prvm_edict.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // AK new vm
  21
  22 #include "quakedef.h"
  23 #include "progsvm.h"
  24
  25 prvm_prog_t *prog;
  26
  27 static prvm_prog_t prog_list[PRVM_MAXPROGS];
  28
  29 int             prvm_type_size[8] = {1,sizeof(string_t)/4,1,3,1,1,sizeof(func_t)/4,sizeof(void *)/4};
  30
  31 ddef_t *PRVM_ED_FieldAtOfs(int ofs);
  32 qboolean PRVM_ED_ParseEpair(prvm_edict_t *ent, ddef_t *key, const char *s);
  33
  34 // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
  35 cvar_t prvm_boundscheck = {0, "prvm_boundscheck", "1", "enables detection of out of bounds memory access in the QuakeC code being run (in other words, prevents really exceedingly bad QuakeC code from doing nasty things to your computer)"};
  36 // LordHavoc: prints every opcode as it executes - warning: this is significant spew
  37 cvar_t prvm_traceqc = {0, "prvm_traceqc", "0", "prints every QuakeC statement as it is executed (only for really thorough debugging!)"};
  38 // LordHavoc: counts usage of each QuakeC statement
  39 cvar_t prvm_statementprofiling = {0, "prvm_statementprofiling", "0", "counts how many times each QuakeC statement has been executed, these counts are displayed in prvm_printfunction output (if enabled)"};
  40
  41 extern sizebuf_t vm_tempstringsbuf;
  42
  43 //============================================================================
  44 // mempool handling
  45
  46 /*
  47 ===============
  48 PRVM_MEM_Alloc
  49 ===============
  50 */
  51 void PRVM_MEM_Alloc(void)
  52 {
  53         int i;
  54
  55         // reserve space for the null entity aka world
  56         // check bound of max_edicts
  57         prog->max_edicts = bound(1 + prog->reserved_edicts, prog->max_edicts, prog->limit_edicts);
  58         prog->num_edicts = bound(1 + prog->reserved_edicts, prog->num_edicts, prog->max_edicts);
  59
  60         // edictprivate_size has to be min as big prvm_edict_private_t
  61         prog->edictprivate_size = max(prog->edictprivate_size,(int)sizeof(prvm_edict_private_t));
  62
  63         // alloc edicts
  64         prog->edicts = (prvm_edict_t *)Mem_Alloc(prog->progs_mempool,prog->limit_edicts * sizeof(prvm_edict_t));
  65
  66         // alloc edict private space
  67         prog->edictprivate = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edictprivate_size);
  68
  69         // alloc edict fields
  70         prog->edictsfields = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edict_size);
  71
  72         // set edict pointers
  73         for(i = 0; i < prog->max_edicts; i++)
  74         {
  75                 prog->edicts[i].priv.required = (prvm_edict_private_t *)((unsigned char  *)prog->edictprivate + i * prog->edictprivate_size);
  76                 prog->edicts[i].fields.vp = (void*)((unsigned char *)prog->edictsfields + i * prog->edict_size);
  77         }
  78 }
  79
  80 /*
  81 ===============
  82 PRVM_MEM_IncreaseEdicts
  83 ===============
  84 */
  85 void PRVM_MEM_IncreaseEdicts(void)
  86 {
  87         int             i;
  88         int             oldmaxedicts = prog->max_edicts;
  89         void    *oldedictsfields = prog->edictsfields;
  90         void    *oldedictprivate = prog->edictprivate;
  91
  92         if(prog->max_edicts >= prog->limit_edicts)
  93                 return;
  94
  95         PRVM_GCALL(begin_increase_edicts)();
  96
  97         // increase edicts
  98         prog->max_edicts = min(prog->max_edicts + 256, prog->limit_edicts);
  99
 100         prog->edictsfields = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edict_size);
 101         prog->edictprivate = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edictprivate_size);
 102
 103         memcpy(prog->edictsfields, oldedictsfields, oldmaxedicts * prog->edict_size);
 104         memcpy(prog->edictprivate, oldedictprivate, oldmaxedicts * prog->edictprivate_size);
 105
 106         //set e and v pointers
 107         for(i = 0; i < prog->max_edicts; i++)
 108         {
 109                 prog->edicts[i].priv.required  = (prvm_edict_private_t *)((unsigned char  *)prog->edictprivate + i * prog->edictprivate_size);
 110                 prog->edicts[i].fields.vp = (void*)((unsigned char *)prog->edictsfields + i * prog->edict_size);
 111         }
 112
 113         PRVM_GCALL(end_increase_edicts)();
 114
 115         Mem_Free(oldedictsfields);
 116         Mem_Free(oldedictprivate);
 117 }
 118
 119 //============================================================================
 120 // normal prvm
 121
 122 int PRVM_ED_FindFieldOffset(const char *field)
 123 {
 124         ddef_t *d;
 125         d = PRVM_ED_FindField(field);
 126         if (!d)
 127                 return -1;
 128         return d->ofs;
 129 }
 130
 131 int PRVM_ED_FindGlobalOffset(const char *global)
 132 {
 133         ddef_t *d;
 134         d = PRVM_ED_FindGlobal(global);
 135         if (!d)
 136                 return -1;
 137         return d->ofs;
 138 }
 139
 140 func_t PRVM_ED_FindFunctionOffset(const char *function)
 141 {
 142         mfunction_t *f;
 143         f = PRVM_ED_FindFunction(function);
 144         if (!f)
 145                 return 0;
 146         return (func_t)(f - prog->functions);
 147 }
 148
 149 qboolean PRVM_ProgLoaded(int prognr)
 150 {
 151         if(prognr < 0 || prognr >= PRVM_MAXPROGS)
 152                 return FALSE;
 153
 154         return (prog_list[prognr].loaded ? TRUE : FALSE);
 155 }
 156
 157 /*
 158 =================
 159 PRVM_SetProgFromString
 160 =================
 161 */
 162 // perhaps add a return value when the str doesnt exist
 163 qboolean PRVM_SetProgFromString(const char *str)
 164 {
 165         int i = 0;
 166         for(; i < PRVM_MAXPROGS ; i++)
 167                 if(prog_list[i].name && !strcmp(prog_list[i].name,str))
 168                 {
 169                         if(prog_list[i].loaded)
 170                         {
 171                                 prog = &prog_list[i];
 172                                 return TRUE;
 173                         }
 174                         else
 175                         {
 176                                 Con_Printf("%s not loaded !\n",PRVM_NAME);
 177                                 return FALSE;
 178                         }
 179                 }
 180
 181         Con_Printf("Invalid program name %s !\n", str);
 182         return FALSE;
 183 }
 184
 185 /*
 186 =================
 187 PRVM_SetProg
 188 =================
 189 */
 190 void PRVM_SetProg(int prognr)
 191 {
 192         if(0 <= prognr && prognr < PRVM_MAXPROGS)
 193         {
 194                 if(prog_list[prognr].loaded)
 195                         prog = &prog_list[prognr];
 196                 else
 197                         PRVM_ERROR("%i not loaded !", prognr);
 198                 return;
 199         }
 200         PRVM_ERROR("Invalid program number %i", prognr);
 201 }
 202
 203 /*
 204 =================
 205 PRVM_ED_ClearEdict
 206
 207 Sets everything to NULL
 208 =================
 209 */
 210 void PRVM_ED_ClearEdict (prvm_edict_t *e)
 211 {
 212         memset (e->fields.vp, 0, prog->progs->entityfields * 4);
 213         e->priv.required->free = false;
 214
 215         // AK: Let the init_edict function determine if something needs to be initialized
 216         PRVM_GCALL(init_edict)(e);
 217 }
 218
 219 /*
 220 =================
 221 PRVM_ED_Alloc
 222
 223 Either finds a free edict, or allocates a new one.
 224 Try to avoid reusing an entity that was recently freed, because it
 225 can cause the client to think the entity morphed into something else
 226 instead of being removed and recreated, which can cause interpolated
 227 angles and bad trails.
 228 =================
 229 */
 230 prvm_edict_t *PRVM_ED_Alloc (void)
 231 {
 232         int                     i;
 233         prvm_edict_t            *e;
 234
 235         // the client qc dont need maxclients
 236         // thus it doesnt need to use svs.maxclients
 237         // AK:  changed i=svs.maxclients+1
 238         // AK:  changed so the edict 0 wont spawn -> used as reserved/world entity
 239         //              although the menu/client has no world
 240         for (i = prog->reserved_edicts + 1;i < prog->num_edicts;i++)
 241         {
 242                 e = PRVM_EDICT_NUM(i);
 243                 // the first couple seconds of server time can involve a lot of
 244                 // freeing and allocating, so relax the replacement policy
 245                 if (e->priv.required->free && ( e->priv.required->freetime < 2 || prog->globaloffsets.time < 0 || (PRVM_GLOBALFIELDVALUE(prog->globaloffsets.time)->_float - e->priv.required->freetime) > 0.5 ) )
 246                 {
 247                         PRVM_ED_ClearEdict (e);
 248                         return e;
 249                 }
 250         }
 251
 252         if (i == prog->limit_edicts)
 253                 PRVM_ERROR ("%s: PRVM_ED_Alloc: no free edicts",PRVM_NAME);
 254
 255         prog->num_edicts++;
 256         if (prog->num_edicts >= prog->max_edicts)
 257                 PRVM_MEM_IncreaseEdicts();
 258
 259         e = PRVM_EDICT_NUM(i);
 260         PRVM_ED_ClearEdict (e);
 261
 262         return e;
 263 }
 264
 265 /*
 266 =================
 267 PRVM_ED_Free
 268
 269 Marks the edict as free
 270 FIXME: walk all entities and NULL out references to this entity
 271 =================
 272 */
 273 void PRVM_ED_Free (prvm_edict_t *ed)
 274 {
 275         // dont delete the null entity (world) or reserved edicts
 276         if(PRVM_NUM_FOR_EDICT(ed) <= prog->reserved_edicts )
 277                 return;
 278
 279         PRVM_GCALL(free_edict)(ed);
 280
 281         ed->priv.required->free = true;
 282         ed->priv.required->freetime = prog->globaloffsets.time >= 0 ? PRVM_GLOBALFIELDVALUE(prog->globaloffsets.time)->_float : 0;
 283 }
 284
 285 //===========================================================================
 286
 287 /*
 288 ============
 289 PRVM_ED_GlobalAtOfs
 290 ============
 291 */
 292 ddef_t *PRVM_ED_GlobalAtOfs (int ofs)
 293 {
 294         ddef_t          *def;
 295         int                     i;
 296
 297         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
 298         {
 299                 def = &prog->globaldefs[i];
 300                 if (def->ofs == ofs)
 301                         return def;
 302         }
 303         return NULL;
 304 }
 305
 306 /*
 307 ============
 308 PRVM_ED_FieldAtOfs
 309 ============
 310 */
 311 ddef_t *PRVM_ED_FieldAtOfs (int ofs)
 312 {
 313         ddef_t          *def;
 314         int                     i;
 315
 316         for (i=0 ; i<prog->progs->numfielddefs ; i++)
 317         {
 318                 def = &prog->fielddefs[i];
 319                 if (def->ofs == ofs)
 320                         return def;
 321         }
 322         return NULL;
 323 }
 324
 325 /*
 326 ============
 327 PRVM_ED_FindField
 328 ============
 329 */
 330 ddef_t *PRVM_ED_FindField (const char *name)
 331 {
 332         ddef_t *def;
 333         int i;
 334
 335         for (i=0 ; i<prog->progs->numfielddefs ; i++)
 336         {
 337                 def = &prog->fielddefs[i];
 338                 if (!strcmp(PRVM_GetString(def->s_name), name))
 339                         return def;
 340         }
 341         return NULL;
 342 }
 343
 344 /*
 345 ============
 346 PRVM_ED_FindGlobal
 347 ============
 348 */
 349 ddef_t *PRVM_ED_FindGlobal (const char *name)
 350 {
 351         ddef_t *def;
 352         int i;
 353
 354         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
 355         {
 356                 def = &prog->globaldefs[i];
 357                 if (!strcmp(PRVM_GetString(def->s_name), name))
 358                         return def;
 359         }
 360         return NULL;
 361 }
 362
 363
 364 /*
 365 ============
 366 PRVM_ED_FindFunction
 367 ============
 368 */
 369 mfunction_t *PRVM_ED_FindFunction (const char *name)
 370 {
 371         mfunction_t             *func;
 372         int                             i;
 373
 374         for (i=0 ; i<prog->progs->numfunctions ; i++)
 375         {
 376                 func = &prog->functions[i];
 377                 if (!strcmp(PRVM_GetString(func->s_name), name))
 378                         return func;
 379         }
 380         return NULL;
 381 }
 382
 383
 384 /*
 385 ============
 386 PRVM_ValueString
 387
 388 Returns a string describing *data in a type specific manner
 389 =============
 390 */
 391 char *PRVM_ValueString (etype_t type, prvm_eval_t *val)
 392 {
 393         static char line[MAX_INPUTLINE];
 394         ddef_t *def;
 395         mfunction_t *f;
 396         int n;
 397
 398         type = (etype_t)((int) type & ~DEF_SAVEGLOBAL);
 399
 400         switch (type)
 401         {
 402         case ev_string:
 403                 strlcpy (line, PRVM_GetString (val->string), sizeof (line));
 404                 break;
 405         case ev_entity:
 406                 n = val->edict;
 407                 if (n < 0 || n >= prog->limit_edicts)
 408                         sprintf (line, "entity %i (invalid!)", n);
 409                 else
 410                         sprintf (line, "entity %i", n);
 411                 break;
 412         case ev_function:
 413                 f = prog->functions + val->function;
 414                 sprintf (line, "%s()", PRVM_GetString(f->s_name));
 415                 break;
 416         case ev_field:
 417                 def = PRVM_ED_FieldAtOfs ( val->_int );
 418                 sprintf (line, ".%s", PRVM_GetString(def->s_name));
 419                 break;
 420         case ev_void:
 421                 sprintf (line, "void");
 422                 break;
 423         case ev_float:
 424                 // LordHavoc: changed from %5.1f to %10.4f
 425                 sprintf (line, "%10.4f", val->_float);
 426                 break;
 427         case ev_vector:
 428                 // LordHavoc: changed from %5.1f to %10.4f
 429                 sprintf (line, "'%10.4f %10.4f %10.4f'", val->vector[0], val->vector[1], val->vector[2]);
 430                 break;
 431         case ev_pointer:
 432                 sprintf (line, "pointer");
 433                 break;
 434         default:
 435                 sprintf (line, "bad type %i", (int) type);
 436                 break;
 437         }
 438
 439         return line;
 440 }
 441
 442 /*
 443 ============
 444 PRVM_UglyValueString
 445
 446 Returns a string describing *data in a type specific manner
 447 Easier to parse than PR_ValueString
 448 =============
 449 */
 450 char *PRVM_UglyValueString (etype_t type, prvm_eval_t *val)
 451 {
 452         static char line[MAX_INPUTLINE];
 453         int i;
 454         const char *s;
 455         ddef_t *def;
 456         mfunction_t *f;
 457
 458         type = (etype_t)((int)type & ~DEF_SAVEGLOBAL);
 459
 460         switch (type)
 461         {
 462         case ev_string:
 463                 // Parse the string a bit to turn special characters
 464                 // (like newline, specifically) into escape codes,
 465                 // this fixes saving games from various mods
 466                 s = PRVM_GetString (val->string);
 467                 for (i = 0;i < (int)sizeof(line) - 2 && *s;)
 468                 {
 469                         if (*s == '\n')
 470                         {
 471                                 line[i++] = '\\';
 472                                 line[i++] = 'n';
 473                         }
 474                         else if (*s == '\r')
 475                         {
 476                                 line[i++] = '\\';
 477                                 line[i++] = 'r';
 478                         }
 479                         else
 480                                 line[i++] = *s;
 481                         s++;
 482                 }
 483                 line[i] = '\0';
 484                 break;
 485         case ev_entity:
 486                 dpsnprintf (line, sizeof (line), "%i", PRVM_NUM_FOR_EDICT(PRVM_PROG_TO_EDICT(val->edict)));
 487                 break;
 488         case ev_function:
 489                 f = prog->functions + val->function;
 490                 strlcpy (line, PRVM_GetString (f->s_name), sizeof (line));
 491                 break;
 492         case ev_field:
 493                 def = PRVM_ED_FieldAtOfs ( val->_int );
 494                 dpsnprintf (line, sizeof (line), ".%s", PRVM_GetString(def->s_name));
 495                 break;
 496         case ev_void:
 497                 dpsnprintf (line, sizeof (line), "void");
 498                 break;
 499         case ev_float:
 500                 dpsnprintf (line, sizeof (line), "%f", val->_float);
 501                 break;
 502         case ev_vector:
 503                 dpsnprintf (line, sizeof (line), "%f %f %f", val->vector[0], val->vector[1], val->vector[2]);
 504                 break;
 505         default:
 506                 dpsnprintf (line, sizeof (line), "bad type %i", type);
 507                 break;
 508         }
 509
 510         return line;
 511 }
 512
 513 /*
 514 ============
 515 PRVM_GlobalString
 516
 517 Returns a string with a description and the contents of a global,
 518 padded to 20 field width
 519 ============
 520 */
 521 char *PRVM_GlobalString (int ofs)
 522 {
 523         char    *s;
 524         //size_t        i;
 525         ddef_t  *def;
 526         void    *val;
 527         static char     line[128];
 528
 529         val = (void *)&prog->globals.generic[ofs];
 530         def = PRVM_ED_GlobalAtOfs(ofs);
 531         if (!def)
 532                 sprintf (line,"GLOBAL%i", ofs);
 533         else
 534         {
 535                 s = PRVM_ValueString ((etype_t)def->type, (prvm_eval_t *)val);
 536                 sprintf (line,"%s (=%s)", PRVM_GetString(def->s_name), s);
 537         }
 538
 539         //i = strlen(line);
 540         //for ( ; i<20 ; i++)
 541         //      strcat (line," ");
 542         //strcat (line," ");
 543
 544         return line;
 545 }
 546
 547 char *PRVM_GlobalStringNoContents (int ofs)
 548 {
 549         //size_t        i;
 550         ddef_t  *def;
 551         static char     line[128];
 552
 553         def = PRVM_ED_GlobalAtOfs(ofs);
 554         if (!def)
 555                 sprintf (line,"GLOBAL%i", ofs);
 556         else
 557                 sprintf (line,"%s", PRVM_GetString(def->s_name));
 558
 559         //i = strlen(line);
 560         //for ( ; i<20 ; i++)
 561         //      strcat (line," ");
 562         //strcat (line," ");
 563
 564         return line;
 565 }
 566
 567
 568 /*
 569 =============
 570 PRVM_ED_Print
 571
 572 For debugging
 573 =============
 574 */
 575 // LordHavoc: optimized this to print out much more quickly (tempstring)
 576 // LordHavoc: changed to print out every 4096 characters (incase there are a lot of fields to print)
 577 void PRVM_ED_Print(prvm_edict_t *ed, const char *wildcard_fieldname)
 578 {
 579         size_t  l;
 580         ddef_t  *d;
 581         int             *v;
 582         int             i, j;
 583         const char      *name;
 584         int             type;
 585         char    tempstring[MAX_INPUTLINE], tempstring2[260]; // temporary string buffers
 586
 587         if (ed->priv.required->free)
 588         {
 589                 Con_Printf("%s: FREE\n",PRVM_NAME);
 590                 return;
 591         }
 592
 593         tempstring[0] = 0;
 594         sprintf(tempstring, "\n%s EDICT %i:\n", PRVM_NAME, PRVM_NUM_FOR_EDICT(ed));
 595         for (i=1 ; i<prog->progs->numfielddefs ; i++)
 596         {
 597                 d = &prog->fielddefs[i];
 598                 name = PRVM_GetString(d->s_name);
 599                 if (name[strlen(name)-2] == '_')
 600                         continue;       // skip _x, _y, _z vars
 601
 602                 // Check Field Name Wildcard
 603                 if(wildcard_fieldname)
 604                         if( !matchpattern(name, wildcard_fieldname, 1) )
 605                                 // Didn't match; skip
 606                                 continue;
 607
 608                 v = (int *)((char *)ed->fields.vp + d->ofs*4);
 609
 610         // if the value is still all 0, skip the field
 611                 type = d->type & ~DEF_SAVEGLOBAL;
 612
 613                 for (j=0 ; j<prvm_type_size[type] ; j++)
 614                         if (v[j])
 615                                 break;
 616                 if (j == prvm_type_size[type])
 617                         continue;
 618
 619                 if (strlen(name) > sizeof(tempstring2)-4)
 620                 {
 621                         memcpy (tempstring2, name, sizeof(tempstring2)-4);
 622                         tempstring2[sizeof(tempstring2)-4] = tempstring2[sizeof(tempstring2)-3] = tempstring2[sizeof(tempstring2)-2] = '.';
 623                         tempstring2[sizeof(tempstring2)-1] = 0;
 624                         name = tempstring2;
 625                 }
 626                 strlcat(tempstring, name, sizeof(tempstring));
 627                 for (l = strlen(name);l < 14;l++)
 628                         strlcat(tempstring, " ", sizeof(tempstring));
 629                 strlcat(tempstring, " ", sizeof(tempstring));
 630
 631                 name = PRVM_ValueString((etype_t)d->type, (prvm_eval_t *)v);
 632                 if (strlen(name) > sizeof(tempstring2)-4)
 633                 {
 634                         memcpy (tempstring2, name, sizeof(tempstring2)-4);
 635                         tempstring2[sizeof(tempstring2)-4] = tempstring2[sizeof(tempstring2)-3] = tempstring2[sizeof(tempstring2)-2] = '.';
 636                         tempstring2[sizeof(tempstring2)-1] = 0;
 637                         name = tempstring2;
 638                 }
 639                 strlcat(tempstring, name, sizeof(tempstring));
 640                 strlcat(tempstring, "\n", sizeof(tempstring));
 641                 if (strlen(tempstring) >= sizeof(tempstring)/2)
 642                 {
 643                         Con_Print(tempstring);
 644                         tempstring[0] = 0;
 645                 }
 646         }
 647         if (tempstring[0])
 648                 Con_Print(tempstring);
 649 }
 650
 651 /*
 652 =============
 653 PRVM_ED_Write
 654
 655 For savegames
 656 =============
 657 */
 658 void PRVM_ED_Write (qfile_t *f, prvm_edict_t *ed)
 659 {
 660         ddef_t  *d;
 661         int             *v;
 662         int             i, j;
 663         const char      *name;
 664         int             type;
 665
 666         FS_Print(f, "{\n");
 667
 668         if (ed->priv.required->free)
 669         {
 670                 FS_Print(f, "}\n");
 671                 return;
 672         }
 673
 674         for (i=1 ; i<prog->progs->numfielddefs ; i++)
 675         {
 676                 d = &prog->fielddefs[i];
 677                 name = PRVM_GetString(d->s_name);
 678                 if (name[strlen(name)-2] == '_')
 679                         continue;       // skip _x, _y, _z vars
 680
 681                 v = (int *)((char *)ed->fields.vp + d->ofs*4);
 682
 683         // if the value is still all 0, skip the field
 684                 type = d->type & ~DEF_SAVEGLOBAL;
 685                 for (j=0 ; j<prvm_type_size[type] ; j++)
 686                         if (v[j])
 687                                 break;
 688                 if (j == prvm_type_size[type])
 689                         continue;
 690
 691                 FS_Printf(f,"\"%s\" ",name);
 692                 FS_Printf(f,"\"%s\"\n", PRVM_UglyValueString((etype_t)d->type, (prvm_eval_t *)v));
 693         }
 694
 695         FS_Print(f, "}\n");
 696 }
 697
 698 void PRVM_ED_PrintNum (int ent, const char *wildcard_fieldname)
 699 {
 700         PRVM_ED_Print(PRVM_EDICT_NUM(ent), wildcard_fieldname);
 701 }
 702
 703 /*
 704 =============
 705 PRVM_ED_PrintEdicts_f
 706
 707 For debugging, prints all the entities in the current server
 708 =============
 709 */
 710 void PRVM_ED_PrintEdicts_f (void)
 711 {
 712         int             i;
 713         const char *wildcard_fieldname;
 714
 715         if(Cmd_Argc() < 2 || Cmd_Argc() > 3)
 716         {
 717                 Con_Print("prvm_edicts <program name> <optional field name wildcard>\n");
 718                 return;
 719         }
 720
 721         PRVM_Begin;
 722         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 723                 return;
 724
 725         if( Cmd_Argc() == 3)
 726                 wildcard_fieldname = Cmd_Argv(2);
 727         else
 728                 wildcard_fieldname = NULL;
 729
 730         Con_Printf("%s: %i entities\n", PRVM_NAME, prog->num_edicts);
 731         for (i=0 ; i<prog->num_edicts ; i++)
 732                 PRVM_ED_PrintNum (i, wildcard_fieldname);
 733
 734         PRVM_End;
 735 }
 736
 737 /*
 738 =============
 739 PRVM_ED_PrintEdict_f
 740
 741 For debugging, prints a single edict
 742 =============
 743 */
 744 void PRVM_ED_PrintEdict_f (void)
 745 {
 746         int             i;
 747         const char      *wildcard_fieldname;
 748
 749         if(Cmd_Argc() < 3 || Cmd_Argc() > 4)
 750         {
 751                 Con_Print("prvm_edict <program name> <edict number> <optional field name wildcard>\n");
 752                 return;
 753         }
 754
 755         PRVM_Begin;
 756         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 757                 return;
 758
 759         i = atoi (Cmd_Argv(2));
 760         if (i >= prog->num_edicts)
 761         {
 762                 Con_Print("Bad edict number\n");
 763                 PRVM_End;
 764                 return;
 765         }
 766         if( Cmd_Argc() == 4)
 767                 // Optional Wildcard Provided
 768                 wildcard_fieldname = Cmd_Argv(3);
 769         else
 770                 // Use All
 771                 wildcard_fieldname = NULL;
 772         PRVM_ED_PrintNum (i, wildcard_fieldname);
 773
 774         PRVM_End;
 775 }
 776
 777 /*
 778 =============
 779 PRVM_ED_Count
 780
 781 For debugging
 782 =============
 783 */
 784 // 2 possibilities : 1. just displaying the active edict count
 785 //                                       2. making a function pointer [x]
 786 void PRVM_ED_Count_f (void)
 787 {
 788         int             i;
 789         prvm_edict_t    *ent;
 790         int             active;
 791
 792         if(Cmd_Argc() != 2)
 793         {
 794                 Con_Print("prvm_count <program name>\n");
 795                 return;
 796         }
 797
 798         PRVM_Begin;
 799         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 800                 return;
 801
 802         if(prog->count_edicts)
 803                 prog->count_edicts();
 804         else
 805         {
 806                 active = 0;
 807                 for (i=0 ; i<prog->num_edicts ; i++)
 808                 {
 809                         ent = PRVM_EDICT_NUM(i);
 810                         if (ent->priv.required->free)
 811                                 continue;
 812                         active++;
 813                 }
 814
 815                 Con_Printf("num_edicts:%3i\n", prog->num_edicts);
 816                 Con_Printf("active    :%3i\n", active);
 817         }
 818
 819         PRVM_End;
 820 }
 821
 822 /*
 823 ==============================================================================
 824
 825                                         ARCHIVING GLOBALS
 826
 827 FIXME: need to tag constants, doesn't really work
 828 ==============================================================================
 829 */
 830
 831 /*
 832 =============
 833 PRVM_ED_WriteGlobals
 834 =============
 835 */
 836 void PRVM_ED_WriteGlobals (qfile_t *f)
 837 {
 838         ddef_t          *def;
 839         int                     i;
 840         const char              *name;
 841         int                     type;
 842
 843         FS_Print(f,"{\n");
 844         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
 845         {
 846                 def = &prog->globaldefs[i];
 847                 type = def->type;
 848                 if ( !(def->type & DEF_SAVEGLOBAL) )
 849                         continue;
 850                 type &= ~DEF_SAVEGLOBAL;
 851
 852                 if (type != ev_string && type != ev_float && type != ev_entity)
 853                         continue;
 854
 855                 name = PRVM_GetString(def->s_name);
 856                 FS_Printf(f,"\"%s\" ", name);
 857                 FS_Printf(f,"\"%s\"\n", PRVM_UglyValueString((etype_t)type, (prvm_eval_t *)&prog->globals.generic[def->ofs]));
 858         }
 859         FS_Print(f,"}\n");
 860 }
 861
 862 /*
 863 =============
 864 PRVM_ED_ParseGlobals
 865 =============
 866 */
 867 void PRVM_ED_ParseGlobals (const char *data)
 868 {
 869         char keyname[MAX_INPUTLINE];
 870         ddef_t *key;
 871
 872         while (1)
 873         {
 874                 // parse key
 875                 if (!COM_ParseToken_Simple(&data, false))
 876                         PRVM_ERROR ("PRVM_ED_ParseGlobals: EOF without closing brace");
 877                 if (com_token[0] == '}')
 878                         break;
 879
 880                 strlcpy (keyname, com_token, sizeof(keyname));
 881
 882                 // parse value
 883                 if (!COM_ParseToken_Simple(&data, false))
 884                         PRVM_ERROR ("PRVM_ED_ParseGlobals: EOF without closing brace");
 885
 886                 if (com_token[0] == '}')
 887                         PRVM_ERROR ("PRVM_ED_ParseGlobals: closing brace without data");
 888
 889                 key = PRVM_ED_FindGlobal (keyname);
 890                 if (!key)
 891                 {
 892                         Con_DPrintf("'%s' is not a global on %s\n", keyname, PRVM_NAME);
 893                         continue;
 894                 }
 895
 896                 if (!PRVM_ED_ParseEpair(NULL, key, com_token))
 897                         PRVM_ERROR ("PRVM_ED_ParseGlobals: parse error");
 898         }
 899 }
 900
 901 //============================================================================
 902
 903
 904 /*
 905 =============
 906 PRVM_ED_ParseEval
 907
 908 Can parse either fields or globals
 909 returns false if error
 910 =============
 911 */
 912 qboolean PRVM_ED_ParseEpair(prvm_edict_t *ent, ddef_t *key, const char *s)
 913 {
 914         int i, l;
 915         char *new_p;
 916         ddef_t *def;
 917         prvm_eval_t *val;
 918         mfunction_t *func;
 919
 920         if (ent)
 921                 val = (prvm_eval_t *)((int *)ent->fields.vp + key->ofs);
 922         else
 923                 val = (prvm_eval_t *)((int *)prog->globals.generic + key->ofs);
 924         switch (key->type & ~DEF_SAVEGLOBAL)
 925         {
 926         case ev_string:
 927                 l = (int)strlen(s) + 1;
 928                 val->string = PRVM_AllocString(l, &new_p);
 929                 for (i = 0;i < l;i++)
 930                 {
 931                         if (s[i] == '\\' && i < l-1)
 932                         {
 933                                 i++;
 934                                 if (s[i] == 'n')
 935                                         *new_p++ = '\n';
 936                                 else if (s[i] == 'r')
 937                                         *new_p++ = '\r';
 938                                 else
 939                                         *new_p++ = s[i];
 940                         }
 941                         else
 942                                 *new_p++ = s[i];
 943                 }
 944                 break;
 945
 946         case ev_float:
 947                 while (*s && *s <= ' ')
 948                         s++;
 949                 val->_float = atof(s);
 950                 break;
 951
 952         case ev_vector:
 953                 for (i = 0;i < 3;i++)
 954                 {
 955                         while (*s && *s <= ' ')
 956                                 s++;
 957                         if (!*s)
 958                                 break;
 959                         val->vector[i] = atof(s);
 960                         while (*s > ' ')
 961                                 s++;
 962                         if (!*s)
 963                                 break;
 964                 }
 965                 break;
 966
 967         case ev_entity:
 968                 while (*s && *s <= ' ')
 969                         s++;
 970                 i = atoi(s);
 971                 if (i >= prog->limit_edicts)
 972                         Con_Printf("PRVM_ED_ParseEpair: ev_entity reference too large (edict %u >= MAX_EDICTS %u) on %s\n", (unsigned int)i, (unsigned int)MAX_EDICTS, PRVM_NAME);
 973                 while (i >= prog->max_edicts)
 974                         PRVM_MEM_IncreaseEdicts();
 975                 // if IncreaseEdicts was called the base pointer needs to be updated
 976                 if (ent)
 977                         val = (prvm_eval_t *)((int *)ent->fields.vp + key->ofs);
 978                 val->edict = PRVM_EDICT_TO_PROG(PRVM_EDICT_NUM((int)i));
 979                 break;
 980
 981         case ev_field:
 982                 def = PRVM_ED_FindField(s);
 983                 if (!def)
 984                 {
 985                         Con_DPrintf("PRVM_ED_ParseEpair: Can't find field %s in %s\n", s, PRVM_NAME);
 986                         return false;
 987                 }
 988                 val->_int = def->ofs;
 989                 break;
 990
 991         case ev_function:
 992                 func = PRVM_ED_FindFunction(s);
 993                 if (!func)
 994                 {
 995                         Con_Printf("PRVM_ED_ParseEpair: Can't find function %s in %s\n", s, PRVM_NAME);
 996                         return false;
 997                 }
 998                 val->function = func - prog->functions;
 999                 break;
1000
1001         default:
1002                 Con_Printf("PRVM_ED_ParseEpair: Unknown key->type %i for key \"%s\" on %s\n", key->type, PRVM_GetString(key->s_name), PRVM_NAME);
1003                 return false;
1004         }
1005         return true;
1006 }
1007
1008 /*
1009 =============
1010 PRVM_GameCommand_f
1011
1012 Console command to send a string to QC function GameCommand of the
1013 indicated progs
1014
1015 Usage:
1016   sv_cmd adminmsg 3 "do not teamkill"
1017   cl_cmd someclientcommand
1018   menu_cmd somemenucommand
1019
1020 All progs can support this extension; sg calls it in server QC, cg in client
1021 QC, mg in menu QC.
1022 =============
1023 */
1024 void PRVM_GameCommand(const char *whichprogs, const char *whichcmd)
1025 {
1026         if(Cmd_Argc() < 1)
1027         {
1028                 Con_Printf("%s text...\n", whichcmd);
1029                 return;
1030         }
1031
1032         PRVM_Begin;
1033         if(!PRVM_SetProgFromString(whichprogs))
1034         // note: this is not PRVM_SetProg because that one aborts "hard" using PRVM_Error
1035         // also, it makes printing error messages easier!
1036         {
1037                 Con_Printf("%s program not loaded.\n", whichprogs);
1038                 return;
1039         }
1040
1041         if(!prog->funcoffsets.GameCommand)
1042         {
1043                 Con_Printf("%s program do not support GameCommand!\n", whichprogs);
1044         }
1045         else
1046         {
1047                 int restorevm_tempstringsbuf_cursize;
1048                 const char *s;
1049
1050                 s = Cmd_Args();
1051
1052                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
1053                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(s ? s : "");
1054                 PRVM_ExecuteProgram (prog->funcoffsets.GameCommand, "QC function GameCommand is missing");
1055                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
1056         }
1057
1058         PRVM_End;
1059 }
1060 void PRVM_GameCommand_Server_f(void)
1061 {
1062         PRVM_GameCommand("server", "sv_cmd");
1063 }
1064 void PRVM_GameCommand_Client_f(void)
1065 {
1066         PRVM_GameCommand("client", "cl_cmd");
1067 }
1068 void PRVM_GameCommand_Menu_f(void)
1069 {
1070         PRVM_GameCommand("menu", "menu_cmd");
1071 }
1072
1073 /*
1074 =============
1075 PRVM_ED_EdictSet_f
1076
1077 Console command to set a field of a specified edict
1078 =============
1079 */
1080 void PRVM_ED_EdictSet_f(void)
1081 {
1082         prvm_edict_t *ed;
1083         ddef_t *key;
1084
1085         if(Cmd_Argc() != 5)
1086         {
1087                 Con_Print("prvm_edictset <program name> <edict number> <field> <value>\n");
1088                 return;
1089         }
1090
1091         PRVM_Begin;
1092         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1093         {
1094                 Con_Printf("Wrong program name %s !\n", Cmd_Argv(1));
1095                 return;
1096         }
1097
1098         ed = PRVM_EDICT_NUM(atoi(Cmd_Argv(2)));
1099
1100         if((key = PRVM_ED_FindField(Cmd_Argv(3))) == 0)
1101                 Con_Printf("Key %s not found !\n", Cmd_Argv(3));
1102         else
1103                 PRVM_ED_ParseEpair(ed, key, Cmd_Argv(4));
1104
1105         PRVM_End;
1106 }
1107
1108 /*
1109 ====================
1110 PRVM_ED_ParseEdict
1111
1112 Parses an edict out of the given string, returning the new position
1113 ed should be a properly initialized empty edict.
1114 Used for initial level load and for savegames.
1115 ====================
1116 */
1117 extern cvar_t developer_entityparsing;
1118 const char *PRVM_ED_ParseEdict (const char *data, prvm_edict_t *ent)
1119 {
1120         ddef_t *key;
1121         qboolean anglehack;
1122         qboolean init;
1123         char keyname[256];
1124         size_t n;
1125
1126         init = false;
1127
1128 // go through all the dictionary pairs
1129         while (1)
1130         {
1131         // parse key
1132                 if (!COM_ParseToken_Simple(&data, false))
1133                         PRVM_ERROR ("PRVM_ED_ParseEdict: EOF without closing brace");
1134                 if (developer_entityparsing.integer)
1135                         Con_Printf("Key: \"%s\"", com_token);
1136                 if (com_token[0] == '}')
1137                         break;
1138
1139                 // anglehack is to allow QuakeEd to write single scalar angles
1140                 // and allow them to be turned into vectors. (FIXME...)
1141                 if (!strcmp(com_token, "angle"))
1142                 {
1143                         strlcpy (com_token, "angles", sizeof(com_token));
1144                         anglehack = true;
1145                 }
1146                 else
1147                         anglehack = false;
1148
1149                 // FIXME: change light to _light to get rid of this hack
1150                 if (!strcmp(com_token, "light"))
1151                         strlcpy (com_token, "light_lev", sizeof(com_token));    // hack for single light def
1152
1153                 strlcpy (keyname, com_token, sizeof(keyname));
1154
1155                 // another hack to fix keynames with trailing spaces
1156                 n = strlen(keyname);
1157                 while (n && keyname[n-1] == ' ')
1158                 {
1159                         keyname[n-1] = 0;
1160                         n--;
1161                 }
1162
1163         // parse value
1164                 if (!COM_ParseToken_Simple(&data, false))
1165                         PRVM_ERROR ("PRVM_ED_ParseEdict: EOF without closing brace");
1166                 if (developer_entityparsing.integer)
1167                         Con_Printf(" \"%s\"\n", com_token);
1168
1169                 if (com_token[0] == '}')
1170                         PRVM_ERROR ("PRVM_ED_ParseEdict: closing brace without data");
1171
1172                 init = true;
1173
1174                 // ignore attempts to set key "" (this problem occurs in nehahra neh1m8.bsp)
1175                 if (!keyname[0])
1176                         continue;
1177
1178 // keynames with a leading underscore are used for utility comments,
1179 // and are immediately discarded by quake
1180                 if (keyname[0] == '_')
1181                         continue;
1182
1183                 key = PRVM_ED_FindField (keyname);
1184                 if (!key)
1185                 {
1186                         Con_DPrintf("%s: '%s' is not a field\n", PRVM_NAME, keyname);
1187                         continue;
1188                 }
1189
1190                 if (anglehack)
1191                 {
1192                         char    temp[32];
1193                         strlcpy (temp, com_token, sizeof(temp));
1194                         sprintf (com_token, "0 %s 0", temp);
1195                 }
1196
1197                 if (!PRVM_ED_ParseEpair(ent, key, com_token))
1198                         PRVM_ERROR ("PRVM_ED_ParseEdict: parse error");
1199         }
1200
1201         if (!init)
1202                 ent->priv.required->free = true;
1203
1204         return data;
1205 }
1206
1207
1208 /*
1209 ================
1210 PRVM_ED_LoadFromFile
1211
1212 The entities are directly placed in the array, rather than allocated with
1213 PRVM_ED_Alloc, because otherwise an error loading the map would have entity
1214 number references out of order.
1215
1216 Creates a server's entity / program execution context by
1217 parsing textual entity definitions out of an ent file.
1218
1219 Used for both fresh maps and savegame loads.  A fresh map would also need
1220 to call PRVM_ED_CallSpawnFunctions () to let the objects initialize themselves.
1221 ================
1222 */
1223 void PRVM_ED_LoadFromFile (const char *data)
1224 {
1225         prvm_edict_t *ent;
1226         int parsed, inhibited, spawned, died;
1227         mfunction_t *func;
1228
1229         parsed = 0;
1230         inhibited = 0;
1231         spawned = 0;
1232         died = 0;
1233
1234
1235 // parse ents
1236         while (1)
1237         {
1238 // parse the opening brace
1239                 if (!COM_ParseToken_Simple(&data, false))
1240                         break;
1241                 if (com_token[0] != '{')
1242                         PRVM_ERROR ("PRVM_ED_LoadFromFile: %s: found %s when expecting {", PRVM_NAME, com_token);
1243
1244                 // CHANGED: this is not conform to PR_LoadFromFile
1245                 if(prog->loadintoworld)
1246                 {
1247                         prog->loadintoworld = false;
1248                         ent = PRVM_EDICT_NUM(0);
1249                 }
1250                 else
1251                         ent = PRVM_ED_Alloc();
1252
1253                 // clear it
1254                 if (ent != prog->edicts)        // hack
1255                         memset (ent->fields.vp, 0, prog->progs->entityfields * 4);
1256
1257                 data = PRVM_ED_ParseEdict (data, ent);
1258                 parsed++;
1259
1260                 // remove the entity ?
1261                 if(prog->load_edict && !prog->load_edict(ent))
1262                 {
1263                         PRVM_ED_Free(ent);
1264                         inhibited++;
1265                         continue;
1266                 }
1267
1268 //
1269 // immediately call spawn function, but only if there is a self global and a classname
1270 //
1271                 if(prog->globaloffsets.self >= 0 && prog->fieldoffsets.classname >= 0)
1272                 {
1273                         string_t handle =  PRVM_EDICTFIELDVALUE(ent, prog->fieldoffsets.classname)->string;
1274                         if (!handle)
1275                         {
1276                                 Con_Print("No classname for:\n");
1277                                 PRVM_ED_Print(ent, NULL);
1278                                 PRVM_ED_Free (ent);
1279                                 continue;
1280                         }
1281
1282                         // look for the spawn function
1283                         func = PRVM_ED_FindFunction (PRVM_GetString(handle));
1284
1285                         if (!func)
1286                         {
1287                                 if (developer.integer) // don't confuse non-developers with errors
1288                                 {
1289                                         Con_Print("No spawn function for:\n");
1290                                         PRVM_ED_Print(ent, NULL);
1291                                 }
1292                                 PRVM_ED_Free (ent);
1293                                 continue;
1294                         }
1295
1296                         // self = ent
1297                         PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict = PRVM_EDICT_TO_PROG(ent);
1298                         PRVM_ExecuteProgram (func - prog->functions, "");
1299                 }
1300
1301                 spawned++;
1302                 if (ent->priv.required->free)
1303                         died++;
1304         }
1305
1306         Con_DPrintf("%s: %i new entities parsed, %i new inhibited, %i (%i new) spawned (whereas %i removed self, %i stayed)\n", PRVM_NAME, parsed, inhibited, prog->num_edicts, spawned, died, spawned - died);
1307 }
1308
1309 void PRVM_FindOffsets(void)
1310 {
1311         // field and global searches use -1 for NULL
1312         memset(&prog->fieldoffsets, -1, sizeof(prog->fieldoffsets));
1313         memset(&prog->globaloffsets, -1, sizeof(prog->globaloffsets));
1314         // functions use 0 for NULL
1315         memset(&prog->funcoffsets, 0, sizeof(prog->funcoffsets));
1316
1317         // server and client qc use a lot of similar fields, so this is combined
1318         prog->fieldoffsets.SendEntity                     = PRVM_ED_FindFieldOffset("SendEntity");
1319         prog->fieldoffsets.Version                        = PRVM_ED_FindFieldOffset("Version");
1320         prog->fieldoffsets.alpha                          = PRVM_ED_FindFieldOffset("alpha");
1321         prog->fieldoffsets.ammo_cells1                    = PRVM_ED_FindFieldOffset("ammo_cells1");
1322         prog->fieldoffsets.ammo_lava_nails                = PRVM_ED_FindFieldOffset("ammo_lava_nails");
1323         prog->fieldoffsets.ammo_multi_rockets             = PRVM_ED_FindFieldOffset("ammo_multi_rockets");
1324         prog->fieldoffsets.ammo_nails1                    = PRVM_ED_FindFieldOffset("ammo_nails1");
1325         prog->fieldoffsets.ammo_plasma                    = PRVM_ED_FindFieldOffset("ammo_plasma");
1326         prog->fieldoffsets.ammo_rockets1                  = PRVM_ED_FindFieldOffset("ammo_rockets1");
1327         prog->fieldoffsets.ammo_shells1                   = PRVM_ED_FindFieldOffset("ammo_shells1");
1328         prog->fieldoffsets.angles                         = PRVM_ED_FindFieldOffset("angles");
1329         prog->fieldoffsets.button3                        = PRVM_ED_FindFieldOffset("button3");
1330         prog->fieldoffsets.button4                        = PRVM_ED_FindFieldOffset("button4");
1331         prog->fieldoffsets.button5                        = PRVM_ED_FindFieldOffset("button5");
1332         prog->fieldoffsets.button6                        = PRVM_ED_FindFieldOffset("button6");
1333         prog->fieldoffsets.button7                        = PRVM_ED_FindFieldOffset("button7");
1334         prog->fieldoffsets.button8                        = PRVM_ED_FindFieldOffset("button8");
1335         prog->fieldoffsets.button9                        = PRVM_ED_FindFieldOffset("button9");
1336         prog->fieldoffsets.button10                       = PRVM_ED_FindFieldOffset("button10");
1337         prog->fieldoffsets.button11                       = PRVM_ED_FindFieldOffset("button11");
1338         prog->fieldoffsets.button12                       = PRVM_ED_FindFieldOffset("button12");
1339         prog->fieldoffsets.button13                       = PRVM_ED_FindFieldOffset("button13");
1340         prog->fieldoffsets.button14                       = PRVM_ED_FindFieldOffset("button14");
1341         prog->fieldoffsets.button15                       = PRVM_ED_FindFieldOffset("button15");
1342         prog->fieldoffsets.button16                       = PRVM_ED_FindFieldOffset("button16");
1343         prog->fieldoffsets.buttonchat                     = PRVM_ED_FindFieldOffset("buttonchat");
1344         prog->fieldoffsets.buttonuse                      = PRVM_ED_FindFieldOffset("buttonuse");
1345         prog->fieldoffsets.chain                          = PRVM_ED_FindFieldOffset("chain");
1346         prog->fieldoffsets.classname                      = PRVM_ED_FindFieldOffset("classname");
1347         prog->fieldoffsets.clientcolors                   = PRVM_ED_FindFieldOffset("clientcolors");
1348         prog->fieldoffsets.color                          = PRVM_ED_FindFieldOffset("color");
1349         prog->fieldoffsets.colormod                       = PRVM_ED_FindFieldOffset("colormod");
1350         prog->fieldoffsets.contentstransition             = PRVM_ED_FindFieldOffset("contentstransition");
1351         prog->fieldoffsets.cursor_active                  = PRVM_ED_FindFieldOffset("cursor_active");
1352         prog->fieldoffsets.cursor_screen                  = PRVM_ED_FindFieldOffset("cursor_screen");
1353         prog->fieldoffsets.cursor_trace_endpos            = PRVM_ED_FindFieldOffset("cursor_trace_endpos");
1354         prog->fieldoffsets.cursor_trace_ent               = PRVM_ED_FindFieldOffset("cursor_trace_ent");
1355         prog->fieldoffsets.cursor_trace_start             = PRVM_ED_FindFieldOffset("cursor_trace_start");
1356         prog->fieldoffsets.customizeentityforclient       = PRVM_ED_FindFieldOffset("customizeentityforclient");
1357         prog->fieldoffsets.dimension_hit                  = PRVM_ED_FindFieldOffset("dimension_hit");
1358         prog->fieldoffsets.dimension_solid                = PRVM_ED_FindFieldOffset("dimension_solid");
1359         prog->fieldoffsets.disableclientprediction        = PRVM_ED_FindFieldOffset("disableclientprediction");
1360         prog->fieldoffsets.dphitcontentsmask              = PRVM_ED_FindFieldOffset("dphitcontentsmask");
1361         prog->fieldoffsets.drawonlytoclient               = PRVM_ED_FindFieldOffset("drawonlytoclient");
1362         prog->fieldoffsets.exteriormodeltoclient          = PRVM_ED_FindFieldOffset("exteriormodeltoclient");
1363         prog->fieldoffsets.fatness                        = PRVM_ED_FindFieldOffset("fatness");
1364         prog->fieldoffsets.forceshader                    = PRVM_ED_FindFieldOffset("forceshader");
1365         prog->fieldoffsets.frame                          = PRVM_ED_FindFieldOffset("frame");
1366         prog->fieldoffsets.frame1time                     = PRVM_ED_FindFieldOffset("frame1time");
1367         prog->fieldoffsets.frame2                         = PRVM_ED_FindFieldOffset("frame2");
1368         prog->fieldoffsets.frame2time                     = PRVM_ED_FindFieldOffset("frame2time");
1369         prog->fieldoffsets.fullbright                     = PRVM_ED_FindFieldOffset("fullbright");
1370         prog->fieldoffsets.glow_color                     = PRVM_ED_FindFieldOffset("glow_color");
1371         prog->fieldoffsets.glow_size                      = PRVM_ED_FindFieldOffset("glow_size");
1372         prog->fieldoffsets.glow_trail                     = PRVM_ED_FindFieldOffset("glow_trail");
1373         prog->fieldoffsets.gravity                        = PRVM_ED_FindFieldOffset("gravity");
1374         prog->fieldoffsets.groundentity                   = PRVM_ED_FindFieldOffset("groundentity");
1375         prog->fieldoffsets.hull                           = PRVM_ED_FindFieldOffset("hull");
1376         prog->fieldoffsets.ideal_yaw                      = PRVM_ED_FindFieldOffset("ideal_yaw");
1377         prog->fieldoffsets.idealpitch                     = PRVM_ED_FindFieldOffset("idealpitch");
1378         prog->fieldoffsets.items2                         = PRVM_ED_FindFieldOffset("items2");
1379         prog->fieldoffsets.lerpfrac                       = PRVM_ED_FindFieldOffset("lerpfrac");
1380         prog->fieldoffsets.light_lev                      = PRVM_ED_FindFieldOffset("light_lev");
1381         prog->fieldoffsets.message                        = PRVM_ED_FindFieldOffset("message");
1382         prog->fieldoffsets.modelflags                     = PRVM_ED_FindFieldOffset("modelflags");
1383         prog->fieldoffsets.movement                       = PRVM_ED_FindFieldOffset("movement");
1384         prog->fieldoffsets.netaddress                     = PRVM_ED_FindFieldOffset("netaddress");
1385         prog->fieldoffsets.nextthink                      = PRVM_ED_FindFieldOffset("nextthink");
1386         prog->fieldoffsets.nodrawtoclient                 = PRVM_ED_FindFieldOffset("nodrawtoclient");
1387         prog->fieldoffsets.pflags                         = PRVM_ED_FindFieldOffset("pflags");
1388         prog->fieldoffsets.ping                           = PRVM_ED_FindFieldOffset("ping");
1389         prog->fieldoffsets.pitch_speed                    = PRVM_ED_FindFieldOffset("pitch_speed");
1390         prog->fieldoffsets.playermodel                    = PRVM_ED_FindFieldOffset("playermodel");
1391         prog->fieldoffsets.playerskin                     = PRVM_ED_FindFieldOffset("playerskin");
1392         prog->fieldoffsets.pmodel                         = PRVM_ED_FindFieldOffset("pmodel");
1393         prog->fieldoffsets.punchvector                    = PRVM_ED_FindFieldOffset("punchvector");
1394         prog->fieldoffsets.renderamt                      = PRVM_ED_FindFieldOffset("renderamt"); // HalfLife support
1395         prog->fieldoffsets.renderflags                    = PRVM_ED_FindFieldOffset("renderflags");
1396         prog->fieldoffsets.rendermode                     = PRVM_ED_FindFieldOffset("rendermode"); // HalfLife support
1397         prog->fieldoffsets.scale                          = PRVM_ED_FindFieldOffset("scale");
1398         prog->fieldoffsets.style                          = PRVM_ED_FindFieldOffset("style");
1399         prog->fieldoffsets.tag_entity                     = PRVM_ED_FindFieldOffset("tag_entity");
1400         prog->fieldoffsets.tag_index                      = PRVM_ED_FindFieldOffset("tag_index");
1401         prog->fieldoffsets.think                          = PRVM_ED_FindFieldOffset("think");
1402         prog->fieldoffsets.viewmodelforclient             = PRVM_ED_FindFieldOffset("viewmodelforclient");
1403         prog->fieldoffsets.viewzoom                       = PRVM_ED_FindFieldOffset("viewzoom");
1404         prog->fieldoffsets.yaw_speed                      = PRVM_ED_FindFieldOffset("yaw_speed");
1405         prog->funcoffsets.CSQC_ConsoleCommand             = PRVM_ED_FindFunctionOffset("CSQC_ConsoleCommand");
1406         prog->funcoffsets.CSQC_Ent_Remove                 = PRVM_ED_FindFunctionOffset("CSQC_Ent_Remove");
1407         prog->funcoffsets.CSQC_Ent_Update                 = PRVM_ED_FindFunctionOffset("CSQC_Ent_Update");
1408         prog->funcoffsets.CSQC_Event                      = PRVM_ED_FindFunctionOffset("CSQC_Event");
1409         prog->funcoffsets.CSQC_Init                       = PRVM_ED_FindFunctionOffset("CSQC_Init");
1410         prog->funcoffsets.CSQC_InputEvent                 = PRVM_ED_FindFunctionOffset("CSQC_InputEvent");
1411         prog->funcoffsets.CSQC_Parse_CenterPrint          = PRVM_ED_FindFunctionOffset("CSQC_Parse_CenterPrint");
1412         prog->funcoffsets.CSQC_Parse_Print                = PRVM_ED_FindFunctionOffset("CSQC_Parse_Print");
1413         prog->funcoffsets.CSQC_Parse_StuffCmd             = PRVM_ED_FindFunctionOffset("CSQC_Parse_StuffCmd");
1414         prog->funcoffsets.CSQC_Parse_TempEntity           = PRVM_ED_FindFunctionOffset("CSQC_Parse_TempEntity");
1415         prog->funcoffsets.CSQC_Shutdown                   = PRVM_ED_FindFunctionOffset("CSQC_Shutdown");
1416         prog->funcoffsets.CSQC_UpdateView                 = PRVM_ED_FindFunctionOffset("CSQC_UpdateView");
1417         prog->funcoffsets.EndFrame                        = PRVM_ED_FindFunctionOffset("EndFrame");
1418         prog->funcoffsets.RestoreGame                     = PRVM_ED_FindFunctionOffset("RestoreGame");
1419         prog->funcoffsets.SV_ChangeTeam                   = PRVM_ED_FindFunctionOffset("SV_ChangeTeam");
1420         prog->funcoffsets.SV_ParseClientCommand           = PRVM_ED_FindFunctionOffset("SV_ParseClientCommand");
1421         prog->funcoffsets.SV_PlayerPhysics                = PRVM_ED_FindFunctionOffset("SV_PlayerPhysics");
1422         prog->funcoffsets.GameCommand                     = PRVM_ED_FindFunctionOffset("GameCommand");
1423         prog->globaloffsets.SV_InitCmd                    = PRVM_ED_FindGlobalOffset("SV_InitCmd");
1424         prog->globaloffsets.self                          = PRVM_ED_FindGlobalOffset("self");
1425         prog->globaloffsets.time                          = PRVM_ED_FindGlobalOffset("time");
1426         prog->globaloffsets.v_forward                     = PRVM_ED_FindGlobalOffset("v_forward");
1427         prog->globaloffsets.v_right                       = PRVM_ED_FindGlobalOffset("v_right");
1428         prog->globaloffsets.v_up                          = PRVM_ED_FindGlobalOffset("v_up");
1429         prog->globaloffsets.view_angles                   = PRVM_ED_FindGlobalOffset("view_angles");
1430         prog->globaloffsets.trace_allsolid                = PRVM_ED_FindGlobalOffset("trace_allsolid");
1431         prog->globaloffsets.trace_startsolid              = PRVM_ED_FindGlobalOffset("trace_startsolid");
1432         prog->globaloffsets.trace_fraction                = PRVM_ED_FindGlobalOffset("trace_fraction");
1433         prog->globaloffsets.trace_inwater                 = PRVM_ED_FindGlobalOffset("trace_inwater");
1434         prog->globaloffsets.trace_inopen                  = PRVM_ED_FindGlobalOffset("trace_inopen");
1435         prog->globaloffsets.trace_endpos                  = PRVM_ED_FindGlobalOffset("trace_endpos");
1436         prog->globaloffsets.trace_plane_normal            = PRVM_ED_FindGlobalOffset("trace_plane_normal");
1437         prog->globaloffsets.trace_plane_dist              = PRVM_ED_FindGlobalOffset("trace_plane_dist");
1438         prog->globaloffsets.trace_ent                     = PRVM_ED_FindGlobalOffset("trace_ent");
1439         prog->globaloffsets.trace_dphitcontents           = PRVM_ED_FindGlobalOffset("trace_dphitcontents");
1440         prog->globaloffsets.trace_dphitq3surfaceflags     = PRVM_ED_FindGlobalOffset("trace_dphitq3surfaceflags");
1441         prog->globaloffsets.trace_dphittexturename        = PRVM_ED_FindGlobalOffset("trace_dphittexturename");
1442         prog->globaloffsets.trace_dpstartcontents         = PRVM_ED_FindGlobalOffset("trace_dpstartcontents");
1443
1444         // menu qc only uses some functions, nothing else
1445         prog->funcoffsets.m_display                       = PRVM_ED_FindFunctionOffset("m_display");
1446         prog->funcoffsets.m_draw                          = PRVM_ED_FindFunctionOffset("m_draw");
1447         prog->funcoffsets.m_hide                          = PRVM_ED_FindFunctionOffset("m_hide");
1448         prog->funcoffsets.m_init                          = PRVM_ED_FindFunctionOffset("m_init");
1449         prog->funcoffsets.m_keydown                       = PRVM_ED_FindFunctionOffset("m_keydown");
1450         prog->funcoffsets.m_keyup                         = PRVM_ED_FindFunctionOffset("m_keyup");
1451         prog->funcoffsets.m_shutdown                      = PRVM_ED_FindFunctionOffset("m_shutdown");
1452         prog->funcoffsets.m_toggle                        = PRVM_ED_FindFunctionOffset("m_toggle");
1453 }
1454
1455 // not used
1456 /*
1457 typedef struct dpfield_s
1458 {
1459         int type;
1460         char *string;
1461 }
1462 dpfield_t;
1463
1464 #define DPFIELDS (sizeof(dpfields) / sizeof(dpfield_t))
1465
1466 dpfield_t dpfields[] =
1467 {
1468 };
1469 */
1470
1471 /*
1472 ===============
1473 PRVM_ResetProg
1474 ===============
1475 */
1476
1477 void PRVM_ResetProg()
1478 {
1479         PRVM_GCALL(reset_cmd)();
1480         Mem_FreePool(&prog->progs_mempool);
1481         memset(prog,0,sizeof(prvm_prog_t));
1482 }
1483
1484 /*
1485 ===============
1486 PRVM_LoadLNO
1487 ===============
1488 */
1489 void PRVM_LoadLNO( const char *progname ) {
1490         fs_offset_t filesize;
1491         unsigned char *lno;
1492         unsigned int *header;
1493         char filename[512];
1494
1495         FS_StripExtension( progname, filename, sizeof( filename ) );
1496         strlcat( filename, ".lno", sizeof( filename ) );
1497
1498         lno = FS_LoadFile( filename, tempmempool, false, &filesize );
1499         if( !lno ) {
1500                 return;
1501         }
1502
1503 /*
1504 <Spike>    SafeWrite (h, &lnotype, sizeof(int));
1505 <Spike>    SafeWrite (h, &version, sizeof(int));
1506 <Spike>    SafeWrite (h, &numglobaldefs, sizeof(int));
1507 <Spike>    SafeWrite (h, &numpr_globals, sizeof(int));
1508 <Spike>    SafeWrite (h, &numfielddefs, sizeof(int));
1509 <Spike>    SafeWrite (h, &numstatements, sizeof(int));
1510 <Spike>    SafeWrite (h, statement_linenums, numstatements*sizeof(int));
1511 */
1512         if( (unsigned) filesize < (6 + prog->progs->numstatements) * sizeof( int ) ) {
1513                 Mem_Free(lno);
1514                 return;
1515         }
1516
1517         header = (unsigned int *) lno;
1518         if( header[ 0 ] == *(unsigned int *) "LNOF" &&
1519                 LittleLong( header[ 1 ] ) == 1 &&
1520                 (unsigned int)LittleLong( header[ 2 ] ) == (unsigned int)prog->progs->numglobaldefs &&
1521                 (unsigned int)LittleLong( header[ 3 ] ) == (unsigned int)prog->progs->numglobals &&
1522                 (unsigned int)LittleLong( header[ 4 ] ) == (unsigned int)prog->progs->numfielddefs &&
1523                 (unsigned int)LittleLong( header[ 5 ] ) == (unsigned int)prog->progs->numstatements )
1524         {
1525                 prog->statement_linenums = (int *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof( int ) );
1526                 memcpy( prog->statement_linenums, (int *) lno + 6, prog->progs->numstatements * sizeof( int ) );
1527         }
1528         Mem_Free( lno );
1529 }
1530
1531 /*
1532 ===============
1533 PRVM_LoadProgs
1534 ===============
1535 */
1536 void PRVM_LoadProgs (const char * filename, int numrequiredfunc, char **required_func, int numrequiredfields, prvm_required_field_t *required_field, int numrequiredglobals, char **required_global)
1537 {
1538         int i;
1539         dstatement_t *st;
1540         ddef_t *infielddefs;
1541         dfunction_t *dfunctions;
1542         fs_offset_t filesize;
1543
1544         if( prog->loaded ) {
1545                 PRVM_ERROR ("PRVM_LoadProgs: there is already a %s program loaded!", PRVM_NAME );
1546         }
1547
1548         prog->progs = (dprograms_t *)FS_LoadFile (filename, prog->progs_mempool, false, &filesize);
1549         if (prog->progs == NULL || filesize < (fs_offset_t)sizeof(dprograms_t))
1550                 PRVM_ERROR ("PRVM_LoadProgs: couldn't load %s for %s", filename, PRVM_NAME);
1551
1552         Con_DPrintf("%s programs occupy %iK.\n", PRVM_NAME, (int)(filesize/1024));
1553
1554         prog->filecrc = CRC_Block((unsigned char *)prog->progs, filesize);
1555
1556 // byte swap the header
1557         for (i = 0;i < (int) sizeof(*prog->progs) / 4;i++)
1558                 ((int *)prog->progs)[i] = LittleLong ( ((int *)prog->progs)[i] );
1559
1560         if (prog->progs->version != PROG_VERSION)
1561                 PRVM_ERROR ("%s: %s has wrong version number (%i should be %i)", PRVM_NAME, filename, prog->progs->version, PROG_VERSION);
1562         if (prog->progs->crc != prog->headercrc)
1563                 PRVM_ERROR ("%s: %s system vars have been modified, progdefs.h is out of date", PRVM_NAME, filename);
1564
1565         //prog->functions = (dfunction_t *)((unsigned char *)progs + progs->ofs_functions);
1566         dfunctions = (dfunction_t *)((unsigned char *)prog->progs + prog->progs->ofs_functions);
1567
1568         prog->strings = (char *)prog->progs + prog->progs->ofs_strings;
1569         prog->stringssize = 0;
1570         for (i = 0;i < prog->progs->numstrings;i++)
1571         {
1572                 if (prog->progs->ofs_strings + prog->stringssize >= (int)filesize)
1573                         PRVM_ERROR ("%s: %s strings go past end of file", PRVM_NAME, filename);
1574                 prog->stringssize += (int)strlen (prog->strings + prog->stringssize) + 1;
1575         }
1576         prog->numknownstrings = 0;
1577         prog->maxknownstrings = 0;
1578         prog->knownstrings = NULL;
1579         prog->knownstrings_freeable = NULL;
1580
1581         prog->globaldefs = (ddef_t *)((unsigned char *)prog->progs + prog->progs->ofs_globaldefs);
1582
1583         // we need to expand the fielddefs list to include all the engine fields,
1584         // so allocate a new place for it
1585         infielddefs = (ddef_t *)((unsigned char *)prog->progs + prog->progs->ofs_fielddefs);
1586         //                                                                                              ( + DPFIELDS                       )
1587         prog->fielddefs = (ddef_t *)Mem_Alloc(prog->progs_mempool, (prog->progs->numfielddefs + numrequiredfields) * sizeof(ddef_t));
1588
1589         prog->statements = (dstatement_t *)((unsigned char *)prog->progs + prog->progs->ofs_statements);
1590
1591         prog->statement_profile = (double *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof(*prog->statement_profile));
1592
1593         // moved edict_size calculation down below field adding code
1594
1595         //pr_global_struct = (globalvars_t *)((unsigned char *)progs + progs->ofs_globals);
1596         prog->globals.generic = (float *)((unsigned char *)prog->progs + prog->progs->ofs_globals);
1597
1598 // byte swap the lumps
1599         for (i=0 ; i<prog->progs->numstatements ; i++)
1600         {
1601                 prog->statements[i].op = LittleShort(prog->statements[i].op);
1602                 prog->statements[i].a = LittleShort(prog->statements[i].a);
1603                 prog->statements[i].b = LittleShort(prog->statements[i].b);
1604                 prog->statements[i].c = LittleShort(prog->statements[i].c);
1605         }
1606
1607         prog->functions = (mfunction_t *)Mem_Alloc(prog->progs_mempool, sizeof(mfunction_t) * prog->progs->numfunctions);
1608         for (i = 0;i < prog->progs->numfunctions;i++)
1609         {
1610                 prog->functions[i].first_statement = LittleLong (dfunctions[i].first_statement);
1611                 prog->functions[i].parm_start = LittleLong (dfunctions[i].parm_start);
1612                 prog->functions[i].s_name = LittleLong (dfunctions[i].s_name);
1613                 prog->functions[i].s_file = LittleLong (dfunctions[i].s_file);
1614                 prog->functions[i].numparms = LittleLong (dfunctions[i].numparms);
1615                 prog->functions[i].locals = LittleLong (dfunctions[i].locals);
1616                 memcpy(prog->functions[i].parm_size, dfunctions[i].parm_size, sizeof(dfunctions[i].parm_size));
1617         }
1618
1619         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
1620         {
1621                 prog->globaldefs[i].type = LittleShort (prog->globaldefs[i].type);
1622                 prog->globaldefs[i].ofs = LittleShort (prog->globaldefs[i].ofs);
1623                 prog->globaldefs[i].s_name = LittleLong (prog->globaldefs[i].s_name);
1624         }
1625
1626         // copy the progs fields to the new fields list
1627         for (i = 0;i < prog->progs->numfielddefs;i++)
1628         {
1629                 prog->fielddefs[i].type = LittleShort (infielddefs[i].type);
1630                 if (prog->fielddefs[i].type & DEF_SAVEGLOBAL)
1631                         PRVM_ERROR ("PRVM_LoadProgs: prog->fielddefs[i].type & DEF_SAVEGLOBAL in %s", PRVM_NAME);
1632                 prog->fielddefs[i].ofs = LittleShort (infielddefs[i].ofs);
1633                 prog->fielddefs[i].s_name = LittleLong (infielddefs[i].s_name);
1634         }
1635
1636         // append the required fields
1637         for (i = 0;i < (int) numrequiredfields;i++)
1638         {
1639                 prog->fielddefs[prog->progs->numfielddefs].type = required_field[i].type;
1640                 prog->fielddefs[prog->progs->numfielddefs].ofs = prog->progs->entityfields;
1641                 prog->fielddefs[prog->progs->numfielddefs].s_name = PRVM_SetEngineString(required_field[i].name);
1642                 if (prog->fielddefs[prog->progs->numfielddefs].type == ev_vector)
1643                         prog->progs->entityfields += 3;
1644                 else
1645                         prog->progs->entityfields++;
1646                 prog->progs->numfielddefs++;
1647         }
1648
1649         // check required functions
1650         for(i=0 ; i < numrequiredfunc ; i++)
1651                 if(PRVM_ED_FindFunction(required_func[i]) == 0)
1652                         PRVM_ERROR("%s: %s not found in %s",PRVM_NAME, required_func[i], filename);
1653
1654         // check required globals
1655         for(i=0 ; i < numrequiredglobals ; i++)
1656                 if(PRVM_ED_FindGlobal(required_global[i]) == 0)
1657                         PRVM_ERROR("%s: %s not found in %s",PRVM_NAME, required_global[i], filename);
1658
1659         for (i=0 ; i<prog->progs->numglobals ; i++)
1660                 ((int *)prog->globals.generic)[i] = LittleLong (((int *)prog->globals.generic)[i]);
1661
1662         // moved edict_size calculation down here, below field adding code
1663         // LordHavoc: this no longer includes the prvm_edict_t header
1664         prog->edict_size = prog->progs->entityfields * 4;
1665         prog->edictareasize = prog->edict_size * prog->limit_edicts;
1666
1667         // LordHavoc: bounds check anything static
1668         for (i = 0,st = prog->statements;i < prog->progs->numstatements;i++,st++)
1669         {
1670                 switch (st->op)
1671                 {
1672                 case OP_IF:
1673                 case OP_IFNOT:
1674                         if ((unsigned short) st->a >= prog->progs->numglobals || st->b + i < 0 || st->b + i >= prog->progs->numstatements)
1675                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds IF/IFNOT (statement %d) in %s", i, PRVM_NAME);
1676                         break;
1677                 case OP_GOTO:
1678                         if (st->a + i < 0 || st->a + i >= prog->progs->numstatements)
1679                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds GOTO (statement %d) in %s", i, PRVM_NAME);
1680                         break;
1681                 // global global global
1682                 case OP_ADD_F:
1683                 case OP_ADD_V:
1684                 case OP_SUB_F:
1685                 case OP_SUB_V:
1686                 case OP_MUL_F:
1687                 case OP_MUL_V:
1688                 case OP_MUL_FV:
1689                 case OP_MUL_VF:
1690                 case OP_DIV_F:
1691                 case OP_BITAND:
1692                 case OP_BITOR:
1693                 case OP_GE:
1694                 case OP_LE:
1695                 case OP_GT:
1696                 case OP_LT:
1697                 case OP_AND:
1698                 case OP_OR:
1699                 case OP_EQ_F:
1700                 case OP_EQ_V:
1701                 case OP_EQ_S:
1702                 case OP_EQ_E:
1703                 case OP_EQ_FNC:
1704                 case OP_NE_F:
1705                 case OP_NE_V:
1706                 case OP_NE_S:
1707                 case OP_NE_E:
1708                 case OP_NE_FNC:
1709                 case OP_ADDRESS:
1710                 case OP_LOAD_F:
1711                 case OP_LOAD_FLD:
1712                 case OP_LOAD_ENT:
1713                 case OP_LOAD_S:
1714                 case OP_LOAD_FNC:
1715                 case OP_LOAD_V:
1716                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1717                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d)", i);
1718                         break;
1719                 // global none global
1720                 case OP_NOT_F:
1721                 case OP_NOT_V:
1722                 case OP_NOT_S:
1723                 case OP_NOT_FNC:
1724                 case OP_NOT_ENT:
1725                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1726                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1727                         break;
1728                 // 2 globals
1729                 case OP_STOREP_F:
1730                 case OP_STOREP_ENT:
1731                 case OP_STOREP_FLD:
1732                 case OP_STOREP_S:
1733                 case OP_STOREP_FNC:
1734                 case OP_STORE_F:
1735                 case OP_STORE_ENT:
1736                 case OP_STORE_FLD:
1737                 case OP_STORE_S:
1738                 case OP_STORE_FNC:
1739                 case OP_STATE:
1740                 case OP_STOREP_V:
1741                 case OP_STORE_V:
1742                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals)
1743                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1744                         break;
1745                 // 1 global
1746                 case OP_CALL0:
1747                 case OP_CALL1:
1748                 case OP_CALL2:
1749                 case OP_CALL3:
1750                 case OP_CALL4:
1751                 case OP_CALL5:
1752                 case OP_CALL6:
1753                 case OP_CALL7:
1754                 case OP_CALL8:
1755                 case OP_DONE:
1756                 case OP_RETURN:
1757                         if ((unsigned short) st->a >= prog->progs->numglobals)
1758                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1759                         break;
1760                 default:
1761                         Con_DPrintf("PRVM_LoadProgs: unknown opcode %d at statement %d in %s\n", st->op, i, PRVM_NAME);
1762                         break;
1763                 }
1764         }
1765
1766         PRVM_LoadLNO(filename);
1767
1768         PRVM_Init_Exec();
1769
1770         prog->loaded = TRUE;
1771
1772         // set flags & ddef_ts in prog
1773
1774         prog->flag = 0;
1775
1776         PRVM_FindOffsets();
1777
1778         PRVM_GCALL(init_cmd)();
1779
1780         // init mempools
1781         PRVM_MEM_Alloc();
1782 }
1783
1784
1785 void PRVM_Fields_f (void)
1786 {
1787         int i, j, ednum, used, usedamount;
1788         int *counts;
1789         char tempstring[MAX_INPUTLINE], tempstring2[260];
1790         const char *name;
1791         prvm_edict_t *ed;
1792         ddef_t *d;
1793         int *v;
1794
1795         // TODO
1796         /*
1797         if (!sv.active)
1798         {
1799                 Con_Print("no progs loaded\n");
1800                 return;
1801         }
1802         */
1803
1804         if(Cmd_Argc() != 2)
1805         {
1806                 Con_Print("prvm_fields <program name>\n");
1807                 return;
1808         }
1809
1810         PRVM_Begin;
1811         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1812                 return;
1813
1814         counts = (int *)Mem_Alloc(tempmempool, prog->progs->numfielddefs * sizeof(int));
1815         for (ednum = 0;ednum < prog->max_edicts;ednum++)
1816         {
1817                 ed = PRVM_EDICT_NUM(ednum);
1818                 if (ed->priv.required->free)
1819                         continue;
1820                 for (i = 1;i < prog->progs->numfielddefs;i++)
1821                 {
1822                         d = &prog->fielddefs[i];
1823                         name = PRVM_GetString(d->s_name);
1824                         if (name[strlen(name)-2] == '_')
1825                                 continue;       // skip _x, _y, _z vars
1826                         v = (int *)((char *)ed->fields.vp + d->ofs*4);
1827                         // if the value is still all 0, skip the field
1828                         for (j = 0;j < prvm_type_size[d->type & ~DEF_SAVEGLOBAL];j++)
1829                         {
1830                                 if (v[j])
1831                                 {
1832                                         counts[i]++;
1833                                         break;
1834                                 }
1835                         }
1836                 }
1837         }
1838         used = 0;
1839         usedamount = 0;
1840         tempstring[0] = 0;
1841         for (i = 0;i < prog->progs->numfielddefs;i++)
1842         {
1843                 d = &prog->fielddefs[i];
1844                 name = PRVM_GetString(d->s_name);
1845                 if (name[strlen(name)-2] == '_')
1846                         continue;       // skip _x, _y, _z vars
1847                 switch(d->type & ~DEF_SAVEGLOBAL)
1848                 {
1849                 case ev_string:
1850                         strlcat(tempstring, "string   ", sizeof(tempstring));
1851                         break;
1852                 case ev_entity:
1853                         strlcat(tempstring, "entity   ", sizeof(tempstring));
1854                         break;
1855                 case ev_function:
1856                         strlcat(tempstring, "function ", sizeof(tempstring));
1857                         break;
1858                 case ev_field:
1859                         strlcat(tempstring, "field    ", sizeof(tempstring));
1860                         break;
1861                 case ev_void:
1862                         strlcat(tempstring, "void     ", sizeof(tempstring));
1863                         break;
1864                 case ev_float:
1865                         strlcat(tempstring, "float    ", sizeof(tempstring));
1866                         break;
1867                 case ev_vector:
1868                         strlcat(tempstring, "vector   ", sizeof(tempstring));
1869                         break;
1870                 case ev_pointer:
1871                         strlcat(tempstring, "pointer  ", sizeof(tempstring));
1872                         break;
1873                 default:
1874                         sprintf (tempstring2, "bad type %i ", d->type & ~DEF_SAVEGLOBAL);
1875                         strlcat(tempstring, tempstring2, sizeof(tempstring));
1876                         break;
1877                 }
1878                 if (strlen(name) > sizeof(tempstring2)-4)
1879                 {
1880                         memcpy (tempstring2, name, sizeof(tempstring2)-4);
1881                         tempstring2[sizeof(tempstring2)-4] = tempstring2[sizeof(tempstring2)-3] = tempstring2[sizeof(tempstring2)-2] = '.';
1882                         tempstring2[sizeof(tempstring2)-1] = 0;
1883                         name = tempstring2;
1884                 }
1885                 strlcat(tempstring, name, sizeof(tempstring));
1886                 for (j = (int)strlen(name);j < 25;j++)
1887                         strlcat(tempstring, " ", sizeof(tempstring));
1888                 sprintf(tempstring2, "%5d", counts[i]);
1889                 strlcat(tempstring, tempstring2, sizeof(tempstring));
1890                 strlcat(tempstring, "\n", sizeof(tempstring));
1891                 if (strlen(tempstring) >= sizeof(tempstring)/2)
1892                 {
1893                         Con_Print(tempstring);
1894                         tempstring[0] = 0;
1895                 }
1896                 if (counts[i])
1897                 {
1898                         used++;
1899                         usedamount += prvm_type_size[d->type & ~DEF_SAVEGLOBAL];
1900                 }
1901         }
1902         Mem_Free(counts);
1903         Con_Printf("%s: %i entity fields (%i in use), totalling %i bytes per edict (%i in use), %i edicts allocated, %i bytes total spent on edict fields (%i needed)\n", PRVM_NAME, prog->progs->entityfields, used, prog->progs->entityfields * 4, usedamount * 4, prog->max_edicts, prog->progs->entityfields * 4 * prog->max_edicts, usedamount * 4 * prog->max_edicts);
1904
1905         PRVM_End;
1906 }
1907
1908 void PRVM_Globals_f (void)
1909 {
1910         int i;
1911         const char *wildcard;
1912         int numculled;
1913                 numculled = 0;
1914         // TODO
1915         /*if (!sv.active)
1916         {
1917                 Con_Print("no progs loaded\n");
1918                 return;
1919         }*/
1920         if(Cmd_Argc () < 2 || Cmd_Argc() > 3)
1921         {
1922                 Con_Print("prvm_globals <program name> <optional name wildcard>\n");
1923                 return;
1924         }
1925
1926         PRVM_Begin;
1927         if(!PRVM_SetProgFromString (Cmd_Argv (1)))
1928                 return;
1929
1930         if( Cmd_Argc() == 3)
1931                 wildcard = Cmd_Argv(2);
1932         else
1933                 wildcard = NULL;
1934
1935         Con_Printf("%s :", PRVM_NAME);
1936
1937         for (i = 0;i < prog->progs->numglobaldefs;i++)
1938         {
1939                 if(wildcard)
1940                         if( !matchpattern( PRVM_GetString(prog->globaldefs[i].s_name), wildcard, 1) )
1941                         {
1942                                 numculled++;
1943                                 continue;
1944                         }
1945                 Con_Printf("%s\n", PRVM_GetString(prog->globaldefs[i].s_name));
1946         }
1947         Con_Printf("%i global variables, %i culled, totalling %i bytes\n", prog->progs->numglobals, numculled, prog->progs->numglobals * 4);
1948
1949         PRVM_End;
1950 }
1951
1952 /*
1953 ===============
1954 PRVM_Global
1955 ===============
1956 */
1957 void PRVM_Global_f(void)
1958 {
1959         ddef_t *global;
1960         if( Cmd_Argc() != 3 ) {
1961                 Con_Printf( "prvm_global <program name> <global name>\n" );
1962                 return;
1963         }
1964
1965         PRVM_Begin;
1966         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1967                 return;
1968
1969         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
1970         if( !global )
1971                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
1972         else
1973                 Con_Printf( "%s: %s\n", Cmd_Argv(2), PRVM_ValueString( (etype_t)global->type, (prvm_eval_t *) &prog->globals.generic[ global->ofs ] ) );
1974         PRVM_End;
1975 }
1976
1977 /*
1978 ===============
1979 PRVM_GlobalSet
1980 ===============
1981 */
1982 void PRVM_GlobalSet_f(void)
1983 {
1984         ddef_t *global;
1985         if( Cmd_Argc() != 4 ) {
1986                 Con_Printf( "prvm_globalset <program name> <global name> <value>\n" );
1987                 return;
1988         }
1989
1990         PRVM_Begin;
1991         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1992                 return;
1993
1994         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
1995         if( !global )
1996                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
1997         else
1998                 PRVM_ED_ParseEpair( NULL, global, Cmd_Argv(3) );
1999         PRVM_End;
2000 }
2001
2002 /*
2003 ===============
2004 PRVM_Init
2005 ===============
2006 */
2007 void PRVM_Init (void)
2008 {
2009         Cmd_AddCommand ("prvm_edict", PRVM_ED_PrintEdict_f, "print all data about an entity number in the selected VM (server, client, menu)");
2010         Cmd_AddCommand ("prvm_edicts", PRVM_ED_PrintEdicts_f, "prints all data about all entities in the selected VM (server, client, menu)");
2011         Cmd_AddCommand ("prvm_edictcount", PRVM_ED_Count_f, "prints number of active entities in the selected VM (server, client, menu)");
2012         Cmd_AddCommand ("prvm_profile", PRVM_Profile_f, "prints execution statistics about the most used QuakeC functions in the selected VM (server, client, menu)");
2013         Cmd_AddCommand ("prvm_fields", PRVM_Fields_f, "prints usage statistics on properties (how many entities have non-zero values) in the selected VM (server, client, menu)");
2014         Cmd_AddCommand ("prvm_globals", PRVM_Globals_f, "prints all global variables in the selected VM (server, client, menu)");
2015         Cmd_AddCommand ("prvm_global", PRVM_Global_f, "prints value of a specified global variable in the selected VM (server, client, menu)");
2016         Cmd_AddCommand ("prvm_globalset", PRVM_GlobalSet_f, "sets value of a specified global variable in the selected VM (server, client, menu)");
2017         Cmd_AddCommand ("prvm_edictset", PRVM_ED_EdictSet_f, "changes value of a specified property of a specified entity in the selected VM (server, client, menu)");
2018         Cmd_AddCommand ("prvm_printfunction", PRVM_PrintFunction_f, "prints a disassembly (QuakeC instructions) of the specified function in the selected VM (server, client, menu)");
2019         Cmd_AddCommand ("cl_cmd", PRVM_GameCommand_Client_f, "calls the client QC function GameCommand with the supplied string as argument");
2020         Cmd_AddCommand ("menu_cmd", PRVM_GameCommand_Menu_f, "calls the menu QC function GameCommand with the supplied string as argument");
2021         Cmd_AddCommand ("sv_cmd", PRVM_GameCommand_Server_f, "calls the server QC function GameCommand with the supplied string as argument");
2022         // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
2023         Cvar_RegisterVariable (&prvm_boundscheck);
2024         Cvar_RegisterVariable (&prvm_traceqc);
2025         Cvar_RegisterVariable (&prvm_statementprofiling);
2026
2027         //VM_Cmd_Init();
2028 }
2029
2030 /*
2031 ===============
2032 PRVM_InitProg
2033 ===============
2034 */
2035 void PRVM_InitProg(int prognr)
2036 {
2037         if(prognr < 0 || prognr >= PRVM_MAXPROGS)
2038                 Sys_Error("PRVM_InitProg: Invalid program number %i",prognr);
2039
2040         prog = &prog_list[prognr];
2041
2042         if(prog->loaded)
2043                 PRVM_ResetProg();
2044
2045         memset(prog, 0, sizeof(prvm_prog_t));
2046
2047         prog->error_cmd = Host_Error;
2048 }
2049
2050 int PRVM_GetProgNr()
2051 {
2052         return prog - prog_list;
2053 }
2054
2055 void *_PRVM_Alloc(size_t buffersize, const char *filename, int fileline)
2056 {
2057         return _Mem_Alloc(prog->progs_mempool, buffersize, filename, fileline);
2058 }
2059
2060 void _PRVM_Free(void *buffer, const char *filename, int fileline)
2061 {
2062         _Mem_Free(buffer, filename, fileline);
2063 }
2064
2065 void _PRVM_FreeAll(const char *filename, int fileline)
2066 {
2067         prog->progs = NULL;
2068         prog->fielddefs = NULL;
2069         prog->functions = NULL;
2070         _Mem_EmptyPool(prog->progs_mempool, filename, fileline);
2071 }
2072
2073 // LordHavoc: turned PRVM_EDICT_NUM into a #define for speed reasons
2074 prvm_edict_t *PRVM_EDICT_NUM_ERROR(int n, char *filename, int fileline)
2075 {
2076         PRVM_ERROR ("PRVM_EDICT_NUM: %s: bad number %i (called at %s:%i)", PRVM_NAME, n, filename, fileline);
2077         return NULL;
2078 }
2079
2080 /*
2081 int NUM_FOR_EDICT_ERROR(prvm_edict_t *e)
2082 {
2083         PRVM_ERROR ("PRVM_NUM_FOR_EDICT: bad pointer %p (world is %p, entity number would be %i)", e, prog->edicts, e - prog->edicts);
2084         return 0;
2085 }
2086
2087 int PRVM_NUM_FOR_EDICT(prvm_edict_t *e)
2088 {
2089         int n;
2090         n = e - prog->edicts;
2091         if ((unsigned int)n >= prog->limit_edicts)
2092                 Host_Error ("PRVM_NUM_FOR_EDICT: bad pointer");
2093         return n;
2094 }
2095
2096 //int NoCrash_NUM_FOR_EDICT(prvm_edict_t *e)
2097 //{
2098 //      return e - prog->edicts;
2099 //}
2100
2101 //#define       PRVM_EDICT_TO_PROG(e) ((unsigned char *)(((prvm_edict_t *)e)->v) - (unsigned char *)(prog->edictsfields))
2102 //#define PRVM_PROG_TO_EDICT(e) (prog->edicts + ((e) / (progs->entityfields * 4)))
2103 int PRVM_EDICT_TO_PROG(prvm_edict_t *e)
2104 {
2105         int n;
2106         n = e - prog->edicts;
2107         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
2108                 Host_Error("PRVM_EDICT_TO_PROG: invalid edict %8p (number %i compared to world at %8p)", e, n, prog->edicts);
2109         return n;// EXPERIMENTAL
2110         //return (unsigned char *)e->v - (unsigned char *)prog->edictsfields;
2111 }
2112 prvm_edict_t *PRVM_PROG_TO_EDICT(int n)
2113 {
2114         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
2115                 Host_Error("PRVM_PROG_TO_EDICT: invalid edict number %i", n);
2116         return prog->edicts + n; // EXPERIMENTAL
2117         //return prog->edicts + ((n) / (progs->entityfields * 4));
2118 }
2119 */
2120
2121
2122 sizebuf_t vm_tempstringsbuf;
2123
2124 const char *PRVM_GetString(int num)
2125 {
2126         if (num >= 0)
2127         {
2128                 if (num < prog->stringssize)
2129                         return prog->strings + num;
2130                 else
2131 #if 1
2132                 if (num <= prog->stringssize + vm_tempstringsbuf.maxsize)
2133                 {
2134                         num -= prog->stringssize;
2135                         if (num < vm_tempstringsbuf.cursize)
2136                                 return (char *)vm_tempstringsbuf.data + num;
2137                         else
2138                         {
2139                                 VM_Warning("PRVM_GetString: Invalid temp-string offset (%i >= %i vm_tempstringsbuf.cursize)", num, vm_tempstringsbuf.cursize);
2140                                 return "";
2141                         }
2142                 }
2143                 else
2144 #endif
2145                 {
2146                         VM_Warning("PRVM_GetString: Invalid constant-string offset (%i >= %i prog->stringssize)", num, prog->stringssize);
2147                         return "";
2148                 }
2149         }
2150         else
2151         {
2152                 num = -1 - num;
2153 #if 0
2154                 if (num >= (1<<30))
2155                 {
2156                         // special range reserved for tempstrings
2157                         num -= (1<<30);
2158                         if (num < vm_tempstringsbuf.cursize)
2159                                 return (char *)vm_tempstringsbuf.data + num;
2160                         else
2161                         {
2162                                 VM_Warning("PRVM_GetString: Invalid temp-string offset (%i >= %i vm_tempstringsbuf.cursize)", num, vm_tempstringsbuf.cursize);
2163                                 return "";
2164                         }
2165                 }
2166                 else
2167 #endif
2168                 if (num < prog->numknownstrings)
2169                 {
2170                         if (!prog->knownstrings[num])
2171                                 VM_Warning("PRVM_GetString: Invalid zone-string offset (%i has been freed)", num);
2172                         return prog->knownstrings[num];
2173                 }
2174                 else
2175                 {
2176                         VM_Warning("PRVM_GetString: Invalid zone-string offset (%i >= %i)", num, prog->numknownstrings);
2177                         return "";
2178                 }
2179         }
2180 }
2181
2182 int PRVM_SetEngineString(const char *s)
2183 {
2184         int i;
2185         if (!s)
2186                 return 0;
2187         if (s >= prog->strings && s <= prog->strings + prog->stringssize)
2188                 PRVM_ERROR("PRVM_SetEngineString: s in prog->strings area");
2189         // if it's in the tempstrings area, use a reserved range
2190         // (otherwise we'd get millions of useless string offsets cluttering the database)
2191         if (s >= (char *)vm_tempstringsbuf.data && s < (char *)vm_tempstringsbuf.data + vm_tempstringsbuf.maxsize)
2192 #if 1
2193                 return prog->stringssize + (s - (char *)vm_tempstringsbuf.data);
2194 #else
2195                 return -1 - ((1<<30) + (s - (char *)vm_tempstringsbuf.data));
2196 #endif
2197         // see if it's a known string address
2198         for (i = 0;i < prog->numknownstrings;i++)
2199                 if (prog->knownstrings[i] == s)
2200                         return -1 - i;
2201         // new unknown engine string
2202         if (developer.integer >= 200)
2203                 Con_Printf("new engine string %p = \"%s\"\n", s, s);
2204         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
2205                 if (!prog->knownstrings[i])
2206                         break;
2207         if (i >= prog->numknownstrings)
2208         {
2209                 if (i >= prog->maxknownstrings)
2210                 {
2211                         const char **oldstrings = prog->knownstrings;
2212                         const unsigned char *oldstrings_freeable = prog->knownstrings_freeable;
2213                         prog->maxknownstrings += 128;
2214                         prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
2215                         prog->knownstrings_freeable = (unsigned char *)PRVM_Alloc(prog->maxknownstrings * sizeof(unsigned char));
2216                         if (prog->numknownstrings)
2217                         {
2218                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
2219                                 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(unsigned char));
2220                         }
2221                 }
2222                 prog->numknownstrings++;
2223         }
2224         prog->firstfreeknownstring = i + 1;
2225         prog->knownstrings[i] = s;
2226         return -1 - i;
2227 }
2228
2229 // temp string handling
2230
2231 // all tempstrings go into this buffer consecutively, and it is reset
2232 // whenever PRVM_ExecuteProgram returns to the engine
2233 // (technically each PRVM_ExecuteProgram call saves the cursize value and
2234 //  restores it on return, so multiple recursive calls can share the same
2235 //  buffer)
2236 // the buffer size is automatically grown as needed
2237
2238 int PRVM_SetTempString(const char *s)
2239 {
2240         int size;
2241         char *t;
2242         if (!s)
2243                 return 0;
2244         size = (int)strlen(s) + 1;
2245         if (developer.integer >= 300)
2246                 Con_Printf("PRVM_SetTempString: cursize %i, size %i\n", vm_tempstringsbuf.cursize, size);
2247         if (vm_tempstringsbuf.maxsize < vm_tempstringsbuf.cursize + size)
2248         {
2249                 sizebuf_t old = vm_tempstringsbuf;
2250                 if (vm_tempstringsbuf.cursize + size >= 1<<28)
2251                         PRVM_ERROR("PRVM_SetTempString: ran out of tempstring memory!  (refusing to grow tempstring buffer over 256MB, cursize %i, size %i)\n", vm_tempstringsbuf.cursize, size);
2252                 vm_tempstringsbuf.maxsize = max(vm_tempstringsbuf.maxsize, 65536);
2253                 while (vm_tempstringsbuf.maxsize < vm_tempstringsbuf.cursize + size)
2254                         vm_tempstringsbuf.maxsize *= 2;
2255                 if (vm_tempstringsbuf.maxsize != old.maxsize || vm_tempstringsbuf.data == NULL)
2256                 {
2257                         if (developer.integer >= 100)
2258                                 Con_Printf("PRVM_SetTempString: enlarging tempstrings buffer (%iKB -> %iKB)\n", old.maxsize/1024, vm_tempstringsbuf.maxsize/1024);
2259                         vm_tempstringsbuf.data = Mem_Alloc(sv_mempool, vm_tempstringsbuf.maxsize);
2260                         if (old.cursize)
2261                                 memcpy(vm_tempstringsbuf.data, old.data, old.cursize);
2262                         if (old.data)
2263                                 Mem_Free(old.data);
2264                 }
2265         }
2266         t = (char *)vm_tempstringsbuf.data + vm_tempstringsbuf.cursize;
2267         memcpy(t, s, size);
2268         vm_tempstringsbuf.cursize += size;
2269         return PRVM_SetEngineString(t);
2270 }
2271
2272 int PRVM_AllocString(size_t bufferlength, char **pointer)
2273 {
2274         int i;
2275         if (!bufferlength)
2276                 return 0;
2277         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
2278                 if (!prog->knownstrings[i])
2279                         break;
2280         if (i >= prog->numknownstrings)
2281         {
2282                 if (i >= prog->maxknownstrings)
2283                 {
2284                         const char **oldstrings = prog->knownstrings;
2285                         const unsigned char *oldstrings_freeable = prog->knownstrings_freeable;
2286                         prog->maxknownstrings += 128;
2287                         prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
2288                         prog->knownstrings_freeable = (unsigned char *)PRVM_Alloc(prog->maxknownstrings * sizeof(unsigned char));
2289                         if (prog->numknownstrings)
2290                         {
2291                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
2292                                 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(unsigned char));
2293                         }
2294                 }
2295                 prog->numknownstrings++;
2296         }
2297         prog->firstfreeknownstring = i + 1;
2298         prog->knownstrings[i] = (char *)PRVM_Alloc(bufferlength);
2299         prog->knownstrings_freeable[i] = true;
2300         if (pointer)
2301                 *pointer = (char *)(prog->knownstrings[i]);
2302         return -1 - i;
2303 }
2304
2305 void PRVM_FreeString(int num)
2306 {
2307         if (num == 0)
2308                 PRVM_ERROR("PRVM_FreeString: attempt to free a NULL string");
2309         else if (num >= 0 && num < prog->stringssize)
2310                 PRVM_ERROR("PRVM_FreeString: attempt to free a constant string");
2311         else if (num < 0 && num >= -prog->numknownstrings)
2312         {
2313                 num = -1 - num;
2314                 if (!prog->knownstrings[num])
2315                         PRVM_ERROR("PRVM_FreeString: attempt to free a non-existent or already freed string");
2316                 if (!prog->knownstrings[num])
2317                         PRVM_ERROR("PRVM_FreeString: attempt to free a string owned by the engine");
2318                 PRVM_Free((char *)prog->knownstrings[num]);
2319                 prog->knownstrings[num] = NULL;
2320                 prog->knownstrings_freeable[num] = false;
2321                 prog->firstfreeknownstring = min(prog->firstfreeknownstring, num);
2322         }
2323         else
2324                 PRVM_ERROR("PRVM_FreeString: invalid string offset %i", num);
2325 }
2326