forked from skullernet/q2pro
/
sv_game.c
916 lines (743 loc) · 22.4 KB
/
sv_game.c
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/*
Copyright (C) 1997-2001 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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// sv_game.c -- interface to the game dll
#include "sv_local.h"
game_export_t *ge;
static void PF_configstring(int index, const char *val);
/*
================
PF_FindIndex
================
*/
static int PF_FindIndex(const char *name, int start, int max)
{
char *string;
int i;
if (!name || !name[0])
return 0;
for (i = 1; i < max; i++) {
string = sv.configstrings[start + i];
if (!string[0]) {
break;
}
if (!strcmp(string, name)) {
return i;
}
}
if (i == max)
Com_Error(ERR_DROP, "PF_FindIndex: overflow");
PF_configstring(i + start, name);
return i;
}
static int PF_ModelIndex(const char *name)
{
return PF_FindIndex(name, CS_MODELS, MAX_MODELS);
}
static int PF_SoundIndex(const char *name)
{
return PF_FindIndex(name, CS_SOUNDS, MAX_SOUNDS);
}
static int PF_ImageIndex(const char *name)
{
return PF_FindIndex(name, CS_IMAGES, MAX_IMAGES);
}
/*
===============
PF_Unicast
Sends the contents of the mutlicast buffer to a single client.
Archived in MVD stream.
===============
*/
static void PF_Unicast(edict_t *ent, qboolean reliable)
{
client_t *client;
int clientNum;
if (!ent) {
goto clear;
}
clientNum = NUM_FOR_EDICT(ent) - 1;
if (clientNum < 0 || clientNum >= sv_maxclients->integer) {
Com_WPrintf("%s to a non-client %d\n", __func__, clientNum);
goto clear;
}
client = svs.client_pool + clientNum;
if (client->state <= cs_zombie) {
Com_WPrintf("%s to a free/zombie client %d\n", __func__, clientNum);
goto clear;
}
SV_ClientAddMessage(client, reliable ? MSG_RELIABLE : 0);
if (msg_write.data[0] == svc_disconnect) {
// fix anti-kicking exploit for broken mods
client->drop_hack = qtrue;
goto clear;
}
#if USE_MVD_SERVER
SV_MvdUnicast(ent, clientNum, reliable);
#endif
clear:
SZ_Clear(&msg_write);
}
/*
=================
PF_bprintf
Sends text to all active clients.
Archived in MVD stream.
=================
*/
static void PF_bprintf(int level, const char *fmt, ...)
{
va_list argptr;
char string[MAX_STRING_CHARS];
client_t *client;
size_t len;
int i;
va_start(argptr, fmt);
len = Q_vsnprintf(string, sizeof(string), fmt, argptr);
va_end(argptr);
if (len >= sizeof(string)) {
Com_WPrintf("%s: overflow\n", __func__);
return;
}
#if USE_MVD_SERVER
SV_MvdBroadcastPrint(level, string);
#endif
MSG_WriteByte(svc_print);
MSG_WriteByte(level);
MSG_WriteData(string, len + 1);
// echo to console
if (Com_IsDedicated()) {
// mask off high bits
for (i = 0; i < len; i++)
string[i] &= 127;
Com_Printf("%s", string);
}
FOR_EACH_CLIENT(client) {
if (client->state != cs_spawned)
continue;
if (level >= client->messagelevel) {
SV_ClientAddMessage(client, MSG_RELIABLE);
}
}
SZ_Clear(&msg_write);
}
/*
===============
PF_dprintf
Debug print to server console.
===============
*/
static void PF_dprintf(const char *fmt, ...)
{
char msg[MAXPRINTMSG];
va_list argptr;
va_start(argptr, fmt);
Q_vsnprintf(msg, sizeof(msg), fmt, argptr);
va_end(argptr);
Com_Printf("%s", msg);
}
/*
===============
PF_cprintf
Print to a single client if the level passes.
Archived in MVD stream.
===============
*/
static void PF_cprintf(edict_t *ent, int level, const char *fmt, ...)
{
char msg[MAX_STRING_CHARS];
va_list argptr;
int clientNum;
size_t len;
client_t *client;
va_start(argptr, fmt);
len = Q_vsnprintf(msg, sizeof(msg), fmt, argptr);
va_end(argptr);
if (len >= sizeof(msg)) {
Com_WPrintf("%s: overflow\n", __func__);
return;
}
if (!ent) {
Com_LPrintf(level == PRINT_CHAT ? PRINT_TALK : PRINT_ALL, "%s", msg);
return;
}
clientNum = NUM_FOR_EDICT(ent) - 1;
if (clientNum < 0 || clientNum >= sv_maxclients->integer) {
Com_Error(ERR_DROP, "%s to a non-client %d", __func__, clientNum);
}
client = svs.client_pool + clientNum;
if (client->state <= cs_zombie) {
Com_WPrintf("%s to a free/zombie client %d\n", __func__, clientNum);
return;
}
MSG_WriteByte(svc_print);
MSG_WriteByte(level);
MSG_WriteData(msg, len + 1);
if (level >= client->messagelevel) {
SV_ClientAddMessage(client, MSG_RELIABLE);
}
#if USE_MVD_SERVER
SV_MvdUnicast(ent, clientNum, qtrue);
#endif
SZ_Clear(&msg_write);
}
/*
===============
PF_centerprintf
Centerprint to a single client.
Archived in MVD stream.
===============
*/
static void PF_centerprintf(edict_t *ent, const char *fmt, ...)
{
char msg[MAX_STRING_CHARS];
va_list argptr;
int n;
size_t len;
if (!ent) {
return;
}
n = NUM_FOR_EDICT(ent);
if (n < 1 || n > sv_maxclients->integer) {
Com_WPrintf("%s to a non-client %d\n", __func__, n - 1);
return;
}
va_start(argptr, fmt);
len = Q_vsnprintf(msg, sizeof(msg), fmt, argptr);
va_end(argptr);
if (len >= sizeof(msg)) {
Com_WPrintf("%s: overflow\n", __func__);
return;
}
MSG_WriteByte(svc_centerprint);
MSG_WriteData(msg, len + 1);
PF_Unicast(ent, qtrue);
}
/*
===============
PF_error
Abort the server with a game error
===============
*/
static q_noreturn void PF_error(const char *fmt, ...)
{
char msg[MAXERRORMSG];
va_list argptr;
va_start(argptr, fmt);
Q_vsnprintf(msg, sizeof(msg), fmt, argptr);
va_end(argptr);
Com_Error(ERR_DROP, "Game Error: %s", msg);
}
/*
=================
PF_setmodel
Also sets mins and maxs for inline bmodels
=================
*/
static void PF_setmodel(edict_t *ent, const char *name)
{
int i;
mmodel_t *mod;
if (!name)
Com_Error(ERR_DROP, "PF_setmodel: NULL");
i = PF_ModelIndex(name);
ent->s.modelindex = i;
// if it is an inline model, get the size information for it
if (name[0] == '*') {
mod = CM_InlineModel(&sv.cm, name);
VectorCopy(mod->mins, ent->mins);
VectorCopy(mod->maxs, ent->maxs);
PF_LinkEdict(ent);
}
}
/*
===============
PF_configstring
If game is actively running, broadcasts configstring change.
Archived in MVD stream.
===============
*/
static void PF_configstring(int index, const char *val)
{
size_t len, maxlen;
client_t *client;
char *dst;
if (index < 0 || index >= MAX_CONFIGSTRINGS)
Com_Error(ERR_DROP, "%s: bad index: %d", __func__, index);
if (sv.state == ss_dead) {
Com_WPrintf("%s: not yet initialized\n", __func__);
return;
}
if (!val)
val = "";
// error out entirely if it exceedes array bounds
len = strlen(val);
maxlen = (MAX_CONFIGSTRINGS - index) * MAX_QPATH;
if (len >= maxlen) {
Com_Error(ERR_DROP,
"%s: index %d overflowed: %"PRIz" > %"PRIz,
__func__, index, len, maxlen - 1);
}
// print a warning and truncate everything else
maxlen = CS_SIZE(index);
if (len >= maxlen) {
Com_WPrintf(
"%s: index %d overflowed: %"PRIz" > %"PRIz"\n",
__func__, index, len, maxlen - 1);
len = maxlen - 1;
}
dst = sv.configstrings[index];
if (!strncmp(dst, val, len)) {
return;
}
// change the string in sv
memcpy(dst, val, len);
dst[len] = 0;
if (sv.state == ss_loading) {
return;
}
#if USE_MVD_SERVER
SV_MvdConfigstring(index, val, len);
#endif
// send the update to everyone
MSG_WriteByte(svc_configstring);
MSG_WriteShort(index);
MSG_WriteData(val, len);
MSG_WriteByte(0);
FOR_EACH_CLIENT(client) {
if (client->state < cs_primed) {
continue;
}
SV_ClientAddMessage(client, MSG_RELIABLE);
}
SZ_Clear(&msg_write);
}
static void PF_WriteFloat(float f)
{
Com_Error(ERR_DROP, "PF_WriteFloat not implemented");
}
static qboolean PF_inVIS(vec3_t p1, vec3_t p2, int vis)
{
mleaf_t *leaf1, *leaf2;
byte mask[VIS_MAX_BYTES];
bsp_t *bsp = sv.cm.cache;
if (!bsp) {
Com_Error(ERR_DROP, "%s: no map loaded", __func__);
}
leaf1 = BSP_PointLeaf(bsp->nodes, p1);
BSP_ClusterVis(bsp, mask, leaf1->cluster, vis);
leaf2 = BSP_PointLeaf(bsp->nodes, p2);
if (leaf2->cluster == -1)
return qfalse;
if (!Q_IsBitSet(mask, leaf2->cluster))
return qfalse;
if (!CM_AreasConnected(&sv.cm, leaf1->area, leaf2->area))
return qfalse; // a door blocks it
return qtrue;
}
/*
=================
PF_inPVS
Also checks portalareas so that doors block sight
=================
*/
static qboolean PF_inPVS(vec3_t p1, vec3_t p2)
{
return PF_inVIS(p1, p2, DVIS_PVS);
}
/*
=================
PF_inPHS
Also checks portalareas so that doors block sound
=================
*/
static qboolean PF_inPHS(vec3_t p1, vec3_t p2)
{
return PF_inVIS(p1, p2, DVIS_PHS);
}
/*
==================
PF_StartSound
Each entity can have eight independant sound sources, like voice,
weapon, feet, etc.
If channel & 8, the sound will be sent to everyone, not just
things in the PHS.
FIXME: if entity isn't in PHS, they must be forced to be sent or
have the origin explicitly sent.
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)
Timeofs can range from 0.0 to 0.1 to cause sounds to be started
later in the frame than they normally would.
If origin is NULL, the origin is determined from the entity origin
or the midpoint of the entity box for bmodels.
==================
*/
#define CHECK_PARAMS \
if (volume < 0 || volume > 1.0) \
Com_Error(ERR_DROP, "%s: volume = %f", __func__, volume); \
if (attenuation < 0 || attenuation > 4) \
Com_Error(ERR_DROP, "%s: attenuation = %f", __func__, attenuation); \
if (timeofs < 0 || timeofs > 0.255) \
Com_Error(ERR_DROP, "%s: timeofs = %f", __func__, timeofs); \
if (soundindex < 0 || soundindex >= MAX_SOUNDS) \
Com_Error(ERR_DROP, "%s: soundindex = %d", __func__, soundindex);
static void PF_StartSound(edict_t *edict, int channel,
int soundindex, float volume,
float attenuation, float timeofs)
{
int sendchan;
int flags;
int ent;
vec3_t origin;
client_t *client;
byte mask[VIS_MAX_BYTES];
mleaf_t *leaf;
int area;
player_state_t *ps;
message_packet_t *msg;
int i;
if (!edict)
return;
CHECK_PARAMS
ent = NUM_FOR_EDICT(edict);
if ((g_features->integer & GMF_PROPERINUSE) && !edict->inuse) {
Com_DPrintf("%s: entnum not in use: %d\n", __func__, ent);
return;
}
sendchan = (ent << 3) | (channel & 7);
// always send the entity number for channel overrides
flags = SND_ENT;
if (volume != DEFAULT_SOUND_PACKET_VOLUME)
flags |= SND_VOLUME;
if (attenuation != DEFAULT_SOUND_PACKET_ATTENUATION)
flags |= SND_ATTENUATION;
if (timeofs)
flags |= SND_OFFSET;
// if the sound doesn't attenuate,send it to everyone
// (global radio chatter, voiceovers, etc)
if (attenuation == ATTN_NONE) {
channel |= CHAN_NO_PHS_ADD;
}
FOR_EACH_CLIENT(client) {
// do not send sounds to connecting clients
if (client->state != cs_spawned || client->download || client->nodata) {
continue;
}
// PHS cull this sound
if (!(channel & CHAN_NO_PHS_ADD)) {
// get client viewpos
ps = &client->edict->client->ps;
VectorMA(ps->viewoffset, 0.125f, ps->pmove.origin, origin);
leaf = CM_PointLeaf(&sv.cm, origin);
area = CM_LeafArea(leaf);
if (!CM_AreasConnected(&sv.cm, area, edict->areanum)) {
// doors can legally straddle two areas, so
// we may need to check another one
if (!edict->areanum2 || !CM_AreasConnected(&sv.cm, area, edict->areanum2)) {
continue; // blocked by a door
}
}
BSP_ClusterVis(sv.cm.cache, mask, leaf->cluster, DVIS_PHS);
if (!SV_EdictIsVisible(&sv.cm, edict, mask)) {
continue; // not in PHS
}
}
// use the entity origin unless it is a bmodel
if (edict->solid == SOLID_BSP) {
VectorAvg(edict->mins, edict->maxs, origin);
VectorAdd(edict->s.origin, origin, origin);
} else {
VectorCopy(edict->s.origin, origin);
}
// reliable sounds will always have position explicitly set,
// as no one gurantees reliables to be delivered in time
if (channel & CHAN_RELIABLE) {
MSG_WriteByte(svc_sound);
MSG_WriteByte(flags | SND_POS);
MSG_WriteByte(soundindex);
if (flags & SND_VOLUME)
MSG_WriteByte(volume * 255);
if (flags & SND_ATTENUATION)
MSG_WriteByte(attenuation * 64);
if (flags & SND_OFFSET)
MSG_WriteByte(timeofs * 1000);
MSG_WriteShort(sendchan);
MSG_WritePos(origin);
SV_ClientAddMessage(client, MSG_RELIABLE | MSG_CLEAR);
continue;
}
if (LIST_EMPTY(&client->msg_free_list)) {
Com_WPrintf("%s: %s: out of message slots\n",
__func__, client->name);
continue;
}
// send origin for invisible entities
if (edict->svflags & SVF_NOCLIENT) {
flags |= SND_POS;
}
// default client doesn't know that bmodels have weird origins
if (edict->solid == SOLID_BSP && client->protocol == PROTOCOL_VERSION_DEFAULT) {
flags |= SND_POS;
}
msg = LIST_FIRST(message_packet_t, &client->msg_free_list, entry);
msg->cursize = 0;
msg->flags = flags;
msg->index = soundindex;
msg->volume = volume * 255;
msg->attenuation = attenuation * 64;
msg->timeofs = timeofs * 1000;
msg->sendchan = sendchan;
for (i = 0; i < 3; i++) {
msg->pos[i] = origin[i] * 8;
}
List_Remove(&msg->entry);
List_Append(&client->msg_unreliable_list, &msg->entry);
client->msg_unreliable_bytes += MAX_SOUND_PACKET;
flags &= ~SND_POS;
}
#if USE_MVD_SERVER
SV_MvdStartSound(ent, channel, flags, soundindex,
volume * 255, attenuation * 64, timeofs * 1000);
#endif
}
static void PF_PositionedSound(vec3_t origin, edict_t *entity, int channel,
int soundindex, float volume,
float attenuation, float timeofs)
{
int sendchan;
int flags;
int ent;
if (!origin)
Com_Error(ERR_DROP, "%s: NULL origin", __func__);
CHECK_PARAMS
ent = NUM_FOR_EDICT(entity);
sendchan = (ent << 3) | (channel & 7);
// always send the entity number for channel overrides
flags = SND_ENT | SND_POS;
if (volume != DEFAULT_SOUND_PACKET_VOLUME)
flags |= SND_VOLUME;
if (attenuation != DEFAULT_SOUND_PACKET_ATTENUATION)
flags |= SND_ATTENUATION;
if (timeofs)
flags |= SND_OFFSET;
MSG_WriteByte(svc_sound);
MSG_WriteByte(flags);
MSG_WriteByte(soundindex);
if (flags & SND_VOLUME)
MSG_WriteByte(volume * 255);
if (flags & SND_ATTENUATION)
MSG_WriteByte(attenuation * 64);
if (flags & SND_OFFSET)
MSG_WriteByte(timeofs * 1000);
MSG_WriteShort(sendchan);
MSG_WritePos(origin);
// if the sound doesn't attenuate,send it to everyone
// (global radio chatter, voiceovers, etc)
if (attenuation == ATTN_NONE || (channel & CHAN_NO_PHS_ADD)) {
if (channel & CHAN_RELIABLE) {
SV_Multicast(NULL, MULTICAST_ALL_R);
} else {
SV_Multicast(NULL, MULTICAST_ALL);
}
} else {
if (channel & CHAN_RELIABLE) {
SV_Multicast(origin, MULTICAST_PHS_R);
} else {
SV_Multicast(origin, MULTICAST_PHS);
}
}
}
void PF_Pmove(pmove_t *pm)
{
if (sv_client) {
Pmove(pm, &sv_client->pmp);
} else {
Pmove(pm, &sv_pmp);
}
}
static cvar_t *PF_cvar(const char *name, const char *value, int flags)
{
if (flags & CVAR_EXTENDED_MASK) {
Com_WPrintf("Game attemped to set extended flags on '%s', masked out.\n", name);
flags &= ~CVAR_EXTENDED_MASK;
}
return Cvar_Get(name, value, flags | CVAR_GAME);
}
static void PF_AddCommandString(const char *string)
{
Cbuf_AddText(&cmd_buffer, string);
}
static void PF_SetAreaPortalState(int portalnum, qboolean open)
{
if (!sv.cm.cache) {
Com_Error(ERR_DROP, "%s: no map loaded", __func__);
}
CM_SetAreaPortalState(&sv.cm, portalnum, open);
}
static qboolean PF_AreasConnected(int area1, int area2)
{
if (!sv.cm.cache) {
Com_Error(ERR_DROP, "%s: no map loaded", __func__);
}
return CM_AreasConnected(&sv.cm, area1, area2);
}
static void *PF_TagMalloc(size_t size, unsigned tag)
{
if (tag + TAG_MAX < tag) {
Com_Error(ERR_FATAL, "%s: bad tag", __func__);
}
if (!size) {
return NULL;
}
return memset(Z_TagMalloc(size, tag + TAG_MAX), 0, size);
}
static void PF_FreeTags(unsigned tag)
{
if (tag + TAG_MAX < tag) {
Com_Error(ERR_FATAL, "%s: bad tag", __func__);
}
Z_FreeTags(tag + TAG_MAX);
}
static void PF_DebugGraph(float value, int color)
{
#if (defined _DEBUG) && USE_CLIENT
SCR_DebugGraph(value, color);
#endif
}
//==============================================
static void *game_library;
/*
===============
SV_ShutdownGameProgs
Called when either the entire server is being killed, or
it is changing to a different game directory.
===============
*/
void SV_ShutdownGameProgs(void)
{
if (ge) {
ge->Shutdown();
ge = NULL;
}
if (game_library) {
Sys_FreeLibrary(game_library);
game_library = NULL;
}
Cvar_Set("g_features", "0");
}
static void *SV_LoadLibrary(const char *game)
{
char path[MAX_OSPATH];
size_t len;
len = Q_concat(path, sizeof(path), sys_libdir->string,
PATH_SEP_STRING, game, PATH_SEP_STRING GAMELIB, NULL);
if (len >= sizeof(path)) {
Com_WPrintf("Game library path length exceeded\n");
return NULL;
}
return Sys_LoadLibrary(path, "GetGameAPI", &game_library);
}
/*
===============
SV_InitGameProgs
Init the game subsystem for a new map
===============
*/
void SV_InitGameProgs(void)
{
game_import_t import;
game_export_t *(*entry)(game_import_t *) = NULL;
// unload anything we have now
SV_ShutdownGameProgs();
// for debugging or `proxy' mods
if (sys_forcegamelib->string[0]) {
entry = Sys_LoadLibrary(sys_forcegamelib->string,
"GetGameAPI", &game_library);
}
if (!entry) {
// try game first
if (fs_game->string[0]) {
entry = SV_LoadLibrary(fs_game->string);
}
if (!entry) {
// then try baseq2
entry = SV_LoadLibrary(BASEGAME);
if (!entry) {
Com_Error(ERR_DROP, "Failed to load game library");
}
}
}
// load a new game dll
import.multicast = SV_Multicast;
import.unicast = PF_Unicast;
import.bprintf = PF_bprintf;
import.dprintf = PF_dprintf;
import.cprintf = PF_cprintf;
import.centerprintf = PF_centerprintf;
import.error = PF_error;
import.linkentity = PF_LinkEdict;
import.unlinkentity = PF_UnlinkEdict;
import.BoxEdicts = SV_AreaEdicts;
import.trace = SV_Trace;
import.pointcontents = SV_PointContents;
import.setmodel = PF_setmodel;
import.inPVS = PF_inPVS;
import.inPHS = PF_inPHS;
import.Pmove = PF_Pmove;
import.modelindex = PF_ModelIndex;
import.soundindex = PF_SoundIndex;
import.imageindex = PF_ImageIndex;
import.configstring = PF_configstring;
import.sound = PF_StartSound;
import.positioned_sound = PF_PositionedSound;
import.WriteChar = MSG_WriteChar;
import.WriteByte = MSG_WriteByte;
import.WriteShort = MSG_WriteShort;
import.WriteLong = MSG_WriteLong;
import.WriteFloat = PF_WriteFloat;
import.WriteString = MSG_WriteString;
import.WritePosition = MSG_WritePos;
import.WriteDir = MSG_WriteDir;
import.WriteAngle = MSG_WriteAngle;
import.TagMalloc = PF_TagMalloc;
import.TagFree = Z_Free;
import.FreeTags = PF_FreeTags;
import.cvar = PF_cvar;
import.cvar_set = Cvar_UserSet;
import.cvar_forceset = Cvar_Set;
import.argc = Cmd_Argc;
import.argv = Cmd_Argv;
// original Cmd_Args() did actually return raw arguments
import.args = Cmd_RawArgs;
import.AddCommandString = PF_AddCommandString;
import.DebugGraph = PF_DebugGraph;
import.SetAreaPortalState = PF_SetAreaPortalState;
import.AreasConnected = PF_AreasConnected;
ge = entry(&import);
if (!ge) {
Com_Error(ERR_DROP, "Game DLL returned NULL exports");
}
if (ge->apiversion != GAME_API_VERSION) {
Com_Error(ERR_DROP, "Game DLL is version %d, expected %d",
ge->apiversion, GAME_API_VERSION);
}
// initialize
ge->Init();
// sanitize max_edicts
if (ge->max_edicts <= sv_maxclients->integer || ge->max_edicts > MAX_EDICTS) {
Com_Error(ERR_DROP, "Game DLL returned bad number of max_edicts");
}
}