ref: 4a40fbd789b5308e3904cb73b164f3f8f270c4d0
dir: /sv_main.c/
#include "quakedef.h"
enum {
MAX_SIGNON_SIZE = 32000,
};
server_t sv;
server_static_t svs;
cvar_t developer = {"developer", "0"}; // show extra messages
// we can't just change protocol mid-game, so it's saved here first
static protocol_t *sv_protocol = &protos[PROTO_RMQ];
static char localmodels[MAX_MODELS][8]; // inline model names for precache
static void SV_AllocSignon(void);
static sizebuf_t *
signon_overflow_sb(sizebuf_t *s)
{
int frame;
if(s == sv.signon){
frame = sv.signon_frame;
SV_AllocSignon();
SZ_Write(sv.signon, s->data + frame, s->cursize - frame);
s->cursize = frame;
}
return sv.signon;
}
static void
SV_AllocSignon(void)
{
if(sv.numsignons == 256)
Host_Error("too many signons");
sv.signon = sv.signons[sv.numsignons++] = Hunk_Alloc(sizeof(*sv.signon) + MAX_SIGNON_SIZE);
sv.signon->data = (byte*)(sv.signon + 1);
sv.signon->maxsize = MAX_SIGNON_SIZE;
sv.signon->name = "sv.signon";
sv.signon->overflow_cb = signon_overflow_sb;
sv.signon_frame = 0;
}
void
SV_SignonFrame(void)
{
sv.signon_frame = sv.signon->cursize;
}
//============================================================================
static void
SV_Protocol_f(void)
{
int i, n;
i = Cmd_Argc();
if(i == 1)
Con_Printf("\"sv_protocol\" is \"%d\" (%s)\n", sv_protocol->version, sv_protocol->name);
else if(i == 2){
n = atoi(Cmd_Argv(1));
for(i = 0; i < PROTO_NUM && n != protos[i].version; i++);
if(i >= PROTO_NUM){
Con_Printf("sv_protocol must be of values:");
for(i = 0; i < PROTO_NUM; i++)
Con_Printf(" %d", protos[i].version);
Con_Printf("\n");
}else{
sv_protocol = &protos[i];
if(sv.active)
Con_Printf("changes will take effect on the next game\n");
}
}else
Con_Printf("usage: sv_protocol <protocol>\n");
}
/*
===============
SV_Init
===============
*/
void SV_Init (void)
{
int i;
extern cvar_t sv_maxvelocity;
extern cvar_t sv_gravity;
extern cvar_t sv_nostep;
extern cvar_t sv_friction;
extern cvar_t sv_edgefriction;
extern cvar_t sv_stopspeed;
extern cvar_t sv_maxspeed;
extern cvar_t sv_accelerate;
extern cvar_t sv_idealpitchscale;
extern cvar_t sv_nouse;
extern cvar_t sv_aim;
Cvar_RegisterVariable (&sv_maxvelocity);
Cvar_RegisterVariable (&sv_gravity);
Cvar_RegisterVariable (&sv_friction);
Cvar_RegisterVariable (&sv_edgefriction);
Cvar_RegisterVariable (&sv_stopspeed);
Cvar_RegisterVariable (&sv_maxspeed);
Cvar_RegisterVariable (&sv_accelerate);
Cvar_RegisterVariable (&sv_idealpitchscale);
Cvar_RegisterVariable (&sv_aim);
Cvar_RegisterVariable (&sv_nostep);
Cvar_RegisterVariable (&sv_nouse);
Cvar_RegisterVariable (&developer);
Cmd_AddCommand("sv_protocol", SV_Protocol_f);
for (i=0 ; i<MAX_MODELS ; i++)
sprint (localmodels[i], "*%d", i);
}
/*
=============================================================================
EVENT MESSAGES
=============================================================================
*/
/*
==================
SV_StartParticle
Make sure the event gets sent to all clients
==================
*/
void SV_StartParticle (vec3_t org, vec3_t dir, int color, int count)
{
int i, v;
if(sv.datagram.cursize > MAX_DATAGRAM-(1+3*4+3*1+1+1))
return;
MSG_WriteByte(&sv.datagram, svc_particle);
MSG_WriteVec(*sv.protocol, &sv.datagram, org);
for (i=0 ; i<3 ; i++)
{
v = dir[i]*16;
if (v > 127)
v = 127;
else if (v < -128)
v = -128;
MSG_WriteChar (&sv.datagram, v);
}
MSG_WriteByte (&sv.datagram, count);
MSG_WriteByte (&sv.datagram, color);
}
/*
==================
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, char *sample, int volume,
float attenuation)
{
int sound_num;
int field_mask;
int i;
int ent;
if (sv.datagram.cursize > MAX_DATAGRAM-(1+1+1+1+2+1+2+3*4))
return;
// 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;
}
volume = clamp(volume, 0, 255);
attenuation = clamp(attenuation, 0, 4);
channel = max(channel, 0);
ent = NUM_FOR_EDICT(sv.pr, entity);
if(ent >= sv.protocol->limit_entity || channel >= sv.protocol->limit_channel || sound_num >= sv.protocol->limit_sound)
return;
field_mask = 0;
if(ent >= sv.protocol->large_entity || channel >= sv.protocol->large_channel)
field_mask |= sv.protocol->fl_large_entity | sv.protocol->fl_large_channel;
if(sound_num >= sv.protocol->large_sound)
field_mask |= sv.protocol->fl_large_sound;
if(volume != Spktvol)
field_mask |= SND_VOLUME;
if(attenuation != Spktatt)
field_mask |= SND_ATTENUATION;
// directed messages go only to the entity the are targeted on
MSG_WriteByte(&sv.datagram, svc_sound);
MSG_WriteByte(&sv.datagram, field_mask);
if(field_mask & SND_VOLUME)
MSG_WriteByte(&sv.datagram, volume);
if(field_mask & SND_ATTENUATION)
MSG_WriteByte(&sv.datagram, attenuation*64);
if(field_mask & (sv.protocol->fl_large_entity | sv.protocol->fl_large_channel)){
MSG_WriteShort(&sv.datagram, ent);
MSG_WriteByte(&sv.datagram, channel);
}else{
MSG_WriteShort(&sv.datagram, ent<<3 | channel);
}
if(field_mask & sv.protocol->fl_large_sound)
MSG_WriteShort(&sv.datagram, sound_num);
else
MSG_WriteByte(&sv.datagram, sound_num);
for (i=0 ; i<3 ; i++)
sv.protocol->MSG_WriteCoord (&sv.datagram, entity->v.origin[i]+0.5*(entity->v.mins[i]+entity->v.maxs[i]));
}
/*
==============================================================================
CLIENT SPAWNING
==============================================================================
*/
/*
================
SV_SendServerinfo
Sends the first message from the server to a connected client.
This will be sent on the initial connection and upon each server load.
================
*/
static void
SV_SendServerinfo(client_t *client)
{
char **s;
int n;
char tmp[64];
MSG_WriteByte (&client->message, svc_print);
snprint(tmp, sizeof(tmp), "%c\nqk1 %4.2f SERVER (%ud CRC)\n", 2, VERSION, crcn);
MSG_WriteString (&client->message, tmp);
MSG_WriteByte (&client->message, svc_serverinfo);
MSG_WriteLong (&client->message, sv.protocol->version);
sv.protocol->MSG_WriteProtocolInfo(&client->message, sv.protocol);
MSG_WriteByte (&client->message, svs.maxclients);
MSG_WriteByte (&client->message, (!coop.value && deathmatch.value) ? GAME_DEATHMATCH : GAME_COOP);
MSG_WriteString (&client->message, PR_Str(sv.pr, sv.pr->edicts->v.message));
for (n = 1, s = sv.model_precache+1 ; *s && n < sv.protocol->limit_model ; s++)
MSG_WriteString(&client->message, *s);
MSG_WriteByte(&client->message, 0);
for (n = 1, s = sv.sound_precache+1 ; *s && n < sv.protocol->limit_sound ; s++)
MSG_WriteString(&client->message, *s);
MSG_WriteByte(&client->message, 0);
// send music
MSG_WriteByte (&client->message, svc_cdtrack);
MSG_WriteByte (&client->message, sv.pr->edicts->v.sounds);
MSG_WriteByte (&client->message, sv.pr->edicts->v.sounds);
// set view
MSG_WriteByte (&client->message, svc_setview);
MSG_WriteShort (&client->message, NUM_FOR_EDICT(sv.pr, client->edict));
MSG_WriteByte (&client->message, svc_signonnum);
MSG_WriteByte (&client->message, 1);
client->signon.state = SIGNON_KICK;
client->spawned = false; // need prespawn, spawn, etc
}
/*
================
SV_ConnectClient
Initializes a client_t for a new net connection. This will only be called
once for a player each game, not once for each level change.
================
*/
static void
SV_ConnectClient(int clientnum)
{
int i, edictnum;
float spawn_parms[Nparms];
edict_t *ent;
client_t *client;
struct qsocket_s *netconnection;
client = svs.clients + clientnum;
Con_DPrintf("client %s connected\n", client->netconnection->address);
edictnum = clientnum+1;
ent = EDICT_NUM(sv.pr, edictnum);
// set up the client_t
netconnection = client->netconnection;
if(sv.loadgame)
memmove(spawn_parms, client->spawn_parms, sizeof spawn_parms);
memset(client, 0, sizeof *client);
client->netconnection = netconnection;
strcpy(client->name, "unconnected");
client->active = true;
client->spawned = false;
client->edict = ent;
client->message.data = client->msgbuf;
client->message.maxsize = sizeof client->msgbuf;
client->message.allowoverflow = true; // we can catch it
client->message.name = "client.message";
if(sv.loadgame)
memmove(client->spawn_parms, spawn_parms, sizeof spawn_parms);
else{
// call the progs to get default spawn parms for the new client
PR_ExecuteProgram(sv.pr, sv.pr->global_struct->SetNewParms);
for(i=0; i<Nparms; i++)
client->spawn_parms[i] = (&sv.pr->global_struct->parm1)[i];
}
SV_SendServerinfo(client);
}
/*
===================
SV_CheckForNewClients
===================
*/
void SV_CheckForNewClients (void)
{
struct qsocket_s *ret;
int i;
// check for new connections
while (1)
{
ret = NET_CheckNewConnections ();
if (!ret)
break;
// init a new client structure
for (i=0 ; i<svs.maxclients ; i++)
if (!svs.clients[i].active)
break;
if (i == svs.maxclients)
fatal ("Host_CheckForNewClients: no free clients");
svs.clients[i].netconnection = ret;
SV_ConnectClient (i);
net_activeconnections++;
}
}
/*
===============================================================================
FRAME UPDATES
===============================================================================
*/
/*
==================
SV_ClearDatagram
==================
*/
void SV_ClearDatagram (void)
{
SZ_Clear (&sv.datagram);
}
/*
=============================================================================
The PVS must include a small area around the client to allow head bobbing
or other small motion on the client side. Otherwise, a bob might cause an
entity that should be visible to not show up, especially when the bob
crosses a waterline.
=============================================================================
*/
static int fatbytes;
static byte *fatpvs;
static int fatpvs_size;
static void
SV_AddToFatPVS(vec3_t org, mnode_t *node, model_t *m)
{
int i, sz;
byte *pvs;
mplane_t *plane;
float d;
while (1)
{
// if this is a leaf, accumulate the pvs bits
if (node->contents < 0)
{
if (node->contents != CONTENTS_SOLID)
{
pvs = Mod_LeafPVS ( (mleaf_t *)node, m, &sz);
for (i=0 ; i<fatbytes && i<sz ; i++)
fatpvs[i] |= pvs[i];
}
return;
}
plane = node->plane;
d = DotProduct (org, plane->normal) - plane->dist;
if (d > 8)
node = node->children[0];
else if (d < -8)
node = node->children[1];
else
{ // go down both
SV_AddToFatPVS (org, node->children[0], m);
node = node->children[1];
}
}
}
/*
=============
SV_FatPVS
Calculates a PVS that is the inclusive or of all leafs within 8 pixels of the
given point.
=============
*/
static byte *
SV_FatPVS(vec3_t org, model_t *m)
{
fatbytes = (m->numleafs+31)>>3;
if(fatpvs == nil || fatbytes > fatpvs_size){
fatpvs = realloc(fatpvs, fatbytes);
fatpvs_size = fatbytes;
}
memset(fatpvs, 0, fatbytes);
SV_AddToFatPVS(org, m->nodes, m);
return fatpvs;
}
//=============================================================================
/*
=============
SV_WriteEntitiesToClient
=============
*/
static void
SV_WriteEntitiesToClient(edict_t *clent, sizebuf_t *msg)
{
u32int bits;
int e, i, model, alpha;
eval_t *v;
byte *pvs;
vec3_t org;
float miss;
edict_t *ent;
// find the client's PVS
VectorAdd (clent->v.origin, clent->v.view_ofs, org);
pvs = SV_FatPVS (org, sv.worldmodel);
// send over all entities (excpet the client) that touch the pvs
ent = NEXT_EDICT(sv.pr, sv.pr->edicts);
for (e=1 ; e<sv.pr->num_edicts ; e++, ent = NEXT_EDICT(sv.pr, ent))
{
// ignore if not touching a PV leaf
model = ent->v.modelindex;
v = GetEdictFieldValue(sv.pr, ent, "alpha");
alpha = v ? f2alpha(v->_float) : DEFAULT_ALPHA;
if (ent != clent) // clent is ALWAYS sent
{
if((int)ent->v.effects == EF_NODRAW)
continue;
// ignore ents without visible models
if(!model || !*PR_Str(sv.pr, ent->v.model))
continue;
if(model >= sv.protocol->limit_model)
continue;
if(!SV_FindTouchedLeafs(ent, sv.worldmodel->nodes, pvs))
continue;
if((int)ent->v.effects == 0 && zeroalpha(alpha))
continue;
}
if (msg->cursize + 32 > msg->maxsize){
Con_Printf ("packet overflow\n");
return;
}
// send an update
bits = 0;
for (i=0 ; i<3 ; i++)
{
miss = ent->v.origin[i] - ent->baseline.origin[i];
if ( miss < -0.1 || miss > 0.1 )
bits |= U_ORIGIN1<<i;
}
if (ent->v.angles[0] != ent->baseline.angles[0])
bits |= U_ANGLE1;
if (ent->v.angles[1] != ent->baseline.angles[1])
bits |= U_ANGLE2;
if (ent->v.angles[2] != ent->baseline.angles[2])
bits |= U_ANGLE3;
if (ent->v.movetype == MOVETYPE_STEP)
bits |= U_NOLERP; // don't mess up the step animation
if (ent->v.colormap != ent->baseline.colormap)
bits |= U_COLORMAP;
if (ent->v.skin != ent->baseline.skin)
bits |= U_SKIN;
if (ent->v.frame != ent->baseline.frame)
bits |= U_FRAME;
if (((int)ent->v.effects & 0xff) != (ent->baseline.effects & 0xff))
bits |= U_EFFECTS;
if (model != ent->baseline.modelindex)
bits |= U_MODEL;
if (alpha != ent->baseline.alpha)
bits |= sv.protocol->fl_alpha;
if (e >= 256)
bits |= U_LONGENTITY;
if(bits & U_FRAME){
if(ent->v.frame >= sv.protocol->limit_frame)
bits ^= U_FRAME;
else if(ent->v.frame >= sv.protocol->large_frame)
bits |= sv.protocol->fl_large_frame;
}
if(bits & U_MODEL){
if(model >= sv.protocol->limit_model)
bits ^= U_MODEL;
else if(model >= sv.protocol->large_model)
bits |= sv.protocol->fl_large_model;
}
if(bits >= (1<<8)){
bits |= U_MOREBITS;
if(bits >= (1<<16)){
bits |= U_MOREBITS2;
if(bits >= (1<<24))
bits |= U_MOREBITS3;
}
}
// write the message
MSG_WriteByte (msg, bits | U_SIGNAL);
if (bits & U_MOREBITS){
MSG_WriteByte(msg, bits>>8);
if (bits & U_MOREBITS2){
MSG_WriteByte(msg, bits>>16);
if(bits & U_MOREBITS3)
MSG_WriteByte(msg, bits>>24);
}
}
((bits & U_LONGENTITY) ? MSG_WriteShort : MSG_WriteByte)(msg, e);
if (bits & U_MODEL)
MSG_WriteByte(msg, model);
if (bits & U_FRAME)
MSG_WriteByte(msg, ent->v.frame);
if (bits & U_COLORMAP)
MSG_WriteByte(msg, ent->v.colormap);
if (bits & U_SKIN)
MSG_WriteByte(msg, ent->v.skin);
if (bits & U_EFFECTS)
MSG_WriteByte(msg, ent->v.effects);
if (bits & U_ORIGIN1)
sv.protocol->MSG_WriteCoord(msg, ent->v.origin[0]);
if (bits & U_ANGLE1)
sv.protocol->MSG_WriteAngle(msg, ent->v.angles[0]);
if (bits & U_ORIGIN2)
sv.protocol->MSG_WriteCoord (msg, ent->v.origin[1]);
if (bits & U_ANGLE2)
sv.protocol->MSG_WriteAngle(msg, ent->v.angles[1]);
if (bits & U_ORIGIN3)
sv.protocol->MSG_WriteCoord(msg, ent->v.origin[2]);
if (bits & U_ANGLE3)
sv.protocol->MSG_WriteAngle(msg, ent->v.angles[2]);
if (bits & sv.protocol->fl_alpha)
MSG_WriteByte(msg, alpha);
if (bits & sv.protocol->fl_large_frame)
MSG_WriteByte(msg, (int)ent->v.frame>>8);
if (bits & sv.protocol->fl_large_model)
MSG_WriteByte(msg, model>>8);
}
}
/*
=============
SV_CleanupEnts
=============
*/
static void
SV_CleanupEnts(void)
{
int e;
edict_t *ent;
ent = NEXT_EDICT(sv.pr, sv.pr->edicts);
for (e=1 ; e<sv.pr->num_edicts ; e++, ent = NEXT_EDICT(sv.pr, ent))
{
ent->v.effects = (int)ent->v.effects & ~EF_MUZZLEFLASH;
}
}
/*
==================
SV_WriteClientdataToMessage
==================
*/
void SV_WriteClientdataToMessage (edict_t *ent, sizebuf_t *msg)
{
u32int bits;
int i;
edict_t *other;
int items, weaponmodel;
eval_t *val;
// send a damage message
if (ent->v.dmg_take || ent->v.dmg_save)
{
if(msg->cursize + 3+3*4 > msg->maxsize){
Con_Printf ("packet overflow\n");
return;
}
other = PROG_TO_EDICT(sv.pr, 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++)
sv.protocol->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;
}
// send the current viewpos offset from the view entity
SV_SetIdealPitch (); // how much to look up / down ideally
// a fixangle might get lost in a dropped packet. Oh well.
if(ent->v.fixangle ){
if(msg->cursize + 1+3*2 > msg->maxsize){
Con_Printf ("packet overflow\n");
return;
}
MSG_WriteByte (msg, svc_setangle);
for (i=0 ; i < 3 ; i++)
sv.protocol->MSG_WriteAngle (msg, ent->v.angles[i]);
ent->v.fixangle = 0;
}
if(msg->cursize + 64 > msg->maxsize){
Con_Printf("packet overflow\n");
return;
}
bits = SU_ITEMS | SU_WEAPON;
if (ent->v.view_ofs[2] != DEFAULT_VIEWHEIGHT)
bits |= SU_VIEWHEIGHT;
if (ent->v.idealpitch)
bits |= SU_IDEALPITCH;
// stuff the sigil bits into the high bits of items for sbar, or else
// mix in items2
val = GetEdictFieldValue(sv.pr, ent, "items2");
items = (int)ent->v.items | (val ? ((int)val->_float << 23) : ((int)sv.pr->global_struct->serverflags << 28));
weaponmodel = SV_ModelIndex(PR_Str(sv.pr, ent->v.weaponmodel));
if ((int)ent->v.flags & FL_ONGROUND)
bits |= SU_ONGROUND;
if (ent->v.waterlevel >= 2)
bits |= SU_INWATER;
for (i=0 ; i<3 ; i++)
{
if (ent->v.punchangle[i])
bits |= SU_PUNCH1<<i;
if (ent->v.velocity[i])
bits |= SU_VELOCITY1<<i;
}
if (bits & SU_WEAPON){
if(weaponmodel >= sv.protocol->limit_model)
bits ^= SU_WEAPON; // yikes.
else if(weaponmodel >= sv.protocol->large_model)
bits |= sv.protocol->fl_large_weaponmodel;
if(!defalpha(ent->alpha))
bits |= sv.protocol->fl_weapon_alpha;
}
if (ent->v.weaponframe){
bits |= SU_WEAPONFRAME;
if((int)ent->v.weaponframe >= sv.protocol->limit_frame)
bits ^= SU_WEAPONFRAME;
else if((int)ent->v.weaponframe >= sv.protocol->large_frame)
bits |= sv.protocol->fl_large_weaponframe;
}
if (ent->v.armorvalue)
bits |= SU_ARMOR;
if(bits >= (1<<16)){
bits |= SU_MOREBITS;
if(bits >= (1<<24))
bits |= SU_MOREBITS2;
}
// send the data
MSG_WriteByte (msg, svc_clientdata);
MSG_WriteShort (msg, bits);
if(bits & SU_MOREBITS){
MSG_WriteByte(msg, bits>>16);
if(bits & SU_MOREBITS2)
MSG_WriteByte(msg, bits>>24);
}
if (bits & SU_VIEWHEIGHT)
MSG_WriteChar (msg, ent->v.view_ofs[2]);
if (bits & SU_IDEALPITCH)
MSG_WriteChar (msg, ent->v.idealpitch);
for (i=0 ; i<3 ; i++)
{
if (bits & (SU_PUNCH1<<i))
MSG_WriteChar (msg, ent->v.punchangle[i]);
if (bits & (SU_VELOCITY1<<i))
MSG_WriteChar (msg, ent->v.velocity[i]/16);
}
// [always sent] if (bits & SU_ITEMS)
MSG_WriteLong (msg, items);
if (bits & SU_WEAPONFRAME)
MSG_WriteByte (msg, ent->v.weaponframe);
if (bits & SU_ARMOR)
MSG_WriteByte (msg, ent->v.armorvalue);
if (bits & SU_WEAPON)
MSG_WriteByte (msg, weaponmodel);
MSG_WriteShort (msg, ent->v.health);
MSG_WriteByte (msg, ent->v.currentammo);
MSG_WriteByte (msg, ent->v.ammo_shells);
MSG_WriteByte (msg, ent->v.ammo_nails);
MSG_WriteByte (msg, ent->v.ammo_rockets);
MSG_WriteByte (msg, ent->v.ammo_cells);
if (standard_quake)
{
MSG_WriteByte (msg, ent->v.weapon);
}
else
{
for(i=0;i<32;i++)
{
if ( ((int)ent->v.weapon) & (1<<i) )
{
MSG_WriteByte (msg, i);
break;
}
}
}
if(bits & sv.protocol->fl_large_weaponmodel)
MSG_WriteByte(msg, weaponmodel>>8);
if(bits & sv.protocol->fl_large_weaponframe)
MSG_WriteByte(msg, (int)ent->v.weaponframe>>8);
if(bits & sv.protocol->fl_weapon_alpha)
MSG_WriteByte(msg, ent->alpha);
}
/*
=======================
SV_SendClientDatagram
=======================
*/
static bool
SV_SendClientDatagram(client_t *client)
{
static byte buf[MAX_DATAGRAM_LOCAL];
sizebuf_t msg;
msg.data = buf;
// allow big messages locally, but otherwise (real world) we're forced to use 1400 at most
msg.maxsize = client->netconnection->local ? MAX_DATAGRAM_LOCAL : MAX_DATAGRAM;
msg.cursize = 0;
msg.name = "client datagram";
MSG_WriteByte (&msg, svc_time);
MSG_WriteFloat (&msg, sv.time);
// add the client specific data to the datagram
SV_WriteClientdataToMessage (client->edict, &msg);
SV_WriteEntitiesToClient (client->edict, &msg);
// copy the server datagram if there is space
if (msg.cursize + sv.datagram.cursize < msg.maxsize)
SZ_Write (&msg, sv.datagram.data, sv.datagram.cursize);
// send the datagram
if (NET_SendUnreliableMessage (client->netconnection, &msg) == -1)
{
SV_DropClient (true);// if the message couldn't send, kick off
return false;
}
return true;
}
/*
=======================
SV_UpdateToReliableMessages
=======================
*/
static void
SV_UpdateToReliableMessages(void)
{
int i, j;
client_t *client;
// check for changes to be sent over the reliable streams
for (i=0, host_client = svs.clients ; i<svs.maxclients ; i++, host_client++)
{
if (host_client->old_frags != host_client->edict->v.frags)
{
for (j=0, client = svs.clients ; j<svs.maxclients ; j++, client++)
{
if (!client->active)
continue;
MSG_WriteByte (&client->message, svc_updatefrags);
MSG_WriteByte (&client->message, i);
MSG_WriteShort (&client->message, host_client->edict->v.frags);
}
host_client->old_frags = host_client->edict->v.frags;
}
}
for (j=0, client = svs.clients ; j<svs.maxclients ; j++, client++)
{
if (!client->active)
continue;
SZ_Write (&client->message, sv.reliable_datagram.data, sv.reliable_datagram.cursize);
}
SZ_Clear (&sv.reliable_datagram);
}
/*
=======================
SV_SendNop
Send a nop message without trashing or sending the accumulated client
message buffer
=======================
*/
static void
SV_SendNop(client_t *client)
{
sizebuf_t msg;
byte buf[4];
msg.data = buf;
msg.maxsize = sizeof buf;
msg.cursize = 0;
msg.name = "nop";
MSG_WriteChar (&msg, svc_nop);
if (NET_SendUnreliableMessage (client->netconnection, &msg) == -1)
SV_DropClient (true); // if the message couldn't send, kick off
client->last_message = realtime;
}
/*
=======================
SV_SendClientMessages
=======================
*/
void SV_SendClientMessages (void)
{
int i;
sizebuf_t *s;
// update frags, names, etc
SV_UpdateToReliableMessages ();
// build individual updates
for (i=0, host_client = svs.clients ; i<svs.maxclients ; i++, host_client++)
{
if (!host_client->active)
continue;
if (host_client->spawned)
{
if (!SV_SendClientDatagram (host_client))
continue;
}
else
{
// the player isn't totally in the game yet
// send small keepalive messages if too much time has passed
// send a full message when the next signon stage has been requested
// some other message data (name changes, etc) may accumulate
// between signon stages
if(host_client->signon.state == SIGNON_INIT){
if(realtime - host_client->last_message > 5)
SV_SendNop (host_client);
continue; // don't send out non-signon messages
}
if(host_client->signon.state == SIGNON_SENDING){
if(host_client->signon.id < sv.numsignons){
s = sv.signons[host_client->signon.id];
if(host_client->message.cursize+s->cursize <= host_client->message.maxsize){
SZ_Write(&host_client->message, s->data, s->cursize);
host_client->signon.id++;
}
}
if(host_client->signon.id == sv.numsignons)
host_client->signon.state = SIGNON_DONE;
}
if(host_client->signon.state == SIGNON_DONE && host_client->message.cursize+2 < host_client->message.maxsize){
MSG_WriteByte(&host_client->message, svc_signonnum);
MSG_WriteByte(&host_client->message, 2);
host_client->signon.state = SIGNON_KICK;
}
}
// check for an overflowed message. Should only happen
// on a very fucked up connection that backs up a lot, then
// changes level
if (host_client->message.overflowed)
{
SV_DropClient (true);
host_client->message.overflowed = false;
continue;
}
if (host_client->message.cursize || host_client->dropasap)
{
if (!NET_CanSendMessage (host_client->netconnection))
{
//I_Printf ("can't write\n");
continue;
}
if (host_client->dropasap)
SV_DropClient (false); // went to another level
else
{
if(NET_SendMessage(host_client->netconnection, &host_client->message) < 0)
SV_DropClient(true); // if the message couldn't send, kick off
SZ_Clear(&host_client->message);
host_client->last_message = realtime;
if(host_client->signon.state == SIGNON_KICK)
host_client->signon.state = SIGNON_INIT;
}
}
}
// clear muzzle flashes
SV_CleanupEnts ();
}
/*
==============================================================================
SERVER SPAWNING
==============================================================================
*/
/*
================
SV_ModelIndex
================
*/
int SV_ModelIndex (char *name)
{
int i;
if (!name || !name[0])
return 0;
for (i=0 ; i<MAX_MODELS && sv.model_precache[i] ; i++)
if (!strcmp(sv.model_precache[i], name))
return i;
if (i==MAX_MODELS || !sv.model_precache[i])
fatal ("SV_ModelIndex: model %s not precached", name);
return i;
}
/*
================
SV_CreateBaseline
================
*/
static void
SV_CreateBaseline(void)
{
u32int bits;
int i;
edict_t *svent;
int entnum;
for (entnum = 0; entnum < sv.pr->num_edicts ; entnum++)
{
// get the current server version
svent = EDICT_NUM(sv.pr, entnum);
if (svent->free)
continue;
if (entnum > svs.maxclients && !svent->v.modelindex)
continue;
// create entity baseline
VectorCopy (svent->v.origin, svent->baseline.origin);
VectorCopy (svent->v.angles, svent->baseline.angles);
svent->baseline.frame = svent->v.frame;
svent->baseline.skin = svent->v.skin;
if (entnum > 0 && entnum <= svs.maxclients)
{
svent->baseline.colormap = entnum;
svent->baseline.modelindex = SV_ModelIndex("progs/player.mdl");
svent->baseline.alpha = DEFAULT_ALPHA;
}
else
{
svent->baseline.colormap = 0;
svent->baseline.modelindex = SV_ModelIndex(PR_Str(sv.pr, svent->v.model));
svent->baseline.alpha = svent->alpha;
}
bits = 0;
if(svent->baseline.modelindex >= sv.protocol->limit_model)
svent->baseline.modelindex = 0; // yikes.
else if(svent->baseline.modelindex >= sv.protocol->large_model)
bits |= sv.protocol->fl_large_baseline_model;
if(svent->baseline.frame >= sv.protocol->limit_frame)
svent->baseline.frame = 0; // yikes.
else if(svent->baseline.frame >= sv.protocol->large_frame)
bits |= sv.protocol->fl_large_baseline_frame;
if(!defalpha(svent->baseline.alpha))
bits |= sv.protocol->fl_baseline_alpha;
if(((int)svent->baseline.effects & 0xff) != 0)
bits |= sv.protocol->fl_baseline_effects;
// add to the message
SV_SignonFrame();
MSG_WriteByte(sv.signon, bits ? svc_spawnbaseline2 : svc_spawnbaseline);
MSG_WriteShort(sv.signon, entnum);
if(bits != 0)
MSG_WriteByte(sv.signon, bits);
((bits & sv.protocol->fl_large_baseline_model) ? MSG_WriteShort : MSG_WriteByte)
(sv.signon, svent->baseline.modelindex);
((bits & sv.protocol->fl_large_baseline_frame) ? MSG_WriteShort : MSG_WriteByte)
(sv.signon, svent->baseline.frame);
MSG_WriteByte(sv.signon, svent->baseline.colormap);
MSG_WriteByte(sv.signon, svent->baseline.skin);
for(i = 0; i < 3; i++){
sv.protocol->MSG_WriteCoord(sv.signon, svent->baseline.origin[i]);
sv.protocol->MSG_WriteAngle(sv.signon, svent->baseline.angles[i]);
}
if(bits & sv.protocol->fl_baseline_alpha)
MSG_WriteByte(sv.signon, svent->baseline.alpha);
if(bits & sv.protocol->fl_baseline_effects)
MSG_WriteByte(sv.signon, svent->baseline.effects);
}
}
/*
================
SV_SendReconnect
Tell all the clients that the server is changing levels
================
*/
static void
SV_SendReconnect(void)
{
byte data[128];
sizebuf_t msg;
msg.data = data;
msg.cursize = 0;
msg.maxsize = sizeof data;
msg.name = "reconnect";
MSG_WriteChar (&msg, svc_stufftext);
MSG_WriteString (&msg, "reconnect\n");
NET_SendToAll (&msg, 5);
if (cls.state != ca_dedicated)
Cmd_ExecuteString ("reconnect\n", src_command);
}
/*
================
SV_SaveSpawnparms
Grabs the current state of each client for saving across the
transition to another level
================
*/
void SV_SaveSpawnparms (void)
{
int i, j;
svs.serverflags = sv.pr->global_struct->serverflags;
for (i=0, host_client = svs.clients ; i<svs.maxclients ; i++, host_client++)
{
if (!host_client->active)
continue;
// call the progs to get default spawn parms for the new client
sv.pr->global_struct->self = EDICT_TO_PROG(sv.pr, host_client->edict);
PR_ExecuteProgram(sv.pr, sv.pr->global_struct->SetChangeParms);
for (j=0 ; j<Nparms ; j++)
host_client->spawn_parms[j] = (&sv.pr->global_struct->parm1)[j];
}
}
/*
================
SV_SpawnServer
This is called at the start of each level
================
*/
extern float scr_centertime_off;
void SV_SpawnServer (char *server)
{
edict_t *ent;
static char dummy[8] = {0};
int i;
// let's not have any servers with no name
if (hostname.string[0] == 0)
setcvar ("hostname", "UNNAMED");
scr_centertime_off = 0;
Con_DPrintf("SV_SpawnServer: %s\n", server);
svs.changelevel_issued = false; // now safe to issue another
// tell all connected clients that we are going to a new level
if (sv.active)
{
SV_SendReconnect ();
}
// make cvars consistant
if (coop.value)
setcvarv ("deathmatch", 0);
current_skill = (int)(skill.value + 0.5);
if (current_skill < 0)
current_skill = 0;
if (current_skill > 3)
current_skill = 3;
setcvarv ("skill", (float)current_skill);
// set up the new server
Host_ClearMemory ();
memset(&sv, 0, sizeof sv);
strcpy(sv.name, server);
sv.protocol = sv_protocol;
// load progs to get entity field count
sv.pr = PR_LoadProgs("progs.dat");
// allocate server memory
sv.datagram.maxsize = sizeof sv.datagram_buf;
sv.datagram.cursize = 0;
sv.datagram.data = sv.datagram_buf;
sv.datagram.name = "sv.datagram";
sv.reliable_datagram.maxsize = sizeof sv.reliable_datagram_buf;
sv.reliable_datagram.cursize = 0;
sv.reliable_datagram.data = sv.reliable_datagram_buf;
sv.reliable_datagram.name = "sv.reliable_datagram";
SV_AllocSignon();
// leave slots at start for clients only
sv.pr->num_edicts = svs.maxclients+1;
for (i=0 ; i<svs.maxclients ; i++)
{
ent = EDICT_NUM(sv.pr, i+1);
svs.clients[i].edict = ent;
}
sv.state = ss_loading;
sv.paused = false;
sv.time = 1.0;
strcpy (sv.name, server);
sprint (sv.modelname,"maps/%s.bsp", server);
sv.worldmodel = Mod_ForName (sv.modelname, false);
if (!sv.worldmodel)
{
Con_Printf ("Couldn't spawn server %s\n", sv.modelname);
sv.active = false;
return;
}
sv.models[1] = sv.worldmodel;
// clear world interaction links
SV_ClearWorld ();
sv.sound_precache[0] = dummy;
sv.model_precache[0] = dummy;
sv.model_precache[1] = sv.modelname;
for (i=1 ; i<sv.worldmodel->numsubmodels ; i++)
{
sv.model_precache[1+i] = localmodels[i];
sv.models[i+1] = Mod_ForName (localmodels[i], false);
}
// load the rest of the entities
ent = EDICT_NUM(sv.pr, 0);
memset(&ent->v, 0, sv.pr->entityfields * 4);
ent->free = false;
ent->v.model = PR_SetStr(sv.pr, sv.worldmodel->name);
ent->v.modelindex = 1; // world model
ent->v.solid = SOLID_BSP;
ent->v.movetype = MOVETYPE_PUSH;
if (coop.value)
sv.pr->global_struct->coop = coop.value;
else
sv.pr->global_struct->deathmatch = deathmatch.value;
sv.pr->global_struct->mapname = PR_SetStr(sv.pr, sv.name);
// serverflags are for cross level information (sigils)
sv.pr->global_struct->serverflags = svs.serverflags;
ED_LoadFromFile(sv.pr, sv.worldmodel->entities);
sv.active = true;
// all setup is completed, any further precache statements are errors
sv.state = ss_active;
// run two frames to allow everything to settle
host_frametime = 0.1;
SV_Physics ();
SV_Physics ();
// create a baseline for more efficient communications
SV_CreateBaseline ();
UDP_Listen(svs.maxclients > 1);
// send serverinfo to all connected clients
for (i=0,host_client = svs.clients ; i<svs.maxclients ; i++, host_client++)
if (host_client->active)
SV_SendServerinfo (host_client);
IN_Grabm(1);
Con_DPrintf("server spawned\n");
}