protocol.c

   1 #include "quakedef.h"
   2
   3 #define ENTITYSIZEPROFILING_START(msg, num) \
   4         int entityprofiling_startsize = msg->cursize
   5
   6 #define ENTITYSIZEPROFILING_END(msg, num) \
   7         if(developer_networkentities.integer >= 2) \
   8         { \
   9                 prvm_edict_t *ed = prog->edicts + num; \
  10                 Con_Printf("sent entity update of size %d for a %s\n", (msg->cursize - entityprofiling_startsize), PRVM_serveredictstring(ed, classname) ? PRVM_GetString(prog, PRVM_serveredictstring(ed, classname)) : "(no classname)"); \
  11         }
  12
  13 // this is 88 bytes (must match entity_state_t in protocol.h)
  14 entity_state_t defaultstate =
  15 {
  16         // ! means this is not sent to client
  17         0,//double time; // ! time this state was built (used on client for interpolation)
  18         {0,0,0},//float netcenter[3]; // ! for network prioritization, this is the center of the bounding box (which may differ from the origin)
  19         {0,0,0},//float origin[3];
  20         {0,0,0},//float angles[3];
  21         0,//int effects;
  22         0,//unsigned int customizeentityforclient; // !
  23         0,//unsigned short number; // entity number this state is for
  24         0,//unsigned short modelindex;
  25         0,//unsigned short frame;
  26         0,//unsigned short tagentity;
  27         0,//unsigned short specialvisibilityradius; // ! larger if it has effects/light
  28         0,//unsigned short viewmodelforclient; // !
  29         0,//unsigned short exteriormodelforclient; // ! not shown if first person viewing from this entity, shown in all other cases
  30         0,//unsigned short nodrawtoclient; // !
  31         0,//unsigned short drawonlytoclient; // !
  32         0,//unsigned short traileffectnum;
  33         {0,0,0,0},//unsigned short light[4]; // color*256 (0.00 to 255.996), and radius*1
  34         ACTIVE_NOT,//unsigned char active; // true if a valid state
  35         0,//unsigned char lightstyle;
  36         0,//unsigned char lightpflags;
  37         0,//unsigned char colormap;
  38         0,//unsigned char skin; // also chooses cubemap for rtlights if lightpflags & LIGHTPFLAGS_FULLDYNAMIC
  39         255,//unsigned char alpha;
  40         16,//unsigned char scale;
  41         0,//unsigned char glowsize;
  42         254,//unsigned char glowcolor;
  43         0,//unsigned char flags;
  44         0,//unsigned char internaleffects; // INTEF_FLAG1QW and so on
  45         0,//unsigned char tagindex;
  46         {32, 32, 32},//unsigned char colormod[3];
  47         {32, 32, 32},//unsigned char glowmod[3];
  48 };
  49
  50 // LordHavoc: I own protocol ranges 96, 97, 3500-3599
  51
  52 struct protocolversioninfo_s
  53 {
  54         int number;
  55         protocolversion_t version;
  56         const char *name;
  57 }
  58 protocolversioninfo[] =
  59 {
  60         { 3504, PROTOCOL_DARKPLACES7 , "DP7"},
  61         { 3503, PROTOCOL_DARKPLACES6 , "DP6"},
  62         { 3502, PROTOCOL_DARKPLACES5 , "DP5"},
  63         { 3501, PROTOCOL_DARKPLACES4 , "DP4"},
  64         { 3500, PROTOCOL_DARKPLACES3 , "DP3"},
  65         {   97, PROTOCOL_DARKPLACES2 , "DP2"},
  66         {   96, PROTOCOL_DARKPLACES1 , "DP1"},
  67         {   15, PROTOCOL_QUAKEDP     , "QUAKEDP"},
  68         {   15, PROTOCOL_QUAKE       , "QUAKE"},
  69         {   28, PROTOCOL_QUAKEWORLD  , "QW"},
  70         {  250, PROTOCOL_NEHAHRAMOVIE, "NEHAHRAMOVIE"},
  71         {10000, PROTOCOL_NEHAHRABJP  , "NEHAHRABJP"},
  72         {10001, PROTOCOL_NEHAHRABJP2 , "NEHAHRABJP2"},
  73         {10002, PROTOCOL_NEHAHRABJP3 , "NEHAHRABJP3"},
  74         {    0, PROTOCOL_UNKNOWN     , NULL}
  75 };
  76
  77 protocolversion_t Protocol_EnumForName(const char *s)
  78 {
  79         int i;
  80         for (i = 0;protocolversioninfo[i].name;i++)
  81                 if (!strcasecmp(s, protocolversioninfo[i].name))
  82                         return protocolversioninfo[i].version;
  83         return PROTOCOL_UNKNOWN;
  84 }
  85
  86 const char *Protocol_NameForEnum(protocolversion_t p)
  87 {
  88         int i;
  89         for (i = 0;protocolversioninfo[i].name;i++)
  90                 if (protocolversioninfo[i].version == p)
  91                         return protocolversioninfo[i].name;
  92         return "UNKNOWN";
  93 }
  94
  95 protocolversion_t Protocol_EnumForNumber(int n)
  96 {
  97         int i;
  98         for (i = 0;protocolversioninfo[i].name;i++)
  99                 if (protocolversioninfo[i].number == n)
 100                         return protocolversioninfo[i].version;
 101         return PROTOCOL_UNKNOWN;
 102 }
 103
 104 int Protocol_NumberForEnum(protocolversion_t p)
 105 {
 106         int i;
 107         for (i = 0;protocolversioninfo[i].name;i++)
 108                 if (protocolversioninfo[i].version == p)
 109                         return protocolversioninfo[i].number;
 110         return 0;
 111 }
 112
 113 void Protocol_Names(char *buffer, size_t buffersize)
 114 {
 115         int i;
 116         if (buffersize < 1)
 117                 return;
 118         buffer[0] = 0;
 119         for (i = 0;protocolversioninfo[i].name;i++)
 120         {
 121                 if (i > 1)
 122                         strlcat(buffer, " ", buffersize);
 123                 strlcat(buffer, protocolversioninfo[i].name, buffersize);
 124         }
 125 }
 126
 127 void EntityFrameQuake_ReadEntity(int bits)
 128 {
 129         int num;
 130         entity_t *ent;
 131         entity_state_t s;
 132
 133         if (bits & U_MOREBITS)
 134                 bits |= (MSG_ReadByte(&cl_message)<<8);
 135         if ((bits & U_EXTEND1) && cls.protocol != PROTOCOL_NEHAHRAMOVIE)
 136         {
 137                 bits |= MSG_ReadByte(&cl_message) << 16;
 138                 if (bits & U_EXTEND2)
 139                         bits |= MSG_ReadByte(&cl_message) << 24;
 140         }
 141
 142         if (bits & U_LONGENTITY)
 143                 num = (unsigned short) MSG_ReadShort(&cl_message);
 144         else
 145                 num = MSG_ReadByte(&cl_message);
 146
 147         if (num >= MAX_EDICTS)
 148                 Host_Error("EntityFrameQuake_ReadEntity: entity number (%i) >= MAX_EDICTS (%i)", num, MAX_EDICTS);
 149         if (num < 1)
 150                 Host_Error("EntityFrameQuake_ReadEntity: invalid entity number (%i)", num);
 151
 152         if (cl.num_entities <= num)
 153         {
 154                 cl.num_entities = num + 1;
 155                 if (num >= cl.max_entities)
 156                         CL_ExpandEntities(num);
 157         }
 158
 159         ent = cl.entities + num;
 160
 161         // note: this inherits the 'active' state of the baseline chosen
 162         // (state_baseline is always active, state_current may not be active if
 163         // the entity was missing in the last frame)
 164         if (bits & U_DELTA)
 165                 s = ent->state_current;
 166         else
 167         {
 168                 s = ent->state_baseline;
 169                 s.active = ACTIVE_NETWORK;
 170         }
 171
 172         cl.isquakeentity[num] = true;
 173         if (cl.lastquakeentity < num)
 174                 cl.lastquakeentity = num;
 175         s.number = num;
 176         s.time = cl.mtime[0];
 177         s.flags = 0;
 178         if (bits & U_MODEL)
 179         {
 180                 if (cls.protocol == PROTOCOL_NEHAHRABJP || cls.protocol == PROTOCOL_NEHAHRABJP2 || cls.protocol == PROTOCOL_NEHAHRABJP3)
 181                                                         s.modelindex = (unsigned short) MSG_ReadShort(&cl_message);
 182                 else
 183                                                         s.modelindex = (s.modelindex & 0xFF00) | MSG_ReadByte(&cl_message);
 184         }
 185         if (bits & U_FRAME)             s.frame = (s.frame & 0xFF00) | MSG_ReadByte(&cl_message);
 186         if (bits & U_COLORMAP)  s.colormap = MSG_ReadByte(&cl_message);
 187         if (bits & U_SKIN)              s.skin = MSG_ReadByte(&cl_message);
 188         if (bits & U_EFFECTS)   s.effects = (s.effects & 0xFF00) | MSG_ReadByte(&cl_message);
 189         if (bits & U_ORIGIN1)   s.origin[0] = MSG_ReadCoord(&cl_message, cls.protocol);
 190         if (bits & U_ANGLE1)    s.angles[0] = MSG_ReadAngle(&cl_message, cls.protocol);
 191         if (bits & U_ORIGIN2)   s.origin[1] = MSG_ReadCoord(&cl_message, cls.protocol);
 192         if (bits & U_ANGLE2)    s.angles[1] = MSG_ReadAngle(&cl_message, cls.protocol);
 193         if (bits & U_ORIGIN3)   s.origin[2] = MSG_ReadCoord(&cl_message, cls.protocol);
 194         if (bits & U_ANGLE3)    s.angles[2] = MSG_ReadAngle(&cl_message, cls.protocol);
 195         if (bits & U_STEP)              s.flags |= RENDER_STEP;
 196         if (bits & U_ALPHA)             s.alpha = MSG_ReadByte(&cl_message);
 197         if (bits & U_SCALE)             s.scale = MSG_ReadByte(&cl_message);
 198         if (bits & U_EFFECTS2)  s.effects = (s.effects & 0x00FF) | (MSG_ReadByte(&cl_message) << 8);
 199         if (bits & U_GLOWSIZE)  s.glowsize = MSG_ReadByte(&cl_message);
 200         if (bits & U_GLOWCOLOR) s.glowcolor = MSG_ReadByte(&cl_message);
 201         if (bits & U_COLORMOD)  {int c = MSG_ReadByte(&cl_message);s.colormod[0] = (unsigned char)(((c >> 5) & 7) * (32.0f / 7.0f));s.colormod[1] = (unsigned char)(((c >> 2) & 7) * (32.0f / 7.0f));s.colormod[2] = (unsigned char)((c & 3) * (32.0f / 3.0f));}
 202         if (bits & U_GLOWTRAIL) s.flags |= RENDER_GLOWTRAIL;
 203         if (bits & U_FRAME2)    s.frame = (s.frame & 0x00FF) | (MSG_ReadByte(&cl_message) << 8);
 204         if (bits & U_MODEL2)    s.modelindex = (s.modelindex & 0x00FF) | (MSG_ReadByte(&cl_message) << 8);
 205         if (bits & U_VIEWMODEL) s.flags |= RENDER_VIEWMODEL;
 206         if (bits & U_EXTERIORMODEL)     s.flags |= RENDER_EXTERIORMODEL;
 207
 208         // LordHavoc: to allow playback of the Nehahra movie
 209         if (cls.protocol == PROTOCOL_NEHAHRAMOVIE && (bits & U_EXTEND1))
 210         {
 211                 // LordHavoc: evil format
 212                 int i = (int)MSG_ReadFloat(&cl_message);
 213                 int j = (int)(MSG_ReadFloat(&cl_message) * 255.0f);
 214                 if (i == 2)
 215                 {
 216                         i = (int)MSG_ReadFloat(&cl_message);
 217                         if (i)
 218                                 s.effects |= EF_FULLBRIGHT;
 219                 }
 220                 if (j < 0)
 221                         s.alpha = 0;
 222                 else if (j == 0 || j >= 255)
 223                         s.alpha = 255;
 224                 else
 225                         s.alpha = j;
 226         }
 227
 228         ent->state_previous = ent->state_current;
 229         ent->state_current = s;
 230         if (ent->state_current.active == ACTIVE_NETWORK)
 231         {
 232                 CL_MoveLerpEntityStates(ent);
 233                 cl.entities_active[ent->state_current.number] = true;
 234         }
 235
 236         if (cl_message.badread)
 237                 Host_Error("EntityFrameQuake_ReadEntity: read error");
 238 }
 239
 240 void EntityFrameQuake_ISeeDeadEntities(void)
 241 {
 242         int num, lastentity;
 243         if (cl.lastquakeentity == 0)
 244                 return;
 245         lastentity = cl.lastquakeentity;
 246         cl.lastquakeentity = 0;
 247         for (num = 0;num <= lastentity;num++)
 248         {
 249                 if (cl.isquakeentity[num])
 250                 {
 251                         if (cl.entities_active[num] && cl.entities[num].state_current.time == cl.mtime[0])
 252                         {
 253                                 cl.isquakeentity[num] = true;
 254                                 cl.lastquakeentity = num;
 255                         }
 256                         else
 257                         {
 258                                 cl.isquakeentity[num] = false;
 259                                 cl.entities_active[num] = ACTIVE_NOT;
 260                                 cl.entities[num].state_current = defaultstate;
 261                                 cl.entities[num].state_current.number = num;
 262                         }
 263                 }
 264         }
 265 }
 266
 267 // NOTE: this only works with DP5 protocol and upwards. For lower protocols
 268 // (including QUAKE), no packet loss handling for CSQC is done, which makes
 269 // CSQC basically useless.
 270 // Always use the DP5 protocol, or a higher one, when using CSQC entities.
 271 static void EntityFrameCSQC_LostAllFrames(client_t *client)
 272 {
 273         prvm_prog_t *prog = SVVM_prog;
 274         // mark ALL csqc entities as requiring a FULL resend!
 275         // I know this is a bad workaround, but better than nothing.
 276         int i, n;
 277         prvm_edict_t *ed;
 278
 279         n = client->csqcnumedicts;
 280         for(i = 0; i < n; ++i)
 281         {
 282                 if(client->csqcentityglobalhistory[i])
 283                 {
 284                         ed = prog->edicts + i;
 285                         if (PRVM_serveredictfunction(ed, SendEntity))
 286                                 client->csqcentitysendflags[i] |= 0xFFFFFF; // FULL RESEND
 287                         else // if it was ever sent to that client as a CSQC entity
 288                         {
 289                                 client->csqcentityscope[i] = 1; // REMOVE
 290                                 client->csqcentitysendflags[i] |= 0xFFFFFF;
 291                         }
 292                 }
 293         }
 294 }
 295 void EntityFrameCSQC_LostFrame(client_t *client, int framenum)
 296 {
 297         // marks a frame as lost
 298         int i, j;
 299         qboolean valid;
 300         int ringfirst, ringlast;
 301         static int recoversendflags[MAX_EDICTS]; // client only
 302         csqcentityframedb_t *d;
 303
 304         if(client->csqcentityframe_lastreset < 0)
 305                 return;
 306         if(framenum < client->csqcentityframe_lastreset)
 307                 return; // no action required, as we resent that data anyway
 308
 309         // is our frame out of history?
 310         ringfirst = client->csqcentityframehistory_next; // oldest entry
 311         ringlast = (ringfirst + NUM_CSQCENTITYDB_FRAMES - 1) % NUM_CSQCENTITYDB_FRAMES; // most recently added entry
 312
 313         valid = false;
 314
 315         for(j = 0; j < NUM_CSQCENTITYDB_FRAMES; ++j)
 316         {
 317                 d = &client->csqcentityframehistory[(ringfirst + j) % NUM_CSQCENTITYDB_FRAMES];
 318                 if(d->framenum < 0)
 319                         continue;
 320                 if(d->framenum == framenum)
 321                         break;
 322                 else if(d->framenum < framenum)
 323                         valid = true;
 324         }
 325         if(j == NUM_CSQCENTITYDB_FRAMES)
 326         {
 327                 if(valid) // got beaten, i.e. there is a frame < framenum
 328                 {
 329                         // a non-csqc frame got lost... great
 330                         return;
 331                 }
 332                 else
 333                 {
 334                         // a too old frame got lost... sorry, cannot handle this
 335                         Con_DPrintf("CSQC entity DB: lost a frame too early to do any handling (resending ALL)...\n");
 336                         Con_DPrintf("Lost frame = %d\n", framenum);
 337                         Con_DPrintf("Entity DB = %d to %d\n", client->csqcentityframehistory[ringfirst].framenum, client->csqcentityframehistory[ringlast].framenum);
 338                         EntityFrameCSQC_LostAllFrames(client);
 339                         client->csqcentityframe_lastreset = -1;
 340                 }
 341                 return;
 342         }
 343
 344         // so j is the frame that got lost
 345         // ringlast is the frame that we have to go to
 346         ringfirst = (ringfirst + j) % NUM_CSQCENTITYDB_FRAMES;
 347         if(ringlast < ringfirst)
 348                 ringlast += NUM_CSQCENTITYDB_FRAMES;
 349
 350         memset(recoversendflags, 0, sizeof(recoversendflags));
 351
 352         for(j = ringfirst; j <= ringlast; ++j)
 353         {
 354                 d = &client->csqcentityframehistory[j % NUM_CSQCENTITYDB_FRAMES];
 355                 if(d->framenum < 0)
 356                 {
 357                         // deleted frame
 358                 }
 359                 else if(d->framenum < framenum)
 360                 {
 361                         // a frame in the past... should never happen
 362                         Con_Printf("CSQC entity DB encountered a frame from the past when recovering from PL...?\n");
 363                 }
 364                 else if(d->framenum == framenum)
 365                 {
 366                         // handling the actually lost frame now
 367                         for(i = 0; i < d->num; ++i)
 368                         {
 369                                 int sf = d->sendflags[i];
 370                                 int ent = d->entno[i];
 371                                 if(sf < 0) // remove
 372                                         recoversendflags[ent] |= -1; // all bits, including sign
 373                                 else if(sf > 0)
 374                                         recoversendflags[ent] |= sf;
 375                         }
 376                 }
 377                 else
 378                 {
 379                         // handling the frames that followed it now
 380                         for(i = 0; i < d->num; ++i)
 381                         {
 382                                 int sf = d->sendflags[i];
 383                                 int ent = d->entno[i];
 384                                 if(sf < 0) // remove
 385                                 {
 386                                         recoversendflags[ent] = 0; // no need to update, we got a more recent remove (and will fix it THEN)
 387                                         break; // no flags left to remove...
 388                                 }
 389                                 else if(sf > 0)
 390                                         recoversendflags[ent] &= ~sf; // no need to update these bits, we already got them later
 391                         }
 392                 }
 393         }
 394
 395         for(i = 0; i < client->csqcnumedicts; ++i)
 396         {
 397                 if(recoversendflags[i] < 0)
 398                 {
 399                         // a remove got lost, then either send a remove or - if it was
 400                         // recreated later - a FULL update to make totally sure
 401                         client->csqcentityscope[i] = 1;
 402                         client->csqcentitysendflags[i] = 0xFFFFFF;
 403                 }
 404                 else
 405                         client->csqcentitysendflags[i] |= recoversendflags[i];
 406         }
 407 }
 408 static int EntityFrameCSQC_AllocFrame(client_t *client, int framenum)
 409 {
 410         int ringfirst = client->csqcentityframehistory_next; // oldest entry
 411         client->csqcentityframehistory_next += 1;
 412         client->csqcentityframehistory_next %= NUM_CSQCENTITYDB_FRAMES;
 413         client->csqcentityframehistory[ringfirst].framenum = framenum;
 414         client->csqcentityframehistory[ringfirst].num = 0;
 415         return ringfirst;
 416 }
 417 static void EntityFrameCSQC_DeallocFrame(client_t *client, int framenum)
 418 {
 419         int ringfirst = client->csqcentityframehistory_next; // oldest entry
 420         int ringlast = (ringfirst + NUM_CSQCENTITYDB_FRAMES - 1) % NUM_CSQCENTITYDB_FRAMES; // most recently added entry
 421         if(framenum == client->csqcentityframehistory[ringlast].framenum)
 422         {
 423                 client->csqcentityframehistory[ringlast].framenum = -1;
 424                 client->csqcentityframehistory[ringlast].num = 0;
 425                 client->csqcentityframehistory_next = ringlast;
 426         }
 427         else
 428                 Con_Printf("Trying to dealloc the wrong entity frame\n");
 429 }
 430
 431 //[515]: we use only one array per-client for SendEntity feature
 432 // TODO: add some handling for entity send priorities, to better deal with huge
 433 // amounts of csqc networked entities
 434 qboolean EntityFrameCSQC_WriteFrame (sizebuf_t *msg, int maxsize, int numnumbers, const unsigned short *numbers, int framenum)
 435 {
 436         prvm_prog_t *prog = SVVM_prog;
 437         int num, number, end, sendflags;
 438         qboolean sectionstarted = false;
 439         const unsigned short *n;
 440         prvm_edict_t *ed;
 441         client_t *client = svs.clients + sv.writeentitiestoclient_clientnumber;
 442         int dbframe = EntityFrameCSQC_AllocFrame(client, framenum);
 443         csqcentityframedb_t *db = &client->csqcentityframehistory[dbframe];
 444
 445         if(client->csqcentityframe_lastreset < 0)
 446                 client->csqcentityframe_lastreset = framenum;
 447
 448         maxsize -= 24; // always fit in an empty svc_entities message (for packet loss detection!)
 449
 450         // make sure there is enough room to store the svc_csqcentities byte,
 451         // the terminator (0x0000) and at least one entity update
 452         if (msg->cursize + 32 >= maxsize)
 453                 return false;
 454
 455         if (client->csqcnumedicts < prog->num_edicts)
 456                 client->csqcnumedicts = prog->num_edicts;
 457
 458         number = 1;
 459         for (num = 0, n = numbers;num < numnumbers;num++, n++)
 460         {
 461                 end = *n;
 462                 for (;number < end;number++)
 463                 {
 464                         if (client->csqcentityscope[number])
 465                         {
 466                                 client->csqcentityscope[number] = 1;
 467                                 client->csqcentitysendflags[number] = 0xFFFFFF;
 468                         }
 469                 }
 470                 ed = prog->edicts + number;
 471                 if (PRVM_serveredictfunction(ed, SendEntity))
 472                         client->csqcentityscope[number] = 2;
 473                 else if (client->csqcentityscope[number])
 474                 {
 475                         client->csqcentityscope[number] = 1;
 476                         client->csqcentitysendflags[number] = 0xFFFFFF;
 477                 }
 478                 number++;
 479         }
 480         end = client->csqcnumedicts;
 481         for (;number < end;number++)
 482         {
 483                 if (client->csqcentityscope[number])
 484                 {
 485                         client->csqcentityscope[number] = 1;
 486                         client->csqcentitysendflags[number] = 0xFFFFFF;
 487                 }
 488         }
 489
 490         /*
 491         // mark all scope entities as remove
 492         for (number = 1;number < client->csqcnumedicts;number++)
 493                 if (client->csqcentityscope[number])
 494                         client->csqcentityscope[number] = 1;
 495         // keep visible entities
 496         for (i = 0, n = numbers;i < numnumbers;i++, n++)
 497         {
 498                 number = *n;
 499                 ed = prog->edicts + number;
 500                 if (PRVM_serveredictfunction(ed, SendEntity))
 501                         client->csqcentityscope[number] = 2;
 502         }
 503         */
 504
 505         // now try to emit the entity updates
 506         // (FIXME: prioritize by distance?)
 507         end = client->csqcnumedicts;
 508         for (number = 1;number < end;number++)
 509         {
 510                 if (!client->csqcentityscope[number])
 511                         continue;
 512                 sendflags = client->csqcentitysendflags[number];
 513                 if (!sendflags)
 514                         continue;
 515                 if(db->num >= NUM_CSQCENTITIES_PER_FRAME)
 516                         break;
 517                 ed = prog->edicts + number;
 518                 // entity scope is either update (2) or remove (1)
 519                 if (client->csqcentityscope[number] == 1)
 520                 {
 521                         // write a remove message
 522                         // first write the message identifier if needed
 523                         if(!sectionstarted)
 524                         {
 525                                 sectionstarted = 1;
 526                                 MSG_WriteByte(msg, svc_csqcentities);
 527                         }
 528                         // write the remove message
 529                         {
 530                                 ENTITYSIZEPROFILING_START(msg, number);
 531                                 MSG_WriteShort(msg, (unsigned short)number | 0x8000);
 532                                 client->csqcentityscope[number] = 0;
 533                                 client->csqcentitysendflags[number] = 0xFFFFFF; // resend completely if it becomes active again
 534                                 db->entno[db->num] = number;
 535                                 db->sendflags[db->num] = -1;
 536                                 db->num += 1;
 537                                 client->csqcentityglobalhistory[number] = 1;
 538                                 ENTITYSIZEPROFILING_END(msg, number);
 539                         }
 540                         if (msg->cursize + 17 >= maxsize)
 541                                 break;
 542                 }
 543                 else
 544                 {
 545                         // write an update
 546                         // save the cursize value in case we overflow and have to rollback
 547                         int oldcursize = msg->cursize;
 548                         client->csqcentityscope[number] = 1;
 549                         if (PRVM_serveredictfunction(ed, SendEntity))
 550                         {
 551                                 if(!sectionstarted)
 552                                         MSG_WriteByte(msg, svc_csqcentities);
 553                                 {
 554                                         ENTITYSIZEPROFILING_START(msg, number);
 555                                         MSG_WriteShort(msg, number);
 556                                         msg->allowoverflow = true;
 557                                         PRVM_G_INT(OFS_PARM0) = sv.writeentitiestoclient_cliententitynumber;
 558                                         PRVM_G_FLOAT(OFS_PARM1) = sendflags;
 559                                         PRVM_serverglobaledict(self) = number;
 560                                         prog->ExecuteProgram(prog, PRVM_serveredictfunction(ed, SendEntity), "Null SendEntity\n");
 561                                         msg->allowoverflow = false;
 562                                         if(PRVM_G_FLOAT(OFS_RETURN) && msg->cursize + 2 <= maxsize)
 563                                         {
 564                                                 // an update has been successfully written
 565                                                 client->csqcentitysendflags[number] = 0;
 566                                                 db->entno[db->num] = number;
 567                                                 db->sendflags[db->num] = sendflags;
 568                                                 db->num += 1;
 569                                                 client->csqcentityglobalhistory[number] = 1;
 570                                                 // and take note that we have begun the svc_csqcentities
 571                                                 // section of the packet
 572                                                 sectionstarted = 1;
 573                                                 ENTITYSIZEPROFILING_END(msg, number);
 574                                                 if (msg->cursize + 17 >= maxsize)
 575                                                         break;
 576                                                 continue;
 577                                         }
 578                                 }
 579                         }
 580                         // self.SendEntity returned false (or does not exist) or the
 581                         // update was too big for this packet - rollback the buffer to its
 582                         // state before the writes occurred, we'll try again next frame
 583                         msg->cursize = oldcursize;
 584                         msg->overflowed = false;
 585                 }
 586         }
 587         if (sectionstarted)
 588         {
 589                 // write index 0 to end the update (0 is never used by real entities)
 590                 MSG_WriteShort(msg, 0);
 591         }
 592
 593         if(db->num == 0)
 594                 // if no single ent got added, remove the frame from the DB again, to allow
 595                 // for a larger history
 596                 EntityFrameCSQC_DeallocFrame(client, framenum);
 597
 598         return sectionstarted;
 599 }
 600
 601 void Protocol_UpdateClientStats(const int *stats)
 602 {
 603         int i;
 604         // update the stats array and set deltabits for any changed stats
 605         for (i = 0;i < MAX_CL_STATS;i++)
 606         {
 607                 if (host_client->stats[i] != stats[i])
 608                 {
 609                         host_client->statsdeltabits[i >> 3] |= 1 << (i & 7);
 610                         host_client->stats[i] = stats[i];
 611                 }
 612         }
 613 }
 614
 615 // only a few stats are within the 32 stat limit of Quake, and most of them
 616 // are sent every frame in svc_clientdata messages, so we only send the
 617 // remaining ones here
 618 static const int sendquakestats[] =
 619 {
 620 // quake did not send these secrets/monsters stats in this way, but doing so
 621 // allows a mod to increase STAT_TOTALMONSTERS during the game, and ensures
 622 // that STAT_SECRETS and STAT_MONSTERS are always correct (even if a client
 623 // didn't receive an svc_foundsecret or svc_killedmonster), which may be most
 624 // valuable if randomly seeking around in a demo
 625 STAT_TOTALSECRETS, // never changes during game
 626 STAT_TOTALMONSTERS, // changes in some mods
 627 STAT_SECRETS, // this makes svc_foundsecret unnecessary
 628 STAT_MONSTERS, // this makes svc_killedmonster unnecessary
 629 STAT_VIEWHEIGHT, // sent just for FTEQW clients
 630 STAT_VIEWZOOM, // this rarely changes
 631 -1,
 632 };
 633
 634 void Protocol_WriteStatsReliable(void)
 635 {
 636         int i, j;
 637         if (!host_client->netconnection)
 638                 return;
 639         // detect changes in stats and write reliable messages
 640         // this only deals with 32 stats because the older protocols which use
 641         // this function can only cope with 32 stats,
 642         // they also do not support svc_updatestatubyte which was introduced in
 643         // DP6 protocol (except for QW)
 644         for (j = 0;sendquakestats[j] >= 0;j++)
 645         {
 646                 i = sendquakestats[j];
 647                 // check if this bit is set
 648                 if (host_client->statsdeltabits[i >> 3] & (1 << (i & 7)))
 649                 {
 650                         host_client->statsdeltabits[i >> 3] -= (1 << (i & 7));
 651                         // send the stat as a byte if possible
 652                         if (sv.protocol == PROTOCOL_QUAKEWORLD)
 653                         {
 654                                 if (host_client->stats[i] >= 0 && host_client->stats[i] < 256)
 655                                 {
 656                                         MSG_WriteByte(&host_client->netconnection->message, qw_svc_updatestat);
 657                                         MSG_WriteByte(&host_client->netconnection->message, i);
 658                                         MSG_WriteByte(&host_client->netconnection->message, host_client->stats[i]);
 659                                 }
 660                                 else
 661                                 {
 662                                         MSG_WriteByte(&host_client->netconnection->message, qw_svc_updatestatlong);
 663                                         MSG_WriteByte(&host_client->netconnection->message, i);
 664                                         MSG_WriteLong(&host_client->netconnection->message, host_client->stats[i]);
 665                                 }
 666                         }
 667                         else
 668                         {
 669                                 // this could make use of svc_updatestatubyte in DP6 and later
 670                                 // protocols but those protocols do not use this function
 671                                 MSG_WriteByte(&host_client->netconnection->message, svc_updatestat);
 672                                 MSG_WriteByte(&host_client->netconnection->message, i);
 673                                 MSG_WriteLong(&host_client->netconnection->message, host_client->stats[i]);
 674                         }
 675                 }
 676         }
 677 }
 678
 679
 680 qboolean EntityFrameQuake_WriteFrame(sizebuf_t *msg, int maxsize, int numstates, const entity_state_t **states)
 681 {
 682         prvm_prog_t *prog = SVVM_prog;
 683         const entity_state_t *s;
 684         entity_state_t baseline;
 685         int i, bits;
 686         sizebuf_t buf;
 687         unsigned char data[128];
 688         qboolean success = false;
 689
 690         // prepare the buffer
 691         memset(&buf, 0, sizeof(buf));
 692         buf.data = data;
 693         buf.maxsize = sizeof(data);
 694
 695         for (i = 0;i < numstates;i++)
 696         {
 697                 ENTITYSIZEPROFILING_START(msg, states[i]->number);
 698                 s = states[i];
 699                 if(PRVM_serveredictfunction((&prog->edicts[s->number]), SendEntity))
 700                         continue;
 701
 702                 // prepare the buffer
 703                 SZ_Clear(&buf);
 704
 705 // send an update
 706                 bits = 0;
 707                 if (s->number >= 256)
 708                         bits |= U_LONGENTITY;
 709                 if (s->flags & RENDER_STEP)
 710                         bits |= U_STEP;
 711                 if (s->flags & RENDER_VIEWMODEL)
 712                         bits |= U_VIEWMODEL;
 713                 if (s->flags & RENDER_GLOWTRAIL)
 714                         bits |= U_GLOWTRAIL;
 715                 if (s->flags & RENDER_EXTERIORMODEL)
 716                         bits |= U_EXTERIORMODEL;
 717
 718                 // LordHavoc: old stuff, but rewritten to have more exact tolerances
 719                 baseline = prog->edicts[s->number].priv.server->baseline;
 720                 if (baseline.origin[0] != s->origin[0])
 721                         bits |= U_ORIGIN1;
 722                 if (baseline.origin[1] != s->origin[1])
 723                         bits |= U_ORIGIN2;
 724                 if (baseline.origin[2] != s->origin[2])
 725                         bits |= U_ORIGIN3;
 726                 if (baseline.angles[0] != s->angles[0])
 727                         bits |= U_ANGLE1;
 728                 if (baseline.angles[1] != s->angles[1])
 729                         bits |= U_ANGLE2;
 730                 if (baseline.angles[2] != s->angles[2])
 731                         bits |= U_ANGLE3;
 732                 if (baseline.colormap != s->colormap)
 733                         bits |= U_COLORMAP;
 734                 if (baseline.skin != s->skin)
 735                         bits |= U_SKIN;
 736                 if (baseline.frame != s->frame)
 737                 {
 738                         bits |= U_FRAME;
 739                         if (s->frame & 0xFF00)
 740                                 bits |= U_FRAME2;
 741                 }
 742                 if (baseline.effects != s->effects)
 743                 {
 744                         bits |= U_EFFECTS;
 745                         if (s->effects & 0xFF00)
 746                                 bits |= U_EFFECTS2;
 747                 }
 748                 if (baseline.modelindex != s->modelindex)
 749                 {
 750                         bits |= U_MODEL;
 751                         if ((s->modelindex & 0xFF00) && sv.protocol != PROTOCOL_NEHAHRABJP && sv.protocol != PROTOCOL_NEHAHRABJP2 && sv.protocol != PROTOCOL_NEHAHRABJP3)
 752                                 bits |= U_MODEL2;
 753                 }
 754                 if (baseline.alpha != s->alpha)
 755                         bits |= U_ALPHA;
 756                 if (baseline.scale != s->scale)
 757                         bits |= U_SCALE;
 758                 if (baseline.glowsize != s->glowsize)
 759                         bits |= U_GLOWSIZE;
 760                 if (baseline.glowcolor != s->glowcolor)
 761                         bits |= U_GLOWCOLOR;
 762                 if (!VectorCompare(baseline.colormod, s->colormod))
 763                         bits |= U_COLORMOD;
 764
 765                 // if extensions are disabled, clear the relevant update flags
 766                 if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_NEHAHRAMOVIE)
 767                         bits &= 0x7FFF;
 768                 if (sv.protocol == PROTOCOL_NEHAHRAMOVIE)
 769                         if (s->alpha != 255 || s->effects & EF_FULLBRIGHT)
 770                                 bits |= U_EXTEND1;
 771
 772                 // write the message
 773                 if (bits >= 16777216)
 774                         bits |= U_EXTEND2;
 775                 if (bits >= 65536)
 776                         bits |= U_EXTEND1;
 777                 if (bits >= 256)
 778                         bits |= U_MOREBITS;
 779                 bits |= U_SIGNAL;
 780
 781                 MSG_WriteByte (&buf, bits);
 782                 if (bits & U_MOREBITS)          MSG_WriteByte(&buf, bits>>8);
 783                 if (sv.protocol != PROTOCOL_NEHAHRAMOVIE)
 784                 {
 785                         if (bits & U_EXTEND1)   MSG_WriteByte(&buf, bits>>16);
 786                         if (bits & U_EXTEND2)   MSG_WriteByte(&buf, bits>>24);
 787                 }
 788                 if (bits & U_LONGENTITY)        MSG_WriteShort(&buf, s->number);
 789                 else                                            MSG_WriteByte(&buf, s->number);
 790
 791                 if (bits & U_MODEL)
 792                 {
 793                         if (sv.protocol == PROTOCOL_NEHAHRABJP || sv.protocol == PROTOCOL_NEHAHRABJP2 || sv.protocol == PROTOCOL_NEHAHRABJP3)
 794                                 MSG_WriteShort(&buf, s->modelindex);
 795                         else
 796                                 MSG_WriteByte(&buf, s->modelindex);
 797                 }
 798                 if (bits & U_FRAME)                     MSG_WriteByte(&buf, s->frame);
 799                 if (bits & U_COLORMAP)          MSG_WriteByte(&buf, s->colormap);
 800                 if (bits & U_SKIN)                      MSG_WriteByte(&buf, s->skin);
 801                 if (bits & U_EFFECTS)           MSG_WriteByte(&buf, s->effects);
 802                 if (bits & U_ORIGIN1)           MSG_WriteCoord(&buf, s->origin[0], sv.protocol);
 803                 if (bits & U_ANGLE1)            MSG_WriteAngle(&buf, s->angles[0], sv.protocol);
 804                 if (bits & U_ORIGIN2)           MSG_WriteCoord(&buf, s->origin[1], sv.protocol);
 805                 if (bits & U_ANGLE2)            MSG_WriteAngle(&buf, s->angles[1], sv.protocol);
 806                 if (bits & U_ORIGIN3)           MSG_WriteCoord(&buf, s->origin[2], sv.protocol);
 807                 if (bits & U_ANGLE3)            MSG_WriteAngle(&buf, s->angles[2], sv.protocol);
 808                 if (bits & U_ALPHA)                     MSG_WriteByte(&buf, s->alpha);
 809                 if (bits & U_SCALE)                     MSG_WriteByte(&buf, s->scale);
 810                 if (bits & U_EFFECTS2)          MSG_WriteByte(&buf, s->effects >> 8);
 811                 if (bits & U_GLOWSIZE)          MSG_WriteByte(&buf, s->glowsize);
 812                 if (bits & U_GLOWCOLOR)         MSG_WriteByte(&buf, s->glowcolor);
 813                 if (bits & U_COLORMOD)          {int c = ((int)bound(0, s->colormod[0] * (7.0f / 32.0f), 7) << 5) | ((int)bound(0, s->colormod[1] * (7.0f / 32.0f), 7) << 2) | ((int)bound(0, s->colormod[2] * (3.0f / 32.0f), 3) << 0);MSG_WriteByte(&buf, c);}
 814                 if (bits & U_FRAME2)            MSG_WriteByte(&buf, s->frame >> 8);
 815                 if (bits & U_MODEL2)            MSG_WriteByte(&buf, s->modelindex >> 8);
 816
 817                 // the nasty protocol
 818                 if ((bits & U_EXTEND1) && sv.protocol == PROTOCOL_NEHAHRAMOVIE)
 819                 {
 820                         if (s->effects & EF_FULLBRIGHT)
 821                         {
 822                                 MSG_WriteFloat(&buf, 2); // QSG protocol version
 823                                 MSG_WriteFloat(&buf, s->alpha <= 0 ? 0 : (s->alpha >= 255 ? 1 : s->alpha * (1.0f / 255.0f))); // alpha
 824                                 MSG_WriteFloat(&buf, 1); // fullbright
 825                         }
 826                         else
 827                         {
 828                                 MSG_WriteFloat(&buf, 1); // QSG protocol version
 829                                 MSG_WriteFloat(&buf, s->alpha <= 0 ? 0 : (s->alpha >= 255 ? 1 : s->alpha * (1.0f / 255.0f))); // alpha
 830                         }
 831                 }
 832
 833                 // if the commit is full, we're done this frame
 834                 if (msg->cursize + buf.cursize > maxsize)
 835                 {
 836                         // next frame we will continue where we left off
 837                         break;
 838                 }
 839                 // write the message to the packet
 840                 SZ_Write(msg, buf.data, buf.cursize);
 841                 success = true;
 842                 ENTITYSIZEPROFILING_END(msg, s->number);
 843         }
 844         return success;
 845 }
 846
 847 int EntityState_DeltaBits(const entity_state_t *o, const entity_state_t *n)
 848 {
 849         unsigned int bits;
 850         // if o is not active, delta from default
 851         if (o->active != ACTIVE_NETWORK)
 852                 o = &defaultstate;
 853         bits = 0;
 854         if (fabs(n->origin[0] - o->origin[0]) > (1.0f / 256.0f))
 855                 bits |= E_ORIGIN1;
 856         if (fabs(n->origin[1] - o->origin[1]) > (1.0f / 256.0f))
 857                 bits |= E_ORIGIN2;
 858         if (fabs(n->origin[2] - o->origin[2]) > (1.0f / 256.0f))
 859                 bits |= E_ORIGIN3;
 860         if ((unsigned char) (n->angles[0] * (256.0f / 360.0f)) != (unsigned char) (o->angles[0] * (256.0f / 360.0f)))
 861                 bits |= E_ANGLE1;
 862         if ((unsigned char) (n->angles[1] * (256.0f / 360.0f)) != (unsigned char) (o->angles[1] * (256.0f / 360.0f)))
 863                 bits |= E_ANGLE2;
 864         if ((unsigned char) (n->angles[2] * (256.0f / 360.0f)) != (unsigned char) (o->angles[2] * (256.0f / 360.0f)))
 865                 bits |= E_ANGLE3;
 866         if ((n->modelindex ^ o->modelindex) & 0x00FF)
 867                 bits |= E_MODEL1;
 868         if ((n->modelindex ^ o->modelindex) & 0xFF00)
 869                 bits |= E_MODEL2;
 870         if ((n->frame ^ o->frame) & 0x00FF)
 871                 bits |= E_FRAME1;
 872         if ((n->frame ^ o->frame) & 0xFF00)
 873                 bits |= E_FRAME2;
 874         if ((n->effects ^ o->effects) & 0x00FF)
 875                 bits |= E_EFFECTS1;
 876         if ((n->effects ^ o->effects) & 0xFF00)
 877                 bits |= E_EFFECTS2;
 878         if (n->colormap != o->colormap)
 879                 bits |= E_COLORMAP;
 880         if (n->skin != o->skin)
 881                 bits |= E_SKIN;
 882         if (n->alpha != o->alpha)
 883                 bits |= E_ALPHA;
 884         if (n->scale != o->scale)
 885                 bits |= E_SCALE;
 886         if (n->glowsize != o->glowsize)
 887                 bits |= E_GLOWSIZE;
 888         if (n->glowcolor != o->glowcolor)
 889                 bits |= E_GLOWCOLOR;
 890         if (n->flags != o->flags)
 891                 bits |= E_FLAGS;
 892         if (n->tagindex != o->tagindex || n->tagentity != o->tagentity)
 893                 bits |= E_TAGATTACHMENT;
 894         if (n->light[0] != o->light[0] || n->light[1] != o->light[1] || n->light[2] != o->light[2] || n->light[3] != o->light[3])
 895                 bits |= E_LIGHT;
 896         if (n->lightstyle != o->lightstyle)
 897                 bits |= E_LIGHTSTYLE;
 898         if (n->lightpflags != o->lightpflags)
 899                 bits |= E_LIGHTPFLAGS;
 900
 901         if (bits)
 902         {
 903                 if (bits &  0xFF000000)
 904                         bits |= 0x00800000;
 905                 if (bits &  0x00FF0000)
 906                         bits |= 0x00008000;
 907                 if (bits &  0x0000FF00)
 908                         bits |= 0x00000080;
 909         }
 910         return bits;
 911 }
 912
 913 void EntityState_WriteExtendBits(sizebuf_t *msg, unsigned int bits)
 914 {
 915         MSG_WriteByte(msg, bits & 0xFF);
 916         if (bits & 0x00000080)
 917         {
 918                 MSG_WriteByte(msg, (bits >> 8) & 0xFF);
 919                 if (bits & 0x00008000)
 920                 {
 921                         MSG_WriteByte(msg, (bits >> 16) & 0xFF);
 922                         if (bits & 0x00800000)
 923                                 MSG_WriteByte(msg, (bits >> 24) & 0xFF);
 924                 }
 925         }
 926 }
 927
 928 void EntityState_WriteFields(const entity_state_t *ent, sizebuf_t *msg, unsigned int bits)
 929 {
 930         if (sv.protocol == PROTOCOL_DARKPLACES2)
 931         {
 932                 if (bits & E_ORIGIN1)
 933                         MSG_WriteCoord16i(msg, ent->origin[0]);
 934                 if (bits & E_ORIGIN2)
 935                         MSG_WriteCoord16i(msg, ent->origin[1]);
 936                 if (bits & E_ORIGIN3)
 937                         MSG_WriteCoord16i(msg, ent->origin[2]);
 938         }
 939         else
 940         {
 941                 // LordHavoc: have to write flags first, as they can modify protocol
 942                 if (bits & E_FLAGS)
 943                         MSG_WriteByte(msg, ent->flags);
 944                 if (ent->flags & RENDER_LOWPRECISION)
 945                 {
 946                         if (bits & E_ORIGIN1)
 947                                 MSG_WriteCoord16i(msg, ent->origin[0]);
 948                         if (bits & E_ORIGIN2)
 949                                 MSG_WriteCoord16i(msg, ent->origin[1]);
 950                         if (bits & E_ORIGIN3)
 951                                 MSG_WriteCoord16i(msg, ent->origin[2]);
 952                 }
 953                 else
 954                 {
 955                         if (bits & E_ORIGIN1)
 956                                 MSG_WriteCoord32f(msg, ent->origin[0]);
 957                         if (bits & E_ORIGIN2)
 958                                 MSG_WriteCoord32f(msg, ent->origin[1]);
 959                         if (bits & E_ORIGIN3)
 960                                 MSG_WriteCoord32f(msg, ent->origin[2]);
 961                 }
 962         }
 963         if ((sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4) && (ent->flags & RENDER_LOWPRECISION))
 964         {
 965                 if (bits & E_ANGLE1)
 966                         MSG_WriteAngle8i(msg, ent->angles[0]);
 967                 if (bits & E_ANGLE2)
 968                         MSG_WriteAngle8i(msg, ent->angles[1]);
 969                 if (bits & E_ANGLE3)
 970                         MSG_WriteAngle8i(msg, ent->angles[2]);
 971         }
 972         else
 973         {
 974                 if (bits & E_ANGLE1)
 975                         MSG_WriteAngle16i(msg, ent->angles[0]);
 976                 if (bits & E_ANGLE2)
 977                         MSG_WriteAngle16i(msg, ent->angles[1]);
 978                 if (bits & E_ANGLE3)
 979                         MSG_WriteAngle16i(msg, ent->angles[2]);
 980         }
 981         if (bits & E_MODEL1)
 982                 MSG_WriteByte(msg, ent->modelindex & 0xFF);
 983         if (bits & E_MODEL2)
 984                 MSG_WriteByte(msg, (ent->modelindex >> 8) & 0xFF);
 985         if (bits & E_FRAME1)
 986                 MSG_WriteByte(msg, ent->frame & 0xFF);
 987         if (bits & E_FRAME2)
 988                 MSG_WriteByte(msg, (ent->frame >> 8) & 0xFF);
 989         if (bits & E_EFFECTS1)
 990                 MSG_WriteByte(msg, ent->effects & 0xFF);
 991         if (bits & E_EFFECTS2)
 992                 MSG_WriteByte(msg, (ent->effects >> 8) & 0xFF);
 993         if (bits & E_COLORMAP)
 994                 MSG_WriteByte(msg, ent->colormap);
 995         if (bits & E_SKIN)
 996                 MSG_WriteByte(msg, ent->skin);
 997         if (bits & E_ALPHA)
 998                 MSG_WriteByte(msg, ent->alpha);
 999         if (bits & E_SCALE)
1000                 MSG_WriteByte(msg, ent->scale);
1001         if (bits & E_GLOWSIZE)
1002                 MSG_WriteByte(msg, ent->glowsize);
1003         if (bits & E_GLOWCOLOR)
1004                 MSG_WriteByte(msg, ent->glowcolor);
1005         if (sv.protocol == PROTOCOL_DARKPLACES2)
1006                 if (bits & E_FLAGS)
1007                         MSG_WriteByte(msg, ent->flags);
1008         if (bits & E_TAGATTACHMENT)
1009         {
1010                 MSG_WriteShort(msg, ent->tagentity);
1011                 MSG_WriteByte(msg, ent->tagindex);
1012         }
1013         if (bits & E_LIGHT)
1014         {
1015                 MSG_WriteShort(msg, ent->light[0]);
1016                 MSG_WriteShort(msg, ent->light[1]);
1017                 MSG_WriteShort(msg, ent->light[2]);
1018                 MSG_WriteShort(msg, ent->light[3]);
1019         }
1020         if (bits & E_LIGHTSTYLE)
1021                 MSG_WriteByte(msg, ent->lightstyle);
1022         if (bits & E_LIGHTPFLAGS)
1023                 MSG_WriteByte(msg, ent->lightpflags);
1024 }
1025
1026 void EntityState_WriteUpdate(const entity_state_t *ent, sizebuf_t *msg, const entity_state_t *delta)
1027 {
1028         prvm_prog_t *prog = SVVM_prog;
1029         unsigned int bits;
1030         ENTITYSIZEPROFILING_START(msg, ent->number);
1031         if (ent->active == ACTIVE_NETWORK)
1032         {
1033                 // entity is active, check for changes from the delta
1034                 if ((bits = EntityState_DeltaBits(delta, ent)))
1035                 {
1036                         // write the update number, bits, and fields
1037                         MSG_WriteShort(msg, ent->number);
1038                         EntityState_WriteExtendBits(msg, bits);
1039                         EntityState_WriteFields(ent, msg, bits);
1040                 }
1041         }
1042         else
1043         {
1044                 // entity is inactive, check if the delta was active
1045                 if (delta->active == ACTIVE_NETWORK)
1046                 {
1047                         // write the remove number
1048                         MSG_WriteShort(msg, ent->number | 0x8000);
1049                 }
1050         }
1051         ENTITYSIZEPROFILING_END(msg, ent->number);
1052 }
1053
1054 int EntityState_ReadExtendBits(void)
1055 {
1056         unsigned int bits;
1057         bits = MSG_ReadByte(&cl_message);
1058         if (bits & 0x00000080)
1059         {
1060                 bits |= MSG_ReadByte(&cl_message) << 8;
1061                 if (bits & 0x00008000)
1062                 {
1063                         bits |= MSG_ReadByte(&cl_message) << 16;
1064                         if (bits & 0x00800000)
1065                                 bits |= MSG_ReadByte(&cl_message) << 24;
1066                 }
1067         }
1068         return bits;
1069 }
1070
1071 void EntityState_ReadFields(entity_state_t *e, unsigned int bits)
1072 {
1073         if (cls.protocol == PROTOCOL_DARKPLACES2)
1074         {
1075                 if (bits & E_ORIGIN1)
1076                         e->origin[0] = MSG_ReadCoord16i(&cl_message);
1077                 if (bits & E_ORIGIN2)
1078                         e->origin[1] = MSG_ReadCoord16i(&cl_message);
1079                 if (bits & E_ORIGIN3)
1080                         e->origin[2] = MSG_ReadCoord16i(&cl_message);
1081         }
1082         else
1083         {
1084                 if (bits & E_FLAGS)
1085                         e->flags = MSG_ReadByte(&cl_message);
1086                 if (e->flags & RENDER_LOWPRECISION)
1087                 {
1088                         if (bits & E_ORIGIN1)
1089                                 e->origin[0] = MSG_ReadCoord16i(&cl_message);
1090                         if (bits & E_ORIGIN2)
1091                                 e->origin[1] = MSG_ReadCoord16i(&cl_message);
1092                         if (bits & E_ORIGIN3)
1093                                 e->origin[2] = MSG_ReadCoord16i(&cl_message);
1094                 }
1095                 else
1096                 {
1097                         if (bits & E_ORIGIN1)
1098                                 e->origin[0] = MSG_ReadCoord32f(&cl_message);
1099                         if (bits & E_ORIGIN2)
1100                                 e->origin[1] = MSG_ReadCoord32f(&cl_message);
1101                         if (bits & E_ORIGIN3)
1102                                 e->origin[2] = MSG_ReadCoord32f(&cl_message);
1103                 }
1104         }
1105         if ((cls.protocol == PROTOCOL_DARKPLACES5 || cls.protocol == PROTOCOL_DARKPLACES6) && !(e->flags & RENDER_LOWPRECISION))
1106         {
1107                 if (bits & E_ANGLE1)
1108                         e->angles[0] = MSG_ReadAngle16i(&cl_message);
1109                 if (bits & E_ANGLE2)
1110                         e->angles[1] = MSG_ReadAngle16i(&cl_message);
1111                 if (bits & E_ANGLE3)
1112                         e->angles[2] = MSG_ReadAngle16i(&cl_message);
1113         }
1114         else
1115         {
1116                 if (bits & E_ANGLE1)
1117                         e->angles[0] = MSG_ReadAngle8i(&cl_message);
1118                 if (bits & E_ANGLE2)
1119                         e->angles[1] = MSG_ReadAngle8i(&cl_message);
1120                 if (bits & E_ANGLE3)
1121                         e->angles[2] = MSG_ReadAngle8i(&cl_message);
1122         }
1123         if (bits & E_MODEL1)
1124                 e->modelindex = (e->modelindex & 0xFF00) | (unsigned int) MSG_ReadByte(&cl_message);
1125         if (bits & E_MODEL2)
1126                 e->modelindex = (e->modelindex & 0x00FF) | ((unsigned int) MSG_ReadByte(&cl_message) << 8);
1127         if (bits & E_FRAME1)
1128                 e->frame = (e->frame & 0xFF00) | (unsigned int) MSG_ReadByte(&cl_message);
1129         if (bits & E_FRAME2)
1130                 e->frame = (e->frame & 0x00FF) | ((unsigned int) MSG_ReadByte(&cl_message) << 8);
1131         if (bits & E_EFFECTS1)
1132                 e->effects = (e->effects & 0xFF00) | (unsigned int) MSG_ReadByte(&cl_message);
1133         if (bits & E_EFFECTS2)
1134                 e->effects = (e->effects & 0x00FF) | ((unsigned int) MSG_ReadByte(&cl_message) << 8);
1135         if (bits & E_COLORMAP)
1136                 e->colormap = MSG_ReadByte(&cl_message);
1137         if (bits & E_SKIN)
1138                 e->skin = MSG_ReadByte(&cl_message);
1139         if (bits & E_ALPHA)
1140                 e->alpha = MSG_ReadByte(&cl_message);
1141         if (bits & E_SCALE)
1142                 e->scale = MSG_ReadByte(&cl_message);
1143         if (bits & E_GLOWSIZE)
1144                 e->glowsize = MSG_ReadByte(&cl_message);
1145         if (bits & E_GLOWCOLOR)
1146                 e->glowcolor = MSG_ReadByte(&cl_message);
1147         if (cls.protocol == PROTOCOL_DARKPLACES2)
1148                 if (bits & E_FLAGS)
1149                         e->flags = MSG_ReadByte(&cl_message);
1150         if (bits & E_TAGATTACHMENT)
1151         {
1152                 e->tagentity = (unsigned short) MSG_ReadShort(&cl_message);
1153                 e->tagindex = MSG_ReadByte(&cl_message);
1154         }
1155         if (bits & E_LIGHT)
1156         {
1157                 e->light[0] = (unsigned short) MSG_ReadShort(&cl_message);
1158                 e->light[1] = (unsigned short) MSG_ReadShort(&cl_message);
1159                 e->light[2] = (unsigned short) MSG_ReadShort(&cl_message);
1160                 e->light[3] = (unsigned short) MSG_ReadShort(&cl_message);
1161         }
1162         if (bits & E_LIGHTSTYLE)
1163                 e->lightstyle = MSG_ReadByte(&cl_message);
1164         if (bits & E_LIGHTPFLAGS)
1165                 e->lightpflags = MSG_ReadByte(&cl_message);
1166
1167         if (developer_networkentities.integer >= 2)
1168         {
1169                 Con_Printf("ReadFields e%i", e->number);
1170
1171                 if (bits & E_ORIGIN1)
1172                         Con_Printf(" E_ORIGIN1 %f", e->origin[0]);
1173                 if (bits & E_ORIGIN2)
1174                         Con_Printf(" E_ORIGIN2 %f", e->origin[1]);
1175                 if (bits & E_ORIGIN3)
1176                         Con_Printf(" E_ORIGIN3 %f", e->origin[2]);
1177                 if (bits & E_ANGLE1)
1178                         Con_Printf(" E_ANGLE1 %f", e->angles[0]);
1179                 if (bits & E_ANGLE2)
1180                         Con_Printf(" E_ANGLE2 %f", e->angles[1]);
1181                 if (bits & E_ANGLE3)
1182                         Con_Printf(" E_ANGLE3 %f", e->angles[2]);
1183                 if (bits & (E_MODEL1 | E_MODEL2))
1184                         Con_Printf(" E_MODEL %i", e->modelindex);
1185
1186                 if (bits & (E_FRAME1 | E_FRAME2))
1187                         Con_Printf(" E_FRAME %i", e->frame);
1188                 if (bits & (E_EFFECTS1 | E_EFFECTS2))
1189                         Con_Printf(" E_EFFECTS %i", e->effects);
1190                 if (bits & E_ALPHA)
1191                         Con_Printf(" E_ALPHA %f", e->alpha / 255.0f);
1192                 if (bits & E_SCALE)
1193                         Con_Printf(" E_SCALE %f", e->scale / 16.0f);
1194                 if (bits & E_COLORMAP)
1195                         Con_Printf(" E_COLORMAP %i", e->colormap);
1196                 if (bits & E_SKIN)
1197                         Con_Printf(" E_SKIN %i", e->skin);
1198
1199                 if (bits & E_GLOWSIZE)
1200                         Con_Printf(" E_GLOWSIZE %i", e->glowsize * 4);
1201                 if (bits & E_GLOWCOLOR)
1202                         Con_Printf(" E_GLOWCOLOR %i", e->glowcolor);
1203
1204                 if (bits & E_LIGHT)
1205                         Con_Printf(" E_LIGHT %i:%i:%i:%i", e->light[0], e->light[1], e->light[2], e->light[3]);
1206                 if (bits & E_LIGHTPFLAGS)
1207                         Con_Printf(" E_LIGHTPFLAGS %i", e->lightpflags);
1208
1209                 if (bits & E_TAGATTACHMENT)
1210                         Con_Printf(" E_TAGATTACHMENT e%i:%i", e->tagentity, e->tagindex);
1211                 if (bits & E_LIGHTSTYLE)
1212                         Con_Printf(" E_LIGHTSTYLE %i", e->lightstyle);
1213                 Con_Print("\n");
1214         }
1215 }
1216
1217 // (client and server) allocates a new empty database
1218 entityframe_database_t *EntityFrame_AllocDatabase(mempool_t *mempool)
1219 {
1220         return (entityframe_database_t *)Mem_Alloc(mempool, sizeof(entityframe_database_t));
1221 }
1222
1223 // (client and server) frees the database
1224 void EntityFrame_FreeDatabase(entityframe_database_t *d)
1225 {
1226         Mem_Free(d);
1227 }
1228
1229 // (server) clears the database to contain no frames (thus delta compression compresses against nothing)
1230 void EntityFrame_ClearDatabase(entityframe_database_t *d)
1231 {
1232         memset(d, 0, sizeof(*d));
1233 }
1234
1235 // (server and client) removes frames older than 'frame' from database
1236 void EntityFrame_AckFrame(entityframe_database_t *d, int frame)
1237 {
1238         int i;
1239         d->ackframenum = frame;
1240         for (i = 0;i < d->numframes && d->frames[i].framenum < frame;i++);
1241         // ignore outdated frame acks (out of order packets)
1242         if (i == 0)
1243                 return;
1244         d->numframes -= i;
1245         // if some queue is left, slide it down to beginning of array
1246         if (d->numframes)
1247                 memmove(&d->frames[0], &d->frames[i], sizeof(d->frames[0]) * d->numframes);
1248 }
1249
1250 // (server) clears frame, to prepare for adding entities
1251 void EntityFrame_Clear(entity_frame_t *f, vec3_t eye, int framenum)
1252 {
1253         f->time = 0;
1254         f->framenum = framenum;
1255         f->numentities = 0;
1256         if (eye == NULL)
1257                 VectorClear(f->eye);
1258         else
1259                 VectorCopy(eye, f->eye);
1260 }
1261
1262 // (server and client) reads a frame from the database
1263 void EntityFrame_FetchFrame(entityframe_database_t *d, int framenum, entity_frame_t *f)
1264 {
1265         int i, n;
1266         EntityFrame_Clear(f, NULL, -1);
1267         for (i = 0;i < d->numframes && d->frames[i].framenum < framenum;i++);
1268         if (i < d->numframes && framenum == d->frames[i].framenum)
1269         {
1270                 f->framenum = framenum;
1271                 f->numentities = d->frames[i].endentity - d->frames[i].firstentity;
1272                 n = MAX_ENTITY_DATABASE - (d->frames[i].firstentity % MAX_ENTITY_DATABASE);
1273                 if (n > f->numentities)
1274                         n = f->numentities;
1275                 memcpy(f->entitydata, d->entitydata + d->frames[i].firstentity % MAX_ENTITY_DATABASE, sizeof(*f->entitydata) * n);
1276                 if (f->numentities > n)
1277                         memcpy(f->entitydata + n, d->entitydata, sizeof(*f->entitydata) * (f->numentities - n));
1278                 VectorCopy(d->eye, f->eye);
1279         }
1280 }
1281
1282 // (client) adds a entity_frame to the database, for future reference
1283 void EntityFrame_AddFrame_Client(entityframe_database_t *d, vec3_t eye, int framenum, int numentities, const entity_state_t *entitydata)
1284 {
1285         int n, e;
1286         entity_frameinfo_t *info;
1287
1288         VectorCopy(eye, d->eye);
1289
1290         // figure out how many entity slots are used already
1291         if (d->numframes)
1292         {
1293                 n = d->frames[d->numframes - 1].endentity - d->frames[0].firstentity;
1294                 if (n + numentities > MAX_ENTITY_DATABASE || d->numframes >= MAX_ENTITY_HISTORY)
1295                 {
1296                         // ran out of room, dump database
1297                         EntityFrame_ClearDatabase(d);
1298                 }
1299         }
1300
1301         info = &d->frames[d->numframes];
1302         info->framenum = framenum;
1303         e = -1000;
1304         // make sure we check the newly added frame as well, but we haven't incremented numframes yet
1305         for (n = 0;n <= d->numframes;n++)
1306         {
1307                 if (e >= d->frames[n].framenum)
1308                 {
1309                         if (e == framenum)
1310                                 Con_Print("EntityFrame_AddFrame: tried to add out of sequence frame to database\n");
1311                         else
1312                                 Con_Print("EntityFrame_AddFrame: out of sequence frames in database\n");
1313                         return;
1314                 }
1315                 e = d->frames[n].framenum;
1316         }
1317         // if database still has frames after that...
1318         if (d->numframes)
1319                 info->firstentity = d->frames[d->numframes - 1].endentity;
1320         else
1321                 info->firstentity = 0;
1322         info->endentity = info->firstentity + numentities;
1323         d->numframes++;
1324
1325         n = info->firstentity % MAX_ENTITY_DATABASE;
1326         e = MAX_ENTITY_DATABASE - n;
1327         if (e > numentities)
1328                 e = numentities;
1329         memcpy(d->entitydata + n, entitydata, sizeof(entity_state_t) * e);
1330         if (numentities > e)
1331                 memcpy(d->entitydata, entitydata + e, sizeof(entity_state_t) * (numentities - e));
1332 }
1333
1334 // (server) adds a entity_frame to the database, for future reference
1335 void EntityFrame_AddFrame_Server(entityframe_database_t *d, vec3_t eye, int framenum, int numentities, const entity_state_t **entitydata)
1336 {
1337         int n, e;
1338         entity_frameinfo_t *info;
1339
1340         VectorCopy(eye, d->eye);
1341
1342         // figure out how many entity slots are used already
1343         if (d->numframes)
1344         {
1345                 n = d->frames[d->numframes - 1].endentity - d->frames[0].firstentity;
1346                 if (n + numentities > MAX_ENTITY_DATABASE || d->numframes >= MAX_ENTITY_HISTORY)
1347                 {
1348                         // ran out of room, dump database
1349                         EntityFrame_ClearDatabase(d);
1350                 }
1351         }
1352
1353         info = &d->frames[d->numframes];
1354         info->framenum = framenum;
1355         e = -1000;
1356         // make sure we check the newly added frame as well, but we haven't incremented numframes yet
1357         for (n = 0;n <= d->numframes;n++)
1358         {
1359                 if (e >= d->frames[n].framenum)
1360                 {
1361                         if (e == framenum)
1362                                 Con_Print("EntityFrame_AddFrame: tried to add out of sequence frame to database\n");
1363                         else
1364                                 Con_Print("EntityFrame_AddFrame: out of sequence frames in database\n");
1365                         return;
1366                 }
1367                 e = d->frames[n].framenum;
1368         }
1369         // if database still has frames after that...
1370         if (d->numframes)
1371                 info->firstentity = d->frames[d->numframes - 1].endentity;
1372         else
1373                 info->firstentity = 0;
1374         info->endentity = info->firstentity + numentities;
1375         d->numframes++;
1376
1377         n = info->firstentity % MAX_ENTITY_DATABASE;
1378         e = MAX_ENTITY_DATABASE - n;
1379         if (e > numentities)
1380                 e = numentities;
1381         memcpy(d->entitydata + n, entitydata, sizeof(entity_state_t) * e);
1382         if (numentities > e)
1383                 memcpy(d->entitydata, entitydata + e, sizeof(entity_state_t) * (numentities - e));
1384 }
1385
1386 // (server) writes a frame to network stream
1387 qboolean EntityFrame_WriteFrame(sizebuf_t *msg, int maxsize, entityframe_database_t *d, int numstates, const entity_state_t **states, int viewentnum)
1388 {
1389         prvm_prog_t *prog = SVVM_prog;
1390         int i, onum, number;
1391         entity_frame_t *o = &d->deltaframe;
1392         const entity_state_t *ent, *delta;
1393         vec3_t eye;
1394
1395         d->latestframenum++;
1396
1397         VectorClear(eye);
1398         for (i = 0;i < numstates;i++)
1399         {
1400                 ent = states[i];
1401                 if (ent->number == viewentnum)
1402                 {
1403                         VectorSet(eye, ent->origin[0], ent->origin[1], ent->origin[2] + 22);
1404                         break;
1405                 }
1406         }
1407
1408         EntityFrame_AddFrame_Server(d, eye, d->latestframenum, numstates, states);
1409
1410         EntityFrame_FetchFrame(d, d->ackframenum, o);
1411
1412         MSG_WriteByte (msg, svc_entities);
1413         MSG_WriteLong (msg, o->framenum);
1414         MSG_WriteLong (msg, d->latestframenum);
1415         MSG_WriteFloat (msg, eye[0]);
1416         MSG_WriteFloat (msg, eye[1]);
1417         MSG_WriteFloat (msg, eye[2]);
1418
1419         onum = 0;
1420         for (i = 0;i < numstates;i++)
1421         {
1422                 ent = states[i];
1423                 number = ent->number;
1424
1425                 if (PRVM_serveredictfunction((&prog->edicts[number]), SendEntity))
1426                         continue;
1427                 for (;onum < o->numentities && o->entitydata[onum].number < number;onum++)
1428                 {
1429                         // write remove message
1430                         MSG_WriteShort(msg, o->entitydata[onum].number | 0x8000);
1431                 }
1432                 if (onum < o->numentities && (o->entitydata[onum].number == number))
1433                 {
1434                         // delta from previous frame
1435                         delta = o->entitydata + onum;
1436                         // advance to next entity in delta frame
1437                         onum++;
1438                 }
1439                 else
1440                 {
1441                         // delta from defaults
1442                         delta = &defaultstate;
1443                 }
1444                 EntityState_WriteUpdate(ent, msg, delta);
1445         }
1446         for (;onum < o->numentities;onum++)
1447         {
1448                 // write remove message
1449                 MSG_WriteShort(msg, o->entitydata[onum].number | 0x8000);
1450         }
1451         MSG_WriteShort(msg, 0xFFFF);
1452
1453         return true;
1454 }
1455
1456 // (client) reads a frame from network stream
1457 void EntityFrame_CL_ReadFrame(void)
1458 {
1459         int i, number, removed;
1460         entity_frame_t *f, *delta;
1461         entity_state_t *e, *old, *oldend;
1462         entity_t *ent;
1463         entityframe_database_t *d;
1464         if (!cl.entitydatabase)
1465                 cl.entitydatabase = EntityFrame_AllocDatabase(cls.levelmempool);
1466         d = cl.entitydatabase;
1467         f = &d->framedata;
1468         delta = &d->deltaframe;
1469
1470         EntityFrame_Clear(f, NULL, -1);
1471
1472         // read the frame header info
1473         f->time = cl.mtime[0];
1474         number = MSG_ReadLong(&cl_message);
1475         f->framenum = MSG_ReadLong(&cl_message);
1476         CL_NewFrameReceived(f->framenum);
1477         f->eye[0] = MSG_ReadFloat(&cl_message);
1478         f->eye[1] = MSG_ReadFloat(&cl_message);
1479         f->eye[2] = MSG_ReadFloat(&cl_message);
1480         EntityFrame_AckFrame(d, number);
1481         EntityFrame_FetchFrame(d, number, delta);
1482         old = delta->entitydata;
1483         oldend = old + delta->numentities;
1484         // read entities until we hit the magic 0xFFFF end tag
1485         while ((number = (unsigned short) MSG_ReadShort(&cl_message)) != 0xFFFF && !cl_message.badread)
1486         {
1487                 if (cl_message.badread)
1488                         Host_Error("EntityFrame_Read: read error");
1489                 removed = number & 0x8000;
1490                 number &= 0x7FFF;
1491                 if (number >= MAX_EDICTS)
1492                         Host_Error("EntityFrame_Read: number (%i) >= MAX_EDICTS (%i)", number, MAX_EDICTS);
1493
1494                 // seek to entity, while copying any skipped entities (assume unchanged)
1495                 while (old < oldend && old->number < number)
1496                 {
1497                         if (f->numentities >= MAX_ENTITY_DATABASE)
1498                                 Host_Error("EntityFrame_Read: entity list too big");
1499                         f->entitydata[f->numentities] = *old++;
1500                         f->entitydata[f->numentities++].time = cl.mtime[0];
1501                 }
1502                 if (removed)
1503                 {
1504                         if (old < oldend && old->number == number)
1505                                 old++;
1506                         else
1507                                 Con_Printf("EntityFrame_Read: REMOVE on unused entity %i\n", number);
1508                 }
1509                 else
1510                 {
1511                         if (f->numentities >= MAX_ENTITY_DATABASE)
1512                                 Host_Error("EntityFrame_Read: entity list too big");
1513
1514                         // reserve this slot
1515                         e = f->entitydata + f->numentities++;
1516
1517                         if (old < oldend && old->number == number)
1518                         {
1519                                 // delta from old entity
1520                                 *e = *old++;
1521                         }
1522                         else
1523                         {
1524                                 // delta from defaults
1525                                 *e = defaultstate;
1526                         }
1527
1528                         if (cl.num_entities <= number)
1529                         {
1530                                 cl.num_entities = number + 1;
1531                                 if (number >= cl.max_entities)
1532                                         CL_ExpandEntities(number);
1533                         }
1534                         cl.entities_active[number] = true;
1535                         e->active = ACTIVE_NETWORK;
1536                         e->time = cl.mtime[0];
1537                         e->number = number;
1538                         EntityState_ReadFields(e, EntityState_ReadExtendBits());
1539                 }
1540         }
1541         while (old < oldend)
1542         {
1543                 if (f->numentities >= MAX_ENTITY_DATABASE)
1544                         Host_Error("EntityFrame_Read: entity list too big");
1545                 f->entitydata[f->numentities] = *old++;
1546                 f->entitydata[f->numentities++].time = cl.mtime[0];
1547         }
1548         EntityFrame_AddFrame_Client(d, f->eye, f->framenum, f->numentities, f->entitydata);
1549
1550         memset(cl.entities_active, 0, cl.num_entities * sizeof(unsigned char));
1551         number = 1;
1552         for (i = 0;i < f->numentities;i++)
1553         {
1554                 for (;number < f->entitydata[i].number && number < cl.num_entities;number++)
1555                 {
1556                         if (cl.entities_active[number])
1557                         {
1558                                 cl.entities_active[number] = false;
1559                                 cl.entities[number].state_current.active = ACTIVE_NOT;
1560                         }
1561                 }
1562                 if (number >= cl.num_entities)
1563                         break;
1564                 // update the entity
1565                 ent = &cl.entities[number];
1566                 ent->state_previous = ent->state_current;
1567                 ent->state_current = f->entitydata[i];
1568                 CL_MoveLerpEntityStates(ent);
1569                 // the entity lives again...
1570                 cl.entities_active[number] = true;
1571                 number++;
1572         }
1573         for (;number < cl.num_entities;number++)
1574         {
1575                 if (cl.entities_active[number])
1576                 {
1577                         cl.entities_active[number] = false;
1578                         cl.entities[number].state_current.active = ACTIVE_NOT;
1579                 }
1580         }
1581 }
1582
1583
1584 // (client) returns the frame number of the most recent frame recieved
1585 int EntityFrame_MostRecentlyRecievedFrameNum(entityframe_database_t *d)
1586 {
1587         if (d->numframes)
1588                 return d->frames[d->numframes - 1].framenum;
1589         else
1590                 return -1;
1591 }
1592
1593
1594
1595
1596
1597
1598 entity_state_t *EntityFrame4_GetReferenceEntity(entityframe4_database_t *d, int number)
1599 {
1600         if (d->maxreferenceentities <= number)
1601         {
1602                 int oldmax = d->maxreferenceentities;
1603                 entity_state_t *oldentity = d->referenceentity;
1604                 d->maxreferenceentities = (number + 15) & ~7;
1605                 d->referenceentity = (entity_state_t *)Mem_Alloc(d->mempool, d->maxreferenceentities * sizeof(*d->referenceentity));
1606                 if (oldentity)
1607                 {
1608                         memcpy(d->referenceentity, oldentity, oldmax * sizeof(*d->referenceentity));
1609                         Mem_Free(oldentity);
1610                 }
1611                 // clear the newly created entities
1612                 for (;oldmax < d->maxreferenceentities;oldmax++)
1613                 {
1614                         d->referenceentity[oldmax] = defaultstate;
1615                         d->referenceentity[oldmax].number = oldmax;
1616                 }
1617         }
1618         return d->referenceentity + number;
1619 }
1620
1621 void EntityFrame4_AddCommitEntity(entityframe4_database_t *d, const entity_state_t *s)
1622 {
1623         // resize commit's entity list if full
1624         if (d->currentcommit->maxentities <= d->currentcommit->numentities)
1625         {
1626                 entity_state_t *oldentity = d->currentcommit->entity;
1627                 d->currentcommit->maxentities += 8;
1628                 d->currentcommit->entity = (entity_state_t *)Mem_Alloc(d->mempool, d->currentcommit->maxentities * sizeof(*d->currentcommit->entity));
1629                 if (oldentity)
1630                 {
1631                         memcpy(d->currentcommit->entity, oldentity, d->currentcommit->numentities * sizeof(*d->currentcommit->entity));
1632                         Mem_Free(oldentity);
1633                 }
1634         }
1635         d->currentcommit->entity[d->currentcommit->numentities++] = *s;
1636 }
1637
1638 entityframe4_database_t *EntityFrame4_AllocDatabase(mempool_t *pool)
1639 {
1640         entityframe4_database_t *d;
1641         d = (entityframe4_database_t *)Mem_Alloc(pool, sizeof(*d));
1642         d->mempool = pool;
1643         EntityFrame4_ResetDatabase(d);
1644         return d;
1645 }
1646
1647 void EntityFrame4_FreeDatabase(entityframe4_database_t *d)
1648 {
1649         int i;
1650         for (i = 0;i < MAX_ENTITY_HISTORY;i++)
1651                 if (d->commit[i].entity)
1652                         Mem_Free(d->commit[i].entity);
1653         if (d->referenceentity)
1654                 Mem_Free(d->referenceentity);
1655         Mem_Free(d);
1656 }
1657
1658 void EntityFrame4_ResetDatabase(entityframe4_database_t *d)
1659 {
1660         int i;
1661         d->referenceframenum = -1;
1662         for (i = 0;i < MAX_ENTITY_HISTORY;i++)
1663                 d->commit[i].numentities = 0;
1664         for (i = 0;i < d->maxreferenceentities;i++)
1665                 d->referenceentity[i] = defaultstate;
1666 }
1667
1668 int EntityFrame4_AckFrame(entityframe4_database_t *d, int framenum, int servermode)
1669 {
1670         int i, j, found;
1671         entity_database4_commit_t *commit;
1672         if (framenum == -1)
1673         {
1674                 // reset reference, but leave commits alone
1675                 d->referenceframenum = -1;
1676                 for (i = 0;i < d->maxreferenceentities;i++)
1677                         d->referenceentity[i] = defaultstate;
1678                 // if this is the server, remove commits
1679                         for (i = 0, commit = d->commit;i < MAX_ENTITY_HISTORY;i++, commit++)
1680                                 commit->numentities = 0;
1681                 found = true;
1682         }
1683         else if (d->referenceframenum == framenum)
1684                 found = true;
1685         else
1686         {
1687                 found = false;
1688                 for (i = 0, commit = d->commit;i < MAX_ENTITY_HISTORY;i++, commit++)
1689                 {
1690                         if (commit->numentities && commit->framenum <= framenum)
1691                         {
1692                                 if (commit->framenum == framenum)
1693                                 {
1694                                         found = true;
1695                                         d->referenceframenum = framenum;
1696                                         if (developer_networkentities.integer >= 3)
1697                                         {
1698                                                 for (j = 0;j < commit->numentities;j++)
1699                                                 {
1700                                                         entity_state_t *s = EntityFrame4_GetReferenceEntity(d, commit->entity[j].number);
1701                                                         if (commit->entity[j].active != s->active)
1702                                                         {
1703                                                                 if (commit->entity[j].active == ACTIVE_NETWORK)
1704                                                                         Con_Printf("commit entity %i has become active (modelindex %i)\n", commit->entity[j].number, commit->entity[j].modelindex);
1705                                                                 else
1706                                                                         Con_Printf("commit entity %i has become inactive (modelindex %i)\n", commit->entity[j].number, commit->entity[j].modelindex);
1707                                                         }
1708                                                         *s = commit->entity[j];
1709                                                 }
1710                                         }
1711                                         else
1712                                                 for (j = 0;j < commit->numentities;j++)
1713                                                         *EntityFrame4_GetReferenceEntity(d, commit->entity[j].number) = commit->entity[j];
1714                                 }
1715                                 commit->numentities = 0;
1716                         }
1717                 }
1718         }
1719         if (developer_networkentities.integer >= 1)
1720         {
1721                 Con_Printf("ack ref:%i database updated to: ref:%i commits:", framenum, d->referenceframenum);
1722                 for (i = 0;i < MAX_ENTITY_HISTORY;i++)
1723                         if (d->commit[i].numentities)
1724                                 Con_Printf(" %i", d->commit[i].framenum);
1725                 Con_Print("\n");
1726         }
1727         return found;
1728 }
1729
1730 void EntityFrame4_CL_ReadFrame(void)
1731 {
1732         int i, n, cnumber, referenceframenum, framenum, enumber, done, stopnumber, skip = false;
1733         entity_state_t *s;
1734         entityframe4_database_t *d;
1735         if (!cl.entitydatabase4)
1736                 cl.entitydatabase4 = EntityFrame4_AllocDatabase(cls.levelmempool);
1737         d = cl.entitydatabase4;
1738         // read the number of the frame this refers to
1739         referenceframenum = MSG_ReadLong(&cl_message);
1740         // read the number of this frame
1741         framenum = MSG_ReadLong(&cl_message);
1742         CL_NewFrameReceived(framenum);
1743         // read the start number
1744         enumber = (unsigned short) MSG_ReadShort(&cl_message);
1745         if (developer_networkentities.integer >= 10)
1746         {
1747                 Con_Printf("recv svc_entities num:%i ref:%i database: ref:%i commits:", framenum, referenceframenum, d->referenceframenum);
1748                 for (i = 0;i < MAX_ENTITY_HISTORY;i++)
1749                         if (d->commit[i].numentities)
1750                                 Con_Printf(" %i", d->commit[i].framenum);
1751                 Con_Print("\n");
1752         }
1753         if (!EntityFrame4_AckFrame(d, referenceframenum, false))
1754         {
1755                 Con_Print("EntityFrame4_CL_ReadFrame: reference frame invalid (VERY BAD ERROR), this update will be skipped\n");
1756                 skip = true;
1757         }
1758         d->currentcommit = NULL;
1759         for (i = 0;i < MAX_ENTITY_HISTORY;i++)
1760         {
1761                 if (!d->commit[i].numentities)
1762                 {
1763                         d->currentcommit = d->commit + i;
1764                         d->currentcommit->framenum = framenum;
1765                         d->currentcommit->numentities = 0;
1766                 }
1767         }
1768         if (d->currentcommit == NULL)
1769         {
1770                 Con_Printf("EntityFrame4_CL_ReadFrame: error while decoding frame %i: database full, reading but not storing this update\n", framenum);
1771                 skip = true;
1772         }
1773         done = false;
1774         while (!done && !cl_message.badread)
1775         {
1776                 // read the number of the modified entity
1777                 // (gaps will be copied unmodified)
1778                 n = (unsigned short)MSG_ReadShort(&cl_message);
1779                 if (n == 0x8000)
1780                 {
1781                         // no more entities in this update, but we still need to copy the
1782                         // rest of the reference entities (final gap)
1783                         done = true;
1784                         // read end of range number, then process normally
1785                         n = (unsigned short)MSG_ReadShort(&cl_message);
1786                 }
1787                 // high bit means it's a remove message
1788                 cnumber = n & 0x7FFF;
1789                 // if this is a live entity we may need to expand the array
1790                 if (cl.num_entities <= cnumber && !(n & 0x8000))
1791                 {
1792                         cl.num_entities = cnumber + 1;
1793                         if (cnumber >= cl.max_entities)
1794                                 CL_ExpandEntities(cnumber);
1795                 }
1796                 // add one (the changed one) if not done
1797                 stopnumber = cnumber + !done;
1798                 // process entities in range from the last one to the changed one
1799                 for (;enumber < stopnumber;enumber++)
1800                 {
1801                         if (skip || enumber >= cl.num_entities)
1802                         {
1803                                 if (enumber == cnumber && (n & 0x8000) == 0)
1804                                 {
1805                                         entity_state_t tempstate;
1806                                         EntityState_ReadFields(&tempstate, EntityState_ReadExtendBits());
1807                                 }
1808                                 continue;
1809                         }
1810                         // slide the current into the previous slot
1811                         cl.entities[enumber].state_previous = cl.entities[enumber].state_current;
1812                         // copy a new current from reference database
1813                         cl.entities[enumber].state_current = *EntityFrame4_GetReferenceEntity(d, enumber);
1814                         s = &cl.entities[enumber].state_current;
1815                         // if this is the one to modify, read more data...
1816                         if (enumber == cnumber)
1817                         {
1818                                 if (n & 0x8000)
1819                                 {
1820                                         // simply removed
1821                                         if (developer_networkentities.integer >= 2)
1822                                                 Con_Printf("entity %i: remove\n", enumber);
1823                                         *s = defaultstate;
1824                                 }
1825                                 else
1826                                 {
1827                                         // read the changes
1828                                         if (developer_networkentities.integer >= 2)
1829                                                 Con_Printf("entity %i: update\n", enumber);
1830                                         s->active = ACTIVE_NETWORK;
1831                                         EntityState_ReadFields(s, EntityState_ReadExtendBits());
1832                                 }
1833                         }
1834                         else if (developer_networkentities.integer >= 4)
1835                                 Con_Printf("entity %i: copy\n", enumber);
1836                         // set the cl.entities_active flag
1837                         cl.entities_active[enumber] = (s->active == ACTIVE_NETWORK);
1838                         // set the update time
1839                         s->time = cl.mtime[0];
1840                         // fix the number (it gets wiped occasionally by copying from defaultstate)
1841                         s->number = enumber;
1842                         // check if we need to update the lerp stuff
1843                         if (s->active == ACTIVE_NETWORK)
1844                                 CL_MoveLerpEntityStates(&cl.entities[enumber]);
1845                         // add this to the commit entry whether it is modified or not
1846                         if (d->currentcommit)
1847                                 EntityFrame4_AddCommitEntity(d, &cl.entities[enumber].state_current);
1848                         // print extra messages if desired
1849                         if (developer_networkentities.integer >= 2 && cl.entities[enumber].state_current.active != cl.entities[enumber].state_previous.active)
1850                         {
1851                                 if (cl.entities[enumber].state_current.active == ACTIVE_NETWORK)
1852                                         Con_Printf("entity #%i has become active\n", enumber);
1853                                 else if (cl.entities[enumber].state_previous.active)
1854                                         Con_Printf("entity #%i has become inactive\n", enumber);
1855                         }
1856                 }
1857         }
1858         d->currentcommit = NULL;
1859         if (skip)
1860                 EntityFrame4_ResetDatabase(d);
1861 }
1862
1863 qboolean EntityFrame4_WriteFrame(sizebuf_t *msg, int maxsize, entityframe4_database_t *d, int numstates, const entity_state_t **states)
1864 {
1865         prvm_prog_t *prog = SVVM_prog;
1866         const entity_state_t *e, *s;
1867         entity_state_t inactiveentitystate;
1868         int i, n, startnumber;
1869         sizebuf_t buf;
1870         unsigned char data[128];
1871
1872         // if there isn't enough space to accomplish anything, skip it
1873         if (msg->cursize + 24 > maxsize)
1874                 return false;
1875
1876         // prepare the buffer
1877         memset(&buf, 0, sizeof(buf));
1878         buf.data = data;
1879         buf.maxsize = sizeof(data);
1880
1881         for (i = 0;i < MAX_ENTITY_HISTORY;i++)
1882                 if (!d->commit[i].numentities)
1883                         break;
1884         // if commit buffer full, just don't bother writing an update this frame
1885         if (i == MAX_ENTITY_HISTORY)
1886                 return false;
1887         d->currentcommit = d->commit + i;
1888
1889         // this state's number gets played around with later
1890         inactiveentitystate = defaultstate;
1891
1892         d->currentcommit->numentities = 0;
1893         d->currentcommit->framenum = ++d->latestframenumber;
1894         MSG_WriteByte(msg, svc_entities);
1895         MSG_WriteLong(msg, d->referenceframenum);
1896         MSG_WriteLong(msg, d->currentcommit->framenum);
1897         if (developer_networkentities.integer >= 10)
1898         {
1899                 Con_Printf("send svc_entities num:%i ref:%i (database: ref:%i commits:", d->currentcommit->framenum, d->referenceframenum, d->referenceframenum);
1900                 for (i = 0;i < MAX_ENTITY_HISTORY;i++)
1901                         if (d->commit[i].numentities)
1902                                 Con_Printf(" %i", d->commit[i].framenum);
1903                 Con_Print(")\n");
1904         }
1905         if (d->currententitynumber >= prog->max_edicts)
1906                 startnumber = 1;
1907         else
1908                 startnumber = bound(1, d->currententitynumber, prog->max_edicts - 1);
1909         MSG_WriteShort(msg, startnumber);
1910         // reset currententitynumber so if the loop does not break it we will
1911         // start at beginning next frame (if it does break, it will set it)
1912         d->currententitynumber = 1;
1913         for (i = 0, n = startnumber;n < prog->max_edicts;n++)
1914         {
1915                 if (PRVM_serveredictfunction((&prog->edicts[n]), SendEntity))
1916                         continue;
1917                 // find the old state to delta from
1918                 e = EntityFrame4_GetReferenceEntity(d, n);
1919                 // prepare the buffer
1920                 SZ_Clear(&buf);
1921                 // entity exists, build an update (if empty there is no change)
1922                 // find the state in the list
1923                 for (;i < numstates && states[i]->number < n;i++);
1924                 // make the message
1925                 s = states[i];
1926                 if (s->number == n)
1927                 {
1928                         // build the update
1929                         EntityState_WriteUpdate(s, &buf, e);
1930                 }
1931                 else
1932                 {
1933                         inactiveentitystate.number = n;
1934                         s = &inactiveentitystate;
1935                         if (e->active == ACTIVE_NETWORK)
1936                         {
1937                                 // entity used to exist but doesn't anymore, send remove
1938                                 MSG_WriteShort(&buf, n | 0x8000);
1939                         }
1940                 }
1941                 // if the commit is full, we're done this frame
1942                 if (msg->cursize + buf.cursize > maxsize - 4)
1943                 {
1944                         // next frame we will continue where we left off
1945                         break;
1946                 }
1947                 // add the entity to the commit
1948                 EntityFrame4_AddCommitEntity(d, s);
1949                 // if the message is empty, skip out now
1950                 if (buf.cursize)
1951                 {
1952                         // write the message to the packet
1953                         SZ_Write(msg, buf.data, buf.cursize);
1954                 }
1955         }
1956         d->currententitynumber = n;
1957
1958         // remove world message (invalid, and thus a good terminator)
1959         MSG_WriteShort(msg, 0x8000);
1960         // write the number of the end entity
1961         MSG_WriteShort(msg, d->currententitynumber);
1962         // just to be sure
1963         d->currentcommit = NULL;
1964
1965         return true;
1966 }
1967
1968
1969
1970
1971 entityframe5_database_t *EntityFrame5_AllocDatabase(mempool_t *pool)
1972 {
1973         int i;
1974         entityframe5_database_t *d;
1975         d = (entityframe5_database_t *)Mem_Alloc(pool, sizeof(*d));
1976         d->latestframenum = 0;
1977         for (i = 0;i < d->maxedicts;i++)
1978                 d->states[i] = defaultstate;
1979         return d;
1980 }
1981
1982 void EntityFrame5_FreeDatabase(entityframe5_database_t *d)
1983 {
1984         // all the [maxedicts] memory is allocated at once, so there's only one
1985         // thing to free
1986         if (d->maxedicts)
1987                 Mem_Free(d->deltabits);
1988         Mem_Free(d);
1989 }
1990
1991 static void EntityFrame5_ExpandEdicts(entityframe5_database_t *d, int newmax)
1992 {
1993         if (d->maxedicts < newmax)
1994         {
1995                 unsigned char *data;
1996                 int oldmaxedicts = d->maxedicts;
1997                 int *olddeltabits = d->deltabits;
1998                 unsigned char *oldpriorities = d->priorities;
1999                 int *oldupdateframenum = d->updateframenum;
2000                 entity_state_t *oldstates = d->states;
2001                 unsigned char *oldvisiblebits = d->visiblebits;
2002                 d->maxedicts = newmax;
2003                 data = (unsigned char *)Mem_Alloc(sv_mempool, d->maxedicts * sizeof(int) + d->maxedicts * sizeof(unsigned char) + d->maxedicts * sizeof(int) + d->maxedicts * sizeof(entity_state_t) + (d->maxedicts+7)/8 * sizeof(unsigned char));
2004                 d->deltabits = (int *)data;data += d->maxedicts * sizeof(int);
2005                 d->priorities = (unsigned char *)data;data += d->maxedicts * sizeof(unsigned char);
2006                 d->updateframenum = (int *)data;data += d->maxedicts * sizeof(int);
2007                 d->states = (entity_state_t *)data;data += d->maxedicts * sizeof(entity_state_t);
2008                 d->visiblebits = (unsigned char *)data;data += (d->maxedicts+7)/8 * sizeof(unsigned char);
2009                 if (oldmaxedicts)
2010                 {
2011                         memcpy(d->deltabits, olddeltabits, oldmaxedicts * sizeof(int));
2012                         memcpy(d->priorities, oldpriorities, oldmaxedicts * sizeof(unsigned char));
2013                         memcpy(d->updateframenum, oldupdateframenum, oldmaxedicts * sizeof(int));
2014                         memcpy(d->states, oldstates, oldmaxedicts * sizeof(entity_state_t));
2015                         memcpy(d->visiblebits, oldvisiblebits, (oldmaxedicts+7)/8 * sizeof(unsigned char));
2016                         // the previous buffers were a single allocation, so just one free
2017                         Mem_Free(olddeltabits);
2018                 }
2019         }
2020 }
2021
2022 static int EntityState5_Priority(entityframe5_database_t *d, int stateindex)
2023 {
2024         int limit, priority;
2025         entity_state_t *s = NULL; // hush compiler warning by initializing this
2026         // if it is the player, update urgently
2027         if (stateindex == d->viewentnum)
2028                 return ENTITYFRAME5_PRIORITYLEVELS - 1;
2029         // priority increases each frame no matter what happens
2030         priority = d->priorities[stateindex] + 1;
2031         // players get an extra priority boost
2032         if (stateindex <= svs.maxclients)
2033                 priority++;
2034         // remove dead entities very quickly because they are just 2 bytes
2035         if (d->states[stateindex].active != ACTIVE_NETWORK)
2036         {
2037                 priority++;
2038                 return bound(1, priority, ENTITYFRAME5_PRIORITYLEVELS - 1);
2039         }
2040         // certain changes are more noticable than others
2041         if (d->deltabits[stateindex] & (E5_FULLUPDATE | E5_ATTACHMENT | E5_MODEL | E5_FLAGS | E5_COLORMAP))
2042                 priority++;
2043         // find the root entity this one is attached to, and judge relevance by it
2044         for (limit = 0;limit < 256;limit++)
2045         {
2046                 s = d->states + stateindex;
2047                 if (s->flags & RENDER_VIEWMODEL)
2048                         stateindex = d->viewentnum;
2049                 else if (s->tagentity)
2050                         stateindex = s->tagentity;
2051                 else
2052                         break;
2053                 if (d->maxedicts < stateindex)
2054                         EntityFrame5_ExpandEdicts(d, (stateindex+256)&~255);
2055         }
2056         if (limit >= 256)
2057                 Con_DPrintf("Protocol: Runaway loop recursing tagentity links on entity %i\n", stateindex);
2058         // now that we have the parent entity we can make some decisions based on
2059         // distance from the player
2060         if (VectorDistance(d->states[d->viewentnum].netcenter, s->netcenter) < 1024.0f)
2061                 priority++;
2062         return bound(1, priority, ENTITYFRAME5_PRIORITYLEVELS - 1);
2063 }
2064
2065 void EntityState5_WriteUpdate(int number, const entity_state_t *s, int changedbits, sizebuf_t *msg)
2066 {
2067         prvm_prog_t *prog = SVVM_prog;
2068         unsigned int bits = 0;
2069         //dp_model_t *model;
2070         ENTITYSIZEPROFILING_START(msg, s->number);
2071
2072         if (s->active != ACTIVE_NETWORK)
2073                 MSG_WriteShort(msg, number | 0x8000);
2074         else
2075         {
2076                 if (PRVM_serveredictfunction((&prog->edicts[s->number]), SendEntity))
2077                         return;
2078
2079                 bits = changedbits;
2080                 if ((bits & E5_ORIGIN) && (!(s->flags & RENDER_LOWPRECISION) || s->exteriormodelforclient || s->tagentity || s->viewmodelforclient || (s->number >= 1 && s->number <= svs.maxclients) || s->origin[0] <= -4096.0625 || s->origin[0] >= 4095.9375 || s->origin[1] <= -4096.0625 || s->origin[1] >= 4095.9375 || s->origin[2] <= -4096.0625 || s->origin[2] >= 4095.9375))
2081                 // maybe also add: ((model = SV_GetModelByIndex(s->modelindex)) != NULL && model->name[0] == '*')
2082                         bits |= E5_ORIGIN32;
2083                         // possible values:
2084                         //   negative origin:
2085                         //     (int)(f * 8 - 0.5) >= -32768
2086                         //          (f * 8 - 0.5) >  -32769
2087                         //           f            >  -4096.0625
2088                         //   positive origin:
2089                         //     (int)(f * 8 + 0.5) <=  32767
2090                         //          (f * 8 + 0.5) <   32768
2091                         //           f * 8 + 0.5) <   4095.9375
2092                 if ((bits & E5_ANGLES) && !(s->flags & RENDER_LOWPRECISION))
2093                         bits |= E5_ANGLES16;
2094                 if ((bits & E5_MODEL) && s->modelindex >= 256)
2095                         bits |= E5_MODEL16;
2096                 if ((bits & E5_FRAME) && s->frame >= 256)
2097                         bits |= E5_FRAME16;
2098                 if (bits & E5_EFFECTS)
2099                 {
2100                         if (s->effects & 0xFFFF0000)
2101                                 bits |= E5_EFFECTS32;
2102                         else if (s->effects & 0xFFFFFF00)
2103                                 bits |= E5_EFFECTS16;
2104                 }
2105                 if (bits >= 256)
2106                         bits |= E5_EXTEND1;
2107                 if (bits >= 65536)
2108                         bits |= E5_EXTEND2;
2109                 if (bits >= 16777216)
2110                         bits |= E5_EXTEND3;
2111                 MSG_WriteShort(msg, number);
2112                 MSG_WriteByte(msg, bits & 0xFF);
2113                 if (bits & E5_EXTEND1)
2114                         MSG_WriteByte(msg, (bits >> 8) & 0xFF);
2115                 if (bits & E5_EXTEND2)
2116                         MSG_WriteByte(msg, (bits >> 16) & 0xFF);
2117                 if (bits & E5_EXTEND3)
2118                         MSG_WriteByte(msg, (bits >> 24) & 0xFF);
2119                 if (bits & E5_FLAGS)
2120                         MSG_WriteByte(msg, s->flags);
2121                 if (bits & E5_ORIGIN)
2122                 {
2123                         if (bits & E5_ORIGIN32)
2124                         {
2125                                 MSG_WriteCoord32f(msg, s->origin[0]);
2126                                 MSG_WriteCoord32f(msg, s->origin[1]);
2127                                 MSG_WriteCoord32f(msg, s->origin[2]);
2128                         }
2129                         else
2130                         {
2131                                 MSG_WriteCoord13i(msg, s->origin[0]);
2132                                 MSG_WriteCoord13i(msg, s->origin[1]);
2133                                 MSG_WriteCoord13i(msg, s->origin[2]);
2134                         }
2135                 }
2136                 if (bits & E5_ANGLES)
2137                 {
2138                         if (bits & E5_ANGLES16)
2139                         {
2140                                 MSG_WriteAngle16i(msg, s->angles[0]);
2141                                 MSG_WriteAngle16i(msg, s->angles[1]);
2142                                 MSG_WriteAngle16i(msg, s->angles[2]);
2143                         }
2144                         else
2145                         {
2146                                 MSG_WriteAngle8i(msg, s->angles[0]);
2147                                 MSG_WriteAngle8i(msg, s->angles[1]);
2148                                 MSG_WriteAngle8i(msg, s->angles[2]);
2149                         }
2150                 }
2151                 if (bits & E5_MODEL)
2152                 {
2153                         if (bits & E5_MODEL16)
2154                                 MSG_WriteShort(msg, s->modelindex);
2155                         else
2156                                 MSG_WriteByte(msg, s->modelindex);
2157                 }
2158                 if (bits & E5_FRAME)
2159                 {
2160                         if (bits & E5_FRAME16)
2161                                 MSG_WriteShort(msg, s->frame);
2162                         else
2163                                 MSG_WriteByte(msg, s->frame);
2164                 }
2165                 if (bits & E5_SKIN)
2166                         MSG_WriteByte(msg, s->skin);
2167                 if (bits & E5_EFFECTS)
2168                 {
2169                         if (bits & E5_EFFECTS32)
2170                                 MSG_WriteLong(msg, s->effects);
2171                         else if (bits & E5_EFFECTS16)
2172                                 MSG_WriteShort(msg, s->effects);
2173                         else
2174                                 MSG_WriteByte(msg, s->effects);
2175                 }
2176                 if (bits & E5_ALPHA)
2177                         MSG_WriteByte(msg, s->alpha);
2178                 if (bits & E5_SCALE)
2179                         MSG_WriteByte(msg, s->scale);
2180                 if (bits & E5_COLORMAP)
2181                         MSG_WriteByte(msg, s->colormap);
2182                 if (bits & E5_ATTACHMENT)
2183                 {
2184                         MSG_WriteShort(msg, s->tagentity);
2185                         MSG_WriteByte(msg, s->tagindex);
2186                 }
2187                 if (bits & E5_LIGHT)
2188                 {
2189                         MSG_WriteShort(msg, s->light[0]);
2190                         MSG_WriteShort(msg, s->light[1]);
2191                         MSG_WriteShort(msg, s->light[2]);
2192                         MSG_WriteShort(msg, s->light[3]);
2193                         MSG_WriteByte(msg, s->lightstyle);
2194                         MSG_WriteByte(msg, s->lightpflags);
2195                 }
2196                 if (bits & E5_GLOW)
2197                 {
2198                         MSG_WriteByte(msg, s->glowsize);
2199                         MSG_WriteByte(msg, s->glowcolor);
2200                 }
2201                 if (bits & E5_COLORMOD)
2202                 {
2203                         MSG_WriteByte(msg, s->colormod[0]);
2204                         MSG_WriteByte(msg, s->colormod[1]);
2205                         MSG_WriteByte(msg, s->colormod[2]);
2206                 }
2207                 if (bits & E5_GLOWMOD)
2208                 {
2209                         MSG_WriteByte(msg, s->glowmod[0]);
2210                         MSG_WriteByte(msg, s->glowmod[1]);
2211                         MSG_WriteByte(msg, s->glowmod[2]);
2212                 }
2213                 if (bits & E5_COMPLEXANIMATION)
2214                 {
2215                         if (s->skeletonobject.model && s->skeletonobject.relativetransforms)
2216                         {
2217                                 int numbones = s->skeletonobject.model->num_bones;
2218                                 int bonenum;
2219                                 short pose6s[6];
2220                                 MSG_WriteByte(msg, 4);
2221                                 MSG_WriteShort(msg, s->modelindex);
2222                                 MSG_WriteByte(msg, numbones);
2223                                 for (bonenum = 0;bonenum < numbones;bonenum++)
2224                                 {
2225                                         Matrix4x4_ToBonePose6s(s->skeletonobject.relativetransforms + bonenum, 64, pose6s);
2226                                         MSG_WriteShort(msg, pose6s[0]);
2227                                         MSG_WriteShort(msg, pose6s[1]);
2228                                         MSG_WriteShort(msg, pose6s[2]);
2229                                         MSG_WriteShort(msg, pose6s[3]);
2230                                         MSG_WriteShort(msg, pose6s[4]);
2231                                         MSG_WriteShort(msg, pose6s[5]);
2232                                 }
2233                         }
2234                         else if (s->framegroupblend[3].lerp > 0)
2235                         {
2236                                 MSG_WriteByte(msg, 3);
2237                                 MSG_WriteShort(msg, s->framegroupblend[0].frame);
2238                                 MSG_WriteShort(msg, s->framegroupblend[1].frame);
2239                                 MSG_WriteShort(msg, s->framegroupblend[2].frame);
2240                                 MSG_WriteShort(msg, s->framegroupblend[3].frame);
2241                                 MSG_WriteShort(msg, (int)((sv.time - s->framegroupblend[0].start) * 1000.0));
2242                                 MSG_WriteShort(msg, (int)((sv.time - s->framegroupblend[1].start) * 1000.0));
2243                                 MSG_WriteShort(msg, (int)((sv.time - s->framegroupblend[2].start) * 1000.0));
2244                                 MSG_WriteShort(msg, (int)((sv.time - s->framegroupblend[3].start) * 1000.0));
2245                                 MSG_WriteByte(msg, s->framegroupblend[0].lerp * 255.0f);
2246                                 MSG_WriteByte(msg, s->framegroupblend[1].lerp * 255.0f);
2247                                 MSG_WriteByte(msg, s->framegroupblend[2].lerp * 255.0f);
2248                                 MSG_WriteByte(msg, s->framegroupblend[3].lerp * 255.0f);
2249                         }
2250                         else if (s->framegroupblend[2].lerp > 0)
2251                         {
2252                                 MSG_WriteByte(msg, 2);
2253                                 MSG_WriteShort(msg, s->framegroupblend[0].frame);
2254                                 MSG_WriteShort(msg, s->framegroupblend[1].frame);
2255                                 MSG_WriteShort(msg, s->framegroupblend[2].frame);
2256                                 MSG_WriteShort(msg, (int)((sv.time - s->framegroupblend[0].start) * 1000.0));
2257                                 MSG_WriteShort(msg, (int)((sv.time - s->framegroupblend[1].start) * 1000.0));
2258                                 MSG_WriteShort(msg, (int)((sv.time - s->framegroupblend[2].start) * 1000.0));
2259                                 MSG_WriteByte(msg, s->framegroupblend[0].lerp * 255.0f);
2260                                 MSG_WriteByte(msg, s->framegroupblend[1].lerp * 255.0f);
2261                                 MSG_WriteByte(msg, s->framegroupblend[2].lerp * 255.0f);
2262                         }
2263                         else if (s->framegroupblend[1].lerp > 0)
2264                         {
2265                                 MSG_WriteByte(msg, 1);
2266                                 MSG_WriteShort(msg, s->framegroupblend[0].frame);
2267                                 MSG_WriteShort(msg, s->framegroupblend[1].frame);
2268                                 MSG_WriteShort(msg, (int)((sv.time - s->framegroupblend[0].start) * 1000.0));
2269                                 MSG_WriteShort(msg, (int)((sv.time - s->framegroupblend[1].start) * 1000.0));
2270                                 MSG_WriteByte(msg, s->framegroupblend[0].lerp * 255.0f);
2271                                 MSG_WriteByte(msg, s->framegroupblend[1].lerp * 255.0f);
2272                         }
2273                         else
2274                         {
2275                                 MSG_WriteByte(msg, 0);
2276                                 MSG_WriteShort(msg, s->framegroupblend[0].frame);
2277                                 MSG_WriteShort(msg, (int)((sv.time - s->framegroupblend[0].start) * 1000.0));
2278                         }
2279                 }
2280                 if (bits & E5_TRAILEFFECTNUM)
2281                         MSG_WriteShort(msg, s->traileffectnum);
2282         }
2283
2284         ENTITYSIZEPROFILING_END(msg, s->number);
2285 }
2286
2287 static void EntityState5_ReadUpdate(entity_state_t *s, int number)
2288 {
2289         int bits;
2290         bits = MSG_ReadByte(&cl_message);
2291         if (bits & E5_EXTEND1)
2292         {
2293                 bits |= MSG_ReadByte(&cl_message) << 8;
2294                 if (bits & E5_EXTEND2)
2295                 {
2296                         bits |= MSG_ReadByte(&cl_message) << 16;
2297                         if (bits & E5_EXTEND3)
2298                                 bits |= MSG_ReadByte(&cl_message) << 24;
2299                 }
2300         }
2301         if (bits & E5_FULLUPDATE)
2302         {
2303                 *s = defaultstate;
2304                 s->active = ACTIVE_NETWORK;
2305         }
2306         if (bits & E5_FLAGS)
2307                 s->flags = MSG_ReadByte(&cl_message);
2308         if (bits & E5_ORIGIN)
2309         {
2310                 if (bits & E5_ORIGIN32)
2311                 {
2312                         s->origin[0] = MSG_ReadCoord32f(&cl_message);
2313                         s->origin[1] = MSG_ReadCoord32f(&cl_message);
2314                         s->origin[2] = MSG_ReadCoord32f(&cl_message);
2315                 }
2316                 else
2317                 {
2318                         s->origin[0] = MSG_ReadCoord13i(&cl_message);
2319                         s->origin[1] = MSG_ReadCoord13i(&cl_message);
2320                         s->origin[2] = MSG_ReadCoord13i(&cl_message);
2321                 }
2322         }
2323         if (bits & E5_ANGLES)
2324         {
2325                 if (bits & E5_ANGLES16)
2326                 {
2327                         s->angles[0] = MSG_ReadAngle16i(&cl_message);
2328                         s->angles[1] = MSG_ReadAngle16i(&cl_message);
2329                         s->angles[2] = MSG_ReadAngle16i(&cl_message);
2330                 }
2331                 else
2332                 {
2333                         s->angles[0] = MSG_ReadAngle8i(&cl_message);
2334                         s->angles[1] = MSG_ReadAngle8i(&cl_message);
2335                         s->angles[2] = MSG_ReadAngle8i(&cl_message);
2336                 }
2337         }
2338         if (bits & E5_MODEL)
2339         {
2340                 if (bits & E5_MODEL16)
2341                         s->modelindex = (unsigned short) MSG_ReadShort(&cl_message);
2342                 else
2343                         s->modelindex = MSG_ReadByte(&cl_message);
2344         }
2345         if (bits & E5_FRAME)
2346         {
2347                 if (bits & E5_FRAME16)
2348                         s->frame = (unsigned short) MSG_ReadShort(&cl_message);
2349                 else
2350                         s->frame = MSG_ReadByte(&cl_message);
2351         }
2352         if (bits & E5_SKIN)
2353                 s->skin = MSG_ReadByte(&cl_message);
2354         if (bits & E5_EFFECTS)
2355         {
2356                 if (bits & E5_EFFECTS32)
2357                         s->effects = (unsigned int) MSG_ReadLong(&cl_message);
2358                 else if (bits & E5_EFFECTS16)
2359                         s->effects = (unsigned short) MSG_ReadShort(&cl_message);
2360                 else
2361                         s->effects = MSG_ReadByte(&cl_message);
2362         }
2363         if (bits & E5_ALPHA)
2364                 s->alpha = MSG_ReadByte(&cl_message);
2365         if (bits & E5_SCALE)
2366                 s->scale = MSG_ReadByte(&cl_message);
2367         if (bits & E5_COLORMAP)
2368                 s->colormap = MSG_ReadByte(&cl_message);
2369         if (bits & E5_ATTACHMENT)
2370         {
2371                 s->tagentity = (unsigned short) MSG_ReadShort(&cl_message);
2372                 s->tagindex = MSG_ReadByte(&cl_message);
2373         }
2374         if (bits & E5_LIGHT)
2375         {
2376                 s->light[0] = (unsigned short) MSG_ReadShort(&cl_message);
2377                 s->light[1] = (unsigned short) MSG_ReadShort(&cl_message);
2378                 s->light[2] = (unsigned short) MSG_ReadShort(&cl_message);
2379                 s->light[3] = (unsigned short) MSG_ReadShort(&cl_message);
2380                 s->lightstyle = MSG_ReadByte(&cl_message);
2381                 s->lightpflags = MSG_ReadByte(&cl_message);
2382         }
2383         if (bits & E5_GLOW)
2384         {
2385                 s->glowsize = MSG_ReadByte(&cl_message);
2386                 s->glowcolor = MSG_ReadByte(&cl_message);
2387         }
2388         if (bits & E5_COLORMOD)
2389         {
2390                 s->colormod[0] = MSG_ReadByte(&cl_message);
2391                 s->colormod[1] = MSG_ReadByte(&cl_message);
2392                 s->colormod[2] = MSG_ReadByte(&cl_message);
2393         }
2394         if (bits & E5_GLOWMOD)
2395         {
2396                 s->glowmod[0] = MSG_ReadByte(&cl_message);
2397                 s->glowmod[1] = MSG_ReadByte(&cl_message);
2398                 s->glowmod[2] = MSG_ReadByte(&cl_message);
2399         }
2400         if (bits & E5_COMPLEXANIMATION)
2401         {
2402                 skeleton_t *skeleton;
2403                 const dp_model_t *model;
2404                 int modelindex;
2405                 int type;
2406                 int bonenum;
2407                 int numbones;
2408                 short pose6s[6];
2409                 type = MSG_ReadByte(&cl_message);
2410                 switch(type)
2411                 {
2412                 case 0:
2413                         s->framegroupblend[0].frame = MSG_ReadShort(&cl_message);
2414                         s->framegroupblend[1].frame = 0;
2415                         s->framegroupblend[2].frame = 0;
2416                         s->framegroupblend[3].frame = 0;
2417                         s->framegroupblend[0].start = cl.time - (short)MSG_ReadShort(&cl_message) * (1.0f / 1000.0f);
2418                         s->framegroupblend[1].start = 0;
2419                         s->framegroupblend[2].start = 0;
2420                         s->framegroupblend[3].start = 0;
2421                         s->framegroupblend[0].lerp = 1;
2422                         s->framegroupblend[1].lerp = 0;
2423                         s->framegroupblend[2].lerp = 0;
2424                         s->framegroupblend[3].lerp = 0;
2425                         break;
2426                 case 1:
2427                         s->framegroupblend[0].frame = MSG_ReadShort(&cl_message);
2428                         s->framegroupblend[1].frame = MSG_ReadShort(&cl_message);
2429                         s->framegroupblend[2].frame = 0;
2430                         s->framegroupblend[3].frame = 0;
2431                         s->framegroupblend[0].start = cl.time - (short)MSG_ReadShort(&cl_message) * (1.0f / 1000.0f);
2432                         s->framegroupblend[1].start = cl.time - (short)MSG_ReadShort(&cl_message) * (1.0f / 1000.0f);
2433                         s->framegroupblend[2].start = 0;
2434                         s->framegroupblend[3].start = 0;
2435                         s->framegroupblend[0].lerp = MSG_ReadByte(&cl_message) * (1.0f / 255.0f);
2436                         s->framegroupblend[1].lerp = MSG_ReadByte(&cl_message) * (1.0f / 255.0f);
2437                         s->framegroupblend[2].lerp = 0;
2438                         s->framegroupblend[3].lerp = 0;
2439                         break;
2440                 case 2:
2441                         s->framegroupblend[0].frame = MSG_ReadShort(&cl_message);
2442                         s->framegroupblend[1].frame = MSG_ReadShort(&cl_message);
2443                         s->framegroupblend[2].frame = MSG_ReadShort(&cl_message);
2444                         s->framegroupblend[3].frame = 0;
2445                         s->framegroupblend[0].start = cl.time - (short)MSG_ReadShort(&cl_message) * (1.0f / 1000.0f);
2446                         s->framegroupblend[1].start = cl.time - (short)MSG_ReadShort(&cl_message) * (1.0f / 1000.0f);
2447                         s->framegroupblend[2].start = cl.time - (short)MSG_ReadShort(&cl_message) * (1.0f / 1000.0f);
2448                         s->framegroupblend[3].start = 0;
2449                         s->framegroupblend[0].lerp = MSG_ReadByte(&cl_message) * (1.0f / 255.0f);
2450                         s->framegroupblend[1].lerp = MSG_ReadByte(&cl_message) * (1.0f / 255.0f);
2451                         s->framegroupblend[2].lerp = MSG_ReadByte(&cl_message) * (1.0f / 255.0f);
2452                         s->framegroupblend[3].lerp = 0;
2453                         break;
2454                 case 3:
2455                         s->framegroupblend[0].frame = MSG_ReadShort(&cl_message);
2456                         s->framegroupblend[1].frame = MSG_ReadShort(&cl_message);
2457                         s->framegroupblend[2].frame = MSG_ReadShort(&cl_message);
2458                         s->framegroupblend[3].frame = MSG_ReadShort(&cl_message);
2459                         s->framegroupblend[0].start = cl.time - (short)MSG_ReadShort(&cl_message) * (1.0f / 1000.0f);
2460                         s->framegroupblend[1].start = cl.time - (short)MSG_ReadShort(&cl_message) * (1.0f / 1000.0f);
2461                         s->framegroupblend[2].start = cl.time - (short)MSG_ReadShort(&cl_message) * (1.0f / 1000.0f);
2462                         s->framegroupblend[3].start = cl.time - (short)MSG_ReadShort(&cl_message) * (1.0f / 1000.0f);
2463                         s->framegroupblend[0].lerp = MSG_ReadByte(&cl_message) * (1.0f / 255.0f);
2464                         s->framegroupblend[1].lerp = MSG_ReadByte(&cl_message) * (1.0f / 255.0f);
2465                         s->framegroupblend[2].lerp = MSG_ReadByte(&cl_message) * (1.0f / 255.0f);
2466                         s->framegroupblend[3].lerp = MSG_ReadByte(&cl_message) * (1.0f / 255.0f);
2467                         break;
2468                 case 4:
2469                         if (!cl.engineskeletonobjects)
2470                                 cl.engineskeletonobjects = (skeleton_t *) Mem_Alloc(cls.levelmempool, sizeof(*cl.engineskeletonobjects) * MAX_EDICTS);
2471                         skeleton = &cl.engineskeletonobjects[number];
2472                         modelindex = MSG_ReadShort(&cl_message);
2473                         model = CL_GetModelByIndex(modelindex);
2474                         numbones = MSG_ReadByte(&cl_message);
2475                         if (model && numbones != model->num_bones)
2476                                 Host_Error("E5_COMPLEXANIMATION: model has different number of bones than network packet describes\n");
2477                         if (!skeleton->relativetransforms || skeleton->model != model)
2478                         {
2479                                 skeleton->model = model;
2480                                 skeleton->relativetransforms = (matrix4x4_t *) Mem_Realloc(cls.levelmempool, skeleton->relativetransforms, sizeof(*skeleton->relativetransforms) * skeleton->model->num_bones);
2481                                 for (bonenum = 0;bonenum < model->num_bones;bonenum++)
2482                                         skeleton->relativetransforms[bonenum] = identitymatrix;
2483                         }
2484                         for (bonenum = 0;bonenum < numbones;bonenum++)
2485                         {
2486                                 pose6s[0] = (short)MSG_ReadShort(&cl_message);
2487                                 pose6s[1] = (short)MSG_ReadShort(&cl_message);
2488                                 pose6s[2] = (short)MSG_ReadShort(&cl_message);
2489                                 pose6s[3] = (short)MSG_ReadShort(&cl_message);
2490                                 pose6s[4] = (short)MSG_ReadShort(&cl_message);
2491                                 pose6s[5] = (short)MSG_ReadShort(&cl_message);
2492                                 Matrix4x4_FromBonePose6s(skeleton->relativetransforms + bonenum, 1.0f / 64.0f, pose6s);
2493                         }
2494                         s->skeletonobject = *skeleton;
2495                         break;
2496                 default:
2497                         Host_Error("E5_COMPLEXANIMATION: Parse error - unknown type %i\n", type);
2498                         break;
2499                 }
2500         }
2501         if (bits & E5_TRAILEFFECTNUM)
2502                 s->traileffectnum = (unsigned short) MSG_ReadShort(&cl_message);
2503
2504
2505         if (developer_networkentities.integer >= 2)
2506         {
2507                 Con_Printf("ReadFields e%i", number);
2508
2509                 if (bits & E5_ORIGIN)
2510                         Con_Printf(" E5_ORIGIN %f %f %f", s->origin[0], s->origin[1], s->origin[2]);
2511                 if (bits & E5_ANGLES)
2512                         Con_Printf(" E5_ANGLES %f %f %f", s->angles[0], s->angles[1], s->angles[2]);
2513                 if (bits & E5_MODEL)
2514                         Con_Printf(" E5_MODEL %i", s->modelindex);
2515                 if (bits & E5_FRAME)
2516                         Con_Printf(" E5_FRAME %i", s->frame);
2517                 if (bits & E5_SKIN)
2518                         Con_Printf(" E5_SKIN %i", s->skin);
2519                 if (bits & E5_EFFECTS)
2520                         Con_Printf(" E5_EFFECTS %i", s->effects);
2521                 if (bits & E5_FLAGS)
2522                 {
2523                         Con_Printf(" E5_FLAGS %i (", s->flags);
2524                         if (s->flags & RENDER_STEP)
2525                                 Con_Print(" STEP");
2526                         if (s->flags & RENDER_GLOWTRAIL)
2527                                 Con_Print(" GLOWTRAIL");
2528                         if (s->flags & RENDER_VIEWMODEL)
2529                                 Con_Print(" VIEWMODEL");
2530                         if (s->flags & RENDER_EXTERIORMODEL)
2531                                 Con_Print(" EXTERIORMODEL");
2532                         if (s->flags & RENDER_LOWPRECISION)
2533                                 Con_Print(" LOWPRECISION");
2534                         if (s->flags & RENDER_COLORMAPPED)
2535                                 Con_Print(" COLORMAPPED");
2536                         if (s->flags & RENDER_SHADOW)
2537                                 Con_Print(" SHADOW");
2538                         if (s->flags & RENDER_LIGHT)
2539                                 Con_Print(" LIGHT");
2540                         if (s->flags & RENDER_NOSELFSHADOW)
2541                                 Con_Print(" NOSELFSHADOW");
2542                         Con_Print(")");
2543                 }
2544                 if (bits & E5_ALPHA)
2545                         Con_Printf(" E5_ALPHA %f", s->alpha / 255.0f);
2546                 if (bits & E5_SCALE)
2547                         Con_Printf(" E5_SCALE %f", s->scale / 16.0f);
2548                 if (bits & E5_COLORMAP)
2549                         Con_Printf(" E5_COLORMAP %i", s->colormap);
2550                 if (bits & E5_ATTACHMENT)
2551                         Con_Printf(" E5_ATTACHMENT e%i:%i", s->tagentity, s->tagindex);
2552                 if (bits & E5_LIGHT)
2553                         Con_Printf(" E5_LIGHT %i:%i:%i:%i %i:%i", s->light[0], s->light[1], s->light[2], s->light[3], s->lightstyle, s->lightpflags);
2554                 if (bits & E5_GLOW)
2555                         Con_Printf(" E5_GLOW %i:%i", s->glowsize * 4, s->glowcolor);
2556                 if (bits & E5_COLORMOD)
2557                         Con_Printf(" E5_COLORMOD %f:%f:%f", s->colormod[0] / 32.0f, s->colormod[1] / 32.0f, s->colormod[2] / 32.0f);
2558                 if (bits & E5_GLOWMOD)
2559                         Con_Printf(" E5_GLOWMOD %f:%f:%f", s->glowmod[0] / 32.0f, s->glowmod[1] / 32.0f, s->glowmod[2] / 32.0f);
2560                 Con_Print("\n");
2561         }
2562 }
2563
2564 static int EntityState5_DeltaBits(const entity_state_t *o, const entity_state_t *n)
2565 {
2566         unsigned int bits = 0;
2567         if (n->active == ACTIVE_NETWORK)
2568         {
2569                 if (o->active != ACTIVE_NETWORK)
2570                         bits |= E5_FULLUPDATE;
2571                 if (!VectorCompare(o->origin, n->origin))
2572                         bits |= E5_ORIGIN;
2573                 if (!VectorCompare(o->angles, n->angles))
2574                         bits |= E5_ANGLES;
2575                 if (o->modelindex != n->modelindex)
2576                         bits |= E5_MODEL;
2577                 if (o->frame != n->frame)
2578                         bits |= E5_FRAME;
2579                 if (o->skin != n->skin)
2580                         bits |= E5_SKIN;
2581                 if (o->effects != n->effects)
2582                         bits |= E5_EFFECTS;
2583                 if (o->flags != n->flags)
2584                         bits |= E5_FLAGS;
2585                 if (o->alpha != n->alpha)
2586                         bits |= E5_ALPHA;
2587                 if (o->scale != n->scale)
2588                         bits |= E5_SCALE;
2589                 if (o->colormap != n->colormap)
2590                         bits |= E5_COLORMAP;
2591                 if (o->tagentity != n->tagentity || o->tagindex != n->tagindex)
2592                         bits |= E5_ATTACHMENT;
2593                 if (o->light[0] != n->light[0] || o->light[1] != n->light[1] || o->light[2] != n->light[2] || o->light[3] != n->light[3] || o->lightstyle != n->lightstyle || o->lightpflags != n->lightpflags)
2594                         bits |= E5_LIGHT;
2595                 if (o->glowsize != n->glowsize || o->glowcolor != n->glowcolor)
2596                         bits |= E5_GLOW;
2597                 if (o->colormod[0] != n->colormod[0] || o->colormod[1] != n->colormod[1] || o->colormod[2] != n->colormod[2])
2598                         bits |= E5_COLORMOD;
2599                 if (o->glowmod[0] != n->glowmod[0] || o->glowmod[1] != n->glowmod[1] || o->glowmod[2] != n->glowmod[2])
2600                         bits |= E5_GLOWMOD;
2601                 if (n->flags & RENDER_COMPLEXANIMATION)
2602                         bits |= E5_COMPLEXANIMATION;
2603                 if (o->traileffectnum != n->traileffectnum)
2604                         bits |= E5_TRAILEFFECTNUM;
2605         }
2606         else
2607                 if (o->active == ACTIVE_NETWORK)
2608                         bits |= E5_FULLUPDATE;
2609         return bits;
2610 }
2611
2612 void EntityFrame5_CL_ReadFrame(void)
2613 {
2614         int n, enumber, framenum;
2615         entity_t *ent;
2616         entity_state_t *s;
2617         // read the number of this frame to echo back in next input packet
2618         framenum = MSG_ReadLong(&cl_message);
2619         CL_NewFrameReceived(framenum);
2620         if (cls.protocol != PROTOCOL_QUAKE && cls.protocol != PROTOCOL_QUAKEDP && cls.protocol != PROTOCOL_NEHAHRAMOVIE && cls.protocol != PROTOCOL_DARKPLACES1 && cls.protocol != PROTOCOL_DARKPLACES2 && cls.protocol != PROTOCOL_DARKPLACES3 && cls.protocol != PROTOCOL_DARKPLACES4 && cls.protocol != PROTOCOL_DARKPLACES5 && cls.protocol != PROTOCOL_DARKPLACES6)
2621                 cls.servermovesequence = MSG_ReadLong(&cl_message);
2622         // read entity numbers until we find a 0x8000
2623         // (which would be remove world entity, but is actually a terminator)
2624         while ((n = (unsigned short)MSG_ReadShort(&cl_message)) != 0x8000 && !cl_message.badread)
2625         {
2626                 // get the entity number
2627                 enumber = n & 0x7FFF;
2628                 // we may need to expand the array
2629                 if (cl.num_entities <= enumber)
2630                 {
2631                         cl.num_entities = enumber + 1;
2632                         if (enumber >= cl.max_entities)
2633                                 CL_ExpandEntities(enumber);
2634                 }
2635                 // look up the entity
2636                 ent = cl.entities + enumber;
2637                 // slide the current into the previous slot
2638                 ent->state_previous = ent->state_current;
2639                 // read the update
2640                 s = &ent->state_current;
2641                 if (n & 0x8000)
2642                 {
2643                         // remove entity
2644                         *s = defaultstate;
2645                 }
2646                 else
2647                 {
2648                         // update entity
2649                         EntityState5_ReadUpdate(s, enumber);
2650                 }
2651                 // set the cl.entities_active flag
2652                 cl.entities_active[enumber] = (s->active == ACTIVE_NETWORK);
2653                 // set the update time
2654                 s->time = cl.mtime[0];
2655                 // fix the number (it gets wiped occasionally by copying from defaultstate)
2656                 s->number = enumber;
2657                 // check if we need to update the lerp stuff
2658                 if (s->active == ACTIVE_NETWORK)
2659                         CL_MoveLerpEntityStates(&cl.entities[enumber]);
2660                 // print extra messages if desired
2661                 if (developer_networkentities.integer >= 2 && cl.entities[enumber].state_current.active != cl.entities[enumber].state_previous.active)
2662                 {
2663                         if (cl.entities[enumber].state_current.active == ACTIVE_NETWORK)
2664                                 Con_Printf("entity #%i has become active\n", enumber);
2665                         else if (cl.entities[enumber].state_previous.active)
2666                                 Con_Printf("entity #%i has become inactive\n", enumber);
2667                 }
2668         }
2669 }
2670
2671 static int packetlog5cmp(const void *a_, const void *b_)
2672 {
2673         const entityframe5_packetlog_t *a = (const entityframe5_packetlog_t *) a_;
2674         const entityframe5_packetlog_t *b = (const entityframe5_packetlog_t *) b_;
2675         return a->packetnumber - b->packetnumber;
2676 }
2677
2678 void EntityFrame5_LostFrame(entityframe5_database_t *d, int framenum)
2679 {
2680         int i, j, l, bits;
2681         entityframe5_changestate_t *s;
2682         entityframe5_packetlog_t *p;
2683         static unsigned char statsdeltabits[(MAX_CL_STATS+7)/8];
2684         static int deltabits[MAX_EDICTS];
2685         entityframe5_packetlog_t *packetlogs[ENTITYFRAME5_MAXPACKETLOGS];
2686
2687         for (i = 0, p = d->packetlog;i < ENTITYFRAME5_MAXPACKETLOGS;i++, p++)
2688                 packetlogs[i] = p;
2689         qsort(packetlogs, sizeof(*packetlogs), ENTITYFRAME5_MAXPACKETLOGS, packetlog5cmp);
2690
2691         memset(deltabits, 0, sizeof(deltabits));
2692         memset(statsdeltabits, 0, sizeof(statsdeltabits));
2693         for (i = 0; i < ENTITYFRAME5_MAXPACKETLOGS; i++)
2694         {
2695                 p = packetlogs[i];
2696
2697                 if (!p->packetnumber)
2698                         continue;
2699
2700                 if (p->packetnumber <= framenum)
2701                 {
2702                         for (j = 0, s = p->states;j < p->numstates;j++, s++)
2703                                 deltabits[s->number] |= s->bits;
2704
2705                         for (l = 0;l < (MAX_CL_STATS+7)/8;l++)
2706                                 statsdeltabits[l] |= p->statsdeltabits[l];
2707
2708                         p->packetnumber = 0;
2709                 }
2710                 else
2711                 {
2712                         for (j = 0, s = p->states;j < p->numstates;j++, s++)
2713                                 deltabits[s->number] &= ~s->bits;
2714                         for (l = 0;l < (MAX_CL_STATS+7)/8;l++)
2715                                 statsdeltabits[l] &= ~p->statsdeltabits[l];
2716                 }
2717         }
2718
2719         for(i = 0; i < d->maxedicts; ++i)
2720         {
2721                 bits = deltabits[i] & ~d->deltabits[i];
2722                 if(bits)
2723                 {
2724                         d->deltabits[i] |= bits;
2725                         // if it was a very important update, set priority higher
2726                         if (bits & (E5_FULLUPDATE | E5_ATTACHMENT | E5_MODEL | E5_COLORMAP))
2727                                 d->priorities[i] = max(d->priorities[i], 4);
2728                         else
2729                                 d->priorities[i] = max(d->priorities[i], 1);
2730                 }
2731         }
2732
2733         for (l = 0;l < (MAX_CL_STATS+7)/8;l++)
2734                 host_client->statsdeltabits[l] |= statsdeltabits[l];
2735                 // no need to mask out the already-set bits here, as we do not
2736                 // do that priorities stuff
2737 }
2738
2739 void EntityFrame5_AckFrame(entityframe5_database_t *d, int framenum)
2740 {
2741         int i;
2742         // scan for packets made obsolete by this ack and delete them
2743         for (i = 0;i < ENTITYFRAME5_MAXPACKETLOGS;i++)
2744                 if (d->packetlog[i].packetnumber <= framenum)
2745                         d->packetlog[i].packetnumber = 0;
2746 }
2747
2748 qboolean EntityFrame5_WriteFrame(sizebuf_t *msg, int maxsize, entityframe5_database_t *d, int numstates, const entity_state_t **states, int viewentnum, int movesequence, qboolean need_empty)
2749 {
2750         prvm_prog_t *prog = SVVM_prog;
2751         const entity_state_t *n;
2752         int i, num, l, framenum, packetlognumber, priority;
2753         sizebuf_t buf;
2754         unsigned char data[128];
2755         entityframe5_packetlog_t *packetlog;
2756
2757         if (prog->max_edicts > d->maxedicts)
2758                 EntityFrame5_ExpandEdicts(d, prog->max_edicts);
2759
2760         framenum = d->latestframenum + 1;
2761         d->viewentnum = viewentnum;
2762
2763         // if packet log is full, mark all frames as lost, this will cause
2764         // it to send the lost data again
2765         for (packetlognumber = 0;packetlognumber < ENTITYFRAME5_MAXPACKETLOGS;packetlognumber++)
2766                 if (d->packetlog[packetlognumber].packetnumber == 0)
2767                         break;
2768         if (packetlognumber == ENTITYFRAME5_MAXPACKETLOGS)
2769         {
2770                 Con_DPrintf("EntityFrame5_WriteFrame: packetlog overflow for a client, resetting\n");
2771                 EntityFrame5_LostFrame(d, framenum);
2772                 packetlognumber = 0;
2773         }
2774
2775         // prepare the buffer
2776         memset(&buf, 0, sizeof(buf));
2777         buf.data = data;
2778         buf.maxsize = sizeof(data);
2779
2780         // detect changes in states
2781         num = 1;
2782         for (i = 0;i < numstates;i++)
2783         {
2784                 n = states[i];
2785                 // mark gaps in entity numbering as removed entities
2786                 for (;num < n->number;num++)
2787                 {
2788                         // if the entity used to exist, clear it
2789                         if (CHECKPVSBIT(d->visiblebits, num))
2790                         {
2791                                 CLEARPVSBIT(d->visiblebits, num);
2792                                 d->deltabits[num] = E5_FULLUPDATE;
2793                                 d->priorities[num] = max(d->priorities[num], 8); // removal is cheap
2794                                 d->states[num] = defaultstate;
2795                                 d->states[num].number = num;
2796                         }
2797                 }
2798                 // update the entity state data
2799                 if (!CHECKPVSBIT(d->visiblebits, num))
2800                 {
2801                         // entity just spawned in, don't let it completely hog priority
2802                         // because of being ancient on the first frame
2803                         d->updateframenum[num] = framenum;
2804                         // initial priority is a bit high to make projectiles send on the
2805                         // first frame, among other things
2806                         d->priorities[num] = max(d->priorities[num], 4);
2807                 }
2808                 SETPVSBIT(d->visiblebits, num);
2809                 d->deltabits[num] |= EntityState5_DeltaBits(d->states + num, n);
2810                 d->priorities[num] = max(d->priorities[num], 1);
2811                 d->states[num] = *n;
2812                 d->states[num].number = num;
2813                 // advance to next entity so the next iteration doesn't immediately remove it
2814                 num++;
2815         }
2816         // all remaining entities are dead
2817         for (;num < d->maxedicts;num++)
2818         {
2819                 if (CHECKPVSBIT(d->visiblebits, num))
2820                 {
2821                         CLEARPVSBIT(d->visiblebits, num);
2822                         d->deltabits[num] = E5_FULLUPDATE;
2823                         d->priorities[num] = max(d->priorities[num], 8); // removal is cheap
2824                         d->states[num] = defaultstate;
2825                         d->states[num].number = num;
2826                 }
2827         }
2828
2829         // if there isn't at least enough room for an empty svc_entities,
2830         // don't bother trying...
2831         if (buf.cursize + 11 > buf.maxsize)
2832                 return false;
2833
2834         // build lists of entities by priority level
2835         memset(d->prioritychaincounts, 0, sizeof(d->prioritychaincounts));
2836         l = 0;
2837         for (num = 0;num < d->maxedicts;num++)
2838         {
2839                 if (d->priorities[num])
2840                 {
2841                         if (d->deltabits[num])
2842                         {
2843                                 if (d->priorities[num] < (ENTITYFRAME5_PRIORITYLEVELS - 1))
2844                                         d->priorities[num] = EntityState5_Priority(d, num);
2845                                 l = num;
2846                                 priority = d->priorities[num];
2847                                 if (d->prioritychaincounts[priority] < ENTITYFRAME5_MAXSTATES)
2848                                         d->prioritychains[priority][d->prioritychaincounts[priority]++] = num;
2849                         }
2850                         else
2851                                 d->priorities[num] = 0;
2852                 }
2853         }
2854
2855         packetlog = NULL;
2856         // write stat updates
2857         if (sv.protocol != PROTOCOL_QUAKE && sv.protocol != PROTOCOL_QUAKEDP && sv.protocol != PROTOCOL_NEHAHRAMOVIE && sv.protocol != PROTOCOL_NEHAHRABJP && sv.protocol != PROTOCOL_NEHAHRABJP2 && sv.protocol != PROTOCOL_NEHAHRABJP3 && sv.protocol != PROTOCOL_DARKPLACES1 && sv.protocol != PROTOCOL_DARKPLACES2 && sv.protocol != PROTOCOL_DARKPLACES3 && sv.protocol != PROTOCOL_DARKPLACES4 && sv.protocol != PROTOCOL_DARKPLACES5)
2858         {
2859                 for (i = 0;i < MAX_CL_STATS && msg->cursize + 6 + 11 <= maxsize;i++)
2860                 {
2861                         if (host_client->statsdeltabits[i>>3] & (1<<(i&7)))
2862                         {
2863                                 host_client->statsdeltabits[i>>3] &= ~(1<<(i&7));
2864                                 // add packetlog entry now that we have something for it
2865                                 if (!packetlog)
2866                                 {
2867                                         packetlog = d->packetlog + packetlognumber;
2868                                         packetlog->packetnumber = framenum;
2869                                         packetlog->numstates = 0;
2870                                         memset(packetlog->statsdeltabits, 0, sizeof(packetlog->statsdeltabits));
2871                                 }
2872                                 packetlog->statsdeltabits[i>>3] |= (1<<(i&7));
2873                                 if (host_client->stats[i] >= 0 && host_client->stats[i] < 256)
2874                                 {
2875                                         MSG_WriteByte(msg, svc_updatestatubyte);
2876                                         MSG_WriteByte(msg, i);
2877                                         MSG_WriteByte(msg, host_client->stats[i]);
2878                                         l = 1;
2879                                 }
2880                                 else
2881                                 {
2882                                         MSG_WriteByte(msg, svc_updatestat);
2883                                         MSG_WriteByte(msg, i);
2884                                         MSG_WriteLong(msg, host_client->stats[i]);
2885                                         l = 1;
2886                                 }
2887                         }
2888                 }
2889         }
2890
2891         // only send empty svc_entities frame if needed
2892         if(!l && !need_empty)
2893                 return false;
2894
2895         // add packetlog entry now that we have something for it
2896         if (!packetlog)
2897         {
2898                 packetlog = d->packetlog + packetlognumber;
2899                 packetlog->packetnumber = framenum;
2900                 packetlog->numstates = 0;
2901                 memset(packetlog->statsdeltabits, 0, sizeof(packetlog->statsdeltabits));
2902         }
2903
2904         // write state updates
2905         if (developer_networkentities.integer >= 10)
2906                 Con_Printf("send: svc_entities %i\n", framenum);
2907         d->latestframenum = framenum;
2908         MSG_WriteByte(msg, svc_entities);
2909         MSG_WriteLong(msg, framenum);
2910         if (sv.protocol != PROTOCOL_QUAKE && sv.protocol != PROTOCOL_QUAKEDP && sv.protocol != PROTOCOL_NEHAHRAMOVIE && sv.protocol != PROTOCOL_DARKPLACES1 && sv.protocol != PROTOCOL_DARKPLACES2 && sv.protocol != PROTOCOL_DARKPLACES3 && sv.protocol != PROTOCOL_DARKPLACES4 && sv.protocol != PROTOCOL_DARKPLACES5 && sv.protocol != PROTOCOL_DARKPLACES6)
2911                 MSG_WriteLong(msg, movesequence);
2912         for (priority = ENTITYFRAME5_PRIORITYLEVELS - 1;priority >= 0 && packetlog->numstates < ENTITYFRAME5_MAXSTATES;priority--)
2913         {
2914                 for (i = 0;i < d->prioritychaincounts[priority] && packetlog->numstates < ENTITYFRAME5_MAXSTATES;i++)
2915                 {
2916                         num = d->prioritychains[priority][i];
2917                         n = d->states + num;
2918                         if (d->deltabits[num] & E5_FULLUPDATE)
2919                                 d->deltabits[num] = E5_FULLUPDATE | EntityState5_DeltaBits(&defaultstate, n);
2920                         buf.cursize = 0;
2921                         EntityState5_WriteUpdate(num, n, d->deltabits[num], &buf);
2922                         // if the entity won't fit, try the next one
2923                         if (msg->cursize + buf.cursize + 2 > maxsize)
2924                                 continue;
2925                         // write entity to the packet
2926                         SZ_Write(msg, buf.data, buf.cursize);
2927                         // mark age on entity for prioritization
2928                         d->updateframenum[num] = framenum;
2929                         // log entity so deltabits can be restored later if lost
2930                         packetlog->states[packetlog->numstates].number = num;
2931                         packetlog->states[packetlog->numstates].bits = d->deltabits[num];
2932                         packetlog->numstates++;
2933                         // clear deltabits and priority so it won't be sent again
2934                         d->deltabits[num] = 0;
2935                         d->priorities[num] = 0;
2936                 }
2937         }
2938         MSG_WriteShort(msg, 0x8000);
2939
2940         return true;
2941 }
2942
2943
2944 static void QW_TranslateEffects(entity_state_t *s, int qweffects)
2945 {
2946         s->effects = 0;
2947         s->internaleffects = 0;
2948         if (qweffects & QW_EF_BRIGHTFIELD)
2949                 s->effects |= EF_BRIGHTFIELD;
2950         if (qweffects & QW_EF_MUZZLEFLASH)
2951                 s->effects |= EF_MUZZLEFLASH;
2952         if (qweffects & QW_EF_FLAG1)
2953         {
2954                 // mimic FTEQW's interpretation of EF_FLAG1 as EF_NODRAW on non-player entities
2955                 if (s->number > cl.maxclients)
2956                         s->effects |= EF_NODRAW;
2957                 else
2958                         s->internaleffects |= INTEF_FLAG1QW;
2959         }
2960         if (qweffects & QW_EF_FLAG2)
2961         {
2962                 // mimic FTEQW's interpretation of EF_FLAG2 as EF_ADDITIVE on non-player entities
2963                 if (s->number > cl.maxclients)
2964                         s->effects |= EF_ADDITIVE;
2965                 else
2966                         s->internaleffects |= INTEF_FLAG2QW;
2967         }
2968         if (qweffects & QW_EF_RED)
2969         {
2970                 if (qweffects & QW_EF_BLUE)
2971                         s->effects |= EF_RED | EF_BLUE;
2972                 else
2973                         s->effects |= EF_RED;
2974         }
2975         else if (qweffects & QW_EF_BLUE)
2976                 s->effects |= EF_BLUE;
2977         else if (qweffects & QW_EF_BRIGHTLIGHT)
2978                 s->effects |= EF_BRIGHTLIGHT;
2979         else if (qweffects & QW_EF_DIMLIGHT)
2980                 s->effects |= EF_DIMLIGHT;
2981 }
2982
2983 void EntityStateQW_ReadPlayerUpdate(void)
2984 {
2985         int slot = MSG_ReadByte(&cl_message);
2986         int enumber = slot + 1;
2987         int weaponframe;
2988         int msec;
2989         int playerflags;
2990         int bits;
2991         entity_state_t *s;
2992         // look up the entity
2993         entity_t *ent = cl.entities + enumber;
2994         vec3_t viewangles;
2995         vec3_t velocity;
2996
2997         // slide the current state into the previous
2998         ent->state_previous = ent->state_current;
2999
3000         // read the update
3001         s = &ent->state_current;
3002         *s = defaultstate;
3003         s->active = ACTIVE_NETWORK;
3004         s->number = enumber;
3005         s->colormap = enumber;
3006         playerflags = MSG_ReadShort(&cl_message);
3007         MSG_ReadVector(&cl_message, s->origin, cls.protocol);
3008         s->frame = MSG_ReadByte(&cl_message);
3009
3010         VectorClear(viewangles);
3011         VectorClear(velocity);
3012
3013         if (playerflags & QW_PF_MSEC)
3014         {
3015                 // time difference between last update this player sent to the server,
3016                 // and last input we sent to the server (this packet is in response to
3017                 // our input, so msec is how long ago the last update of this player
3018                 // entity occurred, compared to our input being received)
3019                 msec = MSG_ReadByte(&cl_message);
3020         }
3021         else
3022                 msec = 0;
3023         if (playerflags & QW_PF_COMMAND)
3024         {
3025                 bits = MSG_ReadByte(&cl_message);
3026                 if (bits & QW_CM_ANGLE1)
3027                         viewangles[0] = MSG_ReadAngle16i(&cl_message); // cmd->angles[0]
3028                 if (bits & QW_CM_ANGLE2)
3029                         viewangles[1] = MSG_ReadAngle16i(&cl_message); // cmd->angles[1]
3030                 if (bits & QW_CM_ANGLE3)
3031                         viewangles[2] = MSG_ReadAngle16i(&cl_message); // cmd->angles[2]
3032                 if (bits & QW_CM_FORWARD)
3033                         MSG_ReadShort(&cl_message); // cmd->forwardmove
3034                 if (bits & QW_CM_SIDE)
3035                         MSG_ReadShort(&cl_message); // cmd->sidemove
3036                 if (bits & QW_CM_UP)
3037                         MSG_ReadShort(&cl_message); // cmd->upmove
3038                 if (bits & QW_CM_BUTTONS)
3039                         (void) MSG_ReadByte(&cl_message); // cmd->buttons
3040                 if (bits & QW_CM_IMPULSE)
3041                         (void) MSG_ReadByte(&cl_message); // cmd->impulse
3042                 (void) MSG_ReadByte(&cl_message); // cmd->msec
3043         }
3044         if (playerflags & QW_PF_VELOCITY1)
3045                 velocity[0] = MSG_ReadShort(&cl_message);
3046         if (playerflags & QW_PF_VELOCITY2)
3047                 velocity[1] = MSG_ReadShort(&cl_message);
3048         if (playerflags & QW_PF_VELOCITY3)
3049                 velocity[2] = MSG_ReadShort(&cl_message);
3050         if (playerflags & QW_PF_MODEL)
3051                 s->modelindex = MSG_ReadByte(&cl_message);
3052         else
3053                 s->modelindex = cl.qw_modelindex_player;
3054         if (playerflags & QW_PF_SKINNUM)
3055                 s->skin = MSG_ReadByte(&cl_message);
3056         if (playerflags & QW_PF_EFFECTS)
3057                 QW_TranslateEffects(s, MSG_ReadByte(&cl_message));
3058         if (playerflags & QW_PF_WEAPONFRAME)
3059                 weaponframe = MSG_ReadByte(&cl_message);
3060         else
3061                 weaponframe = 0;
3062
3063         if (enumber == cl.playerentity)
3064         {
3065                 // if this is an update on our player, update the angles
3066                 VectorCopy(cl.viewangles, viewangles);
3067         }
3068
3069         // calculate the entity angles from the viewangles
3070         s->angles[0] = viewangles[0] * -0.0333;
3071         s->angles[1] = viewangles[1];
3072         s->angles[2] = 0;
3073         s->angles[2] = V_CalcRoll(s->angles, velocity)*4;
3074
3075         // if this is an update on our player, update interpolation state
3076         if (enumber == cl.playerentity)
3077         {
3078                 VectorCopy (cl.mpunchangle[0], cl.mpunchangle[1]);
3079                 VectorCopy (cl.mpunchvector[0], cl.mpunchvector[1]);
3080                 VectorCopy (cl.mvelocity[0], cl.mvelocity[1]);
3081                 cl.mviewzoom[1] = cl.mviewzoom[0];
3082
3083                 cl.idealpitch = 0;
3084                 cl.mpunchangle[0][0] = 0;
3085                 cl.mpunchangle[0][1] = 0;
3086                 cl.mpunchangle[0][2] = 0;
3087                 cl.mpunchvector[0][0] = 0;
3088                 cl.mpunchvector[0][1] = 0;
3089                 cl.mpunchvector[0][2] = 0;
3090                 cl.mvelocity[0][0] = 0;
3091                 cl.mvelocity[0][1] = 0;
3092                 cl.mvelocity[0][2] = 0;
3093                 cl.mviewzoom[0] = 1;
3094
3095                 VectorCopy(velocity, cl.mvelocity[0]);
3096                 cl.stats[STAT_WEAPONFRAME] = weaponframe;
3097                 if (playerflags & QW_PF_GIB)
3098                         cl.stats[STAT_VIEWHEIGHT] = 8;
3099                 else if (playerflags & QW_PF_DEAD)
3100                         cl.stats[STAT_VIEWHEIGHT] = -16;
3101                 else
3102                         cl.stats[STAT_VIEWHEIGHT] = 22;
3103         }
3104
3105         // set the cl.entities_active flag
3106         cl.entities_active[enumber] = (s->active == ACTIVE_NETWORK);
3107         // set the update time
3108         s->time = cl.mtime[0] - msec * 0.001; // qw has no clock
3109         // check if we need to update the lerp stuff
3110         if (s->active == ACTIVE_NETWORK)
3111                 CL_MoveLerpEntityStates(&cl.entities[enumber]);
3112 }
3113
3114 static void EntityStateQW_ReadEntityUpdate(entity_state_t *s, int bits)
3115 {
3116         int qweffects = 0;
3117         s->active = ACTIVE_NETWORK;
3118         s->number = bits & 511;
3119         bits &= ~511;
3120         if (bits & QW_U_MOREBITS)
3121                 bits |= MSG_ReadByte(&cl_message);
3122
3123         // store the QW_U_SOLID bit here?
3124
3125         if (bits & QW_U_MODEL)
3126                 s->modelindex = MSG_ReadByte(&cl_message);
3127         if (bits & QW_U_FRAME)
3128                 s->frame = MSG_ReadByte(&cl_message);
3129         if (bits & QW_U_COLORMAP)
3130                 s->colormap = MSG_ReadByte(&cl_message);
3131         if (bits & QW_U_SKIN)
3132                 s->skin = MSG_ReadByte(&cl_message);
3133         if (bits & QW_U_EFFECTS)
3134                 QW_TranslateEffects(s, qweffects = MSG_ReadByte(&cl_message));
3135         if (bits & QW_U_ORIGIN1)
3136                 s->origin[0] = MSG_ReadCoord13i(&cl_message);
3137         if (bits & QW_U_ANGLE1)
3138                 s->angles[0] = MSG_ReadAngle8i(&cl_message);
3139         if (bits & QW_U_ORIGIN2)
3140                 s->origin[1] = MSG_ReadCoord13i(&cl_message);
3141         if (bits & QW_U_ANGLE2)
3142                 s->angles[1] = MSG_ReadAngle8i(&cl_message);
3143         if (bits & QW_U_ORIGIN3)
3144                 s->origin[2] = MSG_ReadCoord13i(&cl_message);
3145         if (bits & QW_U_ANGLE3)
3146                 s->angles[2] = MSG_ReadAngle8i(&cl_message);
3147
3148         if (developer_networkentities.integer >= 2)
3149         {
3150                 Con_Printf("ReadFields e%i", s->number);
3151                 if (bits & QW_U_MODEL)
3152                         Con_Printf(" U_MODEL %i", s->modelindex);
3153                 if (bits & QW_U_FRAME)
3154                         Con_Printf(" U_FRAME %i", s->frame);
3155                 if (bits & QW_U_COLORMAP)
3156                         Con_Printf(" U_COLORMAP %i", s->colormap);
3157                 if (bits & QW_U_SKIN)
3158                         Con_Printf(" U_SKIN %i", s->skin);
3159                 if (bits & QW_U_EFFECTS)
3160                         Con_Printf(" U_EFFECTS %i", qweffects);
3161                 if (bits & QW_U_ORIGIN1)
3162                         Con_Printf(" U_ORIGIN1 %f", s->origin[0]);
3163                 if (bits & QW_U_ANGLE1)
3164                         Con_Printf(" U_ANGLE1 %f", s->angles[0]);
3165                 if (bits & QW_U_ORIGIN2)
3166                         Con_Printf(" U_ORIGIN2 %f", s->origin[1]);
3167                 if (bits & QW_U_ANGLE2)
3168                         Con_Printf(" U_ANGLE2 %f", s->angles[1]);
3169                 if (bits & QW_U_ORIGIN3)
3170                         Con_Printf(" U_ORIGIN3 %f", s->origin[2]);
3171                 if (bits & QW_U_ANGLE3)
3172                         Con_Printf(" U_ANGLE3 %f", s->angles[2]);
3173                 if (bits & QW_U_SOLID)
3174                         Con_Printf(" U_SOLID");
3175                 Con_Print("\n");
3176         }
3177 }
3178
3179 entityframeqw_database_t *EntityFrameQW_AllocDatabase(mempool_t *pool)
3180 {
3181         entityframeqw_database_t *d;
3182         d = (entityframeqw_database_t *)Mem_Alloc(pool, sizeof(*d));
3183         return d;
3184 }
3185
3186 void EntityFrameQW_FreeDatabase(entityframeqw_database_t *d)
3187 {
3188         Mem_Free(d);
3189 }
3190
3191 void EntityFrameQW_CL_ReadFrame(qboolean delta)
3192 {
3193         qboolean invalid = false;
3194         int number, oldsnapindex, newsnapindex, oldindex, newindex, oldnum, newnum;
3195         entity_t *ent;
3196         entityframeqw_database_t *d;
3197         entityframeqw_snapshot_t *oldsnap, *newsnap;
3198
3199         if (!cl.entitydatabaseqw)
3200                 cl.entitydatabaseqw = EntityFrameQW_AllocDatabase(cls.levelmempool);
3201         d = cl.entitydatabaseqw;
3202
3203         // there is no cls.netcon in demos, so this reading code can't access
3204         // cls.netcon-> at all...  so cls.qw_incoming_sequence and
3205         // cls.qw_outgoing_sequence are updated every time the corresponding
3206         // cls.netcon->qw. variables are updated
3207         // read the number of this frame to echo back in next input packet
3208         cl.qw_validsequence = cls.qw_incoming_sequence;
3209         newsnapindex = cl.qw_validsequence & QW_UPDATE_MASK;
3210         newsnap = d->snapshot + newsnapindex;
3211         memset(newsnap, 0, sizeof(*newsnap));
3212         oldsnapindex = -1;
3213         oldsnap = NULL;
3214         if (delta)
3215         {
3216                 number = MSG_ReadByte(&cl_message);
3217                 oldsnapindex = cl.qw_deltasequence[newsnapindex];
3218                 if ((number & QW_UPDATE_MASK) != (oldsnapindex & QW_UPDATE_MASK))
3219                         Con_DPrintf("WARNING: from mismatch\n");
3220                 if (oldsnapindex != -1)
3221                 {
3222                         if (cls.qw_outgoing_sequence - oldsnapindex >= QW_UPDATE_BACKUP-1)
3223                         {
3224                                 Con_DPrintf("delta update too old\n");
3225                                 newsnap->invalid = invalid = true; // too old
3226                                 delta = false;
3227                         }
3228                         oldsnap = d->snapshot + (oldsnapindex & QW_UPDATE_MASK);
3229                 }
3230                 else
3231                         delta = false;
3232         }
3233
3234         // if we can't decode this frame properly, report that to the server
3235         if (invalid)
3236                 cl.qw_validsequence = 0;
3237
3238         // read entity numbers until we find a 0x0000
3239         // (which would be an empty update on world entity, but is actually a terminator)
3240         newsnap->num_entities = 0;
3241         oldindex = 0;
3242         for (;;)
3243         {
3244                 int word = (unsigned short)MSG_ReadShort(&cl_message);
3245                 if (cl_message.badread)
3246                         return; // just return, the main parser will print an error
3247                 newnum = word == 0 ? 512 : (word & 511);
3248                 oldnum = delta ? (oldindex >= oldsnap->num_entities ? 9999 : oldsnap->entities[oldindex].number) : 9999;
3249
3250                 // copy unmodified oldsnap entities
3251                 while (newnum > oldnum) // delta only
3252                 {
3253                         if (developer_networkentities.integer >= 2)
3254                                 Con_Printf("copy %i\n", oldnum);
3255                         // copy one of the old entities
3256                         if (newsnap->num_entities >= QW_MAX_PACKET_ENTITIES)
3257                                 Host_Error("EntityFrameQW_CL_ReadFrame: newsnap->num_entities == MAX_PACKETENTITIES");
3258                         newsnap->entities[newsnap->num_entities] = oldsnap->entities[oldindex++];
3259                         newsnap->num_entities++;
3260                         oldnum = oldindex >= oldsnap->num_entities ? 9999 : oldsnap->entities[oldindex].number;
3261                 }
3262
3263                 if (word == 0)
3264                         break;
3265
3266                 if (developer_networkentities.integer >= 2)
3267                 {
3268                         if (word & QW_U_REMOVE)
3269                                 Con_Printf("remove %i\n", newnum);
3270                         else if (newnum == oldnum)
3271                                 Con_Printf("delta %i\n", newnum);
3272                         else
3273                                 Con_Printf("baseline %i\n", newnum);
3274                 }
3275
3276                 if (word & QW_U_REMOVE)
3277                 {
3278                         if (newnum != oldnum && !delta && !invalid)
3279                         {
3280                                 cl.qw_validsequence = 0;
3281                                 Con_Printf("WARNING: U_REMOVE %i on full update\n", newnum);
3282                         }
3283                 }
3284                 else
3285                 {
3286                         if (newsnap->num_entities >= QW_MAX_PACKET_ENTITIES)
3287                                 Host_Error("EntityFrameQW_CL_ReadFrame: newsnap->num_entities == MAX_PACKETENTITIES");
3288                         newsnap->entities[newsnap->num_entities] = (newnum == oldnum) ? oldsnap->entities[oldindex] : cl.entities[newnum].state_baseline;
3289                         EntityStateQW_ReadEntityUpdate(newsnap->entities + newsnap->num_entities, word);
3290                         newsnap->num_entities++;
3291                 }
3292
3293                 if (newnum == oldnum)
3294                         oldindex++;
3295         }
3296
3297         // expand cl.num_entities to include every entity we've seen this game
3298         newnum = newsnap->num_entities ? newsnap->entities[newsnap->num_entities - 1].number : 1;
3299         if (cl.num_entities <= newnum)
3300         {
3301                 cl.num_entities = newnum + 1;
3302                 if (cl.max_entities < newnum + 1)
3303                         CL_ExpandEntities(newnum);
3304         }
3305
3306         // now update the non-player entities from the snapshot states
3307         number = cl.maxclients + 1;
3308         for (newindex = 0;;newindex++)
3309         {
3310                 newnum = newindex >= newsnap->num_entities ? cl.num_entities : newsnap->entities[newindex].number;
3311                 // kill any missing entities
3312                 for (;number < newnum;number++)
3313                 {
3314                         if (cl.entities_active[number])
3315                         {
3316                                 cl.entities_active[number] = false;
3317                                 cl.entities[number].state_current.active = ACTIVE_NOT;
3318                         }
3319                 }
3320                 if (number >= cl.num_entities)
3321                         break;
3322                 // update the entity
3323                 ent = &cl.entities[number];
3324                 ent->state_previous = ent->state_current;
3325                 ent->state_current = newsnap->entities[newindex];
3326                 ent->state_current.time = cl.mtime[0];
3327                 CL_MoveLerpEntityStates(ent);
3328                 // the entity lives again...
3329                 cl.entities_active[number] = true;
3330                 number++;
3331         }
3332 }