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quakeforge/qw/source/sv_send.c

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/*
sv_send.c
(description)
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
static const char rcsid[] =
"$Id$";
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdarg.h>
#include <stdlib.h>
#include <time.h>
#include "QF/console.h"
#include "QF/cvar.h"
#include "QF/msg.h"
#include "QF/sound.h" // FIXME: DEFAULT_SOUND_PACKET_*
#include "QF/sys.h"
#include "bothdefs.h"
#include "compat.h"
#include "server.h"
#include "sv_progs.h"
#define CHAN_AUTO 0
#define CHAN_WEAPON 1
#define CHAN_VOICE 2
#define CHAN_ITEM 3
#define CHAN_BODY 4
/* SV_Printf redirection */
char outputbuf[8000];
int con_printf_no_log;
redirect_t sv_redirected;
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 SV_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;
}
#define MAXPRINTMSG 4096
/*
SV_Printf
Handles cursor positioning, line wrapping, etc
*/
// FIXME: the msg variables need to be renamed/cleaned up
void
SV_Print (const char *fmt, va_list args)
{
static int pending = 0; // partial line being printed
char premsg[MAXPRINTMSG];
unsigned char msg[MAXPRINTMSG];
char msg2[MAXPRINTMSG];
char msg3[MAXPRINTMSG];
time_t mytime = 0;
struct tm *local = NULL;
qboolean timestamps = false;
unsigned char *in, *out;
vsnprintf (premsg, sizeof (premsg), fmt, args);
in = premsg;
out = msg;
// expand FFnickFF to nick <userid>
do {
switch (*in) {
case 0xFF: {
char *end = strchr (in + 1, 0xFF);
int userid = 0;
int len;
int i;
if (!end)
end = in + strlen (in);
*end = '\0';
for (i = 0; i < MAX_CLIENTS; i++) {
if (!svs.clients[i].state)
continue;
if (!strcmp (svs.clients[i].name, in + 1)) {
userid = svs.clients[i].userid;
break;
}
}
len = snprintf (out, sizeof (msg) - (out - msg),
"%s <%d>", in + 1, userid);
out += len;
in = end + 1;
break;
}
default:
*out++ = *in++;
}
} while (sizeof (msg) - (out - msg) > 0 && *in);
*out = '\0';
if (sv_redirected) { // Add to redirected message
if (strlen (msg) + strlen (outputbuf) > sizeof (outputbuf) - 1)
SV_FlushRedirect ();
strncat (outputbuf, msg, sizeof (outputbuf) - strlen (outputbuf));
}
if (!con_printf_no_log) {
// We want to output to console and maybe logfile
if (sv_timestamps && sv_timefmt && sv_timefmt->string
&& sv_timestamps->int_val && !pending)
timestamps = true;
if (timestamps) {
mytime = time (NULL);
local = localtime (&mytime);
strftime (msg3, sizeof (msg3), sv_timefmt->string, local);
snprintf (msg2, sizeof (msg2), "%s%s", msg3, msg);
} else {
snprintf (msg2, sizeof (msg2), "%s", msg);
}
if (msg2[strlen (msg2) - 1] != '\n') {
pending = 1;
} else {
pending = 0;
}
Con_Printf ("%s", msg2); // also echo to debugging console
if (sv_logfile)
Qprintf (sv_logfile, "%s", msg2);
}
}
void
SV_Printf (const char *fmt, ...)
{
va_list argptr;
va_start (argptr, fmt);
SV_Print (fmt, argptr);
va_end (argptr);
}
/* EVENT MESSAGES */
static void
SV_PrintToClient (client_t *cl, int level, const char *string)
{
static unsigned char *buffer;
const unsigned char *a;
unsigned char *b;
int size;
static int buffer_size;
size = strlen (string) + 1;
if (size > buffer_size) {
buffer_size = (size + 1023) & ~1023; // 1k multiples
if (buffer)
free (buffer);
buffer = malloc (buffer_size);
if (!buffer)
Sys_Error ("SV_PrintToClient: could not allocate %d bytes",
buffer_size);
}
a = string;
b = buffer;
// strip 0xFFs
while ((*b = *a++))
if (*b != 0xFF)
b++;
ClientReliableWrite_Begin (cl, svc_print, strlen (buffer) + 3);
ClientReliableWrite_Byte (cl, level);
ClientReliableWrite_String (cl, buffer);
}
/*
SV_ClientPrintf
Sends text across to be displayed if the level passes
*/
void
SV_ClientPrintf (client_t *cl, int level, const char *fmt, ...)
{
char string[1024];
va_list argptr;
if (level < cl->messagelevel)
return;
va_start (argptr, fmt);
vsnprintf (string, sizeof (string), fmt, argptr);
va_end (argptr);
SV_PrintToClient (cl, level, string);
}
/*
SV_BroadcastPrintf
Sends text to all active clients
*/
void
SV_BroadcastPrintf (int level, const char *fmt, ...)
{
char string[1024];
client_t *cl;
int i;
va_list argptr;
va_start (argptr, fmt);
vsnprintf (string, sizeof (string), fmt, argptr);
va_end (argptr);
SV_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 (const char *fmt, ...)
{
char string[1024];
va_list argptr;
if (!sv.state)
return;
va_start (argptr, fmt);
vsnprintf (string, sizeof (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 (const vec3_t origin, int to)
{
byte *mask;
client_t *client;
int leafnum, j;
mleaf_t *leaf;
qboolean 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;
Sys_Error ("SV_Multicast: bad to:%i", 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, SVvector (client->edict, origin), delta);
if (Length (delta) <= 1024)
goto inrange;
}
leaf = Mod_PointInLeaf (SVvector (client->edict, 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)))) {
// SV_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
already 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, const char *sample, int volume,
float attenuation)
{
int ent, field_mask, sound_num, i;
qboolean use_phs;
qboolean reliable = false;
vec3_t origin;
if (volume < 0 || volume > 255)
Sys_Error ("SV_StartSound: volume = %i", volume);
if (attenuation < 0 || attenuation > 4)
Sys_Error ("SV_StartSound: attenuation = %f", attenuation);
if (channel < 0 || channel > 15)
Sys_Error ("SV_StartSound: channel = %i", 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]) {
SV_Printf ("SV_StartSound: %s not precacheed\n", sample);
return;
}
ent = NUM_FOR_EDICT (&sv_pr_state, entity);
if ((channel & 8) || !sv_phs->int_val) // 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;
field_mask = 0;
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 (SVfloat (entity, solid) == SOLID_BSP) {
for (i = 0; i < 3; i++)
origin[i] = SVvector (entity, origin)[i] + 0.5 *
(SVvector (entity, mins)[i] + SVvector (entity, maxs)[i]);
} else {
VectorCopy (SVvector (entity, 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);
MSG_WriteCoordV (&sv.multicast, origin);
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;
}
}
void
SV_WriteClientdataToMessage (client_t *client, sizebuf_t *msg)
{
edict_t *ent, *other;
int i;
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 (SVfloat (ent, dmg_take) || SVfloat (ent, dmg_save)) {
other = PROG_TO_EDICT (&sv_pr_state, SVentity (ent, dmg_inflictor));
MSG_WriteByte (msg, svc_damage);
MSG_WriteByte (msg, SVfloat (ent, dmg_save));
MSG_WriteByte (msg, SVfloat (ent, dmg_take));
for (i = 0; i < 3; i++)
MSG_WriteCoord (msg, SVvector (other, origin)[i] + 0.5 *
(SVvector (other, mins)[i] +
SVvector (other, maxs)[i]));
SVfloat (ent, dmg_take) = 0;
SVfloat (ent, dmg_save) = 0;
}
// a fixangle might get lost in a dropped packet. Oh well.
if (SVfloat (ent, fixangle)) {
MSG_WriteByte (msg, svc_setangle);
MSG_WriteAngleV (msg, SVvector (ent, angles));
SVfloat (ent, 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 i;
int stats[MAX_CL_STATS];
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] = SVfloat (ent, health);
stats[STAT_WEAPON] = SV_ModelIndex
(PR_GetString (&sv_pr_state, SVstring (ent, weaponmodel)));
stats[STAT_AMMO] = SVfloat (ent, currentammo);
stats[STAT_ARMOR] = SVfloat (ent, armorvalue);
stats[STAT_SHELLS] = SVfloat (ent, ammo_shells);
stats[STAT_NAILS] = SVfloat (ent, ammo_nails);
stats[STAT_ROCKETS] = SVfloat (ent, ammo_rockets);
stats[STAT_CELLS] = SVfloat (ent, ammo_cells);
if (!client->spectator)
stats[STAT_ACTIVEWEAPON] = SVfloat (ent, weapon);
// stuff the sigil bits into the high bits of items for sbar
stats[STAT_ITEMS] =
(int) SVfloat (ent, items) | ((int) *sv_globals.serverflags << 28);
// Extensions to the QW 2.40 protocol for Mega2k --KB
stats[STAT_VIEWHEIGHT] = (int) SVvector (ent, view_ofs)[2];
// FIXME: this should become a * key! --KB
if (SVfloat (ent, movetype) == MOVETYPE_FLY && !atoi (Info_ValueForKey
(svs.info, "playerfly")))
SVfloat (ent, movetype) = MOVETYPE_WALK;
stats[STAT_FLYMODE] = (SVfloat (ent, movetype) == MOVETYPE_FLY);
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]);
}
}
}
qboolean
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)
SV_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) {
SV_Printf ("WARNING: msg overflowed for %s\n", client->name);
SZ_Clear (&msg);
}
// send the datagram
Netchan_Transmit (&client->netchan, msg.cursize, buf);
return true;
}
void
SV_UpdateToReliableMessages (void)
{
client_t *client;
edict_t *ent;
int i, j;
// 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 != (int) SVfloat (host_client->edict, 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, SVfloat (host_client->edict,
frags));
}
host_client->old_frags = SVfloat (host_client->edict, frags);
}
// maxspeed/entgravity changes
ent = host_client->edict;
if (sv_fields.gravity != -1
&& host_client->entgravity != SVfloat (ent, gravity)) {
host_client->entgravity = SVfloat (ent, gravity);
ClientReliableWrite_Begin (host_client, svc_entgravity, 5);
ClientReliableWrite_Float (host_client, host_client->entgravity);
}
if (sv_fields.maxspeed != -1
&& host_client->maxspeed != SVfloat (ent, maxspeed)) {
host_client->maxspeed = SVfloat (ent, maxspeed);
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);
}
#if defined(_WIN32) && !defined(__GNUC__)
# pragma optimize( "", off )
#endif
void
SV_SendClientMessages (void)
{
client_t *c;
int i, j;
// 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) {
int i;
extern void Analyze_Server_Packet (byte *data, int len);
byte *data = Hunk_TempAlloc (MAX_MSGLEN + 8);
memset (data, 0, 8);
memcpy (data + 8, c->netchan.message.data,
c->netchan.message.cursize);
Analyze_Server_Packet (data, c->netchan.message.cursize + 8);
for (i = 0; i < c->num_backbuf; i++) {
memcpy (data + 8, c->backbuf_data[i], c->backbuf_size[i]);
Analyze_Server_Packet (data, c->backbuf_size[i] + 8);
}
SZ_Clear (&c->netchan.message);
SZ_Clear (&c->datagram);
SV_BroadcastPrintf (PRINT_HIGH, "%s overflowed\n", c->name);
SV_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
}
}
#if defined(_WIN32) && !defined(__GNUC__)
# pragma optimize( "", on )
#endif
/*
SV_SendMessagesToAll
FIXME: does this sequence right?
*/
void
SV_SendMessagesToAll (void)
{
client_t *c;
int i;
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 ();
}
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