ref: b06965ffd80e9f3c53e28fec79c1aedf9618f7c7
dir: /cl_parse.c/
#include "quakedef.h" static const 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", "svc_spawnbaseline2", "svc_spawnstatic2", "svc_spawnstaticsound2", }; //============================================================================= /* =============== CL_EntityNum This error checks and tracks the total number of entities =============== */ static 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 ================== */ static void CL_ParseStartSoundPacket(void) { vec3_t pos; int channel, ent; int sound_num; int volume; int field_mask; float attenuation; field_mask = MSG_ReadByte(); volume = (field_mask & SND_VOLUME) ? MSG_ReadByte() : Spktvol; attenuation = (field_mask & SND_ATTENUATION) ? MSG_ReadByte()/64.0 : Spktatt; if(field_mask & (cl.protocol.fl_large_entity | cl.protocol.fl_large_channel)){ ent = MSG_ReadShort(); channel = MSG_ReadByte(); }else{ channel = MSG_ReadShort (); ent = channel >> 3; channel &= 7; } sound_num = (field_mask & cl.protocol.fl_large_sound) ? MSG_ReadShort() : MSG_ReadByte(); if(ent >= MAX_EDICTS) Host_Error("CL_ParseStartSoundPacket: ent = %d", ent); MSG_ReadVec(cl.protocol, pos); startsfx (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. ================== */ static void CL_KeepaliveMessage (void) { float time; static float lastmsg; int ret; sizebuf_t old; static byte olddata[NET_MAXMESSAGE]; 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 = readcl (); switch (ret) { default: Host_Error ("CL_KeepaliveMessage: readcl 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 = dtime (); 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 ================== */ static void CL_ParseServerInfo (void) { char *str; void *p; int i, n; int nummodels, numsounds; static char model_precache[MAX_MODELS][Npath]; static char sound_precache[MAX_SOUNDS][Npath]; Con_DPrintf("CL_ParseServerInfo: parsing serverinfo pkt...\n"); CL_ClearState (); // parse protocol version number i = MSG_ReadLong (); p = nil; for(n = 0; n < nelem(protos); n++){ if(protos[n].version == i){ p = &protos[n]; break; } } if(p == nil){ Con_Printf ("Server returned unknown protocol version %d", i); return; } memmove(&cl.protocol, p, sizeof(cl.protocol)); cl.protocol.MSG_ReadProtocolInfo(&cl.protocol); // parse maxclients cl.maxclients = MSG_ReadByte (); if (cl.maxclients < 1 || cl.maxclients > MAX_SCOREBOARD) { Con_Printf("Bad maxclients (%d) from server\n", cl.maxclients); return; } cl.scores = Hunk_Alloc(cl.maxclients * sizeof *cl.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); sfxbegin(); 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); touchsfx (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 (); } for (i=1 ; i<numsounds ; i++) { cl.sound_precache[i] = precachesfx (sound_precache[i]); CL_KeepaliveMessage (); } // local state cl_entities[0].model = cl.worldmodel = cl.model_precache[1]; R_NewMap(); V_NewMap(); 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. ================== */ static int bitcounts[16]; static void CL_ParseUpdate (int bits) { int i; model_t *model; int modnum; bool forcelink; entity_t *ent; int num, skin, colormap; if (cls.signon == SIGNONS - 1) { // first update is the final signon stage cls.signon = SIGNONS; CL_SignonReply (); } if (bits & U_MOREBITS){ bits |= MSG_ReadByte()<<8; if(bits & U_MOREBITS2){ bits |= MSG_ReadByte()<<16; if(bits & U_MOREBITS3) bits |= MSG_ReadByte()<<24; } if(bits == -1) Host_Error("CL_ParseUpdate: unexpected EOF while reading extended bits"); } num = (bits & U_LONGENTITY) ? MSG_ReadShort() : MSG_ReadByte (); ent = CL_EntityNum (num); for (i=0 ; i<16 ; i++) if (bits&(1<<i)) bitcounts[i]++; forcelink = ent->msgtime != cl.mtime[1]; // no previous frame to lerp from ent->msgtime = cl.mtime[0]; // shift the known values for interpolation VectorCopy (ent->msg_origins[0], ent->msg_origins[1]); VectorCopy (ent->msg_angles[0], ent->msg_angles[1]); modnum = (bits & U_MODEL) ? MSG_ReadByte() : ent->baseline.modelindex; ent->frame = (bits & U_FRAME) ? MSG_ReadByte() : ent->baseline.frame; colormap = (bits & U_COLORMAP) ? MSG_ReadByte() : ent->baseline.colormap; skin = (bits & U_SKIN) ? MSG_ReadByte() : ent->baseline.skin; ent->effects = (bits & U_EFFECTS) ? MSG_ReadByte() : ent->baseline.effects; if(colormap == 0) ent->colormap = vid.colormap; else if(colormap > cl.maxclients) fatal("colormap > cl.maxclients"); else ent->colormap = cl.scores[colormap-1].translations; if(skin != ent->skinnum && num >= 0 && num <= cl.maxclients){ // FIXME(sigrid): update the skin ent->skinnum = skin; } ent->msg_origins[0][0] = (bits & U_ORIGIN1) ? cl.protocol.MSG_ReadCoord() : ent->baseline.origin[0]; ent->msg_angles[0][0] = (bits & U_ANGLE1) ? cl.protocol.MSG_ReadAngle() : ent->baseline.angles[0]; ent->msg_origins[0][1] = (bits & U_ORIGIN2) ? cl.protocol.MSG_ReadCoord() : ent->baseline.origin[1]; ent->msg_angles[0][1] = (bits & U_ANGLE2) ? cl.protocol.MSG_ReadAngle() : ent->baseline.angles[1]; ent->msg_origins[0][2] = (bits & U_ORIGIN3) ? cl.protocol.MSG_ReadCoord() : ent->baseline.origin[2]; ent->msg_angles[0][2] = (bits & U_ANGLE3) ? cl.protocol.MSG_ReadAngle() : ent->baseline.angles[2]; ent->alpha = (bits & cl.protocol.fl_alpha) ? MSG_ReadByte() : ent->baseline.alpha; if(bits & U_NOLERP) ent->forcelink = true; if(bits & cl.protocol.fl_large_frame) ent->frame |= MSG_ReadByte()<<8; if(bits & cl.protocol.fl_large_model) modnum |= MSG_ReadByte()<<8; if(modnum < 0 || modnum >= MAX_MODELS) Host_Error("CL_ParseModel: bad modnum: %d (bits 0x%08ux)", modnum, bits); 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 ( 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 ================== */ static void CL_ParseBaseline (int withbits, entity_t *ent) { int i, bits; bits = withbits ? MSG_ReadByte() : 0; ent->baseline.modelindex = (bits & cl.protocol.fl_large_baseline_model) ? MSG_ReadShort() : MSG_ReadByte(); ent->baseline.frame = (bits & cl.protocol.fl_large_baseline_frame) ? MSG_ReadShort() : MSG_ReadByte(); ent->baseline.colormap = MSG_ReadByte(); ent->baseline.skin = MSG_ReadByte(); for (i=0 ; i<3 ; i++) { ent->baseline.origin[i] = cl.protocol.MSG_ReadCoord (); ent->baseline.angles[i] = cl.protocol.MSG_ReadAngle (); } ent->baseline.alpha = (bits & cl.protocol.fl_baseline_alpha) ? MSG_ReadByte() : DEFAULT_ALPHA; ent->baseline.effects = (bits & cl.protocol.fl_baseline_effects) ? MSG_ReadByte() : 0; } /* ================== CL_ParseClientdata Server information pertaining to this client only ================== */ static void CL_ParseClientdata (unsigned int bits) { int i, j, weaponmodel; if(bits & SU_MOREBITS){ bits |= MSG_ReadByte() << 16; if(bits & SU_MOREBITS2) bits |= MSG_ReadByte() << 24; } cl.viewheight = (bits & SU_VIEWHEIGHT) ? MSG_ReadChar() : DEFAULT_VIEWHEIGHT; cl.idealpitch = (bits & SU_IDEALPITCH) ? MSG_ReadChar() : 0; VectorCopy(cl.mvelocity[0], cl.mvelocity[1]); for (i=0 ; i<3 ; i++) { cl.punchangle[i] = (bits & (SU_PUNCH1<<i)) ? MSG_ReadChar() : 0; cl.mvelocity[0][i] = (bits & (SU_VELOCITY1<<i)) ? MSG_ReadChar()*16 : 0; } i = (bits & SU_ITEMS) ? MSG_ReadLong() : cl.items; 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; cl.stats[STAT_WEAPONFRAME] = (bits & SU_WEAPONFRAME) ? MSG_ReadByte() : 0; i = (bits & SU_ARMOR) ? MSG_ReadByte() : 0; if(cl.stats[STAT_ARMOR] != i){ cl.stats[STAT_ARMOR] = i; Sbar_Changed (); } weaponmodel = (bits & SU_WEAPON) ? MSG_ReadByte() : 0; 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(); } if(bits & cl.protocol.fl_large_weaponmodel) weaponmodel |= MSG_ReadByte() << 8; if(cl.stats[STAT_WEAPON] != weaponmodel){ cl.stats[STAT_WEAPON] = weaponmodel; Sbar_Changed(); } if(bits & cl.protocol.fl_large_weaponframe) cl.stats[STAT_WEAPONFRAME] |= MSG_ReadByte() << 8; cl.viewent.alpha = (bits & cl.protocol.fl_weapon_alpha) ? MSG_ReadByte() : DEFAULT_ALPHA; if(cl.viewent.model != cl.model_precache[cl.stats[STAT_WEAPON]]){ // FIXME(sigrid) - reset lerp } } /* ===================== CL_NewTranslation ===================== */ static void CL_NewTranslation (int slot) { int i, j; int top, bottom; pixel_t *dest, *source; if (slot > cl.maxclients) fatal ("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*sizeof(pixel_t)); 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*sizeof(pixel_t)); else for (j=0 ; j<16 ; j++) dest[BOTTOM_RANGE+j] = source[bottom+15-j]; } } /* ===================== CL_ParseStatic ===================== */ static void CL_ParseStatic (int withbits) { 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(withbits, ent); // copy it to the current state ent->model = cl.model_precache[ent->baseline.modelindex]; ent->alpha = ent->baseline.alpha; 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 =================== */ static void CL_ParseStaticSound (int large_sound) { vec3_t org; int sound_num, vol, atten; MSG_ReadVec(cl.protocol, org); sound_num = large_sound ? MSG_ReadShort() : MSG_ReadByte(); vol = MSG_ReadByte(); atten = MSG_ReadByte(); staticsfx(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, i, n; protocol_t *p; // 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 < 0) { 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 & U_SIGNAL) { SHOWNET("fast update"); CL_ParseUpdate (cmd); continue; } SHOWNET(svc_strings[cmd]); // other commands switch (cmd) { default: Host_Error ("CL_ParseServerMessage: Illegible server message (cmd %d)\n", cmd); break; case svc_nop: break; case svc_time: cl.mtime[1] = cl.mtime[0]; cl.mtime[0] = MSG_ReadFloat (); break; case svc_clientdata: CL_ParseClientdata((ushort)MSG_ReadShort()); break; case svc_version: i = MSG_ReadLong(); for(p = nil, n = 0; n < nelem(protos); n++){ if(protos[n].version == i){ p = &protos[n]; break; } } if(p == nil) Host_Error("CL_ParseServerMessage: server uses unknown protocol %d\n", i); if(p->version != cl.protocol.version) Host_Error("CL_ParseServerMessage: server decided to switch protocol to %d mid-game?\n", i); 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] = cl.protocol.MSG_ReadAngle (); break; case svc_setview: cl.viewentity = MSG_ReadShort (); break; case svc_lightstyle: i = MSG_ReadByte (); if (i >= Nlights) fatal ("svc_lightstyle > Nlights"); 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(); stopsfx(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: case svc_spawnbaseline2: i = MSG_ReadShort(); // must use CL_EntityNum() to force cl.num_entities up CL_ParseBaseline(cmd == svc_spawnbaseline2, CL_EntityNum(i)); break; case svc_spawnstatic: case svc_spawnstatic2: CL_ParseStatic(cmd == svc_spawnstatic2); break; case svc_temp_entity: CL_ParseTEnt(); break; case svc_setpause: { cl.paused = MSG_ReadByte (); if (cl.paused) pausecd(); else resumecd(); } 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) fatal ("svc_updatestat: %d is invalid", i); cl.stats[i] = MSG_ReadLong ();; break; case svc_spawnstaticsound: case svc_spawnstaticsound2: CL_ParseStaticSound(cmd == svc_spawnstaticsound2); break; case svc_cdtrack: cl.cdtrack = MSG_ReadByte (); MSG_ReadByte(); /* looptrack */ if((cls.demoplayback || cls.demorecording) && cls.forcetrack > 0) playcd(cls.forcetrack, 1); else playcd(cl.cdtrack, 1); 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; } } }