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         prog->globaloffsets.intermission                  = PRVM_ED_FindGlobalOffset("intermission");
1444         prog->globaloffsets.coop                          = PRVM_ED_FindGlobalOffset("coop");
1445         prog->globaloffsets.deathmatch                    = PRVM_ED_FindGlobalOffset("deathmatch");
1446
1447         // menu qc only uses some functions, nothing else
1448         prog->funcoffsets.m_display                       = PRVM_ED_FindFunctionOffset("m_display");
1449         prog->funcoffsets.m_draw                          = PRVM_ED_FindFunctionOffset("m_draw");
1450         prog->funcoffsets.m_hide                          = PRVM_ED_FindFunctionOffset("m_hide");
1451         prog->funcoffsets.m_init                          = PRVM_ED_FindFunctionOffset("m_init");
1452         prog->funcoffsets.m_keydown                       = PRVM_ED_FindFunctionOffset("m_keydown");
1453         prog->funcoffsets.m_keyup                         = PRVM_ED_FindFunctionOffset("m_keyup");
1454         prog->funcoffsets.m_shutdown                      = PRVM_ED_FindFunctionOffset("m_shutdown");
1455         prog->funcoffsets.m_toggle                        = PRVM_ED_FindFunctionOffset("m_toggle");
1456 }
1457
1458 // not used
1459 /*
1460 typedef struct dpfield_s
1461 {
1462         int type;
1463         char *string;
1464 }
1465 dpfield_t;
1466
1467 #define DPFIELDS (sizeof(dpfields) / sizeof(dpfield_t))
1468
1469 dpfield_t dpfields[] =
1470 {
1471 };
1472 */
1473
1474 /*
1475 ===============
1476 PRVM_ResetProg
1477 ===============
1478 */
1479
1480 void PRVM_ResetProg()
1481 {
1482         PRVM_GCALL(reset_cmd)();
1483         Mem_FreePool(&prog->progs_mempool);
1484         memset(prog,0,sizeof(prvm_prog_t));
1485 }
1486
1487 /*
1488 ===============
1489 PRVM_LoadLNO
1490 ===============
1491 */
1492 void PRVM_LoadLNO( const char *progname ) {
1493         fs_offset_t filesize;
1494         unsigned char *lno;
1495         unsigned int *header;
1496         char filename[512];
1497
1498         FS_StripExtension( progname, filename, sizeof( filename ) );
1499         strlcat( filename, ".lno", sizeof( filename ) );
1500
1501         lno = FS_LoadFile( filename, tempmempool, false, &filesize );
1502         if( !lno ) {
1503                 return;
1504         }
1505
1506 /*
1507 <Spike>    SafeWrite (h, &lnotype, sizeof(int));
1508 <Spike>    SafeWrite (h, &version, sizeof(int));
1509 <Spike>    SafeWrite (h, &numglobaldefs, sizeof(int));
1510 <Spike>    SafeWrite (h, &numpr_globals, sizeof(int));
1511 <Spike>    SafeWrite (h, &numfielddefs, sizeof(int));
1512 <Spike>    SafeWrite (h, &numstatements, sizeof(int));
1513 <Spike>    SafeWrite (h, statement_linenums, numstatements*sizeof(int));
1514 */
1515         if( (unsigned) filesize < (6 + prog->progs->numstatements) * sizeof( int ) ) {
1516                 Mem_Free(lno);
1517                 return;
1518         }
1519
1520         header = (unsigned int *) lno;
1521         if( header[ 0 ] == *(unsigned int *) "LNOF" &&
1522                 LittleLong( header[ 1 ] ) == 1 &&
1523                 (unsigned int)LittleLong( header[ 2 ] ) == (unsigned int)prog->progs->numglobaldefs &&
1524                 (unsigned int)LittleLong( header[ 3 ] ) == (unsigned int)prog->progs->numglobals &&
1525                 (unsigned int)LittleLong( header[ 4 ] ) == (unsigned int)prog->progs->numfielddefs &&
1526                 (unsigned int)LittleLong( header[ 5 ] ) == (unsigned int)prog->progs->numstatements )
1527         {
1528                 prog->statement_linenums = (int *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof( int ) );
1529                 memcpy( prog->statement_linenums, (int *) lno + 6, prog->progs->numstatements * sizeof( int ) );
1530         }
1531         Mem_Free( lno );
1532 }
1533
1534 /*
1535 ===============
1536 PRVM_LoadProgs
1537 ===============
1538 */
1539 void PRVM_LoadProgs (const char * filename, int numrequiredfunc, char **required_func, int numrequiredfields, prvm_required_field_t *required_field, int numrequiredglobals, char **required_global)
1540 {
1541         int i;
1542         dstatement_t *st;
1543         ddef_t *infielddefs;
1544         dfunction_t *dfunctions;
1545         fs_offset_t filesize;
1546
1547         if( prog->loaded ) {
1548                 PRVM_ERROR ("PRVM_LoadProgs: there is already a %s program loaded!", PRVM_NAME );
1549         }
1550
1551         prog->progs = (dprograms_t *)FS_LoadFile (filename, prog->progs_mempool, false, &filesize);
1552         if (prog->progs == NULL || filesize < (fs_offset_t)sizeof(dprograms_t))
1553                 PRVM_ERROR ("PRVM_LoadProgs: couldn't load %s for %s", filename, PRVM_NAME);
1554
1555         Con_DPrintf("%s programs occupy %iK.\n", PRVM_NAME, (int)(filesize/1024));
1556
1557         prog->filecrc = CRC_Block((unsigned char *)prog->progs, filesize);
1558
1559 // byte swap the header
1560         for (i = 0;i < (int) sizeof(*prog->progs) / 4;i++)
1561                 ((int *)prog->progs)[i] = LittleLong ( ((int *)prog->progs)[i] );
1562
1563         if (prog->progs->version != PROG_VERSION)
1564                 PRVM_ERROR ("%s: %s has wrong version number (%i should be %i)", PRVM_NAME, filename, prog->progs->version, PROG_VERSION);
1565         if (prog->progs->crc != prog->headercrc)
1566                 PRVM_ERROR ("%s: %s system vars have been modified, progdefs.h is out of date", PRVM_NAME, filename);
1567
1568         //prog->functions = (dfunction_t *)((unsigned char *)progs + progs->ofs_functions);
1569         dfunctions = (dfunction_t *)((unsigned char *)prog->progs + prog->progs->ofs_functions);
1570
1571         prog->strings = (char *)prog->progs + prog->progs->ofs_strings;
1572         prog->stringssize = 0;
1573         for (i = 0;i < prog->progs->numstrings;i++)
1574         {
1575                 if (prog->progs->ofs_strings + prog->stringssize >= (int)filesize)
1576                         PRVM_ERROR ("%s: %s strings go past end of file", PRVM_NAME, filename);
1577                 prog->stringssize += (int)strlen (prog->strings + prog->stringssize) + 1;
1578         }
1579         prog->numknownstrings = 0;
1580         prog->maxknownstrings = 0;
1581         prog->knownstrings = NULL;
1582         prog->knownstrings_freeable = NULL;
1583
1584         prog->globaldefs = (ddef_t *)((unsigned char *)prog->progs + prog->progs->ofs_globaldefs);
1585
1586         // we need to expand the fielddefs list to include all the engine fields,
1587         // so allocate a new place for it
1588         infielddefs = (ddef_t *)((unsigned char *)prog->progs + prog->progs->ofs_fielddefs);
1589         //                                                                                              ( + DPFIELDS                       )
1590         prog->fielddefs = (ddef_t *)Mem_Alloc(prog->progs_mempool, (prog->progs->numfielddefs + numrequiredfields) * sizeof(ddef_t));
1591
1592         prog->statements = (dstatement_t *)((unsigned char *)prog->progs + prog->progs->ofs_statements);
1593
1594         prog->statement_profile = (double *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof(*prog->statement_profile));
1595
1596         // moved edict_size calculation down below field adding code
1597
1598         //pr_global_struct = (globalvars_t *)((unsigned char *)progs + progs->ofs_globals);
1599         prog->globals.generic = (float *)((unsigned char *)prog->progs + prog->progs->ofs_globals);
1600
1601 // byte swap the lumps
1602         for (i=0 ; i<prog->progs->numstatements ; i++)
1603         {
1604                 prog->statements[i].op = LittleShort(prog->statements[i].op);
1605                 prog->statements[i].a = LittleShort(prog->statements[i].a);
1606                 prog->statements[i].b = LittleShort(prog->statements[i].b);
1607                 prog->statements[i].c = LittleShort(prog->statements[i].c);
1608         }
1609
1610         prog->functions = (mfunction_t *)Mem_Alloc(prog->progs_mempool, sizeof(mfunction_t) * prog->progs->numfunctions);
1611         for (i = 0;i < prog->progs->numfunctions;i++)
1612         {
1613                 prog->functions[i].first_statement = LittleLong (dfunctions[i].first_statement);
1614                 prog->functions[i].parm_start = LittleLong (dfunctions[i].parm_start);
1615                 prog->functions[i].s_name = LittleLong (dfunctions[i].s_name);
1616                 prog->functions[i].s_file = LittleLong (dfunctions[i].s_file);
1617                 prog->functions[i].numparms = LittleLong (dfunctions[i].numparms);
1618                 prog->functions[i].locals = LittleLong (dfunctions[i].locals);
1619                 memcpy(prog->functions[i].parm_size, dfunctions[i].parm_size, sizeof(dfunctions[i].parm_size));
1620         }
1621
1622         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
1623         {
1624                 prog->globaldefs[i].type = LittleShort (prog->globaldefs[i].type);
1625                 prog->globaldefs[i].ofs = LittleShort (prog->globaldefs[i].ofs);
1626                 prog->globaldefs[i].s_name = LittleLong (prog->globaldefs[i].s_name);
1627         }
1628
1629         // copy the progs fields to the new fields list
1630         for (i = 0;i < prog->progs->numfielddefs;i++)
1631         {
1632                 prog->fielddefs[i].type = LittleShort (infielddefs[i].type);
1633                 if (prog->fielddefs[i].type & DEF_SAVEGLOBAL)
1634                         PRVM_ERROR ("PRVM_LoadProgs: prog->fielddefs[i].type & DEF_SAVEGLOBAL in %s", PRVM_NAME);
1635                 prog->fielddefs[i].ofs = LittleShort (infielddefs[i].ofs);
1636                 prog->fielddefs[i].s_name = LittleLong (infielddefs[i].s_name);
1637         }
1638
1639         // append the required fields
1640         for (i = 0;i < (int) numrequiredfields;i++)
1641         {
1642                 prog->fielddefs[prog->progs->numfielddefs].type = required_field[i].type;
1643                 prog->fielddefs[prog->progs->numfielddefs].ofs = prog->progs->entityfields;
1644                 prog->fielddefs[prog->progs->numfielddefs].s_name = PRVM_SetEngineString(required_field[i].name);
1645                 if (prog->fielddefs[prog->progs->numfielddefs].type == ev_vector)
1646                         prog->progs->entityfields += 3;
1647                 else
1648                         prog->progs->entityfields++;
1649                 prog->progs->numfielddefs++;
1650         }
1651
1652         // check required functions
1653         for(i=0 ; i < numrequiredfunc ; i++)
1654                 if(PRVM_ED_FindFunction(required_func[i]) == 0)
1655                         PRVM_ERROR("%s: %s not found in %s",PRVM_NAME, required_func[i], filename);
1656
1657         // check required globals
1658         for(i=0 ; i < numrequiredglobals ; i++)
1659                 if(PRVM_ED_FindGlobal(required_global[i]) == 0)
1660                         PRVM_ERROR("%s: %s not found in %s",PRVM_NAME, required_global[i], filename);
1661
1662         for (i=0 ; i<prog->progs->numglobals ; i++)
1663                 ((int *)prog->globals.generic)[i] = LittleLong (((int *)prog->globals.generic)[i]);
1664
1665         // moved edict_size calculation down here, below field adding code
1666         // LordHavoc: this no longer includes the prvm_edict_t header
1667         prog->edict_size = prog->progs->entityfields * 4;
1668         prog->edictareasize = prog->edict_size * prog->limit_edicts;
1669
1670         // LordHavoc: bounds check anything static
1671         for (i = 0,st = prog->statements;i < prog->progs->numstatements;i++,st++)
1672         {
1673                 switch (st->op)
1674                 {
1675                 case OP_IF:
1676                 case OP_IFNOT:
1677                         if ((unsigned short) st->a >= prog->progs->numglobals || st->b + i < 0 || st->b + i >= prog->progs->numstatements)
1678                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds IF/IFNOT (statement %d) in %s", i, PRVM_NAME);
1679                         break;
1680                 case OP_GOTO:
1681                         if (st->a + i < 0 || st->a + i >= prog->progs->numstatements)
1682                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds GOTO (statement %d) in %s", i, PRVM_NAME);
1683                         break;
1684                 // global global global
1685                 case OP_ADD_F:
1686                 case OP_ADD_V:
1687                 case OP_SUB_F:
1688                 case OP_SUB_V:
1689                 case OP_MUL_F:
1690                 case OP_MUL_V:
1691                 case OP_MUL_FV:
1692                 case OP_MUL_VF:
1693                 case OP_DIV_F:
1694                 case OP_BITAND:
1695                 case OP_BITOR:
1696                 case OP_GE:
1697                 case OP_LE:
1698                 case OP_GT:
1699                 case OP_LT:
1700                 case OP_AND:
1701                 case OP_OR:
1702                 case OP_EQ_F:
1703                 case OP_EQ_V:
1704                 case OP_EQ_S:
1705                 case OP_EQ_E:
1706                 case OP_EQ_FNC:
1707                 case OP_NE_F:
1708                 case OP_NE_V:
1709                 case OP_NE_S:
1710                 case OP_NE_E:
1711                 case OP_NE_FNC:
1712                 case OP_ADDRESS:
1713                 case OP_LOAD_F:
1714                 case OP_LOAD_FLD:
1715                 case OP_LOAD_ENT:
1716                 case OP_LOAD_S:
1717                 case OP_LOAD_FNC:
1718                 case OP_LOAD_V:
1719                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1720                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d)", i);
1721                         break;
1722                 // global none global
1723                 case OP_NOT_F:
1724                 case OP_NOT_V:
1725                 case OP_NOT_S:
1726                 case OP_NOT_FNC:
1727                 case OP_NOT_ENT:
1728                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1729                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1730                         break;
1731                 // 2 globals
1732                 case OP_STOREP_F:
1733                 case OP_STOREP_ENT:
1734                 case OP_STOREP_FLD:
1735                 case OP_STOREP_S:
1736                 case OP_STOREP_FNC:
1737                 case OP_STORE_F:
1738                 case OP_STORE_ENT:
1739                 case OP_STORE_FLD:
1740                 case OP_STORE_S:
1741                 case OP_STORE_FNC:
1742                 case OP_STATE:
1743                 case OP_STOREP_V:
1744                 case OP_STORE_V:
1745                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals)
1746                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1747                         break;
1748                 // 1 global
1749                 case OP_CALL0:
1750                 case OP_CALL1:
1751                 case OP_CALL2:
1752                 case OP_CALL3:
1753                 case OP_CALL4:
1754                 case OP_CALL5:
1755                 case OP_CALL6:
1756                 case OP_CALL7:
1757                 case OP_CALL8:
1758                 case OP_DONE:
1759                 case OP_RETURN:
1760                         if ((unsigned short) st->a >= prog->progs->numglobals)
1761                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1762                         break;
1763                 default:
1764                         Con_DPrintf("PRVM_LoadProgs: unknown opcode %d at statement %d in %s\n", st->op, i, PRVM_NAME);
1765                         break;
1766                 }
1767         }
1768
1769         PRVM_LoadLNO(filename);
1770
1771         PRVM_Init_Exec();
1772
1773         prog->loaded = TRUE;
1774
1775         // set flags & ddef_ts in prog
1776
1777         prog->flag = 0;
1778
1779         PRVM_FindOffsets();
1780
1781         PRVM_GCALL(init_cmd)();
1782
1783         // init mempools
1784         PRVM_MEM_Alloc();
1785 }
1786
1787
1788 void PRVM_Fields_f (void)
1789 {
1790         int i, j, ednum, used, usedamount;
1791         int *counts;
1792         char tempstring[MAX_INPUTLINE], tempstring2[260];
1793         const char *name;
1794         prvm_edict_t *ed;
1795         ddef_t *d;
1796         int *v;
1797
1798         // TODO
1799         /*
1800         if (!sv.active)
1801         {
1802                 Con_Print("no progs loaded\n");
1803                 return;
1804         }
1805         */
1806
1807         if(Cmd_Argc() != 2)
1808         {
1809                 Con_Print("prvm_fields <program name>\n");
1810                 return;
1811         }
1812
1813         PRVM_Begin;
1814         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1815                 return;
1816
1817         counts = (int *)Mem_Alloc(tempmempool, prog->progs->numfielddefs * sizeof(int));
1818         for (ednum = 0;ednum < prog->max_edicts;ednum++)
1819         {
1820                 ed = PRVM_EDICT_NUM(ednum);
1821                 if (ed->priv.required->free)
1822                         continue;
1823                 for (i = 1;i < prog->progs->numfielddefs;i++)
1824                 {
1825                         d = &prog->fielddefs[i];
1826                         name = PRVM_GetString(d->s_name);
1827                         if (name[strlen(name)-2] == '_')
1828                                 continue;       // skip _x, _y, _z vars
1829                         v = (int *)((char *)ed->fields.vp + d->ofs*4);
1830                         // if the value is still all 0, skip the field
1831                         for (j = 0;j < prvm_type_size[d->type & ~DEF_SAVEGLOBAL];j++)
1832                         {
1833                                 if (v[j])
1834                                 {
1835                                         counts[i]++;
1836                                         break;
1837                                 }
1838                         }
1839                 }
1840         }
1841         used = 0;
1842         usedamount = 0;
1843         tempstring[0] = 0;
1844         for (i = 0;i < prog->progs->numfielddefs;i++)
1845         {
1846                 d = &prog->fielddefs[i];
1847                 name = PRVM_GetString(d->s_name);
1848                 if (name[strlen(name)-2] == '_')
1849                         continue;       // skip _x, _y, _z vars
1850                 switch(d->type & ~DEF_SAVEGLOBAL)
1851                 {
1852                 case ev_string:
1853                         strlcat(tempstring, "string   ", sizeof(tempstring));
1854                         break;
1855                 case ev_entity:
1856                         strlcat(tempstring, "entity   ", sizeof(tempstring));
1857                         break;
1858                 case ev_function:
1859                         strlcat(tempstring, "function ", sizeof(tempstring));
1860                         break;
1861                 case ev_field:
1862                         strlcat(tempstring, "field    ", sizeof(tempstring));
1863                         break;
1864                 case ev_void:
1865                         strlcat(tempstring, "void     ", sizeof(tempstring));
1866                         break;
1867                 case ev_float:
1868                         strlcat(tempstring, "float    ", sizeof(tempstring));
1869                         break;
1870                 case ev_vector:
1871                         strlcat(tempstring, "vector   ", sizeof(tempstring));
1872                         break;
1873                 case ev_pointer:
1874                         strlcat(tempstring, "pointer  ", sizeof(tempstring));
1875                         break;
1876                 default:
1877                         sprintf (tempstring2, "bad type %i ", d->type & ~DEF_SAVEGLOBAL);
1878                         strlcat(tempstring, tempstring2, sizeof(tempstring));
1879                         break;
1880                 }
1881                 if (strlen(name) > sizeof(tempstring2)-4)
1882                 {
1883                         memcpy (tempstring2, name, sizeof(tempstring2)-4);
1884                         tempstring2[sizeof(tempstring2)-4] = tempstring2[sizeof(tempstring2)-3] = tempstring2[sizeof(tempstring2)-2] = '.';
1885                         tempstring2[sizeof(tempstring2)-1] = 0;
1886                         name = tempstring2;
1887                 }
1888                 strlcat(tempstring, name, sizeof(tempstring));
1889                 for (j = (int)strlen(name);j < 25;j++)
1890                         strlcat(tempstring, " ", sizeof(tempstring));
1891                 sprintf(tempstring2, "%5d", counts[i]);
1892                 strlcat(tempstring, tempstring2, sizeof(tempstring));
1893                 strlcat(tempstring, "\n", sizeof(tempstring));
1894                 if (strlen(tempstring) >= sizeof(tempstring)/2)
1895                 {
1896                         Con_Print(tempstring);
1897                         tempstring[0] = 0;
1898                 }
1899                 if (counts[i])
1900                 {
1901                         used++;
1902                         usedamount += prvm_type_size[d->type & ~DEF_SAVEGLOBAL];
1903                 }
1904         }
1905         Mem_Free(counts);
1906         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);
1907
1908         PRVM_End;
1909 }
1910
1911 void PRVM_Globals_f (void)
1912 {
1913         int i;
1914         const char *wildcard;
1915         int numculled;
1916                 numculled = 0;
1917         // TODO
1918         /*if (!sv.active)
1919         {
1920                 Con_Print("no progs loaded\n");
1921                 return;
1922         }*/
1923         if(Cmd_Argc () < 2 || Cmd_Argc() > 3)
1924         {
1925                 Con_Print("prvm_globals <program name> <optional name wildcard>\n");
1926                 return;
1927         }
1928
1929         PRVM_Begin;
1930         if(!PRVM_SetProgFromString (Cmd_Argv (1)))
1931                 return;
1932
1933         if( Cmd_Argc() == 3)
1934                 wildcard = Cmd_Argv(2);
1935         else
1936                 wildcard = NULL;
1937
1938         Con_Printf("%s :", PRVM_NAME);
1939
1940         for (i = 0;i < prog->progs->numglobaldefs;i++)
1941         {
1942                 if(wildcard)
1943                         if( !matchpattern( PRVM_GetString(prog->globaldefs[i].s_name), wildcard, 1) )
1944                         {
1945                                 numculled++;
1946                                 continue;
1947                         }
1948                 Con_Printf("%s\n", PRVM_GetString(prog->globaldefs[i].s_name));
1949         }
1950         Con_Printf("%i global variables, %i culled, totalling %i bytes\n", prog->progs->numglobals, numculled, prog->progs->numglobals * 4);
1951
1952         PRVM_End;
1953 }
1954
1955 /*
1956 ===============
1957 PRVM_Global
1958 ===============
1959 */
1960 void PRVM_Global_f(void)
1961 {
1962         ddef_t *global;
1963         if( Cmd_Argc() != 3 ) {
1964                 Con_Printf( "prvm_global <program name> <global name>\n" );
1965                 return;
1966         }
1967
1968         PRVM_Begin;
1969         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1970                 return;
1971
1972         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
1973         if( !global )
1974                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
1975         else
1976                 Con_Printf( "%s: %s\n", Cmd_Argv(2), PRVM_ValueString( (etype_t)global->type, (prvm_eval_t *) &prog->globals.generic[ global->ofs ] ) );
1977         PRVM_End;
1978 }
1979
1980 /*
1981 ===============
1982 PRVM_GlobalSet
1983 ===============
1984 */
1985 void PRVM_GlobalSet_f(void)
1986 {
1987         ddef_t *global;
1988         if( Cmd_Argc() != 4 ) {
1989                 Con_Printf( "prvm_globalset <program name> <global name> <value>\n" );
1990                 return;
1991         }
1992
1993         PRVM_Begin;
1994         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1995                 return;
1996
1997         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
1998         if( !global )
1999                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
2000         else
2001                 PRVM_ED_ParseEpair( NULL, global, Cmd_Argv(3) );
2002         PRVM_End;
2003 }
2004
2005 /*
2006 ===============
2007 PRVM_Init
2008 ===============
2009 */
2010 void PRVM_Init (void)
2011 {
2012         Cmd_AddCommand ("prvm_edict", PRVM_ED_PrintEdict_f, "print all data about an entity number in the selected VM (server, client, menu)");
2013         Cmd_AddCommand ("prvm_edicts", PRVM_ED_PrintEdicts_f, "prints all data about all entities in the selected VM (server, client, menu)");
2014         Cmd_AddCommand ("prvm_edictcount", PRVM_ED_Count_f, "prints number of active entities in the selected VM (server, client, menu)");
2015         Cmd_AddCommand ("prvm_profile", PRVM_Profile_f, "prints execution statistics about the most used QuakeC functions in the selected VM (server, client, menu)");
2016         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)");
2017         Cmd_AddCommand ("prvm_globals", PRVM_Globals_f, "prints all global variables in the selected VM (server, client, menu)");
2018         Cmd_AddCommand ("prvm_global", PRVM_Global_f, "prints value of a specified global variable in the selected VM (server, client, menu)");
2019         Cmd_AddCommand ("prvm_globalset", PRVM_GlobalSet_f, "sets value of a specified global variable in the selected VM (server, client, menu)");
2020         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)");
2021         Cmd_AddCommand ("prvm_printfunction", PRVM_PrintFunction_f, "prints a disassembly (QuakeC instructions) of the specified function in the selected VM (server, client, menu)");
2022         Cmd_AddCommand ("cl_cmd", PRVM_GameCommand_Client_f, "calls the client QC function GameCommand with the supplied string as argument");
2023         Cmd_AddCommand ("menu_cmd", PRVM_GameCommand_Menu_f, "calls the menu QC function GameCommand with the supplied string as argument");
2024         Cmd_AddCommand ("sv_cmd", PRVM_GameCommand_Server_f, "calls the server QC function GameCommand with the supplied string as argument");
2025         // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
2026         Cvar_RegisterVariable (&prvm_boundscheck);
2027         Cvar_RegisterVariable (&prvm_traceqc);
2028         Cvar_RegisterVariable (&prvm_statementprofiling);
2029
2030         //VM_Cmd_Init();
2031 }
2032
2033 /*
2034 ===============
2035 PRVM_InitProg
2036 ===============
2037 */
2038 void PRVM_InitProg(int prognr)
2039 {
2040         if(prognr < 0 || prognr >= PRVM_MAXPROGS)
2041                 Sys_Error("PRVM_InitProg: Invalid program number %i",prognr);
2042
2043         prog = &prog_list[prognr];
2044
2045         if(prog->loaded)
2046                 PRVM_ResetProg();
2047
2048         memset(prog, 0, sizeof(prvm_prog_t));
2049
2050         prog->error_cmd = Host_Error;
2051 }
2052
2053 int PRVM_GetProgNr()
2054 {
2055         return prog - prog_list;
2056 }
2057
2058 void *_PRVM_Alloc(size_t buffersize, const char *filename, int fileline)
2059 {
2060         return _Mem_Alloc(prog->progs_mempool, buffersize, filename, fileline);
2061 }
2062
2063 void _PRVM_Free(void *buffer, const char *filename, int fileline)
2064 {
2065         _Mem_Free(buffer, filename, fileline);
2066 }
2067
2068 void _PRVM_FreeAll(const char *filename, int fileline)
2069 {
2070         prog->progs = NULL;
2071         prog->fielddefs = NULL;
2072         prog->functions = NULL;
2073         _Mem_EmptyPool(prog->progs_mempool, filename, fileline);
2074 }
2075
2076 // LordHavoc: turned PRVM_EDICT_NUM into a #define for speed reasons
2077 prvm_edict_t *PRVM_EDICT_NUM_ERROR(int n, char *filename, int fileline)
2078 {
2079         PRVM_ERROR ("PRVM_EDICT_NUM: %s: bad number %i (called at %s:%i)", PRVM_NAME, n, filename, fileline);
2080         return NULL;
2081 }
2082
2083 /*
2084 int NUM_FOR_EDICT_ERROR(prvm_edict_t *e)
2085 {
2086         PRVM_ERROR ("PRVM_NUM_FOR_EDICT: bad pointer %p (world is %p, entity number would be %i)", e, prog->edicts, e - prog->edicts);
2087         return 0;
2088 }
2089
2090 int PRVM_NUM_FOR_EDICT(prvm_edict_t *e)
2091 {
2092         int n;
2093         n = e - prog->edicts;
2094         if ((unsigned int)n >= prog->limit_edicts)
2095                 Host_Error ("PRVM_NUM_FOR_EDICT: bad pointer");
2096         return n;
2097 }
2098
2099 //int NoCrash_NUM_FOR_EDICT(prvm_edict_t *e)
2100 //{
2101 //      return e - prog->edicts;
2102 //}
2103
2104 //#define       PRVM_EDICT_TO_PROG(e) ((unsigned char *)(((prvm_edict_t *)e)->v) - (unsigned char *)(prog->edictsfields))
2105 //#define PRVM_PROG_TO_EDICT(e) (prog->edicts + ((e) / (progs->entityfields * 4)))
2106 int PRVM_EDICT_TO_PROG(prvm_edict_t *e)
2107 {
2108         int n;
2109         n = e - prog->edicts;
2110         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
2111                 Host_Error("PRVM_EDICT_TO_PROG: invalid edict %8p (number %i compared to world at %8p)", e, n, prog->edicts);
2112         return n;// EXPERIMENTAL
2113         //return (unsigned char *)e->v - (unsigned char *)prog->edictsfields;
2114 }
2115 prvm_edict_t *PRVM_PROG_TO_EDICT(int n)
2116 {
2117         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
2118                 Host_Error("PRVM_PROG_TO_EDICT: invalid edict number %i", n);
2119         return prog->edicts + n; // EXPERIMENTAL
2120         //return prog->edicts + ((n) / (progs->entityfields * 4));
2121 }
2122 */
2123
2124
2125 sizebuf_t vm_tempstringsbuf;
2126
2127 const char *PRVM_GetString(int num)
2128 {
2129         if (num >= 0)
2130         {
2131                 if (num < prog->stringssize)
2132                         return prog->strings + num;
2133                 else
2134 #if 1
2135                 if (num <= prog->stringssize + vm_tempstringsbuf.maxsize)
2136                 {
2137                         num -= prog->stringssize;
2138                         if (num < vm_tempstringsbuf.cursize)
2139                                 return (char *)vm_tempstringsbuf.data + num;
2140                         else
2141                         {
2142                                 VM_Warning("PRVM_GetString: Invalid temp-string offset (%i >= %i vm_tempstringsbuf.cursize)", num, vm_tempstringsbuf.cursize);
2143                                 return "";
2144                         }
2145                 }
2146                 else
2147 #endif
2148                 {
2149                         VM_Warning("PRVM_GetString: Invalid constant-string offset (%i >= %i prog->stringssize)", num, prog->stringssize);
2150                         return "";
2151                 }
2152         }
2153         else
2154         {
2155                 num = -1 - num;
2156 #if 0
2157                 if (num >= (1<<30))
2158                 {
2159                         // special range reserved for tempstrings
2160                         num -= (1<<30);
2161                         if (num < vm_tempstringsbuf.cursize)
2162                                 return (char *)vm_tempstringsbuf.data + num;
2163                         else
2164                         {
2165                                 VM_Warning("PRVM_GetString: Invalid temp-string offset (%i >= %i vm_tempstringsbuf.cursize)", num, vm_tempstringsbuf.cursize);
2166                                 return "";
2167                         }
2168                 }
2169                 else
2170 #endif
2171                 if (num < prog->numknownstrings)
2172                 {
2173                         if (!prog->knownstrings[num])
2174                                 VM_Warning("PRVM_GetString: Invalid zone-string offset (%i has been freed)", num);
2175                         return prog->knownstrings[num];
2176                 }
2177                 else
2178                 {
2179                         VM_Warning("PRVM_GetString: Invalid zone-string offset (%i >= %i)", num, prog->numknownstrings);
2180                         return "";
2181                 }
2182         }
2183 }
2184
2185 int PRVM_SetEngineString(const char *s)
2186 {
2187         int i;
2188         if (!s)
2189                 return 0;
2190         if (s >= prog->strings && s <= prog->strings + prog->stringssize)
2191                 PRVM_ERROR("PRVM_SetEngineString: s in prog->strings area");
2192         // if it's in the tempstrings area, use a reserved range
2193         // (otherwise we'd get millions of useless string offsets cluttering the database)
2194         if (s >= (char *)vm_tempstringsbuf.data && s < (char *)vm_tempstringsbuf.data + vm_tempstringsbuf.maxsize)
2195 #if 1
2196                 return prog->stringssize + (s - (char *)vm_tempstringsbuf.data);
2197 #else
2198                 return -1 - ((1<<30) + (s - (char *)vm_tempstringsbuf.data));
2199 #endif
2200         // see if it's a known string address
2201         for (i = 0;i < prog->numknownstrings;i++)
2202                 if (prog->knownstrings[i] == s)
2203                         return -1 - i;
2204         // new unknown engine string
2205         if (developer.integer >= 200)
2206                 Con_Printf("new engine string %p = \"%s\"\n", s, s);
2207         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
2208                 if (!prog->knownstrings[i])
2209                         break;
2210         if (i >= prog->numknownstrings)
2211         {
2212                 if (i >= prog->maxknownstrings)
2213                 {
2214                         const char **oldstrings = prog->knownstrings;
2215                         const unsigned char *oldstrings_freeable = prog->knownstrings_freeable;
2216                         prog->maxknownstrings += 128;
2217                         prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
2218                         prog->knownstrings_freeable = (unsigned char *)PRVM_Alloc(prog->maxknownstrings * sizeof(unsigned char));
2219                         if (prog->numknownstrings)
2220                         {
2221                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
2222                                 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(unsigned char));
2223                         }
2224                 }
2225                 prog->numknownstrings++;
2226         }
2227         prog->firstfreeknownstring = i + 1;
2228         prog->knownstrings[i] = s;
2229         return -1 - i;
2230 }
2231
2232 // temp string handling
2233
2234 // all tempstrings go into this buffer consecutively, and it is reset
2235 // whenever PRVM_ExecuteProgram returns to the engine
2236 // (technically each PRVM_ExecuteProgram call saves the cursize value and
2237 //  restores it on return, so multiple recursive calls can share the same
2238 //  buffer)
2239 // the buffer size is automatically grown as needed
2240
2241 int PRVM_SetTempString(const char *s)
2242 {
2243         int size;
2244         char *t;
2245         if (!s)
2246                 return 0;
2247         size = (int)strlen(s) + 1;
2248         if (developer.integer >= 300)
2249                 Con_Printf("PRVM_SetTempString: cursize %i, size %i\n", vm_tempstringsbuf.cursize, size);
2250         if (vm_tempstringsbuf.maxsize < vm_tempstringsbuf.cursize + size)
2251         {
2252                 sizebuf_t old = vm_tempstringsbuf;
2253                 if (vm_tempstringsbuf.cursize + size >= 1<<28)
2254                         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);
2255                 vm_tempstringsbuf.maxsize = max(vm_tempstringsbuf.maxsize, 65536);
2256                 while (vm_tempstringsbuf.maxsize < vm_tempstringsbuf.cursize + size)
2257                         vm_tempstringsbuf.maxsize *= 2;
2258                 if (vm_tempstringsbuf.maxsize != old.maxsize || vm_tempstringsbuf.data == NULL)
2259                 {
2260                         if (developer.integer >= 100)
2261                                 Con_Printf("PRVM_SetTempString: enlarging tempstrings buffer (%iKB -> %iKB)\n", old.maxsize/1024, vm_tempstringsbuf.maxsize/1024);
2262                         vm_tempstringsbuf.data = Mem_Alloc(sv_mempool, vm_tempstringsbuf.maxsize);
2263                         if (old.cursize)
2264                                 memcpy(vm_tempstringsbuf.data, old.data, old.cursize);
2265                         if (old.data)
2266                                 Mem_Free(old.data);
2267                 }
2268         }
2269         t = (char *)vm_tempstringsbuf.data + vm_tempstringsbuf.cursize;
2270         memcpy(t, s, size);
2271         vm_tempstringsbuf.cursize += size;
2272         return PRVM_SetEngineString(t);
2273 }
2274
2275 int PRVM_AllocString(size_t bufferlength, char **pointer)
2276 {
2277         int i;
2278         if (!bufferlength)
2279                 return 0;
2280         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
2281                 if (!prog->knownstrings[i])
2282                         break;
2283         if (i >= prog->numknownstrings)
2284         {
2285                 if (i >= prog->maxknownstrings)
2286                 {
2287                         const char **oldstrings = prog->knownstrings;
2288                         const unsigned char *oldstrings_freeable = prog->knownstrings_freeable;
2289                         prog->maxknownstrings += 128;
2290                         prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
2291                         prog->knownstrings_freeable = (unsigned char *)PRVM_Alloc(prog->maxknownstrings * sizeof(unsigned char));
2292                         if (prog->numknownstrings)
2293                         {
2294                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
2295                                 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(unsigned char));
2296                         }
2297                 }
2298                 prog->numknownstrings++;
2299         }
2300         prog->firstfreeknownstring = i + 1;
2301         prog->knownstrings[i] = (char *)PRVM_Alloc(bufferlength);
2302         prog->knownstrings_freeable[i] = true;
2303         if (pointer)
2304                 *pointer = (char *)(prog->knownstrings[i]);
2305         return -1 - i;
2306 }
2307
2308 void PRVM_FreeString(int num)
2309 {
2310         if (num == 0)
2311                 PRVM_ERROR("PRVM_FreeString: attempt to free a NULL string");
2312         else if (num >= 0 && num < prog->stringssize)
2313                 PRVM_ERROR("PRVM_FreeString: attempt to free a constant string");
2314         else if (num < 0 && num >= -prog->numknownstrings)
2315         {
2316                 num = -1 - num;
2317                 if (!prog->knownstrings[num])
2318                         PRVM_ERROR("PRVM_FreeString: attempt to free a non-existent or already freed string");
2319                 if (!prog->knownstrings[num])
2320                         PRVM_ERROR("PRVM_FreeString: attempt to free a string owned by the engine");
2321                 PRVM_Free((char *)prog->knownstrings[num]);
2322                 prog->knownstrings[num] = NULL;
2323                 prog->knownstrings_freeable[num] = false;
2324                 prog->firstfreeknownstring = min(prog->firstfreeknownstring, num);
2325         }
2326         else
2327                 PRVM_ERROR("PRVM_FreeString: invalid string offset %i", num);
2328 }
2329