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                 def = PRVM_ED_FindField(s);
 986                 if (!def)
 987                 {
 988                         Con_DPrintf("PRVM_ED_ParseEpair: Can't find field %s in %s\n", s, PRVM_NAME);
 989                         return false;
 990                 }
 991                 val->_int = def->ofs;
 992                 break;
 993
 994         case ev_function:
 995                 func = PRVM_ED_FindFunction(s);
 996                 if (!func)
 997                 {
 998                         Con_Printf("PRVM_ED_ParseEpair: Can't find function %s in %s\n", s, PRVM_NAME);
 999                         return false;
1000                 }
1001                 val->function = func - prog->functions;
1002                 break;
1003
1004         default:
1005                 Con_Printf("PRVM_ED_ParseEpair: Unknown key->type %i for key \"%s\" on %s\n", key->type, PRVM_GetString(key->s_name), PRVM_NAME);
1006                 return false;
1007         }
1008         return true;
1009 }
1010
1011 /*
1012 =============
1013 PRVM_GameCommand_f
1014
1015 Console command to send a string to QC function GameCommand of the
1016 indicated progs
1017
1018 Usage:
1019   sv_cmd adminmsg 3 "do not teamkill"
1020   cl_cmd someclientcommand
1021   menu_cmd somemenucommand
1022
1023 All progs can support this extension; sg calls it in server QC, cg in client
1024 QC, mg in menu QC.
1025 =============
1026 */
1027 void PRVM_GameCommand(const char *whichprogs, const char *whichcmd)
1028 {
1029         if(Cmd_Argc() < 1)
1030         {
1031                 Con_Printf("%s text...\n", whichcmd);
1032                 return;
1033         }
1034
1035         PRVM_Begin;
1036         if(!PRVM_SetProgFromString(whichprogs))
1037         // note: this is not PRVM_SetProg because that one aborts "hard" using PRVM_Error
1038         // also, it makes printing error messages easier!
1039         {
1040                 Con_Printf("%s program not loaded.\n", whichprogs);
1041                 return;
1042         }
1043
1044         if(!prog->funcoffsets.GameCommand)
1045         {
1046                 Con_Printf("%s program do not support GameCommand!\n", whichprogs);
1047         }
1048         else
1049         {
1050                 int restorevm_tempstringsbuf_cursize;
1051                 const char *s;
1052
1053                 s = Cmd_Args();
1054
1055                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
1056                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(s ? s : "");
1057                 PRVM_ExecuteProgram (prog->funcoffsets.GameCommand, "QC function GameCommand is missing");
1058                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
1059         }
1060
1061         PRVM_End;
1062 }
1063 void PRVM_GameCommand_Server_f(void)
1064 {
1065         PRVM_GameCommand("server", "sv_cmd");
1066 }
1067 void PRVM_GameCommand_Client_f(void)
1068 {
1069         PRVM_GameCommand("client", "cl_cmd");
1070 }
1071 void PRVM_GameCommand_Menu_f(void)
1072 {
1073         PRVM_GameCommand("menu", "menu_cmd");
1074 }
1075
1076 /*
1077 =============
1078 PRVM_ED_EdictSet_f
1079
1080 Console command to set a field of a specified edict
1081 =============
1082 */
1083 void PRVM_ED_EdictSet_f(void)
1084 {
1085         prvm_edict_t *ed;
1086         ddef_t *key;
1087
1088         if(Cmd_Argc() != 5)
1089         {
1090                 Con_Print("prvm_edictset <program name> <edict number> <field> <value>\n");
1091                 return;
1092         }
1093
1094         PRVM_Begin;
1095         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1096         {
1097                 Con_Printf("Wrong program name %s !\n", Cmd_Argv(1));
1098                 return;
1099         }
1100
1101         ed = PRVM_EDICT_NUM(atoi(Cmd_Argv(2)));
1102
1103         if((key = PRVM_ED_FindField(Cmd_Argv(3))) == 0)
1104                 Con_Printf("Key %s not found !\n", Cmd_Argv(3));
1105         else
1106                 PRVM_ED_ParseEpair(ed, key, Cmd_Argv(4));
1107
1108         PRVM_End;
1109 }
1110
1111 /*
1112 ====================
1113 PRVM_ED_ParseEdict
1114
1115 Parses an edict out of the given string, returning the new position
1116 ed should be a properly initialized empty edict.
1117 Used for initial level load and for savegames.
1118 ====================
1119 */
1120 extern cvar_t developer_entityparsing;
1121 const char *PRVM_ED_ParseEdict (const char *data, prvm_edict_t *ent)
1122 {
1123         ddef_t *key;
1124         qboolean anglehack;
1125         qboolean init;
1126         char keyname[256];
1127         size_t n;
1128
1129         init = false;
1130
1131 // go through all the dictionary pairs
1132         while (1)
1133         {
1134         // parse key
1135                 if (!COM_ParseToken_Simple(&data, false, false))
1136                         PRVM_ERROR ("PRVM_ED_ParseEdict: EOF without closing brace");
1137                 if (developer_entityparsing.integer)
1138                         Con_Printf("Key: \"%s\"", com_token);
1139                 if (com_token[0] == '}')
1140                         break;
1141
1142                 // anglehack is to allow QuakeEd to write single scalar angles
1143                 // and allow them to be turned into vectors. (FIXME...)
1144                 if (!strcmp(com_token, "angle"))
1145                 {
1146                         strlcpy (com_token, "angles", sizeof(com_token));
1147                         anglehack = true;
1148                 }
1149                 else
1150                         anglehack = false;
1151
1152                 // FIXME: change light to _light to get rid of this hack
1153                 if (!strcmp(com_token, "light"))
1154                         strlcpy (com_token, "light_lev", sizeof(com_token));    // hack for single light def
1155
1156                 strlcpy (keyname, com_token, sizeof(keyname));
1157
1158                 // another hack to fix keynames with trailing spaces
1159                 n = strlen(keyname);
1160                 while (n && keyname[n-1] == ' ')
1161                 {
1162                         keyname[n-1] = 0;
1163                         n--;
1164                 }
1165
1166         // parse value
1167                 if (!COM_ParseToken_Simple(&data, false, true))
1168                         PRVM_ERROR ("PRVM_ED_ParseEdict: EOF without closing brace");
1169                 if (developer_entityparsing.integer)
1170                         Con_Printf(" \"%s\"\n", com_token);
1171
1172                 if (com_token[0] == '}')
1173                         PRVM_ERROR ("PRVM_ED_ParseEdict: closing brace without data");
1174
1175                 init = true;
1176
1177                 // ignore attempts to set key "" (this problem occurs in nehahra neh1m8.bsp)
1178                 if (!keyname[0])
1179                         continue;
1180
1181 // keynames with a leading underscore are used for utility comments,
1182 // and are immediately discarded by quake
1183                 if (keyname[0] == '_')
1184                         continue;
1185
1186                 key = PRVM_ED_FindField (keyname);
1187                 if (!key)
1188                 {
1189                         Con_DPrintf("%s: '%s' is not a field\n", PRVM_NAME, keyname);
1190                         continue;
1191                 }
1192
1193                 if (anglehack)
1194                 {
1195                         char    temp[32];
1196                         strlcpy (temp, com_token, sizeof(temp));
1197                         sprintf (com_token, "0 %s 0", temp);
1198                 }
1199
1200                 if (!PRVM_ED_ParseEpair(ent, key, com_token))
1201                         PRVM_ERROR ("PRVM_ED_ParseEdict: parse error");
1202         }
1203
1204         if (!init)
1205                 ent->priv.required->free = true;
1206
1207         return data;
1208 }
1209
1210
1211 /*
1212 ================
1213 PRVM_ED_LoadFromFile
1214
1215 The entities are directly placed in the array, rather than allocated with
1216 PRVM_ED_Alloc, because otherwise an error loading the map would have entity
1217 number references out of order.
1218
1219 Creates a server's entity / program execution context by
1220 parsing textual entity definitions out of an ent file.
1221
1222 Used for both fresh maps and savegame loads.  A fresh map would also need
1223 to call PRVM_ED_CallSpawnFunctions () to let the objects initialize themselves.
1224 ================
1225 */
1226 void PRVM_ED_LoadFromFile (const char *data)
1227 {
1228         prvm_edict_t *ent;
1229         int parsed, inhibited, spawned, died;
1230         const char *funcname;
1231         mfunction_t *func;
1232
1233         parsed = 0;
1234         inhibited = 0;
1235         spawned = 0;
1236         died = 0;
1237
1238
1239 // parse ents
1240         while (1)
1241         {
1242 // parse the opening brace
1243                 if (!COM_ParseToken_Simple(&data, false, false))
1244                         break;
1245                 if (com_token[0] != '{')
1246                         PRVM_ERROR ("PRVM_ED_LoadFromFile: %s: found %s when expecting {", PRVM_NAME, com_token);
1247
1248                 // CHANGED: this is not conform to PR_LoadFromFile
1249                 if(prog->loadintoworld)
1250                 {
1251                         prog->loadintoworld = false;
1252                         ent = PRVM_EDICT_NUM(0);
1253                 }
1254                 else
1255                         ent = PRVM_ED_Alloc();
1256
1257                 // clear it
1258                 if (ent != prog->edicts)        // hack
1259                         memset (ent->fields.vp, 0, prog->progs->entityfields * 4);
1260
1261                 data = PRVM_ED_ParseEdict (data, ent);
1262                 parsed++;
1263
1264                 // remove the entity ?
1265                 if(prog->load_edict && !prog->load_edict(ent))
1266                 {
1267                         PRVM_ED_Free(ent);
1268                         inhibited++;
1269                         continue;
1270                 }
1271
1272 //
1273 // immediately call spawn function, but only if there is a self global and a classname
1274 //
1275                 if(prog->globaloffsets.self >= 0 && prog->fieldoffsets.classname >= 0)
1276                 {
1277                         string_t handle =  PRVM_EDICTFIELDVALUE(ent, prog->fieldoffsets.classname)->string;
1278                         if (!handle)
1279                         {
1280                                 Con_Print("No classname for:\n");
1281                                 PRVM_ED_Print(ent, NULL);
1282                                 PRVM_ED_Free (ent);
1283                                 continue;
1284                         }
1285
1286                         // look for the spawn function
1287                         funcname = PRVM_GetString(handle);
1288                         func = PRVM_ED_FindFunction (va("spawnfunc_%s", funcname));
1289                         if(!func)
1290                                 func = PRVM_ED_FindFunction (funcname);
1291
1292                         if (!func)
1293                         {
1294                                 // check for OnEntityNoSpawnFunction
1295                                 if (prog->funcoffsets.SV_OnEntityNoSpawnFunction)
1296                                 {
1297                                         // self = ent
1298                                         PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict = PRVM_EDICT_TO_PROG(ent);
1299                                         PRVM_ExecuteProgram (prog->funcoffsets.SV_OnEntityNoSpawnFunction, "QC function SV_OnEntityNoSpawnFunction is missing");
1300                                 }
1301                                 else
1302                                 {
1303                                         if (developer.integer) // don't confuse non-developers with errors
1304                                         {
1305                                                 Con_Print("No spawn function for:\n");
1306                                                 PRVM_ED_Print(ent, NULL);
1307                                         }
1308                                         PRVM_ED_Free (ent);
1309                                         continue;
1310                                 }
1311                         }
1312                         else
1313                         {
1314                                 // self = ent
1315                                 PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict = PRVM_EDICT_TO_PROG(ent);
1316                                 PRVM_ExecuteProgram (func - prog->functions, "");
1317                         }
1318                 }
1319
1320                 spawned++;
1321                 if (ent->priv.required->free)
1322                         died++;
1323         }
1324
1325         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);
1326 }
1327
1328 void PRVM_FindOffsets(void)
1329 {
1330         // field and global searches use -1 for NULL
1331         memset(&prog->fieldoffsets, -1, sizeof(prog->fieldoffsets));
1332         memset(&prog->globaloffsets, -1, sizeof(prog->globaloffsets));
1333         // functions use 0 for NULL
1334         memset(&prog->funcoffsets, 0, sizeof(prog->funcoffsets));
1335
1336         // server and client qc use a lot of similar fields, so this is combined
1337         prog->fieldoffsets.SendEntity                     = PRVM_ED_FindFieldOffset("SendEntity");
1338         prog->fieldoffsets.Version                        = PRVM_ED_FindFieldOffset("Version");
1339         prog->fieldoffsets.alpha                          = PRVM_ED_FindFieldOffset("alpha");
1340         prog->fieldoffsets.ammo_cells1                    = PRVM_ED_FindFieldOffset("ammo_cells1");
1341         prog->fieldoffsets.ammo_lava_nails                = PRVM_ED_FindFieldOffset("ammo_lava_nails");
1342         prog->fieldoffsets.ammo_multi_rockets             = PRVM_ED_FindFieldOffset("ammo_multi_rockets");
1343         prog->fieldoffsets.ammo_nails1                    = PRVM_ED_FindFieldOffset("ammo_nails1");
1344         prog->fieldoffsets.ammo_plasma                    = PRVM_ED_FindFieldOffset("ammo_plasma");
1345         prog->fieldoffsets.ammo_rockets1                  = PRVM_ED_FindFieldOffset("ammo_rockets1");
1346         prog->fieldoffsets.ammo_shells1                   = PRVM_ED_FindFieldOffset("ammo_shells1");
1347         prog->fieldoffsets.angles                         = PRVM_ED_FindFieldOffset("angles");
1348         prog->fieldoffsets.button3                        = PRVM_ED_FindFieldOffset("button3");
1349         prog->fieldoffsets.button4                        = PRVM_ED_FindFieldOffset("button4");
1350         prog->fieldoffsets.button5                        = PRVM_ED_FindFieldOffset("button5");
1351         prog->fieldoffsets.button6                        = PRVM_ED_FindFieldOffset("button6");
1352         prog->fieldoffsets.button7                        = PRVM_ED_FindFieldOffset("button7");
1353         prog->fieldoffsets.button8                        = PRVM_ED_FindFieldOffset("button8");
1354         prog->fieldoffsets.button9                        = PRVM_ED_FindFieldOffset("button9");
1355         prog->fieldoffsets.button10                       = PRVM_ED_FindFieldOffset("button10");
1356         prog->fieldoffsets.button11                       = PRVM_ED_FindFieldOffset("button11");
1357         prog->fieldoffsets.button12                       = PRVM_ED_FindFieldOffset("button12");
1358         prog->fieldoffsets.button13                       = PRVM_ED_FindFieldOffset("button13");
1359         prog->fieldoffsets.button14                       = PRVM_ED_FindFieldOffset("button14");
1360         prog->fieldoffsets.button15                       = PRVM_ED_FindFieldOffset("button15");
1361         prog->fieldoffsets.button16                       = PRVM_ED_FindFieldOffset("button16");
1362         prog->fieldoffsets.buttonchat                     = PRVM_ED_FindFieldOffset("buttonchat");
1363         prog->fieldoffsets.buttonuse                      = PRVM_ED_FindFieldOffset("buttonuse");
1364         prog->fieldoffsets.chain                          = PRVM_ED_FindFieldOffset("chain");
1365         prog->fieldoffsets.classname                      = PRVM_ED_FindFieldOffset("classname");
1366         prog->fieldoffsets.clientcolors                   = PRVM_ED_FindFieldOffset("clientcolors");
1367         prog->fieldoffsets.color                          = PRVM_ED_FindFieldOffset("color");
1368         prog->fieldoffsets.colormod                       = PRVM_ED_FindFieldOffset("colormod");
1369         prog->fieldoffsets.contentstransition             = PRVM_ED_FindFieldOffset("contentstransition");
1370         prog->fieldoffsets.cursor_active                  = PRVM_ED_FindFieldOffset("cursor_active");
1371         prog->fieldoffsets.cursor_screen                  = PRVM_ED_FindFieldOffset("cursor_screen");
1372         prog->fieldoffsets.cursor_trace_endpos            = PRVM_ED_FindFieldOffset("cursor_trace_endpos");
1373         prog->fieldoffsets.cursor_trace_ent               = PRVM_ED_FindFieldOffset("cursor_trace_ent");
1374         prog->fieldoffsets.cursor_trace_start             = PRVM_ED_FindFieldOffset("cursor_trace_start");
1375         prog->fieldoffsets.customizeentityforclient       = PRVM_ED_FindFieldOffset("customizeentityforclient");
1376         prog->fieldoffsets.dimension_hit                  = PRVM_ED_FindFieldOffset("dimension_hit");
1377         prog->fieldoffsets.dimension_solid                = PRVM_ED_FindFieldOffset("dimension_solid");
1378         prog->fieldoffsets.disableclientprediction        = PRVM_ED_FindFieldOffset("disableclientprediction");
1379         prog->fieldoffsets.dphitcontentsmask              = PRVM_ED_FindFieldOffset("dphitcontentsmask");
1380         prog->fieldoffsets.drawonlytoclient               = PRVM_ED_FindFieldOffset("drawonlytoclient");
1381         prog->fieldoffsets.exteriormodeltoclient          = PRVM_ED_FindFieldOffset("exteriormodeltoclient");
1382         prog->fieldoffsets.fatness                        = PRVM_ED_FindFieldOffset("fatness");
1383         prog->fieldoffsets.forceshader                    = PRVM_ED_FindFieldOffset("forceshader");
1384         prog->fieldoffsets.frame                          = PRVM_ED_FindFieldOffset("frame");
1385         prog->fieldoffsets.frame1time                     = PRVM_ED_FindFieldOffset("frame1time");
1386         prog->fieldoffsets.frame2                         = PRVM_ED_FindFieldOffset("frame2");
1387         prog->fieldoffsets.frame2time                     = PRVM_ED_FindFieldOffset("frame2time");
1388         prog->fieldoffsets.fullbright                     = PRVM_ED_FindFieldOffset("fullbright");
1389         prog->fieldoffsets.glow_color                     = PRVM_ED_FindFieldOffset("glow_color");
1390         prog->fieldoffsets.glow_size                      = PRVM_ED_FindFieldOffset("glow_size");
1391         prog->fieldoffsets.glow_trail                     = PRVM_ED_FindFieldOffset("glow_trail");
1392         prog->fieldoffsets.gravity                        = PRVM_ED_FindFieldOffset("gravity");
1393         prog->fieldoffsets.groundentity                   = PRVM_ED_FindFieldOffset("groundentity");
1394         prog->fieldoffsets.hull                           = PRVM_ED_FindFieldOffset("hull");
1395         prog->fieldoffsets.ideal_yaw                      = PRVM_ED_FindFieldOffset("ideal_yaw");
1396         prog->fieldoffsets.idealpitch                     = PRVM_ED_FindFieldOffset("idealpitch");
1397         prog->fieldoffsets.items2                         = PRVM_ED_FindFieldOffset("items2");
1398         prog->fieldoffsets.lerpfrac                       = PRVM_ED_FindFieldOffset("lerpfrac");
1399         prog->fieldoffsets.light_lev                      = PRVM_ED_FindFieldOffset("light_lev");
1400         prog->fieldoffsets.message                        = PRVM_ED_FindFieldOffset("message");
1401         prog->fieldoffsets.modelflags                     = PRVM_ED_FindFieldOffset("modelflags");
1402         prog->fieldoffsets.movement                       = PRVM_ED_FindFieldOffset("movement");
1403         prog->fieldoffsets.netaddress                     = PRVM_ED_FindFieldOffset("netaddress");
1404         prog->fieldoffsets.nextthink                      = PRVM_ED_FindFieldOffset("nextthink");
1405         prog->fieldoffsets.nodrawtoclient                 = PRVM_ED_FindFieldOffset("nodrawtoclient");
1406         prog->fieldoffsets.pflags                         = PRVM_ED_FindFieldOffset("pflags");
1407         prog->fieldoffsets.ping                           = PRVM_ED_FindFieldOffset("ping");
1408         prog->fieldoffsets.pitch_speed                    = PRVM_ED_FindFieldOffset("pitch_speed");
1409         prog->fieldoffsets.playermodel                    = PRVM_ED_FindFieldOffset("playermodel");
1410         prog->fieldoffsets.playerskin                     = PRVM_ED_FindFieldOffset("playerskin");
1411         prog->fieldoffsets.pmodel                         = PRVM_ED_FindFieldOffset("pmodel");
1412         prog->fieldoffsets.punchvector                    = PRVM_ED_FindFieldOffset("punchvector");
1413         prog->fieldoffsets.renderamt                      = PRVM_ED_FindFieldOffset("renderamt"); // HalfLife support
1414         prog->fieldoffsets.renderflags                    = PRVM_ED_FindFieldOffset("renderflags");
1415         prog->fieldoffsets.rendermode                     = PRVM_ED_FindFieldOffset("rendermode"); // HalfLife support
1416         prog->fieldoffsets.scale                          = PRVM_ED_FindFieldOffset("scale");
1417         prog->fieldoffsets.style                          = PRVM_ED_FindFieldOffset("style");
1418         prog->fieldoffsets.tag_entity                     = PRVM_ED_FindFieldOffset("tag_entity");
1419         prog->fieldoffsets.tag_index                      = PRVM_ED_FindFieldOffset("tag_index");
1420         prog->fieldoffsets.think                          = PRVM_ED_FindFieldOffset("think");
1421         prog->fieldoffsets.viewmodelforclient             = PRVM_ED_FindFieldOffset("viewmodelforclient");
1422         prog->fieldoffsets.viewzoom                       = PRVM_ED_FindFieldOffset("viewzoom");
1423         prog->fieldoffsets.yaw_speed                      = PRVM_ED_FindFieldOffset("yaw_speed");
1424         prog->fieldoffsets.clientcamera                   = PRVM_ED_FindFieldOffset("clientcamera");
1425         prog->funcoffsets.CSQC_ConsoleCommand             = PRVM_ED_FindFunctionOffset("CSQC_ConsoleCommand");
1426         prog->funcoffsets.CSQC_Ent_Remove                 = PRVM_ED_FindFunctionOffset("CSQC_Ent_Remove");
1427         prog->funcoffsets.CSQC_Ent_Update                 = PRVM_ED_FindFunctionOffset("CSQC_Ent_Update");
1428         prog->funcoffsets.CSQC_Event                      = PRVM_ED_FindFunctionOffset("CSQC_Event");
1429         prog->funcoffsets.CSQC_Event_Sound                = PRVM_ED_FindFunctionOffset("CSQC_Event_Sound");
1430         prog->funcoffsets.CSQC_Init                       = PRVM_ED_FindFunctionOffset("CSQC_Init");
1431         prog->funcoffsets.CSQC_InputEvent                 = PRVM_ED_FindFunctionOffset("CSQC_InputEvent");
1432         prog->funcoffsets.CSQC_Parse_CenterPrint          = PRVM_ED_FindFunctionOffset("CSQC_Parse_CenterPrint");
1433         prog->funcoffsets.CSQC_Parse_Print                = PRVM_ED_FindFunctionOffset("CSQC_Parse_Print");
1434         prog->funcoffsets.CSQC_Parse_StuffCmd             = PRVM_ED_FindFunctionOffset("CSQC_Parse_StuffCmd");
1435         prog->funcoffsets.CSQC_Parse_TempEntity           = PRVM_ED_FindFunctionOffset("CSQC_Parse_TempEntity");
1436         prog->funcoffsets.CSQC_Shutdown                   = PRVM_ED_FindFunctionOffset("CSQC_Shutdown");
1437         prog->funcoffsets.CSQC_UpdateView                 = PRVM_ED_FindFunctionOffset("CSQC_UpdateView");
1438         prog->funcoffsets.Gecko_Query                     = PRVM_ED_FindFunctionOffset("Gecko_Query");
1439         prog->funcoffsets.EndFrame                        = PRVM_ED_FindFunctionOffset("EndFrame");
1440         prog->funcoffsets.RestoreGame                     = PRVM_ED_FindFunctionOffset("RestoreGame");
1441         prog->funcoffsets.SV_ChangeTeam                   = PRVM_ED_FindFunctionOffset("SV_ChangeTeam");
1442         prog->funcoffsets.SV_ParseClientCommand           = PRVM_ED_FindFunctionOffset("SV_ParseClientCommand");
1443         prog->funcoffsets.SV_PlayerPhysics                = PRVM_ED_FindFunctionOffset("SV_PlayerPhysics");
1444         prog->funcoffsets.SV_OnEntityNoSpawnFunction      = PRVM_ED_FindFunctionOffset("SV_OnEntityNoSpawnFunction");
1445         prog->funcoffsets.GameCommand                     = PRVM_ED_FindFunctionOffset("GameCommand");
1446         prog->funcoffsets.SV_Shutdown                     = PRVM_ED_FindFunctionOffset("SV_Shutdown");
1447         prog->globaloffsets.SV_InitCmd                    = PRVM_ED_FindGlobalOffset("SV_InitCmd");
1448         prog->globaloffsets.self                          = PRVM_ED_FindGlobalOffset("self");
1449         prog->globaloffsets.time                          = PRVM_ED_FindGlobalOffset("time");
1450         prog->globaloffsets.v_forward                     = PRVM_ED_FindGlobalOffset("v_forward");
1451         prog->globaloffsets.v_right                       = PRVM_ED_FindGlobalOffset("v_right");
1452         prog->globaloffsets.v_up                          = PRVM_ED_FindGlobalOffset("v_up");
1453         prog->globaloffsets.view_angles                   = PRVM_ED_FindGlobalOffset("view_angles");
1454         prog->globaloffsets.trace_allsolid                = PRVM_ED_FindGlobalOffset("trace_allsolid");
1455         prog->globaloffsets.trace_startsolid              = PRVM_ED_FindGlobalOffset("trace_startsolid");
1456         prog->globaloffsets.trace_fraction                = PRVM_ED_FindGlobalOffset("trace_fraction");
1457         prog->globaloffsets.trace_inwater                 = PRVM_ED_FindGlobalOffset("trace_inwater");
1458         prog->globaloffsets.trace_inopen                  = PRVM_ED_FindGlobalOffset("trace_inopen");
1459         prog->globaloffsets.trace_endpos                  = PRVM_ED_FindGlobalOffset("trace_endpos");
1460         prog->globaloffsets.trace_plane_normal            = PRVM_ED_FindGlobalOffset("trace_plane_normal");
1461         prog->globaloffsets.trace_plane_dist              = PRVM_ED_FindGlobalOffset("trace_plane_dist");
1462         prog->globaloffsets.trace_ent                     = PRVM_ED_FindGlobalOffset("trace_ent");
1463         prog->globaloffsets.trace_dphitcontents           = PRVM_ED_FindGlobalOffset("trace_dphitcontents");
1464         prog->globaloffsets.trace_dphitq3surfaceflags     = PRVM_ED_FindGlobalOffset("trace_dphitq3surfaceflags");
1465         prog->globaloffsets.trace_dphittexturename        = PRVM_ED_FindGlobalOffset("trace_dphittexturename");
1466         prog->globaloffsets.trace_dpstartcontents         = PRVM_ED_FindGlobalOffset("trace_dpstartcontents");
1467         prog->globaloffsets.intermission                  = PRVM_ED_FindGlobalOffset("intermission");
1468         prog->globaloffsets.coop                          = PRVM_ED_FindGlobalOffset("coop");
1469         prog->globaloffsets.deathmatch                    = PRVM_ED_FindGlobalOffset("deathmatch");
1470         prog->globaloffsets.dmg_take                      = PRVM_ED_FindGlobalOffset("dmg_take");
1471         prog->globaloffsets.dmg_save                      = PRVM_ED_FindGlobalOffset("dmg_save");
1472         prog->globaloffsets.dmg_origin                    = PRVM_ED_FindGlobalOffset("dmg_origin");
1473         prog->globaloffsets.sb_showscores                 = PRVM_ED_FindGlobalOffset("sb_showscores");
1474         prog->globaloffsets.drawfont                      = PRVM_ED_FindGlobalOffset("drawfont");
1475
1476         // menu qc only uses some functions, nothing else
1477         prog->funcoffsets.m_draw                          = PRVM_ED_FindFunctionOffset("m_draw");
1478         prog->funcoffsets.m_init                          = PRVM_ED_FindFunctionOffset("m_init");
1479         prog->funcoffsets.m_keydown                       = PRVM_ED_FindFunctionOffset("m_keydown");
1480         prog->funcoffsets.m_keyup                         = PRVM_ED_FindFunctionOffset("m_keyup");
1481         prog->funcoffsets.m_shutdown                      = PRVM_ED_FindFunctionOffset("m_shutdown");
1482         prog->funcoffsets.m_toggle                        = PRVM_ED_FindFunctionOffset("m_toggle");
1483 }
1484
1485 // not used
1486 /*
1487 typedef struct dpfield_s
1488 {
1489         int type;
1490         char *string;
1491 }
1492 dpfield_t;
1493
1494 #define DPFIELDS (sizeof(dpfields) / sizeof(dpfield_t))
1495
1496 dpfield_t dpfields[] =
1497 {
1498 };
1499 */
1500
1501 /*
1502 ===============
1503 PRVM_ResetProg
1504 ===============
1505 */
1506
1507 void PRVM_ResetProg()
1508 {
1509         PRVM_GCALL(reset_cmd)();
1510         Mem_FreePool(&prog->progs_mempool);
1511         memset(prog,0,sizeof(prvm_prog_t));
1512         prog->starttime = Sys_DoubleTime();
1513 }
1514
1515 /*
1516 ===============
1517 PRVM_LoadLNO
1518 ===============
1519 */
1520 void PRVM_LoadLNO( const char *progname ) {
1521         fs_offset_t filesize;
1522         unsigned char *lno;
1523         unsigned int *header;
1524         char filename[512];
1525
1526         FS_StripExtension( progname, filename, sizeof( filename ) );
1527         strlcat( filename, ".lno", sizeof( filename ) );
1528
1529         lno = FS_LoadFile( filename, tempmempool, false, &filesize );
1530         if( !lno ) {
1531                 return;
1532         }
1533
1534 /*
1535 <Spike>    SafeWrite (h, &lnotype, sizeof(int));
1536 <Spike>    SafeWrite (h, &version, sizeof(int));
1537 <Spike>    SafeWrite (h, &numglobaldefs, sizeof(int));
1538 <Spike>    SafeWrite (h, &numpr_globals, sizeof(int));
1539 <Spike>    SafeWrite (h, &numfielddefs, sizeof(int));
1540 <Spike>    SafeWrite (h, &numstatements, sizeof(int));
1541 <Spike>    SafeWrite (h, statement_linenums, numstatements*sizeof(int));
1542 */
1543         if( (unsigned) filesize < (6 + prog->progs->numstatements) * sizeof( int ) ) {
1544                 Mem_Free(lno);
1545                 return;
1546         }
1547
1548         header = (unsigned int *) lno;
1549         if( header[ 0 ] == *(unsigned int *) "LNOF" &&
1550                 LittleLong( header[ 1 ] ) == 1 &&
1551                 (unsigned int)LittleLong( header[ 2 ] ) == (unsigned int)prog->progs->numglobaldefs &&
1552                 (unsigned int)LittleLong( header[ 3 ] ) == (unsigned int)prog->progs->numglobals &&
1553                 (unsigned int)LittleLong( header[ 4 ] ) == (unsigned int)prog->progs->numfielddefs &&
1554                 (unsigned int)LittleLong( header[ 5 ] ) == (unsigned int)prog->progs->numstatements )
1555         {
1556                 prog->statement_linenums = (int *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof( int ) );
1557                 memcpy( prog->statement_linenums, (int *) lno + 6, prog->progs->numstatements * sizeof( int ) );
1558         }
1559         Mem_Free( lno );
1560 }
1561
1562 /*
1563 ===============
1564 PRVM_LoadProgs
1565 ===============
1566 */
1567 void PRVM_LoadProgs (const char * filename, int numrequiredfunc, char **required_func, int numrequiredfields, prvm_required_field_t *required_field, int numrequiredglobals, char **required_global)
1568 {
1569         int i;
1570         dstatement_t *st;
1571         ddef_t *infielddefs;
1572         dfunction_t *dfunctions;
1573         fs_offset_t filesize;
1574
1575         if( prog->loaded ) {
1576                 PRVM_ERROR ("PRVM_LoadProgs: there is already a %s program loaded!", PRVM_NAME );
1577         }
1578
1579         prog->progs = (dprograms_t *)FS_LoadFile (filename, prog->progs_mempool, false, &filesize);
1580         if (prog->progs == NULL || filesize < (fs_offset_t)sizeof(dprograms_t))
1581                 PRVM_ERROR ("PRVM_LoadProgs: couldn't load %s for %s", filename, PRVM_NAME);
1582
1583         Con_DPrintf("%s programs occupy %iK.\n", PRVM_NAME, (int)(filesize/1024));
1584
1585         prog->filecrc = CRC_Block((unsigned char *)prog->progs, filesize);
1586
1587 // byte swap the header
1588         for (i = 0;i < (int) sizeof(*prog->progs) / 4;i++)
1589                 ((int *)prog->progs)[i] = LittleLong ( ((int *)prog->progs)[i] );
1590
1591         if (prog->progs->version != PROG_VERSION)
1592                 PRVM_ERROR ("%s: %s has wrong version number (%i should be %i)", PRVM_NAME, filename, prog->progs->version, PROG_VERSION);
1593         if (prog->progs->crc != prog->headercrc)
1594                 PRVM_ERROR ("%s: %s system vars have been modified, progdefs.h is out of date", PRVM_NAME, filename);
1595
1596         //prog->functions = (dfunction_t *)((unsigned char *)progs + progs->ofs_functions);
1597         dfunctions = (dfunction_t *)((unsigned char *)prog->progs + prog->progs->ofs_functions);
1598
1599         if (prog->progs->ofs_strings + prog->progs->numstrings >= (int)filesize)
1600                 PRVM_ERROR ("%s: %s strings go past end of file", PRVM_NAME, filename);
1601         prog->strings = (char *)prog->progs + prog->progs->ofs_strings;
1602         prog->stringssize = prog->progs->numstrings;
1603
1604         prog->numknownstrings = 0;
1605         prog->maxknownstrings = 0;
1606         prog->knownstrings = NULL;
1607         prog->knownstrings_freeable = NULL;
1608
1609         Mem_ExpandableArray_NewArray(&prog->stringbuffersarray, prog->progs_mempool, sizeof(prvm_stringbuffer_t), 64);
1610
1611         prog->globaldefs = (ddef_t *)((unsigned char *)prog->progs + prog->progs->ofs_globaldefs);
1612
1613         // we need to expand the fielddefs list to include all the engine fields,
1614         // so allocate a new place for it
1615         infielddefs = (ddef_t *)((unsigned char *)prog->progs + prog->progs->ofs_fielddefs);
1616         //                                                                                              ( + DPFIELDS                       )
1617         prog->fielddefs = (ddef_t *)Mem_Alloc(prog->progs_mempool, (prog->progs->numfielddefs + numrequiredfields) * sizeof(ddef_t));
1618
1619         prog->statements = (dstatement_t *)((unsigned char *)prog->progs + prog->progs->ofs_statements);
1620
1621         prog->statement_profile = (double *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof(*prog->statement_profile));
1622
1623         // moved edict_size calculation down below field adding code
1624
1625         //pr_global_struct = (globalvars_t *)((unsigned char *)progs + progs->ofs_globals);
1626         prog->globals.generic = (float *)((unsigned char *)prog->progs + prog->progs->ofs_globals);
1627
1628 // byte swap the lumps
1629         for (i=0 ; i<prog->progs->numstatements ; i++)
1630         {
1631                 prog->statements[i].op = LittleShort(prog->statements[i].op);
1632                 prog->statements[i].a = LittleShort(prog->statements[i].a);
1633                 prog->statements[i].b = LittleShort(prog->statements[i].b);
1634                 prog->statements[i].c = LittleShort(prog->statements[i].c);
1635         }
1636
1637         prog->functions = (mfunction_t *)Mem_Alloc(prog->progs_mempool, sizeof(mfunction_t) * prog->progs->numfunctions);
1638         for (i = 0;i < prog->progs->numfunctions;i++)
1639         {
1640                 prog->functions[i].first_statement = LittleLong (dfunctions[i].first_statement);
1641                 prog->functions[i].parm_start = LittleLong (dfunctions[i].parm_start);
1642                 prog->functions[i].s_name = LittleLong (dfunctions[i].s_name);
1643                 prog->functions[i].s_file = LittleLong (dfunctions[i].s_file);
1644                 prog->functions[i].numparms = LittleLong (dfunctions[i].numparms);
1645                 prog->functions[i].locals = LittleLong (dfunctions[i].locals);
1646                 memcpy(prog->functions[i].parm_size, dfunctions[i].parm_size, sizeof(dfunctions[i].parm_size));
1647         }
1648
1649         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
1650         {
1651                 prog->globaldefs[i].type = LittleShort (prog->globaldefs[i].type);
1652                 prog->globaldefs[i].ofs = LittleShort (prog->globaldefs[i].ofs);
1653                 prog->globaldefs[i].s_name = LittleLong (prog->globaldefs[i].s_name);
1654         }
1655
1656         // copy the progs fields to the new fields list
1657         for (i = 0;i < prog->progs->numfielddefs;i++)
1658         {
1659                 prog->fielddefs[i].type = LittleShort (infielddefs[i].type);
1660                 if (prog->fielddefs[i].type & DEF_SAVEGLOBAL)
1661                         PRVM_ERROR ("PRVM_LoadProgs: prog->fielddefs[i].type & DEF_SAVEGLOBAL in %s", PRVM_NAME);
1662                 prog->fielddefs[i].ofs = LittleShort (infielddefs[i].ofs);
1663                 prog->fielddefs[i].s_name = LittleLong (infielddefs[i].s_name);
1664         }
1665
1666         // append the required fields
1667         for (i = 0;i < (int) numrequiredfields;i++)
1668         {
1669                 prog->fielddefs[prog->progs->numfielddefs].type = required_field[i].type;
1670                 prog->fielddefs[prog->progs->numfielddefs].ofs = prog->progs->entityfields;
1671                 prog->fielddefs[prog->progs->numfielddefs].s_name = PRVM_SetEngineString(required_field[i].name);
1672                 if (prog->fielddefs[prog->progs->numfielddefs].type == ev_vector)
1673                         prog->progs->entityfields += 3;
1674                 else
1675                         prog->progs->entityfields++;
1676                 prog->progs->numfielddefs++;
1677         }
1678
1679         // check required functions
1680         for(i=0 ; i < numrequiredfunc ; i++)
1681                 if(PRVM_ED_FindFunction(required_func[i]) == 0)
1682                         PRVM_ERROR("%s: %s not found in %s",PRVM_NAME, required_func[i], filename);
1683
1684         // check required globals
1685         for(i=0 ; i < numrequiredglobals ; i++)
1686                 if(PRVM_ED_FindGlobal(required_global[i]) == 0)
1687                         PRVM_ERROR("%s: %s not found in %s",PRVM_NAME, required_global[i], filename);
1688
1689         for (i=0 ; i<prog->progs->numglobals ; i++)
1690                 ((int *)prog->globals.generic)[i] = LittleLong (((int *)prog->globals.generic)[i]);
1691
1692         // moved edict_size calculation down here, below field adding code
1693         // LordHavoc: this no longer includes the prvm_edict_t header
1694         prog->edict_size = prog->progs->entityfields * 4;
1695         prog->edictareasize = prog->edict_size * prog->limit_edicts;
1696
1697         // LordHavoc: bounds check anything static
1698         for (i = 0,st = prog->statements;i < prog->progs->numstatements;i++,st++)
1699         {
1700                 switch (st->op)
1701                 {
1702                 case OP_IF:
1703                 case OP_IFNOT:
1704                         if ((unsigned short) st->a >= prog->progs->numglobals || st->b + i < 0 || st->b + i >= prog->progs->numstatements)
1705                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds IF/IFNOT (statement %d) in %s", i, PRVM_NAME);
1706                         break;
1707                 case OP_GOTO:
1708                         if (st->a + i < 0 || st->a + i >= prog->progs->numstatements)
1709                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds GOTO (statement %d) in %s", i, PRVM_NAME);
1710                         break;
1711                 // global global global
1712                 case OP_ADD_F:
1713                 case OP_ADD_V:
1714                 case OP_SUB_F:
1715                 case OP_SUB_V:
1716                 case OP_MUL_F:
1717                 case OP_MUL_V:
1718                 case OP_MUL_FV:
1719                 case OP_MUL_VF:
1720                 case OP_DIV_F:
1721                 case OP_BITAND:
1722                 case OP_BITOR:
1723                 case OP_GE:
1724                 case OP_LE:
1725                 case OP_GT:
1726                 case OP_LT:
1727                 case OP_AND:
1728                 case OP_OR:
1729                 case OP_EQ_F:
1730                 case OP_EQ_V:
1731                 case OP_EQ_S:
1732                 case OP_EQ_E:
1733                 case OP_EQ_FNC:
1734                 case OP_NE_F:
1735                 case OP_NE_V:
1736                 case OP_NE_S:
1737                 case OP_NE_E:
1738                 case OP_NE_FNC:
1739                 case OP_ADDRESS:
1740                 case OP_LOAD_F:
1741                 case OP_LOAD_FLD:
1742                 case OP_LOAD_ENT:
1743                 case OP_LOAD_S:
1744                 case OP_LOAD_FNC:
1745                 case OP_LOAD_V:
1746                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1747                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d)", i);
1748                         break;
1749                 // global none global
1750                 case OP_NOT_F:
1751                 case OP_NOT_V:
1752                 case OP_NOT_S:
1753                 case OP_NOT_FNC:
1754                 case OP_NOT_ENT:
1755                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1756                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1757                         break;
1758                 // 2 globals
1759                 case OP_STOREP_F:
1760                 case OP_STOREP_ENT:
1761                 case OP_STOREP_FLD:
1762                 case OP_STOREP_S:
1763                 case OP_STOREP_FNC:
1764                 case OP_STORE_F:
1765                 case OP_STORE_ENT:
1766                 case OP_STORE_FLD:
1767                 case OP_STORE_S:
1768                 case OP_STORE_FNC:
1769                 case OP_STATE:
1770                 case OP_STOREP_V:
1771                 case OP_STORE_V:
1772                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals)
1773                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1774                         break;
1775                 // 1 global
1776                 case OP_CALL0:
1777                 case OP_CALL1:
1778                 case OP_CALL2:
1779                 case OP_CALL3:
1780                 case OP_CALL4:
1781                 case OP_CALL5:
1782                 case OP_CALL6:
1783                 case OP_CALL7:
1784                 case OP_CALL8:
1785                 case OP_DONE:
1786                 case OP_RETURN:
1787                         if ((unsigned short) st->a >= prog->progs->numglobals)
1788                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1789                         break;
1790                 default:
1791                         Con_DPrintf("PRVM_LoadProgs: unknown opcode %d at statement %d in %s\n", st->op, i, PRVM_NAME);
1792                         break;
1793                 }
1794         }
1795
1796         PRVM_LoadLNO(filename);
1797
1798         PRVM_Init_Exec();
1799
1800         prog->loaded = TRUE;
1801
1802         // set flags & ddef_ts in prog
1803
1804         prog->flag = 0;
1805
1806         PRVM_FindOffsets();
1807
1808         PRVM_GCALL(init_cmd)();
1809
1810         // init mempools
1811         PRVM_MEM_Alloc();
1812 }
1813
1814
1815 void PRVM_Fields_f (void)
1816 {
1817         int i, j, ednum, used, usedamount;
1818         int *counts;
1819         char tempstring[MAX_INPUTLINE], tempstring2[260];
1820         const char *name;
1821         prvm_edict_t *ed;
1822         ddef_t *d;
1823         int *v;
1824
1825         // TODO
1826         /*
1827         if (!sv.active)
1828         {
1829                 Con_Print("no progs loaded\n");
1830                 return;
1831         }
1832         */
1833
1834         if(Cmd_Argc() != 2)
1835         {
1836                 Con_Print("prvm_fields <program name>\n");
1837                 return;
1838         }
1839
1840         PRVM_Begin;
1841         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1842                 return;
1843
1844         counts = (int *)Mem_Alloc(tempmempool, prog->progs->numfielddefs * sizeof(int));
1845         for (ednum = 0;ednum < prog->max_edicts;ednum++)
1846         {
1847                 ed = PRVM_EDICT_NUM(ednum);
1848                 if (ed->priv.required->free)
1849                         continue;
1850                 for (i = 1;i < prog->progs->numfielddefs;i++)
1851                 {
1852                         d = &prog->fielddefs[i];
1853                         name = PRVM_GetString(d->s_name);
1854                         if (name[strlen(name)-2] == '_')
1855                                 continue;       // skip _x, _y, _z vars
1856                         v = (int *)((char *)ed->fields.vp + d->ofs*4);
1857                         // if the value is still all 0, skip the field
1858                         for (j = 0;j < prvm_type_size[d->type & ~DEF_SAVEGLOBAL];j++)
1859                         {
1860                                 if (v[j])
1861                                 {
1862                                         counts[i]++;
1863                                         break;
1864                                 }
1865                         }
1866                 }
1867         }
1868         used = 0;
1869         usedamount = 0;
1870         tempstring[0] = 0;
1871         for (i = 0;i < prog->progs->numfielddefs;i++)
1872         {
1873                 d = &prog->fielddefs[i];
1874                 name = PRVM_GetString(d->s_name);
1875                 if (name[strlen(name)-2] == '_')
1876                         continue;       // skip _x, _y, _z vars
1877                 switch(d->type & ~DEF_SAVEGLOBAL)
1878                 {
1879                 case ev_string:
1880                         strlcat(tempstring, "string   ", sizeof(tempstring));
1881                         break;
1882                 case ev_entity:
1883                         strlcat(tempstring, "entity   ", sizeof(tempstring));
1884                         break;
1885                 case ev_function:
1886                         strlcat(tempstring, "function ", sizeof(tempstring));
1887                         break;
1888                 case ev_field:
1889                         strlcat(tempstring, "field    ", sizeof(tempstring));
1890                         break;
1891                 case ev_void:
1892                         strlcat(tempstring, "void     ", sizeof(tempstring));
1893                         break;
1894                 case ev_float:
1895                         strlcat(tempstring, "float    ", sizeof(tempstring));
1896                         break;
1897                 case ev_vector:
1898                         strlcat(tempstring, "vector   ", sizeof(tempstring));
1899                         break;
1900                 case ev_pointer:
1901                         strlcat(tempstring, "pointer  ", sizeof(tempstring));
1902                         break;
1903                 default:
1904                         sprintf (tempstring2, "bad type %i ", d->type & ~DEF_SAVEGLOBAL);
1905                         strlcat(tempstring, tempstring2, sizeof(tempstring));
1906                         break;
1907                 }
1908                 if (strlen(name) > sizeof(tempstring2)-4)
1909                 {
1910                         memcpy (tempstring2, name, sizeof(tempstring2)-4);
1911                         tempstring2[sizeof(tempstring2)-4] = tempstring2[sizeof(tempstring2)-3] = tempstring2[sizeof(tempstring2)-2] = '.';
1912                         tempstring2[sizeof(tempstring2)-1] = 0;
1913                         name = tempstring2;
1914                 }
1915                 strlcat(tempstring, name, sizeof(tempstring));
1916                 for (j = (int)strlen(name);j < 25;j++)
1917                         strlcat(tempstring, " ", sizeof(tempstring));
1918                 sprintf(tempstring2, "%5d", counts[i]);
1919                 strlcat(tempstring, tempstring2, sizeof(tempstring));
1920                 strlcat(tempstring, "\n", sizeof(tempstring));
1921                 if (strlen(tempstring) >= sizeof(tempstring)/2)
1922                 {
1923                         Con_Print(tempstring);
1924                         tempstring[0] = 0;
1925                 }
1926                 if (counts[i])
1927                 {
1928                         used++;
1929                         usedamount += prvm_type_size[d->type & ~DEF_SAVEGLOBAL];
1930                 }
1931         }
1932         Mem_Free(counts);
1933         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);
1934
1935         PRVM_End;
1936 }
1937
1938 void PRVM_Globals_f (void)
1939 {
1940         int i;
1941         const char *wildcard;
1942         int numculled;
1943                 numculled = 0;
1944         // TODO
1945         /*if (!sv.active)
1946         {
1947                 Con_Print("no progs loaded\n");
1948                 return;
1949         }*/
1950         if(Cmd_Argc () < 2 || Cmd_Argc() > 3)
1951         {
1952                 Con_Print("prvm_globals <program name> <optional name wildcard>\n");
1953                 return;
1954         }
1955
1956         PRVM_Begin;
1957         if(!PRVM_SetProgFromString (Cmd_Argv (1)))
1958                 return;
1959
1960         if( Cmd_Argc() == 3)
1961                 wildcard = Cmd_Argv(2);
1962         else
1963                 wildcard = NULL;
1964
1965         Con_Printf("%s :", PRVM_NAME);
1966
1967         for (i = 0;i < prog->progs->numglobaldefs;i++)
1968         {
1969                 if(wildcard)
1970                         if( !matchpattern( PRVM_GetString(prog->globaldefs[i].s_name), wildcard, 1) )
1971                         {
1972                                 numculled++;
1973                                 continue;
1974                         }
1975                 Con_Printf("%s\n", PRVM_GetString(prog->globaldefs[i].s_name));
1976         }
1977         Con_Printf("%i global variables, %i culled, totalling %i bytes\n", prog->progs->numglobals, numculled, prog->progs->numglobals * 4);
1978
1979         PRVM_End;
1980 }
1981
1982 /*
1983 ===============
1984 PRVM_Global
1985 ===============
1986 */
1987 void PRVM_Global_f(void)
1988 {
1989         ddef_t *global;
1990         if( Cmd_Argc() != 3 ) {
1991                 Con_Printf( "prvm_global <program name> <global name>\n" );
1992                 return;
1993         }
1994
1995         PRVM_Begin;
1996         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1997                 return;
1998
1999         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
2000         if( !global )
2001                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
2002         else
2003                 Con_Printf( "%s: %s\n", Cmd_Argv(2), PRVM_ValueString( (etype_t)global->type, (prvm_eval_t *) &prog->globals.generic[ global->ofs ] ) );
2004         PRVM_End;
2005 }
2006
2007 /*
2008 ===============
2009 PRVM_GlobalSet
2010 ===============
2011 */
2012 void PRVM_GlobalSet_f(void)
2013 {
2014         ddef_t *global;
2015         if( Cmd_Argc() != 4 ) {
2016                 Con_Printf( "prvm_globalset <program name> <global name> <value>\n" );
2017                 return;
2018         }
2019
2020         PRVM_Begin;
2021         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
2022                 return;
2023
2024         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
2025         if( !global )
2026                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
2027         else
2028                 PRVM_ED_ParseEpair( NULL, global, Cmd_Argv(3) );
2029         PRVM_End;
2030 }
2031
2032 /*
2033 ===============
2034 PRVM_Init
2035 ===============
2036 */
2037 void PRVM_Init (void)
2038 {
2039         Cmd_AddCommand ("prvm_edict", PRVM_ED_PrintEdict_f, "print all data about an entity number in the selected VM (server, client, menu)");
2040         Cmd_AddCommand ("prvm_edicts", PRVM_ED_PrintEdicts_f, "prints all data about all entities in the selected VM (server, client, menu)");
2041         Cmd_AddCommand ("prvm_edictcount", PRVM_ED_Count_f, "prints number of active entities in the selected VM (server, client, menu)");
2042         Cmd_AddCommand ("prvm_profile", PRVM_Profile_f, "prints execution statistics about the most used QuakeC functions in the selected VM (server, client, menu)");
2043         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)");
2044         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)");
2045         Cmd_AddCommand ("prvm_globals", PRVM_Globals_f, "prints all global variables in the selected VM (server, client, menu)");
2046         Cmd_AddCommand ("prvm_global", PRVM_Global_f, "prints value of a specified global variable in the selected VM (server, client, menu)");
2047         Cmd_AddCommand ("prvm_globalset", PRVM_GlobalSet_f, "sets value of a specified global variable in the selected VM (server, client, menu)");
2048         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)");
2049         Cmd_AddCommand ("prvm_printfunction", PRVM_PrintFunction_f, "prints a disassembly (QuakeC instructions) of the specified function in the selected VM (server, client, menu)");
2050         Cmd_AddCommand ("cl_cmd", PRVM_GameCommand_Client_f, "calls the client QC function GameCommand with the supplied string as argument");
2051         Cmd_AddCommand ("menu_cmd", PRVM_GameCommand_Menu_f, "calls the menu QC function GameCommand with the supplied string as argument");
2052         Cmd_AddCommand ("sv_cmd", PRVM_GameCommand_Server_f, "calls the server QC function GameCommand with the supplied string as argument");
2053         // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
2054 #ifdef PRVM_BOUNDSCHECK_CVAR
2055         Cvar_RegisterVariable (&prvm_boundscheck);
2056 #endif
2057         Cvar_RegisterVariable (&prvm_traceqc);
2058         Cvar_RegisterVariable (&prvm_statementprofiling);
2059         Cvar_RegisterVariable (&prvm_backtraceforwarnings);
2060
2061         //VM_Cmd_Init();
2062 }
2063
2064 /*
2065 ===============
2066 PRVM_InitProg
2067 ===============
2068 */
2069 void PRVM_InitProg(int prognr)
2070 {
2071         if(prognr < 0 || prognr >= PRVM_MAXPROGS)
2072                 Sys_Error("PRVM_InitProg: Invalid program number %i",prognr);
2073
2074         prog = &prog_list[prognr];
2075
2076         if(prog->loaded)
2077                 PRVM_ResetProg();
2078
2079         memset(prog, 0, sizeof(prvm_prog_t));
2080         prog->starttime = Sys_DoubleTime();
2081
2082         prog->error_cmd = Host_Error;
2083 }
2084
2085 int PRVM_GetProgNr()
2086 {
2087         return prog - prog_list;
2088 }
2089
2090 void *_PRVM_Alloc(size_t buffersize, const char *filename, int fileline)
2091 {
2092         return _Mem_Alloc(prog->progs_mempool, buffersize, filename, fileline);
2093 }
2094
2095 void _PRVM_Free(void *buffer, const char *filename, int fileline)
2096 {
2097         _Mem_Free(buffer, filename, fileline);
2098 }
2099
2100 void _PRVM_FreeAll(const char *filename, int fileline)
2101 {
2102         prog->progs = NULL;
2103         prog->fielddefs = NULL;
2104         prog->functions = NULL;
2105         _Mem_EmptyPool(prog->progs_mempool, filename, fileline);
2106 }
2107
2108 // LordHavoc: turned PRVM_EDICT_NUM into a #define for speed reasons
2109 prvm_edict_t *PRVM_EDICT_NUM_ERROR(int n, char *filename, int fileline)
2110 {
2111         PRVM_ERROR ("PRVM_EDICT_NUM: %s: bad number %i (called at %s:%i)", PRVM_NAME, n, filename, fileline);
2112         return NULL;
2113 }
2114
2115 /*
2116 int NUM_FOR_EDICT_ERROR(prvm_edict_t *e)
2117 {
2118         PRVM_ERROR ("PRVM_NUM_FOR_EDICT: bad pointer %p (world is %p, entity number would be %i)", e, prog->edicts, e - prog->edicts);
2119         return 0;
2120 }
2121
2122 int PRVM_NUM_FOR_EDICT(prvm_edict_t *e)
2123 {
2124         int n;
2125         n = e - prog->edicts;
2126         if ((unsigned int)n >= prog->limit_edicts)
2127                 Host_Error ("PRVM_NUM_FOR_EDICT: bad pointer");
2128         return n;
2129 }
2130
2131 //int NoCrash_NUM_FOR_EDICT(prvm_edict_t *e)
2132 //{
2133 //      return e - prog->edicts;
2134 //}
2135
2136 //#define       PRVM_EDICT_TO_PROG(e) ((unsigned char *)(((prvm_edict_t *)e)->v) - (unsigned char *)(prog->edictsfields))
2137 //#define PRVM_PROG_TO_EDICT(e) (prog->edicts + ((e) / (progs->entityfields * 4)))
2138 int PRVM_EDICT_TO_PROG(prvm_edict_t *e)
2139 {
2140         int n;
2141         n = e - prog->edicts;
2142         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
2143                 Host_Error("PRVM_EDICT_TO_PROG: invalid edict %8p (number %i compared to world at %8p)", e, n, prog->edicts);
2144         return n;// EXPERIMENTAL
2145         //return (unsigned char *)e->v - (unsigned char *)prog->edictsfields;
2146 }
2147 prvm_edict_t *PRVM_PROG_TO_EDICT(int n)
2148 {
2149         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
2150                 Host_Error("PRVM_PROG_TO_EDICT: invalid edict number %i", n);
2151         return prog->edicts + n; // EXPERIMENTAL
2152         //return prog->edicts + ((n) / (progs->entityfields * 4));
2153 }
2154 */
2155
2156
2157 sizebuf_t vm_tempstringsbuf;
2158
2159 const char *PRVM_GetString(int num)
2160 {
2161         if (num >= 0)
2162         {
2163                 if (num < prog->stringssize)
2164                         return prog->strings + num;
2165                 else
2166 #if 1
2167                 if (num <= prog->stringssize + vm_tempstringsbuf.maxsize)
2168                 {
2169                         num -= prog->stringssize;
2170                         if (num < vm_tempstringsbuf.cursize)
2171                                 return (char *)vm_tempstringsbuf.data + num;
2172                         else
2173                         {
2174                                 VM_Warning("PRVM_GetString: Invalid temp-string offset (%i >= %i vm_tempstringsbuf.cursize)\n", num, vm_tempstringsbuf.cursize);
2175                                 return "";
2176                         }
2177                 }
2178                 else
2179 #endif
2180                 {
2181                         VM_Warning("PRVM_GetString: Invalid constant-string offset (%i >= %i prog->stringssize)\n", num, prog->stringssize);
2182                         return "";
2183                 }
2184         }
2185         else
2186         {
2187                 num = -1 - num;
2188 #if 0
2189                 if (num >= (1<<30))
2190                 {
2191                         // special range reserved for tempstrings
2192                         num -= (1<<30);
2193                         if (num < vm_tempstringsbuf.cursize)
2194                                 return (char *)vm_tempstringsbuf.data + num;
2195                         else
2196                         {
2197                                 VM_Warning("PRVM_GetString: Invalid temp-string offset (%i >= %i vm_tempstringsbuf.cursize)\n", num, vm_tempstringsbuf.cursize);
2198                                 return "";
2199                         }
2200                 }
2201                 else
2202 #endif
2203                 if (num < prog->numknownstrings)
2204                 {
2205                         if (!prog->knownstrings[num])
2206                                 VM_Warning("PRVM_GetString: Invalid zone-string offset (%i has been freed)\n", num);
2207                         return prog->knownstrings[num];
2208                 }
2209                 else
2210                 {
2211                         VM_Warning("PRVM_GetString: Invalid zone-string offset (%i >= %i)\n", num, prog->numknownstrings);
2212                         return "";
2213                 }
2214         }
2215 }
2216
2217 int PRVM_SetEngineString(const char *s)
2218 {
2219         int i;
2220         if (!s)
2221                 return 0;
2222         if (s >= prog->strings && s <= prog->strings + prog->stringssize)
2223                 PRVM_ERROR("PRVM_SetEngineString: s in prog->strings area");
2224         // if it's in the tempstrings area, use a reserved range
2225         // (otherwise we'd get millions of useless string offsets cluttering the database)
2226         if (s >= (char *)vm_tempstringsbuf.data && s < (char *)vm_tempstringsbuf.data + vm_tempstringsbuf.maxsize)
2227 #if 1
2228                 return prog->stringssize + (s - (char *)vm_tempstringsbuf.data);
2229 #else
2230                 return -1 - ((1<<30) + (s - (char *)vm_tempstringsbuf.data));
2231 #endif
2232         // see if it's a known string address
2233         for (i = 0;i < prog->numknownstrings;i++)
2234                 if (prog->knownstrings[i] == s)
2235                         return -1 - i;
2236         // new unknown engine string
2237         if (developer.integer >= 200)
2238                 Con_Printf("new engine string %p = \"%s\"\n", s, s);
2239         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
2240                 if (!prog->knownstrings[i])
2241                         break;
2242         if (i >= prog->numknownstrings)
2243         {
2244                 if (i >= prog->maxknownstrings)
2245                 {
2246                         const char **oldstrings = prog->knownstrings;
2247                         const unsigned char *oldstrings_freeable = prog->knownstrings_freeable;
2248                         prog->maxknownstrings += 128;
2249                         prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
2250                         prog->knownstrings_freeable = (unsigned char *)PRVM_Alloc(prog->maxknownstrings * sizeof(unsigned char));
2251                         if (prog->numknownstrings)
2252                         {
2253                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
2254                                 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(unsigned char));
2255                         }
2256                 }
2257                 prog->numknownstrings++;
2258         }
2259         prog->firstfreeknownstring = i + 1;
2260         prog->knownstrings[i] = s;
2261         return -1 - i;
2262 }
2263
2264 // temp string handling
2265
2266 // all tempstrings go into this buffer consecutively, and it is reset
2267 // whenever PRVM_ExecuteProgram returns to the engine
2268 // (technically each PRVM_ExecuteProgram call saves the cursize value and
2269 //  restores it on return, so multiple recursive calls can share the same
2270 //  buffer)
2271 // the buffer size is automatically grown as needed
2272
2273 int PRVM_SetTempString(const char *s)
2274 {
2275         int size;
2276         char *t;
2277         if (!s)
2278                 return 0;
2279         size = (int)strlen(s) + 1;
2280         if (developer.integer >= 300)
2281                 Con_Printf("PRVM_SetTempString: cursize %i, size %i\n", vm_tempstringsbuf.cursize, size);
2282         if (vm_tempstringsbuf.maxsize < vm_tempstringsbuf.cursize + size)
2283         {
2284                 sizebuf_t old = vm_tempstringsbuf;
2285                 if (vm_tempstringsbuf.cursize + size >= 1<<28)
2286                         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);
2287                 vm_tempstringsbuf.maxsize = max(vm_tempstringsbuf.maxsize, 65536);
2288                 while (vm_tempstringsbuf.maxsize < vm_tempstringsbuf.cursize + size)
2289                         vm_tempstringsbuf.maxsize *= 2;
2290                 if (vm_tempstringsbuf.maxsize != old.maxsize || vm_tempstringsbuf.data == NULL)
2291                 {
2292                         if (developer.integer >= 100)
2293                                 Con_Printf("PRVM_SetTempString: enlarging tempstrings buffer (%iKB -> %iKB)\n", old.maxsize/1024, vm_tempstringsbuf.maxsize/1024);
2294                         vm_tempstringsbuf.data = Mem_Alloc(sv_mempool, vm_tempstringsbuf.maxsize);
2295                         if (old.cursize)
2296                                 memcpy(vm_tempstringsbuf.data, old.data, old.cursize);
2297                         if (old.data)
2298                                 Mem_Free(old.data);
2299                 }
2300         }
2301         t = (char *)vm_tempstringsbuf.data + vm_tempstringsbuf.cursize;
2302         memcpy(t, s, size);
2303         vm_tempstringsbuf.cursize += size;
2304         return PRVM_SetEngineString(t);
2305 }
2306
2307 int PRVM_AllocString(size_t bufferlength, char **pointer)
2308 {
2309         int i;
2310         if (!bufferlength)
2311                 return 0;
2312         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
2313                 if (!prog->knownstrings[i])
2314                         break;
2315         if (i >= prog->numknownstrings)
2316         {
2317                 if (i >= prog->maxknownstrings)
2318                 {
2319                         const char **oldstrings = prog->knownstrings;
2320                         const unsigned char *oldstrings_freeable = prog->knownstrings_freeable;
2321                         prog->maxknownstrings += 128;
2322                         prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
2323                         prog->knownstrings_freeable = (unsigned char *)PRVM_Alloc(prog->maxknownstrings * sizeof(unsigned char));
2324                         if (prog->numknownstrings)
2325                         {
2326                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
2327                                 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(unsigned char));
2328                         }
2329                 }
2330                 prog->numknownstrings++;
2331         }
2332         prog->firstfreeknownstring = i + 1;
2333         prog->knownstrings[i] = (char *)PRVM_Alloc(bufferlength);
2334         prog->knownstrings_freeable[i] = true;
2335         if (pointer)
2336                 *pointer = (char *)(prog->knownstrings[i]);
2337         return -1 - i;
2338 }
2339
2340 void PRVM_FreeString(int num)
2341 {
2342         if (num == 0)
2343                 PRVM_ERROR("PRVM_FreeString: attempt to free a NULL string");
2344         else if (num >= 0 && num < prog->stringssize)
2345                 PRVM_ERROR("PRVM_FreeString: attempt to free a constant string");
2346         else if (num < 0 && num >= -prog->numknownstrings)
2347         {
2348                 num = -1 - num;
2349                 if (!prog->knownstrings[num])
2350                         PRVM_ERROR("PRVM_FreeString: attempt to free a non-existent or already freed string");
2351                 if (!prog->knownstrings[num])
2352                         PRVM_ERROR("PRVM_FreeString: attempt to free a string owned by the engine");
2353                 PRVM_Free((char *)prog->knownstrings[num]);
2354                 prog->knownstrings[num] = NULL;
2355                 prog->knownstrings_freeable[num] = false;
2356                 prog->firstfreeknownstring = min(prog->firstfreeknownstring, num);
2357         }
2358         else
2359                 PRVM_ERROR("PRVM_FreeString: invalid string offset %i", num);
2360 }
2361