);
lastframe = MSG_ReadLong(&net_message);
if(lastframe != cl->lastframe){
cl->lastframe = lastframe;
if(cl->lastframe > 0){
cl->frame_latency[cl->lastframe&(LATENCY_COUNTS - 1)] =
svs.realtime - cl->frames[cl->lastframe & UPDATE_MASK].senttime;
}
}
memset(&nullcmd, 0, sizeof(nullcmd));
MSG_ReadDeltaUsercmd(&net_message, &nullcmd, &oldest);
MSG_ReadDeltaUsercmd(&net_message, &oldest, &oldcmd);
MSG_ReadDeltaUsercmd(&net_message, &oldcmd, &newcmd);
if(cl->state != cs_spawned){
cl->lastframe = -1;
break;
}
// if the checksum fails, ignore the rest of the packet
calculatedChecksum = COM_BlockSequenceCRCByte(
net_message.data + checksumIndex + 1,
net_message.readcount - checksumIndex - 1,
cl->netchan.incoming_sequence);
if(calculatedChecksum != checksum){
Com_DPrintf("Failed command checksum for %s(%d != %d)/%d\n",
cl->name, calculatedChecksum, checksum,
cl->netchan.incoming_sequence);
return;
}
if(!paused->value){
net_drop = cl->netchan.dropped;
if(net_drop < 20){
// if(net_drop > 2)
// Com_Printf("drop %i\n", net_drop);
while(net_drop > 2){
SV_ClientThink(cl, &cl->lastcmd);
net_drop--;
}
if(net_drop > 1)
SV_ClientThink(cl, &oldest);
if(net_drop > 0)
SV_ClientThink(cl, &oldcmd);
}
SV_ClientThink(cl, &newcmd);
}
cl->lastcmd = newcmd;
break;
case clc_stringcmd:
s = MSG_ReadString(&net_message);
// malicious users may try using too many string commands
if(++stringCmdCount < MAX_STRINGCMDS)
SV_ExecuteUserCommand(s);
if(cl->state == cs_zombie)
return; // disconnect command
break;
}
}
}
/*
=================
CL_SendDefaultCmd
=================
*/
static void CL_SendDefaultCmd( void ) {
size_t cursize, checksumIndex;
usercmd_t *cmd, *oldcmd;
client_history_t *history;
// archive this packet
history = &cl.history[cls.netchan->outgoing_sequence & CMD_MASK];
history->cmdNumber = cl.cmdNumber;
history->sent = cls.realtime; // for ping calculation
history->rcvd = 0;
cl.lastTransmitCmdNumber = cl.cmdNumber;
// see if we are ready to send this packet
if( !ready_to_send_hacked() ) {
cls.netchan->outgoing_sequence++; // just drop the packet
return;
}
cl.lastTransmitTime = cls.realtime;
cl.lastTransmitCmdNumberReal = cl.cmdNumber;
// begin a client move command
MSG_WriteByte( clc_move );
// save the position for a checksum byte
checksumIndex = 0;
if( cls.serverProtocol <= PROTOCOL_VERSION_DEFAULT ) {
checksumIndex = msg_write.cursize;
SZ_GetSpace( &msg_write, 1 );
}
// let the server know what the last frame we
// got was, so the next message can be delta compressed
if( cl_nodelta->integer || !cl.frame.valid /*|| cls.demowaiting*/ ) {
MSG_WriteLong( -1 ); // no compression
} else {
MSG_WriteLong( cl.frame.number );
}
// send this and the previous cmds in the message, so
// if the last packet was dropped, it can be recovered
cmd = &cl.cmds[( cl.cmdNumber - 2 ) & CMD_MASK];
MSG_WriteDeltaUsercmd( NULL, cmd, cls.protocolVersion );
MSG_WriteByte( cl.lightlevel );
oldcmd = cmd;
cmd = &cl.cmds[( cl.cmdNumber - 1 ) & CMD_MASK];
MSG_WriteDeltaUsercmd( oldcmd, cmd, cls.protocolVersion );
MSG_WriteByte( cl.lightlevel );
oldcmd = cmd;
cmd = &cl.cmds[cl.cmdNumber & CMD_MASK];
MSG_WriteDeltaUsercmd( oldcmd, cmd, cls.protocolVersion );
MSG_WriteByte( cl.lightlevel );
if( cls.serverProtocol <= PROTOCOL_VERSION_DEFAULT ) {
// calculate a checksum over the move commands
msg_write.data[checksumIndex] = COM_BlockSequenceCRCByte(
msg_write.data + checksumIndex + 1,
msg_write.cursize - checksumIndex - 1,
cls.netchan->outgoing_sequence );
}
P_FRAMES++;
//
// deliver the message
//
cursize = cls.netchan->Transmit( cls.netchan, msg_write.cursize, msg_write.data, 1 );
#ifdef _DEBUG
if( cl_showpackets->integer ) {
Com_Printf( "%"PRIz" ", cursize );
}
#endif
SZ_Clear( &msg_write );
}
/*
=================
CL_SendCmd
=================
*/
void CL_SendCmd (void)
{
sizebuf_t buf;
byte data[128];
int i;
usercmd_t *cmd, *oldcmd;
int checksumIndex;
int lost;
int seq_hash;
if (cls.demoplayback)
return; // sendcmds come from the demo
// save this command off for prediction
i = cls.netchan.outgoing_sequence & UPDATE_MASK;
cmd = &cl.frames[i].cmd;
cl.frames[i].senttime = realtime;
cl.frames[i].receivedtime = -1; // we haven't gotten a reply yet
// seq_hash = (cls.netchan.outgoing_sequence & 0xffff) ; // ^ QW_CHECK_HASH;
seq_hash = cls.netchan.outgoing_sequence;
// get basic movement from keyboard
CL_BaseMove (cmd);
// allow mice or other external controllers to add to the move
IN_Move (cmd);
// if we are spectator, try autocam
if (cl.spectator)
Cam_Track(cmd);
CL_FinishMove(cmd);
Cam_FinishMove(cmd);
// send this and the previous cmds in the message, so
// if the last packet was dropped, it can be recovered
buf.maxsize = 128;
buf.cursize = 0;
buf.data = data;
MSG_WriteByte (&buf, clc_move);
// save the position for a checksum byte
checksumIndex = buf.cursize;
MSG_WriteByte (&buf, 0);
// write our lossage percentage
lost = CL_CalcNet();
MSG_WriteByte (&buf, (byte)lost);
i = (cls.netchan.outgoing_sequence-2) & UPDATE_MASK;
cmd = &cl.frames[i].cmd;
MSG_WriteDeltaUsercmd (&buf, &nullcmd, cmd);
oldcmd = cmd;
i = (cls.netchan.outgoing_sequence-1) & UPDATE_MASK;
cmd = &cl.frames[i].cmd;
MSG_WriteDeltaUsercmd (&buf, oldcmd, cmd);
oldcmd = cmd;
i = (cls.netchan.outgoing_sequence) & UPDATE_MASK;
cmd = &cl.frames[i].cmd;
MSG_WriteDeltaUsercmd (&buf, oldcmd, cmd);
// calculate a checksum over the move commands
buf.data[checksumIndex] = COM_BlockSequenceCRCByte(
buf.data + checksumIndex + 1, buf.cursize - checksumIndex - 1,
seq_hash);
// request delta compression of entities
if (cls.netchan.outgoing_sequence - cl.validsequence >= UPDATE_BACKUP-1)
cl.validsequence = 0;
if (cl.validsequence && !cl_nodelta.value && cls.state == ca_active &&
!cls.demorecording)
{
cl.frames[cls.netchan.outgoing_sequence&UPDATE_MASK].delta_sequence = cl.validsequence;
MSG_WriteByte (&buf, clc_delta);
MSG_WriteByte (&buf, cl.validsequence&255);
}
else
cl.frames[cls.netchan.outgoing_sequence&UPDATE_MASK].delta_sequence = -1;
if (cls.demorecording)
CL_WriteDemoCmd(cmd);
//
// deliver the message
//
Netchan_Transmit (&cls.netchan, buf.cursize, buf.data);
}
void CL_SendCmd(void)
{
sizebuf_t buf;
byte data[128];
int i;
usercmd_t *cmd, *oldcmd;
usercmd_t nullcmd;
int checksumIndex;
memset(&buf, 0, sizeof(buf));
/* save this command off for prediction */
i = cls.netchan.outgoing_sequence & (CMD_BACKUP - 1);
cmd = &cl.cmds[i];
cl.cmd_time[i] = cls.realtime; /* for netgraph ping calculation */
CL_FinalizeCmd();
cl.cmd = *cmd;
if ((cls.state == ca_disconnected) || (cls.state == ca_connecting)) {
return;
}
if (cls.state == ca_connected) {
if (cls.netchan.message.cursize || (curtime - cls.netchan.last_sent > 1000)) {
Netchan_Transmit(&cls.netchan, 0, buf.data);
}
return;
}
/* send a userinfo update if needed */
if (userinfo_modified) {
CL_FixUpGender();
userinfo_modified = false;
MSG_WriteByte(&cls.netchan.message, clc_userinfo);
MSG_WriteString(&cls.netchan.message, Cvar_Userinfo());
}
SZ_Init(&buf, data, sizeof(data));
/* begin a client move command */
MSG_WriteByte(&buf, clc_move);
/* save the position for a checksum byte */
checksumIndex = buf.cursize;
MSG_WriteByte(&buf, 0);
/* let the server know what the last frame we
got was, so the next message can be delta
compressed */
if (cl_nodelta->value || !cl.frame.valid) {
MSG_WriteLong(&buf, -1); /* no compression */
} else {
MSG_WriteLong(&buf, cl.frame.serverframe);
}
/* send this and the previous cmds in the message, so
if the last packet was dropped, it can be recovered */
i = (cls.netchan.outgoing_sequence - 2) & (CMD_BACKUP - 1);
cmd = &cl.cmds[i];
memset(&nullcmd, 0, sizeof(nullcmd));
MSG_WriteDeltaUsercmd(&buf, &nullcmd, cmd);
oldcmd = cmd;
i = (cls.netchan.outgoing_sequence - 1) & (CMD_BACKUP - 1);
cmd = &cl.cmds[i];
MSG_WriteDeltaUsercmd(&buf, oldcmd, cmd);
oldcmd = cmd;
i = (cls.netchan.outgoing_sequence) & (CMD_BACKUP - 1);
cmd = &cl.cmds[i];
MSG_WriteDeltaUsercmd(&buf, oldcmd, cmd);
/* calculate a checksum over the move commands */
buf.data[checksumIndex] = COM_BlockSequenceCRCByte(buf.data + checksumIndex + 1, buf.cursize - checksumIndex - 1,
cls.netchan.outgoing_sequence);
/* deliver the message */
Netchan_Transmit(&cls.netchan, buf.cursize, buf.data);
/* Reinit the current cmd buffer */
cmd = &cl.cmds[cls.netchan.outgoing_sequence & (CMD_BACKUP - 1)];
memset(cmd, 0, sizeof(*cmd));
}
void SV_ExecuteClientMessage (client_t *cl)
{
int c;
char *s;
usercmd_t oldest, oldcmd, newcmd;
client_frame_t *frame;
vec3_t o;
qboolean move_issued = false; //only allow one move command
int checksumIndex;
byte checksum, calculatedChecksum;
int seq_hash;
// calc ping time
frame = &cl->frames[cl->netchan.incoming_acknowledged & UPDATE_MASK];
frame->ping_time = realtime - frame->senttime;
// make sure the reply sequence number matches the incoming
// sequence number
if (cl->netchan.incoming_sequence >= cl->netchan.outgoing_sequence)
cl->netchan.outgoing_sequence = cl->netchan.incoming_sequence;
else
cl->send_message = false; // don't reply, sequences have slipped
// save time for ping calculations
cl->frames[cl->netchan.outgoing_sequence & UPDATE_MASK].senttime = realtime;
cl->frames[cl->netchan.outgoing_sequence & UPDATE_MASK].ping_time = -1;
host_client = cl;
sv_player = host_client->edict;
// seq_hash = (cl->netchan.incoming_sequence & 0xffff) ; // ^ QW_CHECK_HASH;
seq_hash = cl->netchan.incoming_sequence;
// mark time so clients will know how much to predict
// other players
cl->localtime = sv.time;
cl->delta_sequence = -1; // no delta unless requested
while (1)
{
if (msg_badread)
{
Con_Printf ("SV_ReadClientMessage: badread\n");
SV_DropClient (cl);
return;
}
c = MSG_ReadByte ();
if (c == -1)
break;
switch (c)
{
default:
Con_Printf ("SV_ReadClientMessage: unknown command char\n");
SV_DropClient (cl);
return;
case clc_nop:
break;
case clc_delta:
cl->delta_sequence = MSG_ReadByte ();
break;
case clc_move:
if (move_issued)
return; // someone is trying to cheat...
move_issued = true;
checksumIndex = MSG_GetReadCount();
checksum = (byte)MSG_ReadByte ();
// read loss percentage
cl->lossage = MSG_ReadByte();
MSG_ReadDeltaUsercmd (&nullcmd, &oldest);
MSG_ReadDeltaUsercmd (&oldest, &oldcmd);
MSG_ReadDeltaUsercmd (&oldcmd, &newcmd);
if ( cl->state != cs_spawned )
break;
// if the checksum fails, ignore the rest of the packet
calculatedChecksum = COM_BlockSequenceCRCByte(
net_message.data + checksumIndex + 1,
MSG_GetReadCount() - checksumIndex - 1,
seq_hash);
if (calculatedChecksum != checksum)
{
Con_DPrintf ("Failed command checksum for %s(%d) (%d != %d)\n",
cl->name, cl->netchan.incoming_sequence, checksum, calculatedChecksum);
return;
}
if (!sv.paused) {
SV_PreRunCmd();
if (net_drop < 20)
{
while (net_drop > 2)
{
SV_RunCmd (&cl->lastcmd);
net_drop--;
}
if (net_drop > 1)
SV_RunCmd (&oldest);
if (net_drop > 0)
SV_RunCmd (&oldcmd);
}
SV_RunCmd (&newcmd);
SV_PostRunCmd();
}
cl->lastcmd = newcmd;
cl->lastcmd.buttons = 0; // avoid multiple fires on lag
break;
case clc_stringcmd:
s = MSG_ReadString ();
SV_ExecuteUserCommand (s);
break;
case clc_tmove:
o[0] = MSG_ReadCoord();
o[1] = MSG_ReadCoord();
o[2] = MSG_ReadCoord();
// only allowed by spectators
if (host_client->spectator) {
VectorCopy(o, sv_player->v.origin);
SV_LinkEdict(sv_player, false);
}
break;
case clc_upload:
SV_NextUpload();
break;
}
}
}