ref: db9b193ab08b9e033e80887e31ac7cca8203d906
dir: /qw/sv_send.c/
// sv_main.c -- server main program
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "quakedef.h"
#define CHAN_AUTO 0
#define CHAN_WEAPON 1
#define CHAN_VOICE 2
#define CHAN_ITEM 3
#define CHAN_BODY 4
/*
=============================================================================
Con_Printf redirection
=============================================================================
*/
char outputbuf[8000];
redirect_t sv_redirected;
extern cvar_t sv_phs;
/*
==================
SV_FlushRedirect
==================
*/
void SV_FlushRedirect (void)
{
char send[8000+6];
if (sv_redirected == RD_PACKET)
{
send[0] = 0xff;
send[1] = 0xff;
send[2] = 0xff;
send[3] = 0xff;
send[4] = A2C_PRINT;
memcpy (send+5, outputbuf, strlen(outputbuf)+1);
NET_SendPacket (strlen(send)+1, send, net_from);
}
else if (sv_redirected == RD_CLIENT)
{
ClientReliableWrite_Begin (host_client, svc_print, strlen(outputbuf)+3);
ClientReliableWrite_Byte (host_client, PRINT_HIGH);
ClientReliableWrite_String (host_client, outputbuf);
}
// clear it
outputbuf[0] = 0;
}
/*
==================
SV_BeginRedirect
Send Con_Printf data to the remote client
instead of the console
==================
*/
void SV_BeginRedirect (redirect_t rd)
{
sv_redirected = rd;
outputbuf[0] = 0;
}
void SV_EndRedirect (void)
{
SV_FlushRedirect ();
sv_redirected = RD_NONE;
}
/*
================
Con_Printf
Handles cursor positioning, line wrapping, etc
================
*/
#define MAXPRINTMSG 4096
// FIXME: make a buffer size safe vsprintf?
void Con_Printf (char *fmt, ...)
{
va_list argptr;
char msg[MAXPRINTMSG];
va_start (argptr,fmt);
vsprintf (msg,fmt,argptr);
va_end (argptr);
// add to redirected message
if (sv_redirected)
{
if (strlen (msg) + strlen(outputbuf) > sizeof(outputbuf) - 1)
SV_FlushRedirect ();
strcat (outputbuf, msg);
return;
}
Sys_Printf ("%s", msg); // also echo to debugging console
if (sv_logfile)
fprintf (sv_logfile, "%s", msg);
}
/*
================
Con_DPrintf
A Con_Printf that only shows up if the "developer" cvar is set
================
*/
void Con_DPrintf (char *fmt, ...)
{
va_list argptr;
char msg[MAXPRINTMSG];
if (!developer.value)
return;
va_start (argptr,fmt);
vsprintf (msg,fmt,argptr);
va_end (argptr);
Con_Printf ("%s", msg);
}
/*
=============================================================================
EVENT MESSAGES
=============================================================================
*/
static void SV_PrintToClient(client_t *cl, int level, char *string)
{
ClientReliableWrite_Begin (cl, svc_print, strlen(string)+3);
ClientReliableWrite_Byte (cl, level);
ClientReliableWrite_String (cl, string);
}
/*
=================
SV_ClientPrintf
Sends text across to be displayed if the level passes
=================
*/
void SV_ClientPrintf (client_t *cl, int level, char *fmt, ...)
{
va_list argptr;
char string[1024];
if (level < cl->messagelevel)
return;
va_start (argptr,fmt);
vsprintf (string, fmt,argptr);
va_end (argptr);
SV_PrintToClient(cl, level, string);
}
/*
=================
SV_BroadcastPrintf
Sends text to all active clients
=================
*/
void SV_BroadcastPrintf (int level, char *fmt, ...)
{
va_list argptr;
char string[1024];
client_t *cl;
int i;
va_start (argptr,fmt);
vsprintf (string, fmt,argptr);
va_end (argptr);
Sys_Printf ("%s", string); // print to the console
for (i=0, cl = svs.clients ; i<MAX_CLIENTS ; i++, cl++)
{
if (level < cl->messagelevel)
continue;
if (!cl->state)
continue;
SV_PrintToClient(cl, level, string);
}
}
/*
=================
SV_BroadcastCommand
Sends text to all active clients
=================
*/
void SV_BroadcastCommand (char *fmt, ...)
{
va_list argptr;
char string[1024];
if (!sv.state)
return;
va_start (argptr,fmt);
vsprintf (string, fmt,argptr);
va_end (argptr);
MSG_WriteByte (&sv.reliable_datagram, svc_stufftext);
MSG_WriteString (&sv.reliable_datagram, string);
}
/*
=================
SV_Multicast
Sends the contents of sv.multicast to a subset of the clients,
then clears sv.multicast.
MULTICAST_ALL same as broadcast
MULTICAST_PVS send to clients potentially visible from org
MULTICAST_PHS send to clients potentially hearable from org
=================
*/
void SV_Multicast (vec3_t origin, int to)
{
client_t *client;
byte *mask;
mleaf_t *leaf;
int leafnum;
int j;
bool reliable;
leaf = Mod_PointInLeaf (origin, sv.worldmodel);
if (!leaf)
leafnum = 0;
else
leafnum = leaf - sv.worldmodel->leafs;
reliable = false;
switch (to)
{
case MULTICAST_ALL_R:
reliable = true; // intentional fallthrough
case MULTICAST_ALL:
mask = sv.pvs; // leaf 0 is everything;
break;
case MULTICAST_PHS_R:
reliable = true; // intentional fallthrough
case MULTICAST_PHS:
mask = sv.phs + leafnum * 4*((sv.worldmodel->numleafs+31)>>5);
break;
case MULTICAST_PVS_R:
reliable = true; // intentional fallthrough
case MULTICAST_PVS:
mask = sv.pvs + leafnum * 4*((sv.worldmodel->numleafs+31)>>5);
break;
default:
mask = NULL;
SV_Error ("SV_Multicast: bad to:%d", to);
}
// send the data to all relevent clients
for (j = 0, client = svs.clients; j < MAX_CLIENTS; j++, client++)
{
if (client->state != cs_spawned)
continue;
if (to == MULTICAST_PHS_R || to == MULTICAST_PHS) {
vec3_t delta;
VectorSubtract(origin, client->edict->v.origin, delta);
if (Length(delta) <= 1024)
goto inrange;
}
leaf = Mod_PointInLeaf (client->edict->v.origin, sv.worldmodel);
if (leaf)
{
// -1 is because pvs rows are 1 based, not 0 based like leafs
leafnum = leaf - sv.worldmodel->leafs - 1;
if ( !(mask[leafnum>>3] & (1<<(leafnum&7)) ) )
{
// Con_Printf ("supressed multicast\n");
continue;
}
}
inrange:
if (reliable) {
ClientReliableCheckBlock(client, sv.multicast.cursize);
ClientReliableWrite_SZ(client, sv.multicast.data, sv.multicast.cursize);
} else
SZ_Write (&client->datagram, sv.multicast.data, sv.multicast.cursize);
}
SZ_Clear (&sv.multicast);
}
/*
==================
SV_StartSound
Each entity can have eight independant sound sources, like voice,
weapon, feet, etc.
Channel 0 is an auto-allocate channel, the others override anything
allready running on that entity/channel pair.
An attenuation of 0 will play full volume everywhere in the level.
Larger attenuations will drop off. (max 4 attenuation)
==================
*/
void SV_StartSound (edict_t *entity, int channel, char *sample, int volume,
float attenuation)
{
int sound_num;
int i;
int ent;
vec3_t origin;
bool use_phs;
bool reliable = false;
if (volume < 0 || volume > 255)
SV_Error ("SV_StartSound: volume = %d", volume);
if (attenuation < 0 || attenuation > 4)
SV_Error ("SV_StartSound: attenuation = %f", attenuation);
if (channel < 0 || channel > 15)
SV_Error ("SV_StartSound: channel = %d", channel);
// find precache number for sound
for (sound_num=1 ; sound_num<MAX_SOUNDS
&& sv.sound_precache[sound_num] ; sound_num++)
if (!strcmp(sample, sv.sound_precache[sound_num]))
break;
if ( sound_num == MAX_SOUNDS || !sv.sound_precache[sound_num] )
{
Con_Printf ("SV_StartSound: %s not precacheed\n", sample);
return;
}
ent = NUM_FOR_EDICT(entity);
if ((channel & 8) || !sv_phs.value) // no PHS flag
{
if (channel & 8)
reliable = true; // sounds that break the phs are reliable
use_phs = false;
channel &= 7;
}
else
use_phs = true;
// if (channel == CHAN_BODY || channel == CHAN_VOICE)
// reliable = true;
channel = (ent<<3) | channel;
if (volume != DEFAULT_SOUND_PACKET_VOLUME)
channel |= SND_VOLUME;
if (attenuation != DEFAULT_SOUND_PACKET_ATTENUATION)
channel |= SND_ATTENUATION;
// use the entity origin unless it is a bmodel
if (entity->v.solid == SOLID_BSP)
{
for (i=0 ; i<3 ; i++)
origin[i] = entity->v.origin[i]+0.5*(entity->v.mins[i]+entity->v.maxs[i]);
}
else
{
VectorCopy (entity->v.origin, origin);
}
MSG_WriteByte (&sv.multicast, svc_sound);
MSG_WriteShort (&sv.multicast, channel);
if (channel & SND_VOLUME)
MSG_WriteByte (&sv.multicast, volume);
if (channel & SND_ATTENUATION)
MSG_WriteByte (&sv.multicast, attenuation*64);
MSG_WriteByte (&sv.multicast, sound_num);
for (i=0 ; i<3 ; i++)
MSG_WriteCoord (&sv.multicast, origin[i]);
if (use_phs)
SV_Multicast (origin, reliable ? MULTICAST_PHS_R : MULTICAST_PHS);
else
SV_Multicast (origin, reliable ? MULTICAST_ALL_R : MULTICAST_ALL);
}
/*
===============================================================================
FRAME UPDATES
===============================================================================
*/
int sv_nailmodel, sv_supernailmodel, sv_playermodel;
void SV_FindModelNumbers (void)
{
int i;
sv_nailmodel = -1;
sv_supernailmodel = -1;
sv_playermodel = -1;
for (i=0 ; i<MAX_MODELS ; i++)
{
if (!sv.model_precache[i])
break;
if (!strcmp(sv.model_precache[i],"progs/spike.mdl"))
sv_nailmodel = i;
if (!strcmp(sv.model_precache[i],"progs/s_spike.mdl"))
sv_supernailmodel = i;
if (!strcmp(sv.model_precache[i],"progs/player.mdl"))
sv_playermodel = i;
}
}
/*
==================
SV_WriteClientdataToMessage
==================
*/
void SV_WriteClientdataToMessage (client_t *client, sizebuf_t *msg)
{
int i;
edict_t *other;
edict_t *ent;
ent = client->edict;
// send the chokecount for r_netgraph
if (client->chokecount)
{
MSG_WriteByte (msg, svc_chokecount);
MSG_WriteByte (msg, client->chokecount);
client->chokecount = 0;
}
// send a damage message if the player got hit this frame
if (ent->v.dmg_take || ent->v.dmg_save)
{
other = PROG_TO_EDICT(ent->v.dmg_inflictor);
MSG_WriteByte (msg, svc_damage);
MSG_WriteByte (msg, ent->v.dmg_save);
MSG_WriteByte (msg, ent->v.dmg_take);
for (i=0 ; i<3 ; i++)
MSG_WriteCoord (msg, other->v.origin[i] + 0.5*(other->v.mins[i] + other->v.maxs[i]));
ent->v.dmg_take = 0;
ent->v.dmg_save = 0;
}
// a fixangle might get lost in a dropped packet. Oh well.
if ( ent->v.fixangle )
{
MSG_WriteByte (msg, svc_setangle);
for (i=0 ; i < 3 ; i++)
MSG_WriteAngle (msg, ent->v.angles[i] );
ent->v.fixangle = 0;
}
}
/*
=======================
SV_UpdateClientStats
Performs a delta update of the stats array. This should only be performed
when a reliable message can be delivered this frame.
=======================
*/
void SV_UpdateClientStats (client_t *client)
{
edict_t *ent;
int stats[MAX_CL_STATS];
int i;
ent = client->edict;
memset (stats, 0, sizeof(stats));
// if we are a spectator and we are tracking a player, we get his stats
// so our status bar reflects his
if (client->spectator && client->spec_track > 0)
ent = svs.clients[client->spec_track - 1].edict;
stats[STAT_HEALTH] = ent->v.health;
stats[STAT_WEAPON] = SV_ModelIndex(PR_GetString(ent->v.weaponmodel));
stats[STAT_AMMO] = ent->v.currentammo;
stats[STAT_ARMOR] = ent->v.armorvalue;
stats[STAT_SHELLS] = ent->v.ammo_shells;
stats[STAT_NAILS] = ent->v.ammo_nails;
stats[STAT_ROCKETS] = ent->v.ammo_rockets;
stats[STAT_CELLS] = ent->v.ammo_cells;
if (!client->spectator)
stats[STAT_ACTIVEWEAPON] = ent->v.weapon;
// stuff the sigil bits into the high bits of items for sbar
stats[STAT_ITEMS] = (int)ent->v.items | ((int)pr_global_struct->serverflags << 28);
for (i=0 ; i<MAX_CL_STATS ; i++)
if (stats[i] != client->stats[i])
{
client->stats[i] = stats[i];
if (stats[i] >=0 && stats[i] <= 255)
{
ClientReliableWrite_Begin(client, svc_updatestat, 3);
ClientReliableWrite_Byte(client, i);
ClientReliableWrite_Byte(client, stats[i]);
}
else
{
ClientReliableWrite_Begin(client, svc_updatestatlong, 6);
ClientReliableWrite_Byte(client, i);
ClientReliableWrite_Long(client, stats[i]);
}
}
}
/*
=======================
SV_SendClientDatagram
=======================
*/
bool SV_SendClientDatagram (client_t *client)
{
byte buf[MAX_DATAGRAM];
sizebuf_t msg;
msg.data = buf;
msg.maxsize = sizeof(buf);
msg.cursize = 0;
msg.allowoverflow = true;
msg.overflowed = false;
// add the client specific data to the datagram
SV_WriteClientdataToMessage (client, &msg);
// send over all the objects that are in the PVS
// this will include clients, a packetentities, and
// possibly a nails update
SV_WriteEntitiesToClient (client, &msg);
// copy the accumulated multicast datagram
// for this client out to the message
if (client->datagram.overflowed)
Con_Printf ("WARNING: datagram overflowed for %s\n", client->name);
else
SZ_Write (&msg, client->datagram.data, client->datagram.cursize);
SZ_Clear (&client->datagram);
// send deltas over reliable stream
if (Netchan_CanReliable (&client->netchan))
SV_UpdateClientStats (client);
if (msg.overflowed)
{
Con_Printf ("WARNING: msg overflowed for %s\n", client->name);
SZ_Clear (&msg);
}
// send the datagram
Netchan_Transmit (&client->netchan, msg.cursize, buf);
return true;
}
/*
=======================
SV_UpdateToReliableMessages
=======================
*/
void SV_UpdateToReliableMessages (void)
{
int i, j;
client_t *client;
eval_t *val;
edict_t *ent;
// check for changes to be sent over the reliable streams to all clients
for (i=0, host_client = svs.clients ; i<MAX_CLIENTS ; i++, host_client++)
{
if (host_client->state != cs_spawned)
continue;
if (host_client->sendinfo)
{
host_client->sendinfo = false;
SV_FullClientUpdate (host_client, &sv.reliable_datagram);
}
if (host_client->old_frags != host_client->edict->v.frags)
{
for (j=0, client = svs.clients ; j<MAX_CLIENTS ; j++, client++)
{
if (client->state < cs_connected)
continue;
ClientReliableWrite_Begin(client, svc_updatefrags, 4);
ClientReliableWrite_Byte(client, i);
ClientReliableWrite_Short(client, host_client->edict->v.frags);
}
host_client->old_frags = host_client->edict->v.frags;
}
// maxspeed/entgravity changes
ent = host_client->edict;
val = GetEdictFieldValue(ent, "gravity");
if (val && host_client->entgravity != val->_float) {
host_client->entgravity = val->_float;
ClientReliableWrite_Begin(host_client, svc_entgravity, 5);
ClientReliableWrite_Float(host_client, host_client->entgravity);
}
val = GetEdictFieldValue(ent, "maxspeed");
if (val && host_client->maxspeed != val->_float) {
host_client->maxspeed = val->_float;
ClientReliableWrite_Begin(host_client, svc_maxspeed, 5);
ClientReliableWrite_Float(host_client, host_client->maxspeed);
}
}
if (sv.datagram.overflowed)
SZ_Clear (&sv.datagram);
// append the broadcast messages to each client messages
for (j=0, client = svs.clients ; j<MAX_CLIENTS ; j++, client++)
{
if (client->state < cs_connected)
continue; // reliables go to all connected or spawned
ClientReliableCheckBlock(client, sv.reliable_datagram.cursize);
ClientReliableWrite_SZ(client, sv.reliable_datagram.data, sv.reliable_datagram.cursize);
if (client->state != cs_spawned)
continue; // datagrams only go to spawned
SZ_Write (&client->datagram
, sv.datagram.data
, sv.datagram.cursize);
}
SZ_Clear (&sv.reliable_datagram);
SZ_Clear (&sv.datagram);
}
/*
=======================
SV_SendClientMessages
=======================
*/
void SV_SendClientMessages (void)
{
int i, j;
client_t *c;
// update frags, names, etc
SV_UpdateToReliableMessages ();
// build individual updates
for (i=0, c = svs.clients ; i<MAX_CLIENTS ; i++, c++)
{
if (!c->state)
continue;
if (c->drop) {
SV_DropClient(c);
c->drop = false;
continue;
}
// check to see if we have a backbuf to stick in the reliable
if (c->num_backbuf) {
// will it fit?
if (c->netchan.message.cursize + c->backbuf_size[0] <
c->netchan.message.maxsize) {
Con_DPrintf("%s: backbuf %d bytes\n",
c->name, c->backbuf_size[0]);
// it'll fit
SZ_Write(&c->netchan.message, c->backbuf_data[0],
c->backbuf_size[0]);
//move along, move along
for (j = 1; j < c->num_backbuf; j++) {
memcpy(c->backbuf_data[j - 1], c->backbuf_data[j],
c->backbuf_size[j]);
c->backbuf_size[j - 1] = c->backbuf_size[j];
}
c->num_backbuf--;
if (c->num_backbuf) {
memset(&c->backbuf, 0, sizeof(c->backbuf));
c->backbuf.data = c->backbuf_data[c->num_backbuf - 1];
c->backbuf.cursize = c->backbuf_size[c->num_backbuf - 1];
c->backbuf.maxsize = sizeof(c->backbuf_data[c->num_backbuf - 1]);
}
}
}
// if the reliable message overflowed,
// drop the client
if (c->netchan.message.overflowed)
{
SZ_Clear (&c->netchan.message);
SZ_Clear (&c->datagram);
SV_BroadcastPrintf (PRINT_HIGH, "%s overflowed\n", c->name);
Con_Printf ("WARNING: reliable overflow for %s\n",c->name);
SV_DropClient (c);
c->send_message = true;
c->netchan.cleartime = 0; // don't choke this message
}
// only send messages if the client has sent one
// and the bandwidth is not choked
if (!c->send_message)
continue;
c->send_message = false; // try putting this after choke?
if (!sv.paused && !Netchan_CanPacket (&c->netchan))
{
c->chokecount++;
continue; // bandwidth choke
}
if (c->state == cs_spawned)
SV_SendClientDatagram (c);
else
Netchan_Transmit (&c->netchan, 0, NULL); // just update reliable
}
}
/*
=======================
SV_SendMessagesToAll
FIXME: does this sequence right?
=======================
*/
void SV_SendMessagesToAll (void)
{
int i;
client_t *c;
for (i=0, c = svs.clients ; i<MAX_CLIENTS ; i++, c++)
if (c->state) // FIXME: should this only send to active?
c->send_message = true;
SV_SendClientMessages ();
}