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 #ifdef PRVM_BOUNDSCHECK_CVAR
  36 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)"};
  37 #endif
  38 // LordHavoc: prints every opcode as it executes - warning: this is significant spew
  39 cvar_t prvm_traceqc = {0, "prvm_traceqc", "0", "prints every QuakeC statement as it is executed (only for really thorough debugging!)"};
  40 // LordHavoc: counts usage of each QuakeC statement
  41 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)"};
  42 cvar_t prvm_backtraceforwarnings = {0, "prvm_backtraceforwarnings", "0", "print a backtrace for warnings too"};
  43
  44 extern sizebuf_t vm_tempstringsbuf;
  45
  46 //============================================================================
  47 // mempool handling
  48
  49 /*
  50 ===============
  51 PRVM_MEM_Alloc
  52 ===============
  53 */
  54 void PRVM_MEM_Alloc(void)
  55 {
  56         int i;
  57
  58         // reserve space for the null entity aka world
  59         // check bound of max_edicts
  60         prog->max_edicts = bound(1 + prog->reserved_edicts, prog->max_edicts, prog->limit_edicts);
  61         prog->num_edicts = bound(1 + prog->reserved_edicts, prog->num_edicts, prog->max_edicts);
  62
  63         // edictprivate_size has to be min as big prvm_edict_private_t
  64         prog->edictprivate_size = max(prog->edictprivate_size,(int)sizeof(prvm_edict_private_t));
  65
  66         // alloc edicts
  67         prog->edicts = (prvm_edict_t *)Mem_Alloc(prog->progs_mempool,prog->limit_edicts * sizeof(prvm_edict_t));
  68
  69         // alloc edict private space
  70         prog->edictprivate = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edictprivate_size);
  71
  72         // alloc edict fields
  73         prog->edictsfields = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edict_size);
  74
  75         // set edict pointers
  76         for(i = 0; i < prog->max_edicts; i++)
  77         {
  78                 prog->edicts[i].priv.required = (prvm_edict_private_t *)((unsigned char  *)prog->edictprivate + i * prog->edictprivate_size);
  79                 prog->edicts[i].fields.vp = (void*)((unsigned char *)prog->edictsfields + i * prog->edict_size);
  80         }
  81 }
  82
  83 /*
  84 ===============
  85 PRVM_MEM_IncreaseEdicts
  86 ===============
  87 */
  88 void PRVM_MEM_IncreaseEdicts(void)
  89 {
  90         int             i;
  91         int             oldmaxedicts = prog->max_edicts;
  92         void    *oldedictsfields = prog->edictsfields;
  93         void    *oldedictprivate = prog->edictprivate;
  94
  95         if(prog->max_edicts >= prog->limit_edicts)
  96                 return;
  97
  98         PRVM_GCALL(begin_increase_edicts)();
  99
 100         // increase edicts
 101         prog->max_edicts = min(prog->max_edicts + 256, prog->limit_edicts);
 102
 103         prog->edictsfields = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edict_size);
 104         prog->edictprivate = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edictprivate_size);
 105
 106         memcpy(prog->edictsfields, oldedictsfields, oldmaxedicts * prog->edict_size);
 107         memcpy(prog->edictprivate, oldedictprivate, oldmaxedicts * prog->edictprivate_size);
 108
 109         //set e and v pointers
 110         for(i = 0; i < prog->max_edicts; i++)
 111         {
 112                 prog->edicts[i].priv.required  = (prvm_edict_private_t *)((unsigned char  *)prog->edictprivate + i * prog->edictprivate_size);
 113                 prog->edicts[i].fields.vp = (void*)((unsigned char *)prog->edictsfields + i * prog->edict_size);
 114         }
 115
 116         PRVM_GCALL(end_increase_edicts)();
 117
 118         Mem_Free(oldedictsfields);
 119         Mem_Free(oldedictprivate);
 120 }
 121
 122 //============================================================================
 123 // normal prvm
 124
 125 int PRVM_ED_FindFieldOffset(const char *field)
 126 {
 127         ddef_t *d;
 128         d = PRVM_ED_FindField(field);
 129         if (!d)
 130                 return -1;
 131         return d->ofs;
 132 }
 133
 134 int PRVM_ED_FindGlobalOffset(const char *global)
 135 {
 136         ddef_t *d;
 137         d = PRVM_ED_FindGlobal(global);
 138         if (!d)
 139                 return -1;
 140         return d->ofs;
 141 }
 142
 143 func_t PRVM_ED_FindFunctionOffset(const char *function)
 144 {
 145         mfunction_t *f;
 146         f = PRVM_ED_FindFunction(function);
 147         if (!f)
 148                 return 0;
 149         return (func_t)(f - prog->functions);
 150 }
 151
 152 qboolean PRVM_ProgLoaded(int prognr)
 153 {
 154         if(prognr < 0 || prognr >= PRVM_MAXPROGS)
 155                 return FALSE;
 156
 157         return (prog_list[prognr].loaded ? TRUE : FALSE);
 158 }
 159
 160 /*
 161 =================
 162 PRVM_SetProgFromString
 163 =================
 164 */
 165 // perhaps add a return value when the str doesnt exist
 166 qboolean PRVM_SetProgFromString(const char *str)
 167 {
 168         int i = 0;
 169         for(; i < PRVM_MAXPROGS ; i++)
 170                 if(prog_list[i].name && !strcmp(prog_list[i].name,str))
 171                 {
 172                         if(prog_list[i].loaded)
 173                         {
 174                                 prog = &prog_list[i];
 175                                 return TRUE;
 176                         }
 177                         else
 178                         {
 179                                 Con_Printf("%s not loaded !\n",PRVM_NAME);
 180                                 return FALSE;
 181                         }
 182                 }
 183
 184         Con_Printf("Invalid program name %s !\n", str);
 185         return FALSE;
 186 }
 187
 188 /*
 189 =================
 190 PRVM_SetProg
 191 =================
 192 */
 193 void PRVM_SetProg(int prognr)
 194 {
 195         if(0 <= prognr && prognr < PRVM_MAXPROGS)
 196         {
 197                 if(prog_list[prognr].loaded)
 198                         prog = &prog_list[prognr];
 199                 else
 200                         PRVM_ERROR("%i not loaded !", prognr);
 201                 return;
 202         }
 203         PRVM_ERROR("Invalid program number %i", prognr);
 204 }
 205
 206 /*
 207 =================
 208 PRVM_ED_ClearEdict
 209
 210 Sets everything to NULL
 211 =================
 212 */
 213 void PRVM_ED_ClearEdict (prvm_edict_t *e)
 214 {
 215         memset (e->fields.vp, 0, prog->progs->entityfields * 4);
 216         e->priv.required->free = false;
 217
 218         // AK: Let the init_edict function determine if something needs to be initialized
 219         PRVM_GCALL(init_edict)(e);
 220 }
 221
 222 /*
 223 =================
 224 PRVM_ED_Alloc
 225
 226 Either finds a free edict, or allocates a new one.
 227 Try to avoid reusing an entity that was recently freed, because it
 228 can cause the client to think the entity morphed into something else
 229 instead of being removed and recreated, which can cause interpolated
 230 angles and bad trails.
 231 =================
 232 */
 233 prvm_edict_t *PRVM_ED_Alloc (void)
 234 {
 235         int                     i;
 236         prvm_edict_t            *e;
 237
 238         // the client qc dont need maxclients
 239         // thus it doesnt need to use svs.maxclients
 240         // AK:  changed i=svs.maxclients+1
 241         // AK:  changed so the edict 0 wont spawn -> used as reserved/world entity
 242         //              although the menu/client has no world
 243         for (i = prog->reserved_edicts + 1;i < prog->num_edicts;i++)
 244         {
 245                 e = PRVM_EDICT_NUM(i);
 246                 // the first couple seconds of server time can involve a lot of
 247                 // freeing and allocating, so relax the replacement policy
 248                 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 ) )
 249                 {
 250                         PRVM_ED_ClearEdict (e);
 251                         return e;
 252                 }
 253         }
 254
 255         if (i == prog->limit_edicts)
 256                 PRVM_ERROR ("%s: PRVM_ED_Alloc: no free edicts",PRVM_NAME);
 257
 258         prog->num_edicts++;
 259         if (prog->num_edicts >= prog->max_edicts)
 260                 PRVM_MEM_IncreaseEdicts();
 261
 262         e = PRVM_EDICT_NUM(i);
 263         PRVM_ED_ClearEdict (e);
 264
 265         return e;
 266 }
 267
 268 /*
 269 =================
 270 PRVM_ED_Free
 271
 272 Marks the edict as free
 273 FIXME: walk all entities and NULL out references to this entity
 274 =================
 275 */
 276 void PRVM_ED_Free (prvm_edict_t *ed)
 277 {
 278         // dont delete the null entity (world) or reserved edicts
 279         if(PRVM_NUM_FOR_EDICT(ed) <= prog->reserved_edicts )
 280                 return;
 281
 282         PRVM_GCALL(free_edict)(ed);
 283
 284         ed->priv.required->free = true;
 285         ed->priv.required->freetime = prog->globaloffsets.time >= 0 ? PRVM_GLOBALFIELDVALUE(prog->globaloffsets.time)->_float : 0;
 286 }
 287
 288 //===========================================================================
 289
 290 /*
 291 ============
 292 PRVM_ED_GlobalAtOfs
 293 ============
 294 */
 295 ddef_t *PRVM_ED_GlobalAtOfs (int ofs)
 296 {
 297         ddef_t          *def;
 298         int                     i;
 299
 300         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
 301         {
 302                 def = &prog->globaldefs[i];
 303                 if (def->ofs == ofs)
 304                         return def;
 305         }
 306         return NULL;
 307 }
 308
 309 /*
 310 ============
 311 PRVM_ED_FieldAtOfs
 312 ============
 313 */
 314 ddef_t *PRVM_ED_FieldAtOfs (int ofs)
 315 {
 316         ddef_t          *def;
 317         int                     i;
 318
 319         for (i=0 ; i<prog->progs->numfielddefs ; i++)
 320         {
 321                 def = &prog->fielddefs[i];
 322                 if (def->ofs == ofs)
 323                         return def;
 324         }
 325         return NULL;
 326 }
 327
 328 /*
 329 ============
 330 PRVM_ED_FindField
 331 ============
 332 */
 333 ddef_t *PRVM_ED_FindField (const char *name)
 334 {
 335         ddef_t *def;
 336         int i;
 337
 338         for (i=0 ; i<prog->progs->numfielddefs ; i++)
 339         {
 340                 def = &prog->fielddefs[i];
 341                 if (!strcmp(PRVM_GetString(def->s_name), name))
 342                         return def;
 343         }
 344         return NULL;
 345 }
 346
 347 /*
 348 ============
 349 PRVM_ED_FindGlobal
 350 ============
 351 */
 352 ddef_t *PRVM_ED_FindGlobal (const char *name)
 353 {
 354         ddef_t *def;
 355         int i;
 356
 357         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
 358         {
 359                 def = &prog->globaldefs[i];
 360                 if (!strcmp(PRVM_GetString(def->s_name), name))
 361                         return def;
 362         }
 363         return NULL;
 364 }
 365
 366
 367 /*
 368 ============
 369 PRVM_ED_FindFunction
 370 ============
 371 */
 372 mfunction_t *PRVM_ED_FindFunction (const char *name)
 373 {
 374         mfunction_t             *func;
 375         int                             i;
 376
 377         for (i=0 ; i<prog->progs->numfunctions ; i++)
 378         {
 379                 func = &prog->functions[i];
 380                 if (!strcmp(PRVM_GetString(func->s_name), name))
 381                         return func;
 382         }
 383         return NULL;
 384 }
 385
 386
 387 /*
 388 ============
 389 PRVM_ValueString
 390
 391 Returns a string describing *data in a type specific manner
 392 =============
 393 */
 394 char *PRVM_ValueString (etype_t type, prvm_eval_t *val)
 395 {
 396         static char line[MAX_INPUTLINE];
 397         ddef_t *def;
 398         mfunction_t *f;
 399         int n;
 400
 401         type = (etype_t)((int) type & ~DEF_SAVEGLOBAL);
 402
 403         switch (type)
 404         {
 405         case ev_string:
 406                 strlcpy (line, PRVM_GetString (val->string), sizeof (line));
 407                 break;
 408         case ev_entity:
 409                 n = val->edict;
 410                 if (n < 0 || n >= prog->limit_edicts)
 411                         sprintf (line, "entity %i (invalid!)", n);
 412                 else
 413                         sprintf (line, "entity %i", n);
 414                 break;
 415         case ev_function:
 416                 f = prog->functions + val->function;
 417                 sprintf (line, "%s()", PRVM_GetString(f->s_name));
 418                 break;
 419         case ev_field:
 420                 def = PRVM_ED_FieldAtOfs ( val->_int );
 421                 sprintf (line, ".%s", PRVM_GetString(def->s_name));
 422                 break;
 423         case ev_void:
 424                 sprintf (line, "void");
 425                 break;
 426         case ev_float:
 427                 // LordHavoc: changed from %5.1f to %10.4f
 428                 sprintf (line, "%10.4f", val->_float);
 429                 break;
 430         case ev_vector:
 431                 // LordHavoc: changed from %5.1f to %10.4f
 432                 sprintf (line, "'%10.4f %10.4f %10.4f'", val->vector[0], val->vector[1], val->vector[2]);
 433                 break;
 434         case ev_pointer:
 435                 sprintf (line, "pointer");
 436                 break;
 437         default:
 438                 sprintf (line, "bad type %i", (int) type);
 439                 break;
 440         }
 441
 442         return line;
 443 }
 444
 445 /*
 446 ============
 447 PRVM_UglyValueString
 448
 449 Returns a string describing *data in a type specific manner
 450 Easier to parse than PR_ValueString
 451 =============
 452 */
 453 char *PRVM_UglyValueString (etype_t type, prvm_eval_t *val)
 454 {
 455         static char line[MAX_INPUTLINE];
 456         int i;
 457         const char *s;
 458         ddef_t *def;
 459         mfunction_t *f;
 460
 461         type = (etype_t)((int)type & ~DEF_SAVEGLOBAL);
 462
 463         switch (type)
 464         {
 465         case ev_string:
 466                 // Parse the string a bit to turn special characters
 467                 // (like newline, specifically) into escape codes,
 468                 // this fixes saving games from various mods
 469                 s = PRVM_GetString (val->string);
 470                 for (i = 0;i < (int)sizeof(line) - 2 && *s;)
 471                 {
 472                         if (*s == '\n')
 473                         {
 474                                 line[i++] = '\\';
 475                                 line[i++] = 'n';
 476                         }
 477                         else if (*s == '\r')
 478                         {
 479                                 line[i++] = '\\';
 480                                 line[i++] = 'r';
 481                         }
 482                         else
 483                                 line[i++] = *s;
 484                         s++;
 485                 }
 486                 line[i] = '\0';
 487                 break;
 488         case ev_entity:
 489                 dpsnprintf (line, sizeof (line), "%i", PRVM_NUM_FOR_EDICT(PRVM_PROG_TO_EDICT(val->edict)));
 490                 break;
 491         case ev_function:
 492                 f = prog->functions + val->function;
 493                 strlcpy (line, PRVM_GetString (f->s_name), sizeof (line));
 494                 break;
 495         case ev_field:
 496                 def = PRVM_ED_FieldAtOfs ( val->_int );
 497                 dpsnprintf (line, sizeof (line), ".%s", PRVM_GetString(def->s_name));
 498                 break;
 499         case ev_void:
 500                 dpsnprintf (line, sizeof (line), "void");
 501                 break;
 502         case ev_float:
 503                 dpsnprintf (line, sizeof (line), "%f", val->_float);
 504                 break;
 505         case ev_vector:
 506                 dpsnprintf (line, sizeof (line), "%f %f %f", val->vector[0], val->vector[1], val->vector[2]);
 507                 break;
 508         default:
 509                 dpsnprintf (line, sizeof (line), "bad type %i", type);
 510                 break;
 511         }
 512
 513         return line;
 514 }
 515
 516 /*
 517 ============
 518 PRVM_GlobalString
 519
 520 Returns a string with a description and the contents of a global,
 521 padded to 20 field width
 522 ============
 523 */
 524 char *PRVM_GlobalString (int ofs)
 525 {
 526         char    *s;
 527         //size_t        i;
 528         ddef_t  *def;
 529         void    *val;
 530         static char     line[128];
 531
 532         val = (void *)&prog->globals.generic[ofs];
 533         def = PRVM_ED_GlobalAtOfs(ofs);
 534         if (!def)
 535                 sprintf (line,"GLOBAL%i", ofs);
 536         else
 537         {
 538                 s = PRVM_ValueString ((etype_t)def->type, (prvm_eval_t *)val);
 539                 sprintf (line,"%s (=%s)", PRVM_GetString(def->s_name), s);
 540         }
 541
 542         //i = strlen(line);
 543         //for ( ; i<20 ; i++)
 544         //      strcat (line," ");
 545         //strcat (line," ");
 546
 547         return line;
 548 }
 549
 550 char *PRVM_GlobalStringNoContents (int ofs)
 551 {
 552         //size_t        i;
 553         ddef_t  *def;
 554         static char     line[128];
 555
 556         def = PRVM_ED_GlobalAtOfs(ofs);
 557         if (!def)
 558                 sprintf (line,"GLOBAL%i", ofs);
 559         else
 560                 sprintf (line,"%s", PRVM_GetString(def->s_name));
 561
 562         //i = strlen(line);
 563         //for ( ; i<20 ; i++)
 564         //      strcat (line," ");
 565         //strcat (line," ");
 566
 567         return line;
 568 }
 569
 570
 571 /*
 572 =============
 573 PRVM_ED_Print
 574
 575 For debugging
 576 =============
 577 */
 578 // LordHavoc: optimized this to print out much more quickly (tempstring)
 579 // LordHavoc: changed to print out every 4096 characters (incase there are a lot of fields to print)
 580 void PRVM_ED_Print(prvm_edict_t *ed, const char *wildcard_fieldname)
 581 {
 582         size_t  l;
 583         ddef_t  *d;
 584         int             *v;
 585         int             i, j;
 586         const char      *name;
 587         int             type;
 588         char    tempstring[MAX_INPUTLINE], tempstring2[260]; // temporary string buffers
 589
 590         if (ed->priv.required->free)
 591         {
 592                 Con_Printf("%s: FREE\n",PRVM_NAME);
 593                 return;
 594         }
 595
 596         tempstring[0] = 0;
 597         sprintf(tempstring, "\n%s EDICT %i:\n", PRVM_NAME, PRVM_NUM_FOR_EDICT(ed));
 598         for (i=1 ; i<prog->progs->numfielddefs ; i++)
 599         {
 600                 d = &prog->fielddefs[i];
 601                 name = PRVM_GetString(d->s_name);
 602                 if (name[strlen(name)-2] == '_')
 603                         continue;       // skip _x, _y, _z vars
 604
 605                 // Check Field Name Wildcard
 606                 if(wildcard_fieldname)
 607                         if( !matchpattern(name, wildcard_fieldname, 1) )
 608                                 // Didn't match; skip
 609                                 continue;
 610
 611                 v = (int *)((char *)ed->fields.vp + d->ofs*4);
 612
 613         // if the value is still all 0, skip the field
 614                 type = d->type & ~DEF_SAVEGLOBAL;
 615
 616                 for (j=0 ; j<prvm_type_size[type] ; j++)
 617                         if (v[j])
 618                                 break;
 619                 if (j == prvm_type_size[type])
 620                         continue;
 621
 622                 if (strlen(name) > sizeof(tempstring2)-4)
 623                 {
 624                         memcpy (tempstring2, name, sizeof(tempstring2)-4);
 625                         tempstring2[sizeof(tempstring2)-4] = tempstring2[sizeof(tempstring2)-3] = tempstring2[sizeof(tempstring2)-2] = '.';
 626                         tempstring2[sizeof(tempstring2)-1] = 0;
 627                         name = tempstring2;
 628                 }
 629                 strlcat(tempstring, name, sizeof(tempstring));
 630                 for (l = strlen(name);l < 14;l++)
 631                         strlcat(tempstring, " ", sizeof(tempstring));
 632                 strlcat(tempstring, " ", sizeof(tempstring));
 633
 634                 name = PRVM_ValueString((etype_t)d->type, (prvm_eval_t *)v);
 635                 if (strlen(name) > sizeof(tempstring2)-4)
 636                 {
 637                         memcpy (tempstring2, name, sizeof(tempstring2)-4);
 638                         tempstring2[sizeof(tempstring2)-4] = tempstring2[sizeof(tempstring2)-3] = tempstring2[sizeof(tempstring2)-2] = '.';
 639                         tempstring2[sizeof(tempstring2)-1] = 0;
 640                         name = tempstring2;
 641                 }
 642                 strlcat(tempstring, name, sizeof(tempstring));
 643                 strlcat(tempstring, "\n", sizeof(tempstring));
 644                 if (strlen(tempstring) >= sizeof(tempstring)/2)
 645                 {
 646                         Con_Print(tempstring);
 647                         tempstring[0] = 0;
 648                 }
 649         }
 650         if (tempstring[0])
 651                 Con_Print(tempstring);
 652 }
 653
 654 /*
 655 =============
 656 PRVM_ED_Write
 657
 658 For savegames
 659 =============
 660 */
 661 void PRVM_ED_Write (qfile_t *f, prvm_edict_t *ed)
 662 {
 663         ddef_t  *d;
 664         int             *v;
 665         int             i, j;
 666         const char      *name;
 667         int             type;
 668
 669         FS_Print(f, "{\n");
 670
 671         if (ed->priv.required->free)
 672         {
 673                 FS_Print(f, "}\n");
 674                 return;
 675         }
 676
 677         for (i=1 ; i<prog->progs->numfielddefs ; i++)
 678         {
 679                 d = &prog->fielddefs[i];
 680                 name = PRVM_GetString(d->s_name);
 681                 if (name[strlen(name)-2] == '_')
 682                         continue;       // skip _x, _y, _z vars
 683
 684                 v = (int *)((char *)ed->fields.vp + d->ofs*4);
 685
 686         // if the value is still all 0, skip the field
 687                 type = d->type & ~DEF_SAVEGLOBAL;
 688                 for (j=0 ; j<prvm_type_size[type] ; j++)
 689                         if (v[j])
 690                                 break;
 691                 if (j == prvm_type_size[type])
 692                         continue;
 693
 694                 FS_Printf(f,"\"%s\" ",name);
 695                 FS_Printf(f,"\"%s\"\n", PRVM_UglyValueString((etype_t)d->type, (prvm_eval_t *)v));
 696         }
 697
 698         FS_Print(f, "}\n");
 699 }
 700
 701 void PRVM_ED_PrintNum (int ent, const char *wildcard_fieldname)
 702 {
 703         PRVM_ED_Print(PRVM_EDICT_NUM(ent), wildcard_fieldname);
 704 }
 705
 706 /*
 707 =============
 708 PRVM_ED_PrintEdicts_f
 709
 710 For debugging, prints all the entities in the current server
 711 =============
 712 */
 713 void PRVM_ED_PrintEdicts_f (void)
 714 {
 715         int             i;
 716         const char *wildcard_fieldname;
 717
 718         if(Cmd_Argc() < 2 || Cmd_Argc() > 3)
 719         {
 720                 Con_Print("prvm_edicts <program name> <optional field name wildcard>\n");
 721                 return;
 722         }
 723
 724         PRVM_Begin;
 725         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 726                 return;
 727
 728         if( Cmd_Argc() == 3)
 729                 wildcard_fieldname = Cmd_Argv(2);
 730         else
 731                 wildcard_fieldname = NULL;
 732
 733         Con_Printf("%s: %i entities\n", PRVM_NAME, prog->num_edicts);
 734         for (i=0 ; i<prog->num_edicts ; i++)
 735                 PRVM_ED_PrintNum (i, wildcard_fieldname);
 736
 737         PRVM_End;
 738 }
 739
 740 /*
 741 =============
 742 PRVM_ED_PrintEdict_f
 743
 744 For debugging, prints a single edict
 745 =============
 746 */
 747 void PRVM_ED_PrintEdict_f (void)
 748 {
 749         int             i;
 750         const char      *wildcard_fieldname;
 751
 752         if(Cmd_Argc() < 3 || Cmd_Argc() > 4)
 753         {
 754                 Con_Print("prvm_edict <program name> <edict number> <optional field name wildcard>\n");
 755                 return;
 756         }
 757
 758         PRVM_Begin;
 759         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 760                 return;
 761
 762         i = atoi (Cmd_Argv(2));
 763         if (i >= prog->num_edicts)
 764         {
 765                 Con_Print("Bad edict number\n");
 766                 PRVM_End;
 767                 return;
 768         }
 769         if( Cmd_Argc() == 4)
 770                 // Optional Wildcard Provided
 771                 wildcard_fieldname = Cmd_Argv(3);
 772         else
 773                 // Use All
 774                 wildcard_fieldname = NULL;
 775         PRVM_ED_PrintNum (i, wildcard_fieldname);
 776
 777         PRVM_End;
 778 }
 779
 780 /*
 781 =============
 782 PRVM_ED_Count
 783
 784 For debugging
 785 =============
 786 */
 787 // 2 possibilities : 1. just displaying the active edict count
 788 //                                       2. making a function pointer [x]
 789 void PRVM_ED_Count_f (void)
 790 {
 791         int             i;
 792         prvm_edict_t    *ent;
 793         int             active;
 794
 795         if(Cmd_Argc() != 2)
 796         {
 797                 Con_Print("prvm_count <program name>\n");
 798                 return;
 799         }
 800
 801         PRVM_Begin;
 802         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 803                 return;
 804
 805         if(prog->count_edicts)
 806                 prog->count_edicts();
 807         else
 808         {
 809                 active = 0;
 810                 for (i=0 ; i<prog->num_edicts ; i++)
 811                 {
 812                         ent = PRVM_EDICT_NUM(i);
 813                         if (ent->priv.required->free)
 814                                 continue;
 815                         active++;
 816                 }
 817
 818                 Con_Printf("num_edicts:%3i\n", prog->num_edicts);
 819                 Con_Printf("active    :%3i\n", active);
 820         }
 821
 822         PRVM_End;
 823 }
 824
 825 /*
 826 ==============================================================================
 827
 828                                         ARCHIVING GLOBALS
 829
 830 FIXME: need to tag constants, doesn't really work
 831 ==============================================================================
 832 */
 833
 834 /*
 835 =============
 836 PRVM_ED_WriteGlobals
 837 =============
 838 */
 839 void PRVM_ED_WriteGlobals (qfile_t *f)
 840 {
 841         ddef_t          *def;
 842         int                     i;
 843         const char              *name;
 844         int                     type;
 845
 846         FS_Print(f,"{\n");
 847         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
 848         {
 849                 def = &prog->globaldefs[i];
 850                 type = def->type;
 851                 if ( !(def->type & DEF_SAVEGLOBAL) )
 852                         continue;
 853                 type &= ~DEF_SAVEGLOBAL;
 854
 855                 if (type != ev_string && type != ev_float && type != ev_entity)
 856                         continue;
 857
 858                 name = PRVM_GetString(def->s_name);
 859                 FS_Printf(f,"\"%s\" ", name);
 860                 FS_Printf(f,"\"%s\"\n", PRVM_UglyValueString((etype_t)type, (prvm_eval_t *)&prog->globals.generic[def->ofs]));
 861         }
 862         FS_Print(f,"}\n");
 863 }
 864
 865 /*
 866 =============
 867 PRVM_ED_ParseGlobals
 868 =============
 869 */
 870 void PRVM_ED_ParseGlobals (const char *data)
 871 {
 872         char keyname[MAX_INPUTLINE];
 873         ddef_t *key;
 874
 875         while (1)
 876         {
 877                 // parse key
 878                 if (!COM_ParseToken_Simple(&data, false, false))
 879                         PRVM_ERROR ("PRVM_ED_ParseGlobals: EOF without closing brace");
 880                 if (com_token[0] == '}')
 881                         break;
 882
 883                 strlcpy (keyname, com_token, sizeof(keyname));
 884
 885                 // parse value
 886                 if (!COM_ParseToken_Simple(&data, false, true))
 887                         PRVM_ERROR ("PRVM_ED_ParseGlobals: EOF without closing brace");
 888
 889                 if (com_token[0] == '}')
 890                         PRVM_ERROR ("PRVM_ED_ParseGlobals: closing brace without data");
 891
 892                 key = PRVM_ED_FindGlobal (keyname);
 893                 if (!key)
 894                 {
 895                         Con_DPrintf("'%s' is not a global on %s\n", keyname, PRVM_NAME);
 896                         continue;
 897                 }
 898
 899                 if (!PRVM_ED_ParseEpair(NULL, key, com_token))
 900                         PRVM_ERROR ("PRVM_ED_ParseGlobals: parse error");
 901         }
 902 }
 903
 904 //============================================================================
 905
 906
 907 /*
 908 =============
 909 PRVM_ED_ParseEval
 910
 911 Can parse either fields or globals
 912 returns false if error
 913 =============
 914 */
 915 qboolean PRVM_ED_ParseEpair(prvm_edict_t *ent, ddef_t *key, const char *s)
 916 {
 917         int i, l;
 918         char *new_p;
 919         ddef_t *def;
 920         prvm_eval_t *val;
 921         mfunction_t *func;
 922
 923         if (ent)
 924                 val = (prvm_eval_t *)((int *)ent->fields.vp + key->ofs);
 925         else
 926                 val = (prvm_eval_t *)((int *)prog->globals.generic + key->ofs);
 927         switch (key->type & ~DEF_SAVEGLOBAL)
 928         {
 929         case ev_string:
 930                 l = (int)strlen(s) + 1;
 931                 val->string = PRVM_AllocString(l, &new_p);
 932                 for (i = 0;i < l;i++)
 933                 {
 934                         if (s[i] == '\\' && i < l-1)
 935                         {
 936                                 i++;
 937                                 if (s[i] == 'n')
 938                                         *new_p++ = '\n';
 939                                 else if (s[i] == 'r')
 940                                         *new_p++ = '\r';
 941                                 else
 942                                         *new_p++ = s[i];
 943                         }
 944                         else
 945                                 *new_p++ = s[i];
 946                 }
 947                 break;
 948
 949         case ev_float:
 950                 while (*s && *s <= ' ')
 951                         s++;
 952                 val->_float = atof(s);
 953                 break;
 954
 955         case ev_vector:
 956                 for (i = 0;i < 3;i++)
 957                 {
 958                         while (*s && *s <= ' ')
 959                                 s++;
 960                         if (!*s)
 961                                 break;
 962                         val->vector[i] = atof(s);
 963                         while (*s > ' ')
 964                                 s++;
 965                         if (!*s)
 966                                 break;
 967                 }
 968                 break;
 969
 970         case ev_entity:
 971                 while (*s && *s <= ' ')
 972                         s++;
 973                 i = atoi(s);
 974                 if (i >= prog->limit_edicts)
 975                         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);
 976                 while (i >= prog->max_edicts)
 977                         PRVM_MEM_IncreaseEdicts();
 978                 // if IncreaseEdicts was called the base pointer needs to be updated
 979                 if (ent)
 980                         val = (prvm_eval_t *)((int *)ent->fields.vp + key->ofs);
 981                 val->edict = PRVM_EDICT_TO_PROG(PRVM_EDICT_NUM((int)i));
 982                 break;
 983
 984         case ev_field:
 985                 if (*s != '.')
 986                 {
 987                         Con_DPrintf("PRVM_ED_ParseEpair: Bogus field name %s in %s\n", s, PRVM_NAME);
 988                         return false;
 989                 }
 990                 def = PRVM_ED_FindField(s + 1);
 991                 if (!def)
 992                 {
 993                         Con_DPrintf("PRVM_ED_ParseEpair: Can't find field %s in %s\n", s, PRVM_NAME);
 994                         return false;
 995                 }
 996                 val->_int = def->ofs;
 997                 break;
 998
 999         case ev_function:
1000                 func = PRVM_ED_FindFunction(s);
1001                 if (!func)
1002                 {
1003                         Con_Printf("PRVM_ED_ParseEpair: Can't find function %s in %s\n", s, PRVM_NAME);
1004                         return false;
1005                 }
1006                 val->function = func - prog->functions;
1007                 break;
1008
1009         default:
1010                 Con_Printf("PRVM_ED_ParseEpair: Unknown key->type %i for key \"%s\" on %s\n", key->type, PRVM_GetString(key->s_name), PRVM_NAME);
1011                 return false;
1012         }
1013         return true;
1014 }
1015
1016 /*
1017 =============
1018 PRVM_GameCommand_f
1019
1020 Console command to send a string to QC function GameCommand of the
1021 indicated progs
1022
1023 Usage:
1024   sv_cmd adminmsg 3 "do not teamkill"
1025   cl_cmd someclientcommand
1026   menu_cmd somemenucommand
1027
1028 All progs can support this extension; sg calls it in server QC, cg in client
1029 QC, mg in menu QC.
1030 =============
1031 */
1032 void PRVM_GameCommand(const char *whichprogs, const char *whichcmd)
1033 {
1034         if(Cmd_Argc() < 1)
1035         {
1036                 Con_Printf("%s text...\n", whichcmd);
1037                 return;
1038         }
1039
1040         PRVM_Begin;
1041         if(!PRVM_SetProgFromString(whichprogs))
1042         // note: this is not PRVM_SetProg because that one aborts "hard" using PRVM_Error
1043         // also, it makes printing error messages easier!
1044         {
1045                 Con_Printf("%s program not loaded.\n", whichprogs);
1046                 return;
1047         }
1048
1049         if(!prog->funcoffsets.GameCommand)
1050         {
1051                 Con_Printf("%s program do not support GameCommand!\n", whichprogs);
1052         }
1053         else
1054         {
1055                 int restorevm_tempstringsbuf_cursize;
1056                 const char *s;
1057
1058                 s = Cmd_Args();
1059
1060                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
1061                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(s ? s : "");
1062                 PRVM_ExecuteProgram (prog->funcoffsets.GameCommand, "QC function GameCommand is missing");
1063                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
1064         }
1065
1066         PRVM_End;
1067 }
1068 void PRVM_GameCommand_Server_f(void)
1069 {
1070         PRVM_GameCommand("server", "sv_cmd");
1071 }
1072 void PRVM_GameCommand_Client_f(void)
1073 {
1074         PRVM_GameCommand("client", "cl_cmd");
1075 }
1076 void PRVM_GameCommand_Menu_f(void)
1077 {
1078         PRVM_GameCommand("menu", "menu_cmd");
1079 }
1080
1081 /*
1082 =============
1083 PRVM_ED_EdictSet_f
1084
1085 Console command to set a field of a specified edict
1086 =============
1087 */
1088 void PRVM_ED_EdictSet_f(void)
1089 {
1090         prvm_edict_t *ed;
1091         ddef_t *key;
1092
1093         if(Cmd_Argc() != 5)
1094         {
1095                 Con_Print("prvm_edictset <program name> <edict number> <field> <value>\n");
1096                 return;
1097         }
1098
1099         PRVM_Begin;
1100         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1101         {
1102                 Con_Printf("Wrong program name %s !\n", Cmd_Argv(1));
1103                 return;
1104         }
1105
1106         ed = PRVM_EDICT_NUM(atoi(Cmd_Argv(2)));
1107
1108         if((key = PRVM_ED_FindField(Cmd_Argv(3))) == 0)
1109                 Con_Printf("Key %s not found !\n", Cmd_Argv(3));
1110         else
1111                 PRVM_ED_ParseEpair(ed, key, Cmd_Argv(4));
1112
1113         PRVM_End;
1114 }
1115
1116 /*
1117 ====================
1118 PRVM_ED_ParseEdict
1119
1120 Parses an edict out of the given string, returning the new position
1121 ed should be a properly initialized empty edict.
1122 Used for initial level load and for savegames.
1123 ====================
1124 */
1125 extern cvar_t developer_entityparsing;
1126 const char *PRVM_ED_ParseEdict (const char *data, prvm_edict_t *ent)
1127 {
1128         ddef_t *key;
1129         qboolean anglehack;
1130         qboolean init;
1131         char keyname[256];
1132         size_t n;
1133
1134         init = false;
1135
1136 // go through all the dictionary pairs
1137         while (1)
1138         {
1139         // parse key
1140                 if (!COM_ParseToken_Simple(&data, false, false))
1141                         PRVM_ERROR ("PRVM_ED_ParseEdict: EOF without closing brace");
1142                 if (developer_entityparsing.integer)
1143                         Con_Printf("Key: \"%s\"", com_token);
1144                 if (com_token[0] == '}')
1145                         break;
1146
1147                 // anglehack is to allow QuakeEd to write single scalar angles
1148                 // and allow them to be turned into vectors. (FIXME...)
1149                 if (!strcmp(com_token, "angle"))
1150                 {
1151                         strlcpy (com_token, "angles", sizeof(com_token));
1152                         anglehack = true;
1153                 }
1154                 else
1155                         anglehack = false;
1156
1157                 // FIXME: change light to _light to get rid of this hack
1158                 if (!strcmp(com_token, "light"))
1159                         strlcpy (com_token, "light_lev", sizeof(com_token));    // hack for single light def
1160
1161                 strlcpy (keyname, com_token, sizeof(keyname));
1162
1163                 // another hack to fix keynames with trailing spaces
1164                 n = strlen(keyname);
1165                 while (n && keyname[n-1] == ' ')
1166                 {
1167                         keyname[n-1] = 0;
1168                         n--;
1169                 }
1170
1171         // parse value
1172                 if (!COM_ParseToken_Simple(&data, false, true))
1173                         PRVM_ERROR ("PRVM_ED_ParseEdict: EOF without closing brace");
1174                 if (developer_entityparsing.integer)
1175                         Con_Printf(" \"%s\"\n", com_token);
1176
1177                 if (com_token[0] == '}')
1178                         PRVM_ERROR ("PRVM_ED_ParseEdict: closing brace without data");
1179
1180                 init = true;
1181
1182                 // ignore attempts to set key "" (this problem occurs in nehahra neh1m8.bsp)
1183                 if (!keyname[0])
1184                         continue;
1185
1186 // keynames with a leading underscore are used for utility comments,
1187 // and are immediately discarded by quake
1188                 if (keyname[0] == '_')
1189                         continue;
1190
1191                 key = PRVM_ED_FindField (keyname);
1192                 if (!key)
1193                 {
1194                         Con_DPrintf("%s: '%s' is not a field\n", PRVM_NAME, keyname);
1195                         continue;
1196                 }
1197
1198                 if (anglehack)
1199                 {
1200                         char    temp[32];
1201                         strlcpy (temp, com_token, sizeof(temp));
1202                         sprintf (com_token, "0 %s 0", temp);
1203                 }
1204
1205                 if (!PRVM_ED_ParseEpair(ent, key, com_token))
1206                         PRVM_ERROR ("PRVM_ED_ParseEdict: parse error");
1207         }
1208
1209         if (!init)
1210                 ent->priv.required->free = true;
1211
1212         return data;
1213 }
1214
1215
1216 /*
1217 ================
1218 PRVM_ED_LoadFromFile
1219
1220 The entities are directly placed in the array, rather than allocated with
1221 PRVM_ED_Alloc, because otherwise an error loading the map would have entity
1222 number references out of order.
1223
1224 Creates a server's entity / program execution context by
1225 parsing textual entity definitions out of an ent file.
1226
1227 Used for both fresh maps and savegame loads.  A fresh map would also need
1228 to call PRVM_ED_CallSpawnFunctions () to let the objects initialize themselves.
1229 ================
1230 */
1231 void PRVM_ED_LoadFromFile (const char *data)
1232 {
1233         prvm_edict_t *ent;
1234         int parsed, inhibited, spawned, died;
1235         const char *funcname;
1236         mfunction_t *func;
1237
1238         parsed = 0;
1239         inhibited = 0;
1240         spawned = 0;
1241         died = 0;
1242
1243
1244 // parse ents
1245         while (1)
1246         {
1247 // parse the opening brace
1248                 if (!COM_ParseToken_Simple(&data, false, false))
1249                         break;
1250                 if (com_token[0] != '{')
1251                         PRVM_ERROR ("PRVM_ED_LoadFromFile: %s: found %s when expecting {", PRVM_NAME, com_token);
1252
1253                 // CHANGED: this is not conform to PR_LoadFromFile
1254                 if(prog->loadintoworld)
1255                 {
1256                         prog->loadintoworld = false;
1257                         ent = PRVM_EDICT_NUM(0);
1258                 }
1259                 else
1260                         ent = PRVM_ED_Alloc();
1261
1262                 // clear it
1263                 if (ent != prog->edicts)        // hack
1264                         memset (ent->fields.vp, 0, prog->progs->entityfields * 4);
1265
1266                 data = PRVM_ED_ParseEdict (data, ent);
1267                 parsed++;
1268
1269                 // remove the entity ?
1270                 if(prog->load_edict && !prog->load_edict(ent))
1271                 {
1272                         PRVM_ED_Free(ent);
1273                         inhibited++;
1274                         continue;
1275                 }
1276
1277 //
1278 // immediately call spawn function, but only if there is a self global and a classname
1279 //
1280                 if(prog->globaloffsets.self >= 0 && prog->fieldoffsets.classname >= 0)
1281                 {
1282                         string_t handle =  PRVM_EDICTFIELDVALUE(ent, prog->fieldoffsets.classname)->string;
1283                         if (!handle)
1284                         {
1285                                 Con_Print("No classname for:\n");
1286                                 PRVM_ED_Print(ent, NULL);
1287                                 PRVM_ED_Free (ent);
1288                                 continue;
1289                         }
1290
1291                         // look for the spawn function
1292                         funcname = PRVM_GetString(handle);
1293                         func = PRVM_ED_FindFunction (va("spawnfunc_%s", funcname));
1294                         if(!func)
1295                                 func = PRVM_ED_FindFunction (funcname);
1296
1297                         if (!func)
1298                         {
1299                                 // check for OnEntityNoSpawnFunction
1300                                 if (prog->funcoffsets.SV_OnEntityNoSpawnFunction)
1301                                 {
1302                                         // self = ent
1303                                         PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict = PRVM_EDICT_TO_PROG(ent);
1304                                         PRVM_ExecuteProgram (prog->funcoffsets.SV_OnEntityNoSpawnFunction, "QC function SV_OnEntityNoSpawnFunction is missing");
1305                                 }
1306                                 else
1307                                 {
1308                                         if (developer.integer) // don't confuse non-developers with errors
1309                                         {
1310                                                 Con_Print("No spawn function for:\n");
1311                                                 PRVM_ED_Print(ent, NULL);
1312                                         }
1313                                         PRVM_ED_Free (ent);
1314                                         continue;
1315                                 }
1316                         }
1317                         else
1318                         {
1319                                 // self = ent
1320                                 PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict = PRVM_EDICT_TO_PROG(ent);
1321                                 PRVM_ExecuteProgram (func - prog->functions, "");
1322                         }
1323                 }
1324
1325                 spawned++;
1326                 if (ent->priv.required->free)
1327                         died++;
1328         }
1329
1330         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);
1331 }
1332
1333 void PRVM_FindOffsets(void)
1334 {
1335         // field and global searches use -1 for NULL
1336         memset(&prog->fieldoffsets, -1, sizeof(prog->fieldoffsets));
1337         memset(&prog->globaloffsets, -1, sizeof(prog->globaloffsets));
1338         // functions use 0 for NULL
1339         memset(&prog->funcoffsets, 0, sizeof(prog->funcoffsets));
1340
1341         // server and client qc use a lot of similar fields, so this is combined
1342         prog->fieldoffsets.SendEntity                     = PRVM_ED_FindFieldOffset("SendEntity");
1343         prog->fieldoffsets.Version                        = PRVM_ED_FindFieldOffset("Version");
1344         prog->fieldoffsets.alpha                          = PRVM_ED_FindFieldOffset("alpha");
1345         prog->fieldoffsets.ammo_cells1                    = PRVM_ED_FindFieldOffset("ammo_cells1");
1346         prog->fieldoffsets.ammo_lava_nails                = PRVM_ED_FindFieldOffset("ammo_lava_nails");
1347         prog->fieldoffsets.ammo_multi_rockets             = PRVM_ED_FindFieldOffset("ammo_multi_rockets");
1348         prog->fieldoffsets.ammo_nails1                    = PRVM_ED_FindFieldOffset("ammo_nails1");
1349         prog->fieldoffsets.ammo_plasma                    = PRVM_ED_FindFieldOffset("ammo_plasma");
1350         prog->fieldoffsets.ammo_rockets1                  = PRVM_ED_FindFieldOffset("ammo_rockets1");
1351         prog->fieldoffsets.ammo_shells1                   = PRVM_ED_FindFieldOffset("ammo_shells1");
1352         prog->fieldoffsets.angles                         = PRVM_ED_FindFieldOffset("angles");
1353         prog->fieldoffsets.button3                        = PRVM_ED_FindFieldOffset("button3");
1354         prog->fieldoffsets.button4                        = PRVM_ED_FindFieldOffset("button4");
1355         prog->fieldoffsets.button5                        = PRVM_ED_FindFieldOffset("button5");
1356         prog->fieldoffsets.button6                        = PRVM_ED_FindFieldOffset("button6");
1357         prog->fieldoffsets.button7                        = PRVM_ED_FindFieldOffset("button7");
1358         prog->fieldoffsets.button8                        = PRVM_ED_FindFieldOffset("button8");
1359         prog->fieldoffsets.button9                        = PRVM_ED_FindFieldOffset("button9");
1360         prog->fieldoffsets.button10                       = PRVM_ED_FindFieldOffset("button10");
1361         prog->fieldoffsets.button11                       = PRVM_ED_FindFieldOffset("button11");
1362         prog->fieldoffsets.button12                       = PRVM_ED_FindFieldOffset("button12");
1363         prog->fieldoffsets.button13                       = PRVM_ED_FindFieldOffset("button13");
1364         prog->fieldoffsets.button14                       = PRVM_ED_FindFieldOffset("button14");
1365         prog->fieldoffsets.button15                       = PRVM_ED_FindFieldOffset("button15");
1366         prog->fieldoffsets.button16                       = PRVM_ED_FindFieldOffset("button16");
1367         prog->fieldoffsets.buttonchat                     = PRVM_ED_FindFieldOffset("buttonchat");
1368         prog->fieldoffsets.buttonuse                      = PRVM_ED_FindFieldOffset("buttonuse");
1369         prog->fieldoffsets.chain                          = PRVM_ED_FindFieldOffset("chain");
1370         prog->fieldoffsets.classname                      = PRVM_ED_FindFieldOffset("classname");
1371         prog->fieldoffsets.clientcolors                   = PRVM_ED_FindFieldOffset("clientcolors");
1372         prog->fieldoffsets.color                          = PRVM_ED_FindFieldOffset("color");
1373         prog->fieldoffsets.colormod                       = PRVM_ED_FindFieldOffset("colormod");
1374         prog->fieldoffsets.contentstransition             = PRVM_ED_FindFieldOffset("contentstransition");
1375         prog->fieldoffsets.cursor_active                  = PRVM_ED_FindFieldOffset("cursor_active");
1376         prog->fieldoffsets.cursor_screen                  = PRVM_ED_FindFieldOffset("cursor_screen");
1377         prog->fieldoffsets.cursor_trace_endpos            = PRVM_ED_FindFieldOffset("cursor_trace_endpos");
1378         prog->fieldoffsets.cursor_trace_ent               = PRVM_ED_FindFieldOffset("cursor_trace_ent");
1379         prog->fieldoffsets.cursor_trace_start             = PRVM_ED_FindFieldOffset("cursor_trace_start");
1380         prog->fieldoffsets.customizeentityforclient       = PRVM_ED_FindFieldOffset("customizeentityforclient");
1381         prog->fieldoffsets.dimension_hit                  = PRVM_ED_FindFieldOffset("dimension_hit");
1382         prog->fieldoffsets.dimension_solid                = PRVM_ED_FindFieldOffset("dimension_solid");
1383         prog->fieldoffsets.disableclientprediction        = PRVM_ED_FindFieldOffset("disableclientprediction");
1384         prog->fieldoffsets.dphitcontentsmask              = PRVM_ED_FindFieldOffset("dphitcontentsmask");
1385         prog->fieldoffsets.drawonlytoclient               = PRVM_ED_FindFieldOffset("drawonlytoclient");
1386         prog->fieldoffsets.exteriormodeltoclient          = PRVM_ED_FindFieldOffset("exteriormodeltoclient");
1387         prog->fieldoffsets.fatness                        = PRVM_ED_FindFieldOffset("fatness");
1388         prog->fieldoffsets.forceshader                    = PRVM_ED_FindFieldOffset("forceshader");
1389         prog->fieldoffsets.frame                          = PRVM_ED_FindFieldOffset("frame");
1390         prog->fieldoffsets.frame1time                     = PRVM_ED_FindFieldOffset("frame1time");
1391         prog->fieldoffsets.frame2                         = PRVM_ED_FindFieldOffset("frame2");
1392         prog->fieldoffsets.frame2time                     = PRVM_ED_FindFieldOffset("frame2time");
1393         prog->fieldoffsets.fullbright                     = PRVM_ED_FindFieldOffset("fullbright");
1394         prog->fieldoffsets.glow_color                     = PRVM_ED_FindFieldOffset("glow_color");
1395         prog->fieldoffsets.glow_size                      = PRVM_ED_FindFieldOffset("glow_size");
1396         prog->fieldoffsets.glow_trail                     = PRVM_ED_FindFieldOffset("glow_trail");
1397         prog->fieldoffsets.gravity                        = PRVM_ED_FindFieldOffset("gravity");
1398         prog->fieldoffsets.groundentity                   = PRVM_ED_FindFieldOffset("groundentity");
1399         prog->fieldoffsets.hull                           = PRVM_ED_FindFieldOffset("hull");
1400         prog->fieldoffsets.ideal_yaw                      = PRVM_ED_FindFieldOffset("ideal_yaw");
1401         prog->fieldoffsets.idealpitch                     = PRVM_ED_FindFieldOffset("idealpitch");
1402         prog->fieldoffsets.items2                         = PRVM_ED_FindFieldOffset("items2");
1403         prog->fieldoffsets.lerpfrac                       = PRVM_ED_FindFieldOffset("lerpfrac");
1404         prog->fieldoffsets.light_lev                      = PRVM_ED_FindFieldOffset("light_lev");
1405         prog->fieldoffsets.message                        = PRVM_ED_FindFieldOffset("message");
1406         prog->fieldoffsets.modelflags                     = PRVM_ED_FindFieldOffset("modelflags");
1407         prog->fieldoffsets.movement                       = PRVM_ED_FindFieldOffset("movement");
1408         prog->fieldoffsets.netaddress                     = PRVM_ED_FindFieldOffset("netaddress");
1409         prog->fieldoffsets.nextthink                      = PRVM_ED_FindFieldOffset("nextthink");
1410         prog->fieldoffsets.nodrawtoclient                 = PRVM_ED_FindFieldOffset("nodrawtoclient");
1411         prog->fieldoffsets.pflags                         = PRVM_ED_FindFieldOffset("pflags");
1412         prog->fieldoffsets.ping                           = PRVM_ED_FindFieldOffset("ping");
1413         prog->fieldoffsets.pitch_speed                    = PRVM_ED_FindFieldOffset("pitch_speed");
1414         prog->fieldoffsets.playermodel                    = PRVM_ED_FindFieldOffset("playermodel");
1415         prog->fieldoffsets.playerskin                     = PRVM_ED_FindFieldOffset("playerskin");
1416         prog->fieldoffsets.pmodel                         = PRVM_ED_FindFieldOffset("pmodel");
1417         prog->fieldoffsets.punchvector                    = PRVM_ED_FindFieldOffset("punchvector");
1418         prog->fieldoffsets.renderamt                      = PRVM_ED_FindFieldOffset("renderamt"); // HalfLife support
1419         prog->fieldoffsets.renderflags                    = PRVM_ED_FindFieldOffset("renderflags");
1420         prog->fieldoffsets.rendermode                     = PRVM_ED_FindFieldOffset("rendermode"); // HalfLife support
1421         prog->fieldoffsets.scale                          = PRVM_ED_FindFieldOffset("scale");
1422         prog->fieldoffsets.style                          = PRVM_ED_FindFieldOffset("style");
1423         prog->fieldoffsets.tag_entity                     = PRVM_ED_FindFieldOffset("tag_entity");
1424         prog->fieldoffsets.tag_index                      = PRVM_ED_FindFieldOffset("tag_index");
1425         prog->fieldoffsets.think                          = PRVM_ED_FindFieldOffset("think");
1426         prog->fieldoffsets.viewmodelforclient             = PRVM_ED_FindFieldOffset("viewmodelforclient");
1427         prog->fieldoffsets.viewzoom                       = PRVM_ED_FindFieldOffset("viewzoom");
1428         prog->fieldoffsets.yaw_speed                      = PRVM_ED_FindFieldOffset("yaw_speed");
1429         prog->fieldoffsets.clientcamera                   = PRVM_ED_FindFieldOffset("clientcamera");
1430         prog->funcoffsets.CSQC_ConsoleCommand             = PRVM_ED_FindFunctionOffset("CSQC_ConsoleCommand");
1431         prog->funcoffsets.CSQC_Ent_Remove                 = PRVM_ED_FindFunctionOffset("CSQC_Ent_Remove");
1432         prog->funcoffsets.CSQC_Ent_Update                 = PRVM_ED_FindFunctionOffset("CSQC_Ent_Update");
1433         prog->funcoffsets.CSQC_Ent_Spawn                  = PRVM_ED_FindFunctionOffset("CSQC_Ent_Spawn");
1434         prog->funcoffsets.CSQC_Event                      = PRVM_ED_FindFunctionOffset("CSQC_Event");
1435         prog->funcoffsets.CSQC_Event_Sound                = PRVM_ED_FindFunctionOffset("CSQC_Event_Sound");
1436         prog->funcoffsets.CSQC_Init                       = PRVM_ED_FindFunctionOffset("CSQC_Init");
1437         prog->funcoffsets.CSQC_InputEvent                 = PRVM_ED_FindFunctionOffset("CSQC_InputEvent");
1438         prog->funcoffsets.CSQC_Parse_CenterPrint          = PRVM_ED_FindFunctionOffset("CSQC_Parse_CenterPrint");
1439         prog->funcoffsets.CSQC_Parse_Print                = PRVM_ED_FindFunctionOffset("CSQC_Parse_Print");
1440         prog->funcoffsets.CSQC_Parse_StuffCmd             = PRVM_ED_FindFunctionOffset("CSQC_Parse_StuffCmd");
1441         prog->funcoffsets.CSQC_Parse_TempEntity           = PRVM_ED_FindFunctionOffset("CSQC_Parse_TempEntity");
1442         prog->funcoffsets.CSQC_Shutdown                   = PRVM_ED_FindFunctionOffset("CSQC_Shutdown");
1443         prog->funcoffsets.CSQC_UpdateView                 = PRVM_ED_FindFunctionOffset("CSQC_UpdateView");
1444         prog->funcoffsets.Gecko_Query                     = PRVM_ED_FindFunctionOffset("Gecko_Query");
1445         prog->funcoffsets.EndFrame                        = PRVM_ED_FindFunctionOffset("EndFrame");
1446         prog->funcoffsets.RestoreGame                     = PRVM_ED_FindFunctionOffset("RestoreGame");
1447         prog->funcoffsets.SV_ChangeTeam                   = PRVM_ED_FindFunctionOffset("SV_ChangeTeam");
1448         prog->funcoffsets.SV_ParseClientCommand           = PRVM_ED_FindFunctionOffset("SV_ParseClientCommand");
1449         prog->funcoffsets.SV_PlayerPhysics                = PRVM_ED_FindFunctionOffset("SV_PlayerPhysics");
1450         prog->funcoffsets.SV_OnEntityNoSpawnFunction      = PRVM_ED_FindFunctionOffset("SV_OnEntityNoSpawnFunction");
1451         prog->funcoffsets.GameCommand                     = PRVM_ED_FindFunctionOffset("GameCommand");
1452         prog->funcoffsets.SV_Shutdown                     = PRVM_ED_FindFunctionOffset("SV_Shutdown");
1453         prog->globaloffsets.SV_InitCmd                    = PRVM_ED_FindGlobalOffset("SV_InitCmd");
1454         prog->globaloffsets.self                          = PRVM_ED_FindGlobalOffset("self");
1455         prog->globaloffsets.time                          = PRVM_ED_FindGlobalOffset("time");
1456         prog->globaloffsets.v_forward                     = PRVM_ED_FindGlobalOffset("v_forward");
1457         prog->globaloffsets.v_right                       = PRVM_ED_FindGlobalOffset("v_right");
1458         prog->globaloffsets.v_up                          = PRVM_ED_FindGlobalOffset("v_up");
1459         prog->globaloffsets.view_angles                   = PRVM_ED_FindGlobalOffset("view_angles");
1460         prog->globaloffsets.trace_allsolid                = PRVM_ED_FindGlobalOffset("trace_allsolid");
1461         prog->globaloffsets.trace_startsolid              = PRVM_ED_FindGlobalOffset("trace_startsolid");
1462         prog->globaloffsets.trace_fraction                = PRVM_ED_FindGlobalOffset("trace_fraction");
1463         prog->globaloffsets.trace_inwater                 = PRVM_ED_FindGlobalOffset("trace_inwater");
1464         prog->globaloffsets.trace_inopen                  = PRVM_ED_FindGlobalOffset("trace_inopen");
1465         prog->globaloffsets.trace_endpos                  = PRVM_ED_FindGlobalOffset("trace_endpos");
1466         prog->globaloffsets.trace_plane_normal            = PRVM_ED_FindGlobalOffset("trace_plane_normal");
1467         prog->globaloffsets.trace_plane_dist              = PRVM_ED_FindGlobalOffset("trace_plane_dist");
1468         prog->globaloffsets.trace_ent                     = PRVM_ED_FindGlobalOffset("trace_ent");
1469         prog->globaloffsets.trace_dphitcontents           = PRVM_ED_FindGlobalOffset("trace_dphitcontents");
1470         prog->globaloffsets.trace_dphitq3surfaceflags     = PRVM_ED_FindGlobalOffset("trace_dphitq3surfaceflags");
1471         prog->globaloffsets.trace_dphittexturename        = PRVM_ED_FindGlobalOffset("trace_dphittexturename");
1472         prog->globaloffsets.trace_dpstartcontents         = PRVM_ED_FindGlobalOffset("trace_dpstartcontents");
1473         prog->globaloffsets.intermission                  = PRVM_ED_FindGlobalOffset("intermission");
1474         prog->globaloffsets.coop                          = PRVM_ED_FindGlobalOffset("coop");
1475         prog->globaloffsets.deathmatch                    = PRVM_ED_FindGlobalOffset("deathmatch");
1476         prog->globaloffsets.dmg_take                      = PRVM_ED_FindGlobalOffset("dmg_take");
1477         prog->globaloffsets.dmg_save                      = PRVM_ED_FindGlobalOffset("dmg_save");
1478         prog->globaloffsets.dmg_origin                    = PRVM_ED_FindGlobalOffset("dmg_origin");
1479         prog->globaloffsets.sb_showscores                 = PRVM_ED_FindGlobalOffset("sb_showscores");
1480         prog->globaloffsets.drawfont                      = PRVM_ED_FindGlobalOffset("drawfont");
1481
1482         // menu qc only uses some functions, nothing else
1483         prog->funcoffsets.m_draw                          = PRVM_ED_FindFunctionOffset("m_draw");
1484         prog->funcoffsets.m_init                          = PRVM_ED_FindFunctionOffset("m_init");
1485         prog->funcoffsets.m_keydown                       = PRVM_ED_FindFunctionOffset("m_keydown");
1486         prog->funcoffsets.m_keyup                         = PRVM_ED_FindFunctionOffset("m_keyup");
1487         prog->funcoffsets.m_shutdown                      = PRVM_ED_FindFunctionOffset("m_shutdown");
1488         prog->funcoffsets.m_toggle                        = PRVM_ED_FindFunctionOffset("m_toggle");
1489 }
1490
1491 // not used
1492 /*
1493 typedef struct dpfield_s
1494 {
1495         int type;
1496         char *string;
1497 }
1498 dpfield_t;
1499
1500 #define DPFIELDS (sizeof(dpfields) / sizeof(dpfield_t))
1501
1502 dpfield_t dpfields[] =
1503 {
1504 };
1505 */
1506
1507 /*
1508 ===============
1509 PRVM_ResetProg
1510 ===============
1511 */
1512
1513 void PRVM_ResetProg()
1514 {
1515         PRVM_GCALL(reset_cmd)();
1516         Mem_FreePool(&prog->progs_mempool);
1517         memset(prog,0,sizeof(prvm_prog_t));
1518         prog->starttime = Sys_DoubleTime();
1519 }
1520
1521 /*
1522 ===============
1523 PRVM_LoadLNO
1524 ===============
1525 */
1526 void PRVM_LoadLNO( const char *progname ) {
1527         fs_offset_t filesize;
1528         unsigned char *lno;
1529         unsigned int *header;
1530         char filename[512];
1531
1532         FS_StripExtension( progname, filename, sizeof( filename ) );
1533         strlcat( filename, ".lno", sizeof( filename ) );
1534
1535         lno = FS_LoadFile( filename, tempmempool, false, &filesize );
1536         if( !lno ) {
1537                 return;
1538         }
1539
1540 /*
1541 <Spike>    SafeWrite (h, &lnotype, sizeof(int));
1542 <Spike>    SafeWrite (h, &version, sizeof(int));
1543 <Spike>    SafeWrite (h, &numglobaldefs, sizeof(int));
1544 <Spike>    SafeWrite (h, &numpr_globals, sizeof(int));
1545 <Spike>    SafeWrite (h, &numfielddefs, sizeof(int));
1546 <Spike>    SafeWrite (h, &numstatements, sizeof(int));
1547 <Spike>    SafeWrite (h, statement_linenums, numstatements*sizeof(int));
1548 */
1549         if( (unsigned) filesize < (6 + prog->progs->numstatements) * sizeof( int ) ) {
1550                 Mem_Free(lno);
1551                 return;
1552         }
1553
1554         header = (unsigned int *) lno;
1555         if( header[ 0 ] == *(unsigned int *) "LNOF" &&
1556                 LittleLong( header[ 1 ] ) == 1 &&
1557                 (unsigned int)LittleLong( header[ 2 ] ) == (unsigned int)prog->progs->numglobaldefs &&
1558                 (unsigned int)LittleLong( header[ 3 ] ) == (unsigned int)prog->progs->numglobals &&
1559                 (unsigned int)LittleLong( header[ 4 ] ) == (unsigned int)prog->progs->numfielddefs &&
1560                 (unsigned int)LittleLong( header[ 5 ] ) == (unsigned int)prog->progs->numstatements )
1561         {
1562                 prog->statement_linenums = (int *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof( int ) );
1563                 memcpy( prog->statement_linenums, (int *) lno + 6, prog->progs->numstatements * sizeof( int ) );
1564         }
1565         Mem_Free( lno );
1566 }
1567
1568 /*
1569 ===============
1570 PRVM_LoadProgs
1571 ===============
1572 */
1573 void PRVM_LoadProgs (const char * filename, int numrequiredfunc, char **required_func, int numrequiredfields, prvm_required_field_t *required_field, int numrequiredglobals, char **required_global)
1574 {
1575         int i;
1576         dstatement_t *st;
1577         ddef_t *infielddefs;
1578         dfunction_t *dfunctions;
1579         fs_offset_t filesize;
1580
1581         if( prog->loaded ) {
1582                 PRVM_ERROR ("PRVM_LoadProgs: there is already a %s program loaded!", PRVM_NAME );
1583         }
1584
1585         prog->progs = (dprograms_t *)FS_LoadFile (filename, prog->progs_mempool, false, &filesize);
1586         if (prog->progs == NULL || filesize < (fs_offset_t)sizeof(dprograms_t))
1587                 PRVM_ERROR ("PRVM_LoadProgs: couldn't load %s for %s", filename, PRVM_NAME);
1588
1589         Con_DPrintf("%s programs occupy %iK.\n", PRVM_NAME, (int)(filesize/1024));
1590
1591         prog->filecrc = CRC_Block((unsigned char *)prog->progs, filesize);
1592
1593 // byte swap the header
1594         for (i = 0;i < (int) sizeof(*prog->progs) / 4;i++)
1595                 ((int *)prog->progs)[i] = LittleLong ( ((int *)prog->progs)[i] );
1596
1597         if (prog->progs->version != PROG_VERSION)
1598                 PRVM_ERROR ("%s: %s has wrong version number (%i should be %i)", PRVM_NAME, filename, prog->progs->version, PROG_VERSION);
1599         if (prog->progs->crc != prog->headercrc && prog->progs->crc != prog->headercrc2)
1600                 PRVM_ERROR ("%s: %s system vars have been modified (CRC of progs.dat systemvars %i != engine %i), progdefs.h is out of date", PRVM_NAME, filename, prog->progs->crc, prog->headercrc);
1601
1602         //prog->functions = (dfunction_t *)((unsigned char *)progs + progs->ofs_functions);
1603         dfunctions = (dfunction_t *)((unsigned char *)prog->progs + prog->progs->ofs_functions);
1604
1605         if (prog->progs->ofs_strings + prog->progs->numstrings >= (int)filesize)
1606                 PRVM_ERROR ("%s: %s strings go past end of file", PRVM_NAME, filename);
1607         prog->strings = (char *)prog->progs + prog->progs->ofs_strings;
1608         prog->stringssize = prog->progs->numstrings;
1609
1610         prog->numknownstrings = 0;
1611         prog->maxknownstrings = 0;
1612         prog->knownstrings = NULL;
1613         prog->knownstrings_freeable = NULL;
1614
1615         Mem_ExpandableArray_NewArray(&prog->stringbuffersarray, prog->progs_mempool, sizeof(prvm_stringbuffer_t), 64);
1616
1617         prog->globaldefs = (ddef_t *)((unsigned char *)prog->progs + prog->progs->ofs_globaldefs);
1618
1619         // we need to expand the fielddefs list to include all the engine fields,
1620         // so allocate a new place for it
1621         infielddefs = (ddef_t *)((unsigned char *)prog->progs + prog->progs->ofs_fielddefs);
1622         //                                                                                              ( + DPFIELDS                       )
1623         prog->fielddefs = (ddef_t *)Mem_Alloc(prog->progs_mempool, (prog->progs->numfielddefs + numrequiredfields) * sizeof(ddef_t));
1624
1625         prog->statements = (dstatement_t *)((unsigned char *)prog->progs + prog->progs->ofs_statements);
1626
1627         prog->statement_profile = (double *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof(*prog->statement_profile));
1628
1629         // moved edict_size calculation down below field adding code
1630
1631         //pr_global_struct = (globalvars_t *)((unsigned char *)progs + progs->ofs_globals);
1632         prog->globals.generic = (float *)((unsigned char *)prog->progs + prog->progs->ofs_globals);
1633
1634 // byte swap the lumps
1635         for (i=0 ; i<prog->progs->numstatements ; i++)
1636         {
1637                 prog->statements[i].op = LittleShort(prog->statements[i].op);
1638                 prog->statements[i].a = LittleShort(prog->statements[i].a);
1639                 prog->statements[i].b = LittleShort(prog->statements[i].b);
1640                 prog->statements[i].c = LittleShort(prog->statements[i].c);
1641         }
1642
1643         prog->functions = (mfunction_t *)Mem_Alloc(prog->progs_mempool, sizeof(mfunction_t) * prog->progs->numfunctions);
1644         for (i = 0;i < prog->progs->numfunctions;i++)
1645         {
1646                 prog->functions[i].first_statement = LittleLong (dfunctions[i].first_statement);
1647                 prog->functions[i].parm_start = LittleLong (dfunctions[i].parm_start);
1648                 prog->functions[i].s_name = LittleLong (dfunctions[i].s_name);
1649                 prog->functions[i].s_file = LittleLong (dfunctions[i].s_file);
1650                 prog->functions[i].numparms = LittleLong (dfunctions[i].numparms);
1651                 prog->functions[i].locals = LittleLong (dfunctions[i].locals);
1652                 memcpy(prog->functions[i].parm_size, dfunctions[i].parm_size, sizeof(dfunctions[i].parm_size));
1653         }
1654
1655         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
1656         {
1657                 prog->globaldefs[i].type = LittleShort (prog->globaldefs[i].type);
1658                 prog->globaldefs[i].ofs = LittleShort (prog->globaldefs[i].ofs);
1659                 prog->globaldefs[i].s_name = LittleLong (prog->globaldefs[i].s_name);
1660         }
1661
1662         // copy the progs fields to the new fields list
1663         for (i = 0;i < prog->progs->numfielddefs;i++)
1664         {
1665                 prog->fielddefs[i].type = LittleShort (infielddefs[i].type);
1666                 if (prog->fielddefs[i].type & DEF_SAVEGLOBAL)
1667                         PRVM_ERROR ("PRVM_LoadProgs: prog->fielddefs[i].type & DEF_SAVEGLOBAL in %s", PRVM_NAME);
1668                 prog->fielddefs[i].ofs = LittleShort (infielddefs[i].ofs);
1669                 prog->fielddefs[i].s_name = LittleLong (infielddefs[i].s_name);
1670         }
1671
1672         // append the required fields
1673         for (i = 0;i < (int) numrequiredfields;i++)
1674         {
1675                 prog->fielddefs[prog->progs->numfielddefs].type = required_field[i].type;
1676                 prog->fielddefs[prog->progs->numfielddefs].ofs = prog->progs->entityfields;
1677                 prog->fielddefs[prog->progs->numfielddefs].s_name = PRVM_SetEngineString(required_field[i].name);
1678                 if (prog->fielddefs[prog->progs->numfielddefs].type == ev_vector)
1679                         prog->progs->entityfields += 3;
1680                 else
1681                         prog->progs->entityfields++;
1682                 prog->progs->numfielddefs++;
1683         }
1684
1685         // check required functions
1686         for(i=0 ; i < numrequiredfunc ; i++)
1687                 if(PRVM_ED_FindFunction(required_func[i]) == 0)
1688                         PRVM_ERROR("%s: %s not found in %s",PRVM_NAME, required_func[i], filename);
1689
1690         // check required globals
1691         for(i=0 ; i < numrequiredglobals ; i++)
1692                 if(PRVM_ED_FindGlobal(required_global[i]) == 0)
1693                         PRVM_ERROR("%s: %s not found in %s",PRVM_NAME, required_global[i], filename);
1694
1695         for (i=0 ; i<prog->progs->numglobals ; i++)
1696                 ((int *)prog->globals.generic)[i] = LittleLong (((int *)prog->globals.generic)[i]);
1697
1698         // moved edict_size calculation down here, below field adding code
1699         // LordHavoc: this no longer includes the prvm_edict_t header
1700         prog->edict_size = prog->progs->entityfields * 4;
1701         prog->edictareasize = prog->edict_size * prog->limit_edicts;
1702
1703         // LordHavoc: bounds check anything static
1704         for (i = 0,st = prog->statements;i < prog->progs->numstatements;i++,st++)
1705         {
1706                 switch (st->op)
1707                 {
1708                 case OP_IF:
1709                 case OP_IFNOT:
1710                         if ((unsigned short) st->a >= prog->progs->numglobals || st->b + i < 0 || st->b + i >= prog->progs->numstatements)
1711                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds IF/IFNOT (statement %d) in %s", i, PRVM_NAME);
1712                         break;
1713                 case OP_GOTO:
1714                         if (st->a + i < 0 || st->a + i >= prog->progs->numstatements)
1715                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds GOTO (statement %d) in %s", i, PRVM_NAME);
1716                         break;
1717                 // global global global
1718                 case OP_ADD_F:
1719                 case OP_ADD_V:
1720                 case OP_SUB_F:
1721                 case OP_SUB_V:
1722                 case OP_MUL_F:
1723                 case OP_MUL_V:
1724                 case OP_MUL_FV:
1725                 case OP_MUL_VF:
1726                 case OP_DIV_F:
1727                 case OP_BITAND:
1728                 case OP_BITOR:
1729                 case OP_GE:
1730                 case OP_LE:
1731                 case OP_GT:
1732                 case OP_LT:
1733                 case OP_AND:
1734                 case OP_OR:
1735                 case OP_EQ_F:
1736                 case OP_EQ_V:
1737                 case OP_EQ_S:
1738                 case OP_EQ_E:
1739                 case OP_EQ_FNC:
1740                 case OP_NE_F:
1741                 case OP_NE_V:
1742                 case OP_NE_S:
1743                 case OP_NE_E:
1744                 case OP_NE_FNC:
1745                 case OP_ADDRESS:
1746                 case OP_LOAD_F:
1747                 case OP_LOAD_FLD:
1748                 case OP_LOAD_ENT:
1749                 case OP_LOAD_S:
1750                 case OP_LOAD_FNC:
1751                 case OP_LOAD_V:
1752                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1753                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d)", i);
1754                         break;
1755                 // global none global
1756                 case OP_NOT_F:
1757                 case OP_NOT_V:
1758                 case OP_NOT_S:
1759                 case OP_NOT_FNC:
1760                 case OP_NOT_ENT:
1761                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1762                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1763                         break;
1764                 // 2 globals
1765                 case OP_STOREP_F:
1766                 case OP_STOREP_ENT:
1767                 case OP_STOREP_FLD:
1768                 case OP_STOREP_S:
1769                 case OP_STOREP_FNC:
1770                 case OP_STORE_F:
1771                 case OP_STORE_ENT:
1772                 case OP_STORE_FLD:
1773                 case OP_STORE_S:
1774                 case OP_STORE_FNC:
1775                 case OP_STATE:
1776                 case OP_STOREP_V:
1777                 case OP_STORE_V:
1778                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals)
1779                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1780                         break;
1781                 // 1 global
1782                 case OP_CALL0:
1783                 case OP_CALL1:
1784                 case OP_CALL2:
1785                 case OP_CALL3:
1786                 case OP_CALL4:
1787                 case OP_CALL5:
1788                 case OP_CALL6:
1789                 case OP_CALL7:
1790                 case OP_CALL8:
1791                 case OP_DONE:
1792                 case OP_RETURN:
1793                         if ((unsigned short) st->a >= prog->progs->numglobals)
1794                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1795                         break;
1796                 default:
1797                         Con_DPrintf("PRVM_LoadProgs: unknown opcode %d at statement %d in %s\n", st->op, i, PRVM_NAME);
1798                         break;
1799                 }
1800         }
1801
1802         PRVM_LoadLNO(filename);
1803
1804         PRVM_Init_Exec();
1805
1806         prog->loaded = TRUE;
1807
1808         // set flags & ddef_ts in prog
1809
1810         prog->flag = 0;
1811
1812         PRVM_FindOffsets();
1813
1814         PRVM_GCALL(init_cmd)();
1815
1816         // init mempools
1817         PRVM_MEM_Alloc();
1818 }
1819
1820
1821 void PRVM_Fields_f (void)
1822 {
1823         int i, j, ednum, used, usedamount;
1824         int *counts;
1825         char tempstring[MAX_INPUTLINE], tempstring2[260];
1826         const char *name;
1827         prvm_edict_t *ed;
1828         ddef_t *d;
1829         int *v;
1830
1831         // TODO
1832         /*
1833         if (!sv.active)
1834         {
1835                 Con_Print("no progs loaded\n");
1836                 return;
1837         }
1838         */
1839
1840         if(Cmd_Argc() != 2)
1841         {
1842                 Con_Print("prvm_fields <program name>\n");
1843                 return;
1844         }
1845
1846         PRVM_Begin;
1847         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1848                 return;
1849
1850         counts = (int *)Mem_Alloc(tempmempool, prog->progs->numfielddefs * sizeof(int));
1851         for (ednum = 0;ednum < prog->max_edicts;ednum++)
1852         {
1853                 ed = PRVM_EDICT_NUM(ednum);
1854                 if (ed->priv.required->free)
1855                         continue;
1856                 for (i = 1;i < prog->progs->numfielddefs;i++)
1857                 {
1858                         d = &prog->fielddefs[i];
1859                         name = PRVM_GetString(d->s_name);
1860                         if (name[strlen(name)-2] == '_')
1861                                 continue;       // skip _x, _y, _z vars
1862                         v = (int *)((char *)ed->fields.vp + d->ofs*4);
1863                         // if the value is still all 0, skip the field
1864                         for (j = 0;j < prvm_type_size[d->type & ~DEF_SAVEGLOBAL];j++)
1865                         {
1866                                 if (v[j])
1867                                 {
1868                                         counts[i]++;
1869                                         break;
1870                                 }
1871                         }
1872                 }
1873         }
1874         used = 0;
1875         usedamount = 0;
1876         tempstring[0] = 0;
1877         for (i = 0;i < prog->progs->numfielddefs;i++)
1878         {
1879                 d = &prog->fielddefs[i];
1880                 name = PRVM_GetString(d->s_name);
1881                 if (name[strlen(name)-2] == '_')
1882                         continue;       // skip _x, _y, _z vars
1883                 switch(d->type & ~DEF_SAVEGLOBAL)
1884                 {
1885                 case ev_string:
1886                         strlcat(tempstring, "string   ", sizeof(tempstring));
1887                         break;
1888                 case ev_entity:
1889                         strlcat(tempstring, "entity   ", sizeof(tempstring));
1890                         break;
1891                 case ev_function:
1892                         strlcat(tempstring, "function ", sizeof(tempstring));
1893                         break;
1894                 case ev_field:
1895                         strlcat(tempstring, "field    ", sizeof(tempstring));
1896                         break;
1897                 case ev_void:
1898                         strlcat(tempstring, "void     ", sizeof(tempstring));
1899                         break;
1900                 case ev_float:
1901                         strlcat(tempstring, "float    ", sizeof(tempstring));
1902                         break;
1903                 case ev_vector:
1904                         strlcat(tempstring, "vector   ", sizeof(tempstring));
1905                         break;
1906                 case ev_pointer:
1907                         strlcat(tempstring, "pointer  ", sizeof(tempstring));
1908                         break;
1909                 default:
1910                         sprintf (tempstring2, "bad type %i ", d->type & ~DEF_SAVEGLOBAL);
1911                         strlcat(tempstring, tempstring2, sizeof(tempstring));
1912                         break;
1913                 }
1914                 if (strlen(name) > sizeof(tempstring2)-4)
1915                 {
1916                         memcpy (tempstring2, name, sizeof(tempstring2)-4);
1917                         tempstring2[sizeof(tempstring2)-4] = tempstring2[sizeof(tempstring2)-3] = tempstring2[sizeof(tempstring2)-2] = '.';
1918                         tempstring2[sizeof(tempstring2)-1] = 0;
1919                         name = tempstring2;
1920                 }
1921                 strlcat(tempstring, name, sizeof(tempstring));
1922                 for (j = (int)strlen(name);j < 25;j++)
1923                         strlcat(tempstring, " ", sizeof(tempstring));
1924                 sprintf(tempstring2, "%5d", counts[i]);
1925                 strlcat(tempstring, tempstring2, sizeof(tempstring));
1926                 strlcat(tempstring, "\n", sizeof(tempstring));
1927                 if (strlen(tempstring) >= sizeof(tempstring)/2)
1928                 {
1929                         Con_Print(tempstring);
1930                         tempstring[0] = 0;
1931                 }
1932                 if (counts[i])
1933                 {
1934                         used++;
1935                         usedamount += prvm_type_size[d->type & ~DEF_SAVEGLOBAL];
1936                 }
1937         }
1938         Mem_Free(counts);
1939         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);
1940
1941         PRVM_End;
1942 }
1943
1944 void PRVM_Globals_f (void)
1945 {
1946         int i;
1947         const char *wildcard;
1948         int numculled;
1949                 numculled = 0;
1950         // TODO
1951         /*if (!sv.active)
1952         {
1953                 Con_Print("no progs loaded\n");
1954                 return;
1955         }*/
1956         if(Cmd_Argc () < 2 || Cmd_Argc() > 3)
1957         {
1958                 Con_Print("prvm_globals <program name> <optional name wildcard>\n");
1959                 return;
1960         }
1961
1962         PRVM_Begin;
1963         if(!PRVM_SetProgFromString (Cmd_Argv (1)))
1964                 return;
1965
1966         if( Cmd_Argc() == 3)
1967                 wildcard = Cmd_Argv(2);
1968         else
1969                 wildcard = NULL;
1970
1971         Con_Printf("%s :", PRVM_NAME);
1972
1973         for (i = 0;i < prog->progs->numglobaldefs;i++)
1974         {
1975                 if(wildcard)
1976                         if( !matchpattern( PRVM_GetString(prog->globaldefs[i].s_name), wildcard, 1) )
1977                         {
1978                                 numculled++;
1979                                 continue;
1980                         }
1981                 Con_Printf("%s\n", PRVM_GetString(prog->globaldefs[i].s_name));
1982         }
1983         Con_Printf("%i global variables, %i culled, totalling %i bytes\n", prog->progs->numglobals, numculled, prog->progs->numglobals * 4);
1984
1985         PRVM_End;
1986 }
1987
1988 /*
1989 ===============
1990 PRVM_Global
1991 ===============
1992 */
1993 void PRVM_Global_f(void)
1994 {
1995         ddef_t *global;
1996         if( Cmd_Argc() != 3 ) {
1997                 Con_Printf( "prvm_global <program name> <global name>\n" );
1998                 return;
1999         }
2000
2001         PRVM_Begin;
2002         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
2003                 return;
2004
2005         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
2006         if( !global )
2007                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
2008         else
2009                 Con_Printf( "%s: %s\n", Cmd_Argv(2), PRVM_ValueString( (etype_t)global->type, (prvm_eval_t *) &prog->globals.generic[ global->ofs ] ) );
2010         PRVM_End;
2011 }
2012
2013 /*
2014 ===============
2015 PRVM_GlobalSet
2016 ===============
2017 */
2018 void PRVM_GlobalSet_f(void)
2019 {
2020         ddef_t *global;
2021         if( Cmd_Argc() != 4 ) {
2022                 Con_Printf( "prvm_globalset <program name> <global name> <value>\n" );
2023                 return;
2024         }
2025
2026         PRVM_Begin;
2027         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
2028                 return;
2029
2030         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
2031         if( !global )
2032                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
2033         else
2034                 PRVM_ED_ParseEpair( NULL, global, Cmd_Argv(3) );
2035         PRVM_End;
2036 }
2037
2038 /*
2039 ===============
2040 PRVM_Init
2041 ===============
2042 */
2043 void PRVM_Init (void)
2044 {
2045         Cmd_AddCommand ("prvm_edict", PRVM_ED_PrintEdict_f, "print all data about an entity number in the selected VM (server, client, menu)");
2046         Cmd_AddCommand ("prvm_edicts", PRVM_ED_PrintEdicts_f, "prints all data about all entities in the selected VM (server, client, menu)");
2047         Cmd_AddCommand ("prvm_edictcount", PRVM_ED_Count_f, "prints number of active entities in the selected VM (server, client, menu)");
2048         Cmd_AddCommand ("prvm_profile", PRVM_Profile_f, "prints execution statistics about the most used QuakeC functions in the selected VM (server, client, menu)");
2049         Cmd_AddCommand ("prvm_callprofile", PRVM_CallProfile_f, "prints execution statistics about the most time consuming QuakeC calls from the engine in the selected VM (server, client, menu)");
2050         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)");
2051         Cmd_AddCommand ("prvm_globals", PRVM_Globals_f, "prints all global variables in the selected VM (server, client, menu)");
2052         Cmd_AddCommand ("prvm_global", PRVM_Global_f, "prints value of a specified global variable in the selected VM (server, client, menu)");
2053         Cmd_AddCommand ("prvm_globalset", PRVM_GlobalSet_f, "sets value of a specified global variable in the selected VM (server, client, menu)");
2054         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)");
2055         Cmd_AddCommand ("prvm_printfunction", PRVM_PrintFunction_f, "prints a disassembly (QuakeC instructions) of the specified function in the selected VM (server, client, menu)");
2056         Cmd_AddCommand ("cl_cmd", PRVM_GameCommand_Client_f, "calls the client QC function GameCommand with the supplied string as argument");
2057         Cmd_AddCommand ("menu_cmd", PRVM_GameCommand_Menu_f, "calls the menu QC function GameCommand with the supplied string as argument");
2058         Cmd_AddCommand ("sv_cmd", PRVM_GameCommand_Server_f, "calls the server QC function GameCommand with the supplied string as argument");
2059         // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
2060 #ifdef PRVM_BOUNDSCHECK_CVAR
2061         Cvar_RegisterVariable (&prvm_boundscheck);
2062 #endif
2063         Cvar_RegisterVariable (&prvm_traceqc);
2064         Cvar_RegisterVariable (&prvm_statementprofiling);
2065         Cvar_RegisterVariable (&prvm_backtraceforwarnings);
2066
2067         //VM_Cmd_Init();
2068 }
2069
2070 /*
2071 ===============
2072 PRVM_InitProg
2073 ===============
2074 */
2075 void PRVM_InitProg(int prognr)
2076 {
2077         if(prognr < 0 || prognr >= PRVM_MAXPROGS)
2078                 Sys_Error("PRVM_InitProg: Invalid program number %i",prognr);
2079
2080         prog = &prog_list[prognr];
2081
2082         if(prog->loaded)
2083                 PRVM_ResetProg();
2084
2085         memset(prog, 0, sizeof(prvm_prog_t));
2086         prog->starttime = Sys_DoubleTime();
2087
2088         prog->error_cmd = Host_Error;
2089 }
2090
2091 int PRVM_GetProgNr()
2092 {
2093         return prog - prog_list;
2094 }
2095
2096 void *_PRVM_Alloc(size_t buffersize, const char *filename, int fileline)
2097 {
2098         return _Mem_Alloc(prog->progs_mempool, buffersize, filename, fileline);
2099 }
2100
2101 void _PRVM_Free(void *buffer, const char *filename, int fileline)
2102 {
2103         _Mem_Free(buffer, filename, fileline);
2104 }
2105
2106 void _PRVM_FreeAll(const char *filename, int fileline)
2107 {
2108         prog->progs = NULL;
2109         prog->fielddefs = NULL;
2110         prog->functions = NULL;
2111         _Mem_EmptyPool(prog->progs_mempool, filename, fileline);
2112 }
2113
2114 // LordHavoc: turned PRVM_EDICT_NUM into a #define for speed reasons
2115 unsigned int PRVM_EDICT_NUM_ERROR(unsigned int n, char *filename, int fileline)
2116 {
2117         PRVM_ERROR ("PRVM_EDICT_NUM: %s: bad number %i (called at %s:%i)", PRVM_NAME, n, filename, fileline);
2118         return 0;
2119 }
2120
2121 /*
2122 int NUM_FOR_EDICT_ERROR(prvm_edict_t *e)
2123 {
2124         PRVM_ERROR ("PRVM_NUM_FOR_EDICT: bad pointer %p (world is %p, entity number would be %i)", e, prog->edicts, e - prog->edicts);
2125         return 0;
2126 }
2127
2128 int PRVM_NUM_FOR_EDICT(prvm_edict_t *e)
2129 {
2130         int n;
2131         n = e - prog->edicts;
2132         if ((unsigned int)n >= prog->limit_edicts)
2133                 Host_Error ("PRVM_NUM_FOR_EDICT: bad pointer");
2134         return n;
2135 }
2136
2137 //int NoCrash_NUM_FOR_EDICT(prvm_edict_t *e)
2138 //{
2139 //      return e - prog->edicts;
2140 //}
2141
2142 //#define       PRVM_EDICT_TO_PROG(e) ((unsigned char *)(((prvm_edict_t *)e)->v) - (unsigned char *)(prog->edictsfields))
2143 //#define PRVM_PROG_TO_EDICT(e) (prog->edicts + ((e) / (progs->entityfields * 4)))
2144 int PRVM_EDICT_TO_PROG(prvm_edict_t *e)
2145 {
2146         int n;
2147         n = e - prog->edicts;
2148         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
2149                 Host_Error("PRVM_EDICT_TO_PROG: invalid edict %8p (number %i compared to world at %8p)", e, n, prog->edicts);
2150         return n;// EXPERIMENTAL
2151         //return (unsigned char *)e->v - (unsigned char *)prog->edictsfields;
2152 }
2153 prvm_edict_t *PRVM_PROG_TO_EDICT(int n)
2154 {
2155         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
2156                 Host_Error("PRVM_PROG_TO_EDICT: invalid edict number %i", n);
2157         return prog->edicts + n; // EXPERIMENTAL
2158         //return prog->edicts + ((n) / (progs->entityfields * 4));
2159 }
2160 */
2161
2162
2163 sizebuf_t vm_tempstringsbuf;
2164
2165 const char *PRVM_GetString(int num)
2166 {
2167         if (num >= 0)
2168         {
2169                 if (num < prog->stringssize)
2170                         return prog->strings + num;
2171                 else
2172 #if 1
2173                 if (num <= prog->stringssize + vm_tempstringsbuf.maxsize)
2174                 {
2175                         num -= prog->stringssize;
2176                         if (num < vm_tempstringsbuf.cursize)
2177                                 return (char *)vm_tempstringsbuf.data + num;
2178                         else
2179                         {
2180                                 VM_Warning("PRVM_GetString: Invalid temp-string offset (%i >= %i vm_tempstringsbuf.cursize)\n", num, vm_tempstringsbuf.cursize);
2181                                 return "";
2182                         }
2183                 }
2184                 else
2185 #endif
2186                 {
2187                         VM_Warning("PRVM_GetString: Invalid constant-string offset (%i >= %i prog->stringssize)\n", num, prog->stringssize);
2188                         return "";
2189                 }
2190         }
2191         else
2192         {
2193                 num = -1 - num;
2194 #if 0
2195                 if (num >= (1<<30))
2196                 {
2197                         // special range reserved for tempstrings
2198                         num -= (1<<30);
2199                         if (num < vm_tempstringsbuf.cursize)
2200                                 return (char *)vm_tempstringsbuf.data + num;
2201                         else
2202                         {
2203                                 VM_Warning("PRVM_GetString: Invalid temp-string offset (%i >= %i vm_tempstringsbuf.cursize)\n", num, vm_tempstringsbuf.cursize);
2204                                 return "";
2205                         }
2206                 }
2207                 else
2208 #endif
2209                 if (num < prog->numknownstrings)
2210                 {
2211                         if (!prog->knownstrings[num])
2212                                 VM_Warning("PRVM_GetString: Invalid zone-string offset (%i has been freed)\n", num);
2213                         return prog->knownstrings[num];
2214                 }
2215                 else
2216                 {
2217                         VM_Warning("PRVM_GetString: Invalid zone-string offset (%i >= %i)\n", num, prog->numknownstrings);
2218                         return "";
2219                 }
2220         }
2221 }
2222
2223 int PRVM_SetEngineString(const char *s)
2224 {
2225         int i;
2226         if (!s)
2227                 return 0;
2228         if (s >= prog->strings && s <= prog->strings + prog->stringssize)
2229                 PRVM_ERROR("PRVM_SetEngineString: s in prog->strings area");
2230         // if it's in the tempstrings area, use a reserved range
2231         // (otherwise we'd get millions of useless string offsets cluttering the database)
2232         if (s >= (char *)vm_tempstringsbuf.data && s < (char *)vm_tempstringsbuf.data + vm_tempstringsbuf.maxsize)
2233 #if 1
2234                 return prog->stringssize + (s - (char *)vm_tempstringsbuf.data);
2235 #else
2236                 return -1 - ((1<<30) + (s - (char *)vm_tempstringsbuf.data));
2237 #endif
2238         // see if it's a known string address
2239         for (i = 0;i < prog->numknownstrings;i++)
2240                 if (prog->knownstrings[i] == s)
2241                         return -1 - i;
2242         // new unknown engine string
2243         if (developer.integer >= 200)
2244                 Con_Printf("new engine string %p = \"%s\"\n", s, s);
2245         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
2246                 if (!prog->knownstrings[i])
2247                         break;
2248         if (i >= prog->numknownstrings)
2249         {
2250                 if (i >= prog->maxknownstrings)
2251                 {
2252                         const char **oldstrings = prog->knownstrings;
2253                         const unsigned char *oldstrings_freeable = prog->knownstrings_freeable;
2254                         prog->maxknownstrings += 128;
2255                         prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
2256                         prog->knownstrings_freeable = (unsigned char *)PRVM_Alloc(prog->maxknownstrings * sizeof(unsigned char));
2257                         if (prog->numknownstrings)
2258                         {
2259                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
2260                                 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(unsigned char));
2261                         }
2262                 }
2263                 prog->numknownstrings++;
2264         }
2265         prog->firstfreeknownstring = i + 1;
2266         prog->knownstrings[i] = s;
2267         return -1 - i;
2268 }
2269
2270 // temp string handling
2271
2272 // all tempstrings go into this buffer consecutively, and it is reset
2273 // whenever PRVM_ExecuteProgram returns to the engine
2274 // (technically each PRVM_ExecuteProgram call saves the cursize value and
2275 //  restores it on return, so multiple recursive calls can share the same
2276 //  buffer)
2277 // the buffer size is automatically grown as needed
2278
2279 int PRVM_SetTempString(const char *s)
2280 {
2281         int size;
2282         char *t;
2283         if (!s)
2284                 return 0;
2285         size = (int)strlen(s) + 1;
2286         if (developer.integer >= 300)
2287                 Con_Printf("PRVM_SetTempString: cursize %i, size %i\n", vm_tempstringsbuf.cursize, size);
2288         if (vm_tempstringsbuf.maxsize < vm_tempstringsbuf.cursize + size)
2289         {
2290                 sizebuf_t old = vm_tempstringsbuf;
2291                 if (vm_tempstringsbuf.cursize + size >= 1<<28)
2292                         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);
2293                 vm_tempstringsbuf.maxsize = max(vm_tempstringsbuf.maxsize, 65536);
2294                 while (vm_tempstringsbuf.maxsize < vm_tempstringsbuf.cursize + size)
2295                         vm_tempstringsbuf.maxsize *= 2;
2296                 if (vm_tempstringsbuf.maxsize != old.maxsize || vm_tempstringsbuf.data == NULL)
2297                 {
2298                         if (developer.integer >= 100)
2299                                 Con_Printf("PRVM_SetTempString: enlarging tempstrings buffer (%iKB -> %iKB)\n", old.maxsize/1024, vm_tempstringsbuf.maxsize/1024);
2300                         vm_tempstringsbuf.data = Mem_Alloc(sv_mempool, vm_tempstringsbuf.maxsize);
2301                         if (old.cursize)
2302                                 memcpy(vm_tempstringsbuf.data, old.data, old.cursize);
2303                         if (old.data)
2304                                 Mem_Free(old.data);
2305                 }
2306         }
2307         t = (char *)vm_tempstringsbuf.data + vm_tempstringsbuf.cursize;
2308         memcpy(t, s, size);
2309         vm_tempstringsbuf.cursize += size;
2310         return PRVM_SetEngineString(t);
2311 }
2312
2313 int PRVM_AllocString(size_t bufferlength, char **pointer)
2314 {
2315         int i;
2316         if (!bufferlength)
2317                 return 0;
2318         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
2319                 if (!prog->knownstrings[i])
2320                         break;
2321         if (i >= prog->numknownstrings)
2322         {
2323                 if (i >= prog->maxknownstrings)
2324                 {
2325                         const char **oldstrings = prog->knownstrings;
2326                         const unsigned char *oldstrings_freeable = prog->knownstrings_freeable;
2327                         prog->maxknownstrings += 128;
2328                         prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
2329                         prog->knownstrings_freeable = (unsigned char *)PRVM_Alloc(prog->maxknownstrings * sizeof(unsigned char));
2330                         if (prog->numknownstrings)
2331                         {
2332                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
2333                                 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(unsigned char));
2334                         }
2335                 }
2336                 prog->numknownstrings++;
2337         }
2338         prog->firstfreeknownstring = i + 1;
2339         prog->knownstrings[i] = (char *)PRVM_Alloc(bufferlength);
2340         prog->knownstrings_freeable[i] = true;
2341         if (pointer)
2342                 *pointer = (char *)(prog->knownstrings[i]);
2343         return -1 - i;
2344 }
2345
2346 void PRVM_FreeString(int num)
2347 {
2348         if (num == 0)
2349                 PRVM_ERROR("PRVM_FreeString: attempt to free a NULL string");
2350         else if (num >= 0 && num < prog->stringssize)
2351                 PRVM_ERROR("PRVM_FreeString: attempt to free a constant string");
2352         else if (num < 0 && num >= -prog->numknownstrings)
2353         {
2354                 num = -1 - num;
2355                 if (!prog->knownstrings[num])
2356                         PRVM_ERROR("PRVM_FreeString: attempt to free a non-existent or already freed string");
2357                 if (!prog->knownstrings[num])
2358                         PRVM_ERROR("PRVM_FreeString: attempt to free a string owned by the engine");
2359                 PRVM_Free((char *)prog->knownstrings[num]);
2360                 prog->knownstrings[num] = NULL;
2361                 prog->knownstrings_freeable[num] = false;
2362                 prog->firstfreeknownstring = min(prog->firstfreeknownstring, num);
2363         }
2364         else
2365                 PRVM_ERROR("PRVM_FreeString: invalid string offset %i", num);
2366 }
2367