ref: 7a252eea673a83b82783aac3d3bcc53193c470cf
dir: /cl_parse.c/
// cl_parse.c -- parse a message received from the server
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "quakedef.h"
char *svc_strings[] =
{
"svc_bad",
"svc_nop",
"svc_disconnect",
"svc_updatestat",
"svc_version", // [long] server version
"svc_setview", // [short] entity number
"svc_sound", // <see code>
"svc_time", // [float] server time
"svc_print", // [string] null terminated string
"svc_stufftext", // [string] stuffed into client's console buffer
// the string should be \n terminated
"svc_setangle", // [vec3] set the view angle to this absolute value
"svc_serverinfo", // [long] version
// [string] signon string
// [string]..[0]model cache [string]...[0]sounds cache
// [string]..[0]item cache
"svc_lightstyle", // [byte] [string]
"svc_updatename", // [byte] [string]
"svc_updatefrags", // [byte] [short]
"svc_clientdata", // <shortbits + data>
"svc_stopsound", // <see code>
"svc_updatecolors", // [byte] [byte]
"svc_particle", // [vec3] <variable>
"svc_damage", // [byte] impact [byte] blood [vec3] from
"svc_spawnstatic",
"OBSOLETE svc_spawnbinary",
"svc_spawnbaseline",
"svc_temp_entity", // <variable>
"svc_setpause",
"svc_signonnum",
"svc_centerprint",
"svc_killedmonster",
"svc_foundsecret",
"svc_spawnstaticsound",
"svc_intermission",
"svc_finale", // [string] music [string] text
"svc_cdtrack", // [byte] track [byte] looptrack
"svc_sellscreen",
"svc_cutscene"
};
//=============================================================================
/*
===============
CL_EntityNum
This error checks and tracks the total number of entities
===============
*/
entity_t *CL_EntityNum (int num)
{
if (num >= cl.num_entities)
{
if (num >= MAX_EDICTS)
Host_Error ("CL_EntityNum: %d is an invalid number",num);
while (cl.num_entities<=num)
{
cl_entities[cl.num_entities].colormap = vid.colormap;
cl.num_entities++;
}
}
return &cl_entities[num];
}
/*
==================
CL_ParseStartSoundPacket
==================
*/
void CL_ParseStartSoundPacket(void)
{
vec3_t pos;
int channel, ent;
int sound_num;
int volume;
int field_mask;
float attenuation;
int i;
field_mask = MSG_ReadByte();
if (field_mask & SND_VOLUME)
volume = MSG_ReadByte ();
else
volume = DEFAULT_SOUND_PACKET_VOLUME;
if (field_mask & SND_ATTENUATION)
attenuation = MSG_ReadByte () / 64.0;
else
attenuation = DEFAULT_SOUND_PACKET_ATTENUATION;
channel = MSG_ReadShort ();
sound_num = MSG_ReadByte ();
ent = channel >> 3;
channel &= 7;
if (ent > MAX_EDICTS)
Host_Error ("CL_ParseStartSoundPacket: ent = %d", ent);
for (i=0 ; i<3 ; i++)
pos[i] = MSG_ReadCoord ();
S_StartSound (ent, channel, cl.sound_precache[sound_num], pos, volume/255.0, attenuation);
}
/*
==================
CL_KeepaliveMessage
When the client is taking a long time to load stuff, send keepalive messages
so the server doesn't disconnect.
==================
*/
void CL_KeepaliveMessage (void)
{
float time;
static float lastmsg;
int ret;
sizebuf_t old;
byte olddata[8192];
if (sv.active)
return; // no need if server is local
if (cls.demoplayback)
return;
// read messages from server, should just be nops
old = net_message;
memcpy (olddata, net_message.data, net_message.cursize);
do
{
ret = CL_GetMessage ();
switch (ret)
{
default:
Host_Error ("CL_KeepaliveMessage: CL_GetMessage failed");
case 0:
break; // nothing waiting
case 1:
Host_Error ("CL_KeepaliveMessage: received a message");
break;
case 2:
if (MSG_ReadByte() != svc_nop)
Host_Error ("CL_KeepaliveMessage: datagram wasn't a nop");
break;
}
} while (ret);
net_message = old;
memcpy (net_message.data, olddata, net_message.cursize);
// check time
time = Sys_FloatTime ();
if (time - lastmsg < 5)
return;
lastmsg = time;
// write out a nop
Con_Printf ("--> client to server keepalive\n");
MSG_WriteByte (&cls.message, clc_nop);
NET_SendMessage (cls.netcon, &cls.message);
SZ_Clear (&cls.message);
}
/*
==================
CL_ParseServerInfo
==================
*/
void CL_ParseServerInfo (void)
{
char *str;
int i;
int nummodels, numsounds;
char model_precache[MAX_MODELS][MAX_QPATH];
char sound_precache[MAX_SOUNDS][MAX_QPATH];
Con_DPrintf ("Serverinfo packet received.\n");
//
// wipe the client_state_t struct
//
CL_ClearState ();
// parse protocol version number
i = MSG_ReadLong ();
if (i != PROTOCOL_VERSION)
{
Con_Printf ("Server returned version %d, not %d", i, PROTOCOL_VERSION);
return;
}
// parse maxclients
cl.maxclients = MSG_ReadByte ();
if (cl.maxclients < 1 || cl.maxclients > MAX_SCOREBOARD)
{
Con_Printf("Bad maxclients (%ud) from server\n", cl.maxclients);
return;
}
cl.scores = Hunk_AllocName(cl.maxclients * sizeof *cl.scores, "scores");
// parse gametype
cl.gametype = MSG_ReadByte ();
// parse signon message
str = MSG_ReadString ();
strncpy (cl.levelname, str, sizeof(cl.levelname)-1);
// seperate the printfs so the server message can have a color
Con_Printf("\n\n\35\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\37\n\n");
Con_Printf ("%c%s\n", 2, str);
//
// first we go through and touch all of the precache data that still
// happens to be in the cache, so precaching something else doesn't
// needlessly purge it
//
// precache models
memset(cl.model_precache, 0, sizeof cl.model_precache);
for (nummodels=1 ; ; nummodels++)
{
str = MSG_ReadString ();
if (!str[0])
break;
if (nummodels==MAX_MODELS)
{
Con_Printf ("Server sent too many model precaches\n");
return;
}
strcpy (model_precache[nummodels], str);
Mod_TouchModel (str);
}
// precache sounds
memset(cl.sound_precache, 0, sizeof cl.sound_precache);
for (numsounds=1 ; ; numsounds++)
{
str = MSG_ReadString ();
if (!str[0])
break;
if (numsounds==MAX_SOUNDS)
{
Con_Printf ("Server sent too many sound precaches\n");
return;
}
strcpy (sound_precache[numsounds], str);
S_TouchSound (str);
}
//
// now we try to load everything else until a cache allocation fails
//
for (i=1 ; i<nummodels ; i++)
{
cl.model_precache[i] = Mod_ForName (model_precache[i], false);
if (cl.model_precache[i] == nil)
{
Con_Printf("Model %s not found\n", model_precache[i]);
return;
}
CL_KeepaliveMessage ();
}
S_BeginPrecaching ();
for (i=1 ; i<numsounds ; i++)
{
cl.sound_precache[i] = S_PrecacheSound (sound_precache[i]);
CL_KeepaliveMessage ();
}
S_EndPrecaching ();
// local state
cl_entities[0].model = cl.worldmodel = cl.model_precache[1];
R_NewMap ();
Hunk_Check (); // make sure nothing is hurt
noclip_anglehack = false; // noclip is turned off at start
}
/*
==================
CL_ParseUpdate
Parse an entity update message from the server
If an entities model or origin changes from frame to frame, it must be
relinked. Other attributes can change without relinking.
==================
*/
int bitcounts[16];
void CL_ParseUpdate (int bits)
{
int i;
model_t *model;
int modnum;
qboolean forcelink;
entity_t *ent;
int num;
if (cls.signon == SIGNONS - 1)
{ // first update is the final signon stage
cls.signon = SIGNONS;
CL_SignonReply ();
}
if (bits & U_MOREBITS)
{
i = MSG_ReadByte ();
bits |= (i<<8);
}
if (bits & U_LONGENTITY)
num = MSG_ReadShort ();
else
num = MSG_ReadByte ();
ent = CL_EntityNum (num);
for (i=0 ; i<16 ; i++)
if (bits&(1<<i))
bitcounts[i]++;
if (ent->msgtime != cl.mtime[1])
forcelink = true; // no previous frame to lerp from
else
forcelink = false;
ent->msgtime = cl.mtime[0];
if (bits & U_MODEL)
{
modnum = MSG_ReadByte ();
if (modnum >= MAX_MODELS)
Host_Error ("CL_ParseModel: bad modnum");
}
else
modnum = ent->baseline.modelindex;
model = cl.model_precache[modnum];
if (model != ent->model)
{
ent->model = model;
// automatic animation (torches, etc) can be either all together
// or randomized
if (model)
{
if (model->synctype == ST_RAND)
ent->syncbase = (float)(rand()&0x7fff) / 0x7fff;
else
ent->syncbase = 0.0;
}
else
forcelink = true; // hack to make null model players work
}
if (bits & U_FRAME)
ent->frame = MSG_ReadByte ();
else
ent->frame = ent->baseline.frame;
if (bits & U_COLORMAP)
i = MSG_ReadByte();
else
i = ent->baseline.colormap;
if (!i)
ent->colormap = vid.colormap;
else
{
if (i > cl.maxclients)
Sys_Error ("i >= cl.maxclients");
ent->colormap = cl.scores[i-1].translations;
}
if (bits & U_SKIN)
ent->skinnum = MSG_ReadByte();
else
ent->skinnum = ent->baseline.skin;
if (bits & U_EFFECTS)
ent->effects = MSG_ReadByte();
else
ent->effects = ent->baseline.effects;
// shift the known values for interpolation
VectorCopy (ent->msg_origins[0], ent->msg_origins[1]);
VectorCopy (ent->msg_angles[0], ent->msg_angles[1]);
if (bits & U_ORIGIN1)
ent->msg_origins[0][0] = MSG_ReadCoord ();
else
ent->msg_origins[0][0] = ent->baseline.origin[0];
if (bits & U_ANGLE1)
ent->msg_angles[0][0] = MSG_ReadAngle();
else
ent->msg_angles[0][0] = ent->baseline.angles[0];
if (bits & U_ORIGIN2)
ent->msg_origins[0][1] = MSG_ReadCoord ();
else
ent->msg_origins[0][1] = ent->baseline.origin[1];
if (bits & U_ANGLE2)
ent->msg_angles[0][1] = MSG_ReadAngle();
else
ent->msg_angles[0][1] = ent->baseline.angles[1];
if (bits & U_ORIGIN3)
ent->msg_origins[0][2] = MSG_ReadCoord ();
else
ent->msg_origins[0][2] = ent->baseline.origin[2];
if (bits & U_ANGLE3)
ent->msg_angles[0][2] = MSG_ReadAngle();
else
ent->msg_angles[0][2] = ent->baseline.angles[2];
if ( bits & U_NOLERP )
ent->forcelink = true;
if ( forcelink )
{ // didn't have an update last message
VectorCopy (ent->msg_origins[0], ent->msg_origins[1]);
VectorCopy (ent->msg_origins[0], ent->origin);
VectorCopy (ent->msg_angles[0], ent->msg_angles[1]);
VectorCopy (ent->msg_angles[0], ent->angles);
ent->forcelink = true;
}
}
/*
==================
CL_ParseBaseline
==================
*/
void CL_ParseBaseline (entity_t *ent)
{
int i;
ent->baseline.modelindex = MSG_ReadByte ();
ent->baseline.frame = MSG_ReadByte ();
ent->baseline.colormap = MSG_ReadByte();
ent->baseline.skin = MSG_ReadByte();
for (i=0 ; i<3 ; i++)
{
ent->baseline.origin[i] = MSG_ReadCoord ();
ent->baseline.angles[i] = MSG_ReadAngle ();
}
}
/*
==================
CL_ParseClientdata
Server information pertaining to this client only
==================
*/
void CL_ParseClientdata (int bits)
{
int i, j;
if (bits & SU_VIEWHEIGHT)
cl.viewheight = MSG_ReadChar ();
else
cl.viewheight = DEFAULT_VIEWHEIGHT;
if (bits & SU_IDEALPITCH)
cl.idealpitch = MSG_ReadChar ();
else
cl.idealpitch = 0;
VectorCopy (cl.mvelocity[0], cl.mvelocity[1]);
for (i=0 ; i<3 ; i++)
{
if (bits & (SU_PUNCH1<<i) )
cl.punchangle[i] = MSG_ReadChar();
else
cl.punchangle[i] = 0;
if (bits & (SU_VELOCITY1<<i) )
cl.mvelocity[0][i] = MSG_ReadChar()*16;
else
cl.mvelocity[0][i] = 0;
}
// [always sent] if (bits & SU_ITEMS)
i = MSG_ReadLong ();
if (cl.items != i)
{ // set flash times
Sbar_Changed ();
for (j=0 ; j<32 ; j++)
if ( (i & (1<<j)) && !(cl.items & (1<<j)))
cl.item_gettime[j] = cl.time;
cl.items = i;
}
cl.onground = (bits & SU_ONGROUND) != 0;
cl.inwater = (bits & SU_INWATER) != 0;
if (bits & SU_WEAPONFRAME)
cl.stats[STAT_WEAPONFRAME] = MSG_ReadByte ();
else
cl.stats[STAT_WEAPONFRAME] = 0;
if (bits & SU_ARMOR)
i = MSG_ReadByte ();
else
i = 0;
if (cl.stats[STAT_ARMOR] != i)
{
cl.stats[STAT_ARMOR] = i;
Sbar_Changed ();
}
if (bits & SU_WEAPON)
i = MSG_ReadByte ();
else
i = 0;
if (cl.stats[STAT_WEAPON] != i)
{
cl.stats[STAT_WEAPON] = i;
Sbar_Changed ();
}
i = MSG_ReadShort ();
if (cl.stats[STAT_HEALTH] != i)
{
cl.stats[STAT_HEALTH] = i;
Sbar_Changed ();
}
i = MSG_ReadByte ();
if (cl.stats[STAT_AMMO] != i)
{
cl.stats[STAT_AMMO] = i;
Sbar_Changed ();
}
for (i=0 ; i<4 ; i++)
{
j = MSG_ReadByte ();
if (cl.stats[STAT_SHELLS+i] != j)
{
cl.stats[STAT_SHELLS+i] = j;
Sbar_Changed ();
}
}
i = MSG_ReadByte ();
if (standard_quake)
{
if (cl.stats[STAT_ACTIVEWEAPON] != i)
{
cl.stats[STAT_ACTIVEWEAPON] = i;
Sbar_Changed ();
}
}
else
{
if (cl.stats[STAT_ACTIVEWEAPON] != (1<<i))
{
cl.stats[STAT_ACTIVEWEAPON] = (1<<i);
Sbar_Changed ();
}
}
}
/*
=====================
CL_NewTranslation
=====================
*/
void CL_NewTranslation (int slot)
{
int i, j;
int top, bottom;
byte *dest, *source;
if (slot > cl.maxclients)
Sys_Error ("CL_NewTranslation: slot > cl.maxclients");
dest = cl.scores[slot].translations;
source = vid.colormap;
memcpy(dest, vid.colormap, sizeof cl.scores[slot].translations);
top = cl.scores[slot].colors & 0xf0;
bottom = (cl.scores[slot].colors &15)<<4;
for (i=0 ; i<VID_GRADES ; i++, dest += 256, source+=256)
{
if (top < 128) // the artists made some backwards ranges. sigh.
memcpy (dest + TOP_RANGE, source + top, 16);
else
for (j=0 ; j<16 ; j++)
dest[TOP_RANGE+j] = source[top+15-j];
if (bottom < 128)
memcpy (dest + BOTTOM_RANGE, source + bottom, 16);
else
for (j=0 ; j<16 ; j++)
dest[BOTTOM_RANGE+j] = source[bottom+15-j];
}
}
/*
=====================
CL_ParseStatic
=====================
*/
void CL_ParseStatic (void)
{
entity_t *ent;
int i;
i = cl.num_statics;
if (i >= MAX_STATIC_ENTITIES)
Host_Error ("Too many static entities");
ent = &cl_static_entities[i];
cl.num_statics++;
CL_ParseBaseline (ent);
// copy it to the current state
ent->model = cl.model_precache[ent->baseline.modelindex];
ent->frame = ent->baseline.frame;
ent->colormap = vid.colormap;
ent->skinnum = ent->baseline.skin;
ent->effects = ent->baseline.effects;
VectorCopy (ent->baseline.origin, ent->origin);
VectorCopy (ent->baseline.angles, ent->angles);
R_AddEfrags (ent);
}
/*
===================
CL_ParseStaticSound
===================
*/
void CL_ParseStaticSound (void)
{
vec3_t org;
int sound_num, vol, atten;
int i;
for (i=0 ; i<3 ; i++)
org[i] = MSG_ReadCoord ();
sound_num = MSG_ReadByte ();
vol = MSG_ReadByte ();
atten = MSG_ReadByte ();
S_StaticSound (cl.sound_precache[sound_num], org, vol, atten);
}
#define SHOWNET(x) if(cl_shownet.value==2)Con_Printf ("%3d:%s\n", msg_readcount-1, x);
/*
=====================
CL_ParseServerMessage
=====================
*/
void CL_ParseServerMessage (void)
{
int cmd;
int i;
//
// if recording demos, copy the message out
//
if (cl_shownet.value == 1)
Con_Printf ("%d ",net_message.cursize);
else if (cl_shownet.value == 2)
Con_Printf ("------------------\n");
cl.onground = false; // unless the server says otherwise
//
// parse the message
//
MSG_BeginReading ();
while (1)
{
if (msg_badread)
Host_Error ("CL_ParseServerMessage: Bad server message");
cmd = MSG_ReadByte ();
if (cmd == -1)
{
SHOWNET("END OF MESSAGE");
return; // end of message
}
// if the high bit of the command byte is set, it is a fast update
if (cmd & 128)
{
SHOWNET("fast update");
CL_ParseUpdate (cmd&127);
continue;
}
SHOWNET(svc_strings[cmd]);
// other commands
switch (cmd)
{
default:
Host_Error ("CL_ParseServerMessage: Illegible server message\n");
break;
case svc_nop:
// Con_Printf ("svc_nop\n");
break;
case svc_time:
cl.mtime[1] = cl.mtime[0];
cl.mtime[0] = MSG_ReadFloat ();
break;
case svc_clientdata:
i = MSG_ReadShort ();
CL_ParseClientdata (i);
break;
case svc_version:
i = MSG_ReadLong ();
if (i != PROTOCOL_VERSION)
Host_Error ("CL_ParseServerMessage: Server is protocol %d instead of %d\n", i, PROTOCOL_VERSION);
break;
case svc_disconnect:
Host_EndGame ("Server disconnected\n");
case svc_print:
Con_Printf ("%s", MSG_ReadString ());
break;
case svc_centerprint:
SCR_CenterPrint (MSG_ReadString ());
break;
case svc_stufftext:
Cbuf_AddText (MSG_ReadString ());
break;
case svc_damage:
V_ParseDamage ();
break;
case svc_serverinfo:
CL_ParseServerInfo ();
vid.recalc_refdef = true; // leave intermission full screen
break;
case svc_setangle:
for (i=0 ; i<3 ; i++)
cl.viewangles[i] = MSG_ReadAngle ();
break;
case svc_setview:
cl.viewentity = MSG_ReadShort ();
break;
case svc_lightstyle:
i = MSG_ReadByte ();
if (i >= MAX_LIGHTSTYLES)
Sys_Error ("svc_lightstyle > MAX_LIGHTSTYLES");
strcpy(cl_lightstyle[i].map, MSG_ReadString());
cl_lightstyle[i].length = strlen(cl_lightstyle[i].map);
break;
case svc_sound:
CL_ParseStartSoundPacket();
break;
case svc_stopsound:
i = MSG_ReadShort();
S_StopSound(i>>3, i&7);
break;
case svc_updatename:
Sbar_Changed ();
i = MSG_ReadByte ();
if (i >= cl.maxclients)
Host_Error ("CL_ParseServerMessage: svc_updatename > MAX_SCOREBOARD");
strcpy (cl.scores[i].name, MSG_ReadString ());
break;
case svc_updatefrags:
Sbar_Changed ();
i = MSG_ReadByte ();
if (i >= cl.maxclients)
Host_Error ("CL_ParseServerMessage: svc_updatefrags > MAX_SCOREBOARD");
cl.scores[i].frags = MSG_ReadShort ();
break;
case svc_updatecolors:
Sbar_Changed ();
i = MSG_ReadByte ();
if (i >= cl.maxclients)
Host_Error ("CL_ParseServerMessage: svc_updatecolors > MAX_SCOREBOARD");
cl.scores[i].colors = MSG_ReadByte ();
CL_NewTranslation (i);
break;
case svc_particle:
R_ParseParticleEffect ();
break;
case svc_spawnbaseline:
i = MSG_ReadShort ();
// must use CL_EntityNum() to force cl.num_entities up
CL_ParseBaseline (CL_EntityNum(i));
break;
case svc_spawnstatic:
CL_ParseStatic ();
break;
case svc_temp_entity:
CL_ParseTEnt ();
break;
case svc_setpause:
{
cl.paused = MSG_ReadByte ();
if (cl.paused)
CDAudio_Pause ();
else
CDAudio_Resume ();
}
break;
case svc_signonnum:
i = MSG_ReadByte ();
if (i <= cls.signon)
Host_Error ("Received signon %d when at %d", i, cls.signon);
cls.signon = i;
CL_SignonReply ();
break;
case svc_killedmonster:
cl.stats[STAT_MONSTERS]++;
break;
case svc_foundsecret:
cl.stats[STAT_SECRETS]++;
break;
case svc_updatestat:
i = MSG_ReadByte ();
if (i < 0 || i >= MAX_CL_STATS)
Sys_Error ("svc_updatestat: %d is invalid", i);
cl.stats[i] = MSG_ReadLong ();;
break;
case svc_spawnstaticsound:
CL_ParseStaticSound ();
break;
case svc_cdtrack:
cl.cdtrack = MSG_ReadByte ();
cl.looptrack = MSG_ReadByte ();
if ( (cls.demoplayback || cls.demorecording) && (cls.forcetrack != -1) )
CDAudio_Play ((byte)cls.forcetrack, true);
else
CDAudio_Play ((byte)cl.cdtrack, true);
break;
case svc_intermission:
cl.intermission = 1;
cl.completed_time = cl.time;
vid.recalc_refdef = true; // go to full screen
break;
case svc_finale:
cl.intermission = 2;
cl.completed_time = cl.time;
vid.recalc_refdef = true; // go to full screen
SCR_CenterPrint (MSG_ReadString ());
break;
case svc_cutscene:
cl.intermission = 3;
cl.completed_time = cl.time;
vid.recalc_refdef = true; // go to full screen
SCR_CenterPrint (MSG_ReadString ());
break;
case svc_sellscreen:
Cmd_ExecuteString ("help", src_command);
break;
}
}
}