/* 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 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ // cl_parse.c -- parse a message received from the server #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: %i 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 = %i", 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 %i, not %i", i, PROTOCOL_VERSION); return; } // parse maxclients cl.maxclients = MSG_ReadByte (); if (cl.maxclients < 1 || cl.maxclients > MAX_SCOREBOARD) { Con_Printf("Bad maxclients (%u) 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] == NULL) { 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; int skin; 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 #ifdef GLQUAKE if (num > 0 && num <= cl.maxclients) R_TranslatePlayerSkin (num - 1); #endif } 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; } #ifdef GLQUAKE if (bits & U_SKIN) skin = MSG_ReadByte(); else skin = ent->baseline.skin; if (skin != ent->skinnum) { ent->skinnum = skin; if (num > 0 && num <= cl.maxclients) R_TranslatePlayerSkin (num - 1); } #else if (bits & U_SKIN) ent->skinnum = MSG_ReadByte(); else ent->skinnum = ent->baseline.skin; #endif 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; #ifdef GLQUAKE R_TranslatePlayerSkin (slot); #endif 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 ("%3i:%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 ("%i ",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 %i instead of %i\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"); Q_strcpy (cl_lightstyle[i].map, MSG_ReadString()); cl_lightstyle[i].length = Q_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 (); #ifdef _WIN32 VID_HandlePause (true); #endif } else { CDAudio_Resume (); #ifdef _WIN32 VID_HandlePause (false); #endif } } break; case svc_signonnum: i = MSG_ReadByte (); if (i <= cls.signon) Host_Error ("Received signon %i when at %i", 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: %i 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; } } }