prvm_edict.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // AK new vm
  21
  22 #include "quakedef.h"
  23 #include "progsvm.h"
  24
  25 prvm_prog_t *prog;
  26
  27 static prvm_prog_t prog_list[PRVM_MAXPROGS];
  28
  29 int             prvm_type_size[8] = {1,sizeof(string_t)/4,1,3,1,1,sizeof(func_t)/4,sizeof(void *)/4};
  30
  31 ddef_t *PRVM_ED_FieldAtOfs(int ofs);
  32 qboolean PRVM_ED_ParseEpair(prvm_edict_t *ent, ddef_t *key, const char *s);
  33
  34 // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
  35 cvar_t  prvm_boundscheck = {0, "prvm_boundscheck", "1"};
  36 // LordHavoc: prints every opcode as it executes - warning: this is significant spew
  37 cvar_t  prvm_traceqc = {0, "prvm_traceqc", "0"};
  38
  39 //============================================================================
  40 // mempool handling
  41
  42 /*
  43 ===============
  44 PRVM_MEM_Alloc
  45 ===============
  46 */
  47 void PRVM_MEM_Alloc(void)
  48 {
  49         int i;
  50
  51         // reserve space for the null entity aka world
  52         // check bound of max_edicts
  53         prog->max_edicts = bound(1 + prog->reserved_edicts, prog->max_edicts, prog->limit_edicts);
  54         prog->num_edicts = bound(1 + prog->reserved_edicts, prog->num_edicts, prog->max_edicts);
  55
  56         // edictprivate_size has to be min as big prvm_edict_private_t
  57         prog->edictprivate_size = max(prog->edictprivate_size,(int)sizeof(prvm_edict_private_t));
  58
  59         // alloc edicts
  60         prog->edicts = (prvm_edict_t *)Mem_Alloc(prog->progs_mempool,prog->limit_edicts * sizeof(prvm_edict_t));
  61
  62         // alloc edict private space
  63         prog->edictprivate = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edictprivate_size);
  64
  65         // alloc edict fields
  66         prog->edictsfields = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edict_size);
  67
  68         // set edict pointers
  69         for(i = 0; i < prog->max_edicts; i++)
  70         {
  71                 prog->edicts[i].priv.required = (prvm_edict_private_t *)((qbyte  *)prog->edictprivate + i * prog->edictprivate_size);
  72                 prog->edicts[i].fields.vp = (void*)((qbyte *)prog->edictsfields + i * prog->edict_size);
  73         }
  74 }
  75
  76 /*
  77 ===============
  78 PRVM_MEM_IncreaseEdicts
  79 ===============
  80 */
  81 void PRVM_MEM_IncreaseEdicts(void)
  82 {
  83         int             i;
  84         int             oldmaxedicts = prog->max_edicts;
  85         void    *oldedictsfields = prog->edictsfields;
  86         void    *oldedictprivate = prog->edictprivate;
  87
  88         if(prog->max_edicts >= prog->limit_edicts)
  89                 return;
  90
  91         PRVM_GCALL(begin_increase_edicts)();
  92
  93         // increase edicts
  94         prog->max_edicts = min(prog->max_edicts + 256, prog->limit_edicts);
  95
  96         prog->edictsfields = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edict_size);
  97         prog->edictprivate = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edictprivate_size);
  98
  99         memcpy(prog->edictsfields, oldedictsfields, oldmaxedicts * prog->edict_size);
 100         memcpy(prog->edictprivate, oldedictprivate, oldmaxedicts * prog->edictprivate_size);
 101
 102         //set e and v pointers
 103         for(i = 0; i < prog->max_edicts; i++)
 104         {
 105                 prog->edicts[i].priv.required  = (prvm_edict_private_t *)((qbyte  *)prog->edictprivate + i * prog->edictprivate_size);
 106                 prog->edicts[i].fields.vp = (void*)((qbyte *)prog->edictsfields + i * prog->edict_size);
 107         }
 108
 109         PRVM_GCALL(end_increase_edicts)();
 110
 111         Mem_Free(oldedictsfields);
 112         Mem_Free(oldedictprivate);
 113 }
 114
 115 //============================================================================
 116 // normal prvm
 117
 118 int PRVM_ED_FindFieldOffset(const char *field)
 119 {
 120         ddef_t *d;
 121         d = PRVM_ED_FindField(field);
 122         if (!d)
 123                 return 0;
 124         return d->ofs*4;
 125 }
 126
 127 qboolean PRVM_ProgLoaded(int prognr)
 128 {
 129         if(prognr < 0 || prognr >= PRVM_MAXPROGS)
 130                 return FALSE;
 131
 132         return (prog_list[prognr].loaded ? TRUE : FALSE);
 133 }
 134
 135 /*
 136 =================
 137 PRVM_SetProgFromString
 138 =================
 139 */
 140 // perhaps add a return value when the str doesnt exist
 141 qboolean PRVM_SetProgFromString(const char *str)
 142 {
 143         int i = 0;
 144         for(; i < PRVM_MAXPROGS ; i++)
 145                 if(prog_list[i].name && !strcmp(prog_list[i].name,str))
 146                 {
 147                         if(prog_list[i].loaded)
 148                         {
 149                                 prog = &prog_list[i];
 150                                 return TRUE;
 151                         }
 152                         else
 153                         {
 154                                 Con_Printf("%s not loaded !\n",PRVM_NAME);
 155                                 return FALSE;
 156                         }
 157                 }
 158
 159         Con_Printf("Invalid program name %s !\n", str);
 160         return FALSE;
 161 }
 162
 163 /*
 164 =================
 165 PRVM_SetProg
 166 =================
 167 */
 168 void PRVM_SetProg(int prognr)
 169 {
 170         if(0 <= prognr && prognr < PRVM_MAXPROGS)
 171         {
 172                 if(prog_list[prognr].loaded)
 173                         prog = &prog_list[prognr];
 174                 else
 175                         PRVM_ERROR("%i not loaded !\n", prognr);
 176                 return;
 177         }
 178         PRVM_ERROR("Invalid program number %i\n", prognr);
 179 }
 180
 181 /*
 182 =================
 183 PRVM_ED_ClearEdict
 184
 185 Sets everything to NULL
 186 =================
 187 */
 188 void PRVM_ED_ClearEdict (prvm_edict_t *e)
 189 {
 190         memset (e->fields.vp, 0, prog->progs->entityfields * 4);
 191         e->priv.required->free = false;
 192
 193         // AK: Let the init_edict function determine if something needs to be initialized
 194         PRVM_GCALL(init_edict)(e);
 195 }
 196
 197 /*
 198 =================
 199 PRVM_ED_Alloc
 200
 201 Either finds a free edict, or allocates a new one.
 202 Try to avoid reusing an entity that was recently freed, because it
 203 can cause the client to think the entity morphed into something else
 204 instead of being removed and recreated, which can cause interpolated
 205 angles and bad trails.
 206 =================
 207 */
 208 prvm_edict_t *PRVM_ED_Alloc (void)
 209 {
 210         int                     i;
 211         prvm_edict_t            *e;
 212
 213         // the client qc dont need maxclients
 214         // thus it doesnt need to use svs.maxclients
 215         // AK:  changed i=svs.maxclients+1
 216         // AK:  changed so the edict 0 wont spawn -> used as reserved/world entity
 217         //              although the menu/client has no world
 218         for (i = prog->reserved_edicts + 1;i < prog->num_edicts;i++)
 219         {
 220                 e = PRVM_EDICT_NUM(i);
 221                 // the first couple seconds of server time can involve a lot of
 222                 // freeing and allocating, so relax the replacement policy
 223                 if (e->priv.required->free && ( e->priv.required->freetime < 2 || (*prog->time - e->priv.required->freetime) > 0.5 ) )
 224                 {
 225                         PRVM_ED_ClearEdict (e);
 226                         return e;
 227                 }
 228         }
 229
 230         if (i == prog->limit_edicts)
 231                 PRVM_ERROR ("%s: PRVM_ED_Alloc: no free edicts",PRVM_NAME);
 232
 233         prog->num_edicts++;
 234         if (prog->num_edicts >= prog->max_edicts)
 235                 PRVM_MEM_IncreaseEdicts();
 236
 237         e = PRVM_EDICT_NUM(i);
 238         PRVM_ED_ClearEdict (e);
 239
 240         return e;
 241 }
 242
 243 /*
 244 =================
 245 PRVM_ED_Free
 246
 247 Marks the edict as free
 248 FIXME: walk all entities and NULL out references to this entity
 249 =================
 250 */
 251 void PRVM_ED_Free (prvm_edict_t *ed)
 252 {
 253         // dont delete the null entity (world) or reserved edicts
 254         if(PRVM_NUM_FOR_EDICT(ed) <= prog->reserved_edicts )
 255                 return;
 256
 257         PRVM_GCALL(free_edict)(ed);
 258
 259         ed->priv.required->free = true;
 260         ed->priv.required->freetime = *prog->time;
 261 }
 262
 263 //===========================================================================
 264
 265 /*
 266 ============
 267 PRVM_ED_GlobalAtOfs
 268 ============
 269 */
 270 ddef_t *PRVM_ED_GlobalAtOfs (int ofs)
 271 {
 272         ddef_t          *def;
 273         int                     i;
 274
 275         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
 276         {
 277                 def = &prog->globaldefs[i];
 278                 if (def->ofs == ofs)
 279                         return def;
 280         }
 281         return NULL;
 282 }
 283
 284 /*
 285 ============
 286 PRVM_ED_FieldAtOfs
 287 ============
 288 */
 289 ddef_t *PRVM_ED_FieldAtOfs (int ofs)
 290 {
 291         ddef_t          *def;
 292         int                     i;
 293
 294         for (i=0 ; i<prog->progs->numfielddefs ; i++)
 295         {
 296                 def = &prog->fielddefs[i];
 297                 if (def->ofs == ofs)
 298                         return def;
 299         }
 300         return NULL;
 301 }
 302
 303 /*
 304 ============
 305 PRVM_ED_FindField
 306 ============
 307 */
 308 ddef_t *PRVM_ED_FindField (const char *name)
 309 {
 310         ddef_t *def;
 311         int i;
 312
 313         for (i=0 ; i<prog->progs->numfielddefs ; i++)
 314         {
 315                 def = &prog->fielddefs[i];
 316                 if (!strcmp(PRVM_GetString(def->s_name), name))
 317                         return def;
 318         }
 319         return NULL;
 320 }
 321
 322 /*
 323 ============
 324 PRVM_ED_FindGlobal
 325 ============
 326 */
 327 ddef_t *PRVM_ED_FindGlobal (const char *name)
 328 {
 329         ddef_t *def;
 330         int i;
 331
 332         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
 333         {
 334                 def = &prog->globaldefs[i];
 335                 if (!strcmp(PRVM_GetString(def->s_name), name))
 336                         return def;
 337         }
 338         return NULL;
 339 }
 340
 341
 342 /*
 343 ============
 344 PRVM_ED_FindFunction
 345 ============
 346 */
 347 mfunction_t *PRVM_ED_FindFunction (const char *name)
 348 {
 349         mfunction_t             *func;
 350         int                             i;
 351
 352         for (i=0 ; i<prog->progs->numfunctions ; i++)
 353         {
 354                 func = &prog->functions[i];
 355                 if (!strcmp(PRVM_GetString(func->s_name), name))
 356                         return func;
 357         }
 358         return NULL;
 359 }
 360
 361
 362 /*
 363 ============
 364 PRVM_ValueString
 365
 366 Returns a string describing *data in a type specific manner
 367 =============
 368 */
 369 char *PRVM_ValueString (etype_t type, prvm_eval_t *val)
 370 {
 371         static char line[1024]; // LordHavoc: enlarged a bit (was 256)
 372         ddef_t *def;
 373         mfunction_t *f;
 374         int n;
 375
 376         type = (etype_t)((int) type & ~DEF_SAVEGLOBAL);
 377
 378         switch (type)
 379         {
 380         case ev_string:
 381                 strlcpy (line, PRVM_GetString (val->string), sizeof (line));
 382                 break;
 383         case ev_entity:
 384                 n = val->edict;
 385                 if (n < 0 || n >= prog->limit_edicts)
 386                         sprintf (line, "entity %i (invalid!)", n);
 387                 else
 388                         sprintf (line, "entity %i", n);
 389                 break;
 390         case ev_function:
 391                 f = prog->functions + val->function;
 392                 sprintf (line, "%s()", PRVM_GetString(f->s_name));
 393                 break;
 394         case ev_field:
 395                 def = PRVM_ED_FieldAtOfs ( val->_int );
 396                 sprintf (line, ".%s", PRVM_GetString(def->s_name));
 397                 break;
 398         case ev_void:
 399                 sprintf (line, "void");
 400                 break;
 401         case ev_float:
 402                 // LordHavoc: changed from %5.1f to %10.4f
 403                 sprintf (line, "%10.4f", val->_float);
 404                 break;
 405         case ev_vector:
 406                 // LordHavoc: changed from %5.1f to %10.4f
 407                 sprintf (line, "'%10.4f %10.4f %10.4f'", val->vector[0], val->vector[1], val->vector[2]);
 408                 break;
 409         case ev_pointer:
 410                 sprintf (line, "pointer");
 411                 break;
 412         default:
 413                 sprintf (line, "bad type %i", type);
 414                 break;
 415         }
 416
 417         return line;
 418 }
 419
 420 /*
 421 ============
 422 PRVM_UglyValueString
 423
 424 Returns a string describing *data in a type specific manner
 425 Easier to parse than PR_ValueString
 426 =============
 427 */
 428 char *PRVM_UglyValueString (etype_t type, prvm_eval_t *val)
 429 {
 430         static char line[4096];
 431         int i;
 432         const char *s;
 433         ddef_t *def;
 434         mfunction_t *f;
 435
 436         type = (etype_t)((int)type & ~DEF_SAVEGLOBAL);
 437
 438         switch (type)
 439         {
 440         case ev_string:
 441                 // Parse the string a bit to turn special characters
 442                 // (like newline, specifically) into escape codes,
 443                 // this fixes saving games from various mods
 444                 s = PRVM_GetString (val->string);
 445                 for (i = 0;i < (int)sizeof(line) - 2 && *s;)
 446                 {
 447                         if (*s == '\n')
 448                         {
 449                                 line[i++] = '\\';
 450                                 line[i++] = 'n';
 451                         }
 452                         else if (*s == '\r')
 453                         {
 454                                 line[i++] = '\\';
 455                                 line[i++] = 'r';
 456                         }
 457                         else
 458                                 line[i++] = *s;
 459                         s++;
 460                 }
 461                 line[i] = '\0';
 462                 break;
 463         case ev_entity:
 464                 dpsnprintf (line, sizeof (line), "%i", PRVM_NUM_FOR_EDICT(PRVM_PROG_TO_EDICT(val->edict)));
 465                 break;
 466         case ev_function:
 467                 f = prog->functions + val->function;
 468                 strlcpy (line, PRVM_GetString (f->s_name), sizeof (line));
 469                 break;
 470         case ev_field:
 471                 def = PRVM_ED_FieldAtOfs ( val->_int );
 472                 dpsnprintf (line, sizeof (line), ".%s", PRVM_GetString(def->s_name));
 473                 break;
 474         case ev_void:
 475                 dpsnprintf (line, sizeof (line), "void");
 476                 break;
 477         case ev_float:
 478                 dpsnprintf (line, sizeof (line), "%f", val->_float);
 479                 break;
 480         case ev_vector:
 481                 dpsnprintf (line, sizeof (line), "%f %f %f", val->vector[0], val->vector[1], val->vector[2]);
 482                 break;
 483         default:
 484                 dpsnprintf (line, sizeof (line), "bad type %i", type);
 485                 break;
 486         }
 487
 488         return line;
 489 }
 490
 491 /*
 492 ============
 493 PRVM_GlobalString
 494
 495 Returns a string with a description and the contents of a global,
 496 padded to 20 field width
 497 ============
 498 */
 499 char *PRVM_GlobalString (int ofs)
 500 {
 501         char    *s;
 502         size_t  i;
 503         ddef_t  *def;
 504         void    *val;
 505         static char     line[128];
 506
 507         val = (void *)&prog->globals.generic[ofs];
 508         def = PRVM_ED_GlobalAtOfs(ofs);
 509         if (!def)
 510                 sprintf (line,"%i(?)", ofs);
 511         else
 512         {
 513                 s = PRVM_ValueString ((etype_t)def->type, (prvm_eval_t *)val);
 514                 sprintf (line,"%i(%s)%s", ofs, PRVM_GetString(def->s_name), s);
 515         }
 516
 517         i = strlen(line);
 518         for ( ; i<20 ; i++)
 519                 strcat (line," ");
 520         strcat (line," ");
 521
 522         return line;
 523 }
 524
 525 char *PRVM_GlobalStringNoContents (int ofs)
 526 {
 527         size_t  i;
 528         ddef_t  *def;
 529         static char     line[128];
 530
 531         def = PRVM_ED_GlobalAtOfs(ofs);
 532         if (!def)
 533                 sprintf (line,"%i(?)", ofs);
 534         else
 535                 sprintf (line,"%i(%s)", ofs, PRVM_GetString(def->s_name));
 536
 537         i = strlen(line);
 538         for ( ; i<20 ; i++)
 539                 strcat (line," ");
 540         strcat (line," ");
 541
 542         return line;
 543 }
 544
 545
 546 /*
 547 =============
 548 PRVM_ED_Print
 549
 550 For debugging
 551 =============
 552 */
 553 // LordHavoc: optimized this to print out much more quickly (tempstring)
 554 // LordHavoc: changed to print out every 4096 characters (incase there are a lot of fields to print)
 555 void PRVM_ED_Print(prvm_edict_t *ed)
 556 {
 557         size_t  l;
 558         ddef_t  *d;
 559         int             *v;
 560         int             i, j;
 561         const char      *name;
 562         int             type;
 563         char    tempstring[8192], tempstring2[260]; // temporary string buffers
 564
 565         if (ed->priv.required->free)
 566         {
 567                 Con_Printf("%s: FREE\n",PRVM_NAME);
 568                 return;
 569         }
 570
 571         tempstring[0] = 0;
 572         sprintf(tempstring, "\n%s EDICT %i:\n", PRVM_NAME, PRVM_NUM_FOR_EDICT(ed));
 573         for (i=1 ; i<prog->progs->numfielddefs ; i++)
 574         {
 575                 d = &prog->fielddefs[i];
 576                 name = PRVM_GetString(d->s_name);
 577                 if (name[strlen(name)-2] == '_')
 578                         continue;       // skip _x, _y, _z vars
 579
 580                 v = (int *)((char *)ed->fields.vp + d->ofs*4);
 581
 582         // if the value is still all 0, skip the field
 583                 type = d->type & ~DEF_SAVEGLOBAL;
 584
 585                 for (j=0 ; j<prvm_type_size[type] ; j++)
 586                         if (v[j])
 587                                 break;
 588                 if (j == prvm_type_size[type])
 589                         continue;
 590
 591                 if (strlen(name) > 256)
 592                 {
 593                         memcpy (tempstring2, name, 256);
 594                         tempstring2[256] = tempstring2[257] = tempstring2[258] = '.';
 595                         tempstring2[259] = 0;
 596                         name = tempstring2;
 597                 }
 598                 strcat(tempstring, name);
 599                 for (l = strlen(name);l < 14;l++)
 600                         strcat(tempstring, " ");
 601                 strcat(tempstring, " ");
 602
 603                 name = PRVM_ValueString((etype_t)d->type, (prvm_eval_t *)v);
 604                 if (strlen(name) > 256)
 605                 {
 606                         memcpy (tempstring2, name, 256);
 607                         tempstring2[256] = tempstring2[257] = tempstring2[258] = '.';
 608                         tempstring2[259] = 0;
 609                         name = tempstring2;
 610                 }
 611                 strcat(tempstring, name);
 612                 strcat(tempstring, "\n");
 613                 if (strlen(tempstring) >= 4096)
 614                 {
 615                         Con_Print(tempstring);
 616                         tempstring[0] = 0;
 617                 }
 618         }
 619         if (tempstring[0])
 620                 Con_Print(tempstring);
 621 }
 622
 623 /*
 624 =============
 625 PRVM_ED_Write
 626
 627 For savegames
 628 =============
 629 */
 630 void PRVM_ED_Write (qfile_t *f, prvm_edict_t *ed)
 631 {
 632         ddef_t  *d;
 633         int             *v;
 634         int             i, j;
 635         const char      *name;
 636         int             type;
 637
 638         FS_Print(f, "{\n");
 639
 640         if (ed->priv.required->free)
 641         {
 642                 FS_Print(f, "}\n");
 643                 return;
 644         }
 645
 646         for (i=1 ; i<prog->progs->numfielddefs ; i++)
 647         {
 648                 d = &prog->fielddefs[i];
 649                 name = PRVM_GetString(d->s_name);
 650                 if (name[strlen(name)-2] == '_')
 651                         continue;       // skip _x, _y, _z vars
 652
 653                 v = (int *)((char *)ed->fields.vp + d->ofs*4);
 654
 655         // if the value is still all 0, skip the field
 656                 type = d->type & ~DEF_SAVEGLOBAL;
 657                 for (j=0 ; j<prvm_type_size[type] ; j++)
 658                         if (v[j])
 659                                 break;
 660                 if (j == prvm_type_size[type])
 661                         continue;
 662
 663                 FS_Printf(f,"\"%s\" ",name);
 664                 FS_Printf(f,"\"%s\"\n", PRVM_UglyValueString((etype_t)d->type, (prvm_eval_t *)v));
 665         }
 666
 667         FS_Print(f, "}\n");
 668 }
 669
 670 void PRVM_ED_PrintNum (int ent)
 671 {
 672         PRVM_ED_Print(PRVM_EDICT_NUM(ent));
 673 }
 674
 675 /*
 676 =============
 677 PRVM_ED_PrintEdicts_f
 678
 679 For debugging, prints all the entities in the current server
 680 =============
 681 */
 682 void PRVM_ED_PrintEdicts_f (void)
 683 {
 684         int             i;
 685
 686         if(Cmd_Argc() != 2)
 687         {
 688                 Con_Print("prvm_edicts <program name>\n");
 689                 return;
 690         }
 691
 692         PRVM_Begin;
 693         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 694                 return;
 695
 696         Con_Printf("%s: %i entities\n", PRVM_NAME, prog->num_edicts);
 697         for (i=0 ; i<prog->num_edicts ; i++)
 698                 PRVM_ED_PrintNum (i);
 699
 700         PRVM_End;
 701 }
 702
 703 /*
 704 =============
 705 PRVM_ED_PrintEdict_f
 706
 707 For debugging, prints a single edict
 708 =============
 709 */
 710 void PRVM_ED_PrintEdict_f (void)
 711 {
 712         int             i;
 713
 714         if(Cmd_Argc() != 3)
 715         {
 716                 Con_Print("prvm_edict <program name> <edict number>\n");
 717                 return;
 718         }
 719
 720         PRVM_Begin;
 721         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 722                 return;
 723
 724         i = atoi (Cmd_Argv(2));
 725         if (i >= prog->num_edicts)
 726         {
 727                 Con_Print("Bad edict number\n");
 728                 PRVM_End;
 729                 return;
 730         }
 731         PRVM_ED_PrintNum (i);
 732
 733         PRVM_End;
 734 }
 735
 736 /*
 737 =============
 738 PRVM_ED_Count
 739
 740 For debugging
 741 =============
 742 */
 743 // 2 possibilities : 1. just displaying the active edict count
 744 //                                       2. making a function pointer [x]
 745 void PRVM_ED_Count_f (void)
 746 {
 747         int             i;
 748         prvm_edict_t    *ent;
 749         int             active;
 750
 751         if(Cmd_Argc() != 2)
 752         {
 753                 Con_Print("prvm_count <program name>\n");
 754                 return;
 755         }
 756
 757         PRVM_Begin;
 758         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 759                 return;
 760
 761         if(prog->count_edicts)
 762                 prog->count_edicts();
 763         else
 764         {
 765                 active = 0;
 766                 for (i=0 ; i<prog->num_edicts ; i++)
 767                 {
 768                         ent = PRVM_EDICT_NUM(i);
 769                         if (ent->priv.required->free)
 770                                 continue;
 771                         active++;
 772                 }
 773
 774                 Con_Printf("num_edicts:%3i\n", prog->num_edicts);
 775                 Con_Printf("active    :%3i\n", active);
 776         }
 777
 778         PRVM_End;
 779 }
 780
 781 /*
 782 ==============================================================================
 783
 784                                         ARCHIVING GLOBALS
 785
 786 FIXME: need to tag constants, doesn't really work
 787 ==============================================================================
 788 */
 789
 790 /*
 791 =============
 792 PRVM_ED_WriteGlobals
 793 =============
 794 */
 795 void PRVM_ED_WriteGlobals (qfile_t *f)
 796 {
 797         ddef_t          *def;
 798         int                     i;
 799         const char              *name;
 800         int                     type;
 801
 802         FS_Print(f,"{\n");
 803         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
 804         {
 805                 def = &prog->globaldefs[i];
 806                 type = def->type;
 807                 if ( !(def->type & DEF_SAVEGLOBAL) )
 808                         continue;
 809                 type &= ~DEF_SAVEGLOBAL;
 810
 811                 if (type != ev_string && type != ev_float && type != ev_entity)
 812                         continue;
 813
 814                 name = PRVM_GetString(def->s_name);
 815                 FS_Printf(f,"\"%s\" ", name);
 816                 FS_Printf(f,"\"%s\"\n", PRVM_UglyValueString((etype_t)type, (prvm_eval_t *)&prog->globals.generic[def->ofs]));
 817         }
 818         FS_Print(f,"}\n");
 819 }
 820
 821 /*
 822 =============
 823 PRVM_ED_ParseGlobals
 824 =============
 825 */
 826 void PRVM_ED_ParseGlobals (const char *data)
 827 {
 828         char keyname[1024]; // LordHavoc: good idea? bad idea?  was 64
 829         ddef_t *key;
 830
 831         while (1)
 832         {
 833                 // parse key
 834                 if (!COM_ParseToken(&data, false))
 835                         PRVM_ERROR ("PRVM_ED_ParseEntity: EOF without closing brace");
 836                 if (com_token[0] == '}')
 837                         break;
 838
 839                 strcpy (keyname, com_token);
 840
 841                 // parse value
 842                 if (!COM_ParseToken(&data, false))
 843                         PRVM_ERROR ("PRVM_ED_ParseEntity: EOF without closing brace");
 844
 845                 if (com_token[0] == '}')
 846                         PRVM_ERROR ("PRVM_ED_ParseEntity: closing brace without data");
 847
 848                 key = PRVM_ED_FindGlobal (keyname);
 849                 if (!key)
 850                 {
 851                         Con_DPrintf("'%s' is not a global on %s\n", keyname, PRVM_NAME);
 852                         continue;
 853                 }
 854
 855                 if (!PRVM_ED_ParseEpair(NULL, key, com_token))
 856                         PRVM_ERROR ("PRVM_ED_ParseGlobals: parse error");
 857         }
 858 }
 859
 860 //============================================================================
 861
 862
 863 /*
 864 =============
 865 PRVM_ED_ParseEval
 866
 867 Can parse either fields or globals
 868 returns false if error
 869 =============
 870 */
 871 qboolean PRVM_ED_ParseEpair(prvm_edict_t *ent, ddef_t *key, const char *s)
 872 {
 873         int i, l;
 874         char *new_p;
 875         ddef_t *def;
 876         prvm_eval_t *val;
 877         mfunction_t *func;
 878
 879         if (ent)
 880                 val = (prvm_eval_t *)((int *)ent->fields.vp + key->ofs);
 881         else
 882                 val = (prvm_eval_t *)((int *)prog->globals.generic + key->ofs);
 883         switch (key->type & ~DEF_SAVEGLOBAL)
 884         {
 885         case ev_string:
 886                 l = (int)strlen(s) + 1;
 887                 val->string = PRVM_AllocString(l, &new_p);
 888                 for (i = 0;i < l;i++)
 889                 {
 890                         if (s[i] == '\\' && i < l-1)
 891                         {
 892                                 i++;
 893                                 if (s[i] == 'n')
 894                                         *new_p++ = '\n';
 895                                 else if (s[i] == 'r')
 896                                         *new_p++ = '\r';
 897                                 else
 898                                         *new_p++ = s[i];
 899                         }
 900                         else
 901                                 *new_p++ = s[i];
 902                 }
 903                 break;
 904
 905         case ev_float:
 906                 while (*s && *s <= ' ')
 907                         s++;
 908                 val->_float = atof(s);
 909                 break;
 910
 911         case ev_vector:
 912                 for (i = 0;i < 3;i++)
 913                 {
 914                         while (*s && *s <= ' ')
 915                                 s++;
 916                         if (!*s)
 917                                 break;
 918                         val->vector[i] = atof(s);
 919                         while (*s > ' ')
 920                                 s++;
 921                         if (!*s)
 922                                 break;
 923                 }
 924                 break;
 925
 926         case ev_entity:
 927                 while (*s && *s <= ' ')
 928                         s++;
 929                 i = atoi(s);
 930                 if (i >= prog->limit_edicts)
 931                         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);
 932                 while (i >= prog->max_edicts)
 933                         PRVM_MEM_IncreaseEdicts();
 934                         //SV_IncreaseEdicts();
 935                 // if SV_IncreaseEdicts was called the base pointer needs to be updated
 936                 if (ent)
 937                         val = (prvm_eval_t *)((int *)ent->fields.vp + key->ofs);
 938                 val->edict = PRVM_EDICT_TO_PROG(PRVM_EDICT_NUM((int)i));
 939                 break;
 940
 941         case ev_field:
 942                 def = PRVM_ED_FindField(s);
 943                 if (!def)
 944                 {
 945                         Con_DPrintf("PRVM_ED_ParseEpair: Can't find field %s in %s\n", s, PRVM_NAME);
 946                         return false;
 947                 }
 948                 val->_int = def->ofs;
 949                 break;
 950
 951         case ev_function:
 952                 func = PRVM_ED_FindFunction(s);
 953                 if (!func)
 954                 {
 955                         Con_Printf("PRVM_ED_ParseEpair: Can't find function %s in %s\n", s, PRVM_NAME);
 956                         return false;
 957                 }
 958                 val->function = func - prog->functions;
 959                 break;
 960
 961         default:
 962                 Con_Printf("PRVM_ED_ParseEpair: Unknown key->type %i for key \"%s\" on %s\n", key->type, PRVM_GetString(key->s_name), PRVM_NAME);
 963                 return false;
 964         }
 965         return true;
 966 }
 967
 968 /*
 969 =============
 970 PRVM_ED_EdictSet_f
 971
 972 Console command to set a field of a specified edict
 973 =============
 974 */
 975 void PRVM_ED_EdictSet_f(void)
 976 {
 977         prvm_edict_t *ed;
 978         ddef_t *key;
 979
 980         if(Cmd_Argc() != 5)
 981         {
 982                 Con_Print("prvm_edictset <program name> <edict number> <field> <value>\n");
 983                 return;
 984         }
 985
 986         PRVM_Begin;
 987         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 988         {
 989                 Con_Printf("Wrong program name %s !\n", Cmd_Argv(1));
 990                 return;
 991         }
 992
 993         ed = PRVM_EDICT_NUM(atoi(Cmd_Argv(2)));
 994
 995         if((key = PRVM_ED_FindField(Cmd_Argv(3))) == 0)
 996                 Con_Printf("Key %s not found !\n", Cmd_Argv(3));
 997         else
 998                 PRVM_ED_ParseEpair(ed, key, Cmd_Argv(4));
 999
1000         PRVM_End;
1001 }
1002
1003 /*
1004 ====================
1005 PRVM_ED_ParseEdict
1006
1007 Parses an edict out of the given string, returning the new position
1008 ed should be a properly initialized empty edict.
1009 Used for initial level load and for savegames.
1010 ====================
1011 */
1012 const char *PRVM_ED_ParseEdict (const char *data, prvm_edict_t *ent)
1013 {
1014         ddef_t *key;
1015         qboolean anglehack;
1016         qboolean init;
1017         char keyname[256];
1018         size_t n;
1019
1020         init = false;
1021
1022 // go through all the dictionary pairs
1023         while (1)
1024         {
1025         // parse key
1026                 if (!COM_ParseToken(&data, false))
1027                         PRVM_ERROR ("PRVM_ED_ParseEntity: EOF without closing brace");
1028                 if (com_token[0] == '}')
1029                         break;
1030
1031                 // anglehack is to allow QuakeEd to write single scalar angles
1032                 // and allow them to be turned into vectors. (FIXME...)
1033                 if (!strcmp(com_token, "angle"))
1034                 {
1035                         strcpy (com_token, "angles");
1036                         anglehack = true;
1037                 }
1038                 else
1039                         anglehack = false;
1040
1041                 // FIXME: change light to _light to get rid of this hack
1042                 if (!strcmp(com_token, "light"))
1043                         strcpy (com_token, "light_lev");        // hack for single light def
1044
1045                 strcpy (keyname, com_token);
1046
1047                 // another hack to fix keynames with trailing spaces
1048                 n = strlen(keyname);
1049                 while (n && keyname[n-1] == ' ')
1050                 {
1051                         keyname[n-1] = 0;
1052                         n--;
1053                 }
1054
1055         // parse value
1056                 if (!COM_ParseToken(&data, false))
1057                         PRVM_ERROR ("PRVM_ED_ParseEntity: EOF without closing brace");
1058
1059                 if (com_token[0] == '}')
1060                         PRVM_ERROR ("PRVM_ED_ParseEntity: closing brace without data");
1061
1062                 init = true;
1063
1064                 // ignore attempts to set key "" (this problem occurs in nehahra neh1m8.bsp)
1065                 if (!keyname[0])
1066                         continue;
1067
1068 // keynames with a leading underscore are used for utility comments,
1069 // and are immediately discarded by quake
1070                 if (keyname[0] == '_')
1071                         continue;
1072
1073                 key = PRVM_ED_FindField (keyname);
1074                 if (!key)
1075                 {
1076                         Con_DPrintf("%s: '%s' is not a field\n", PRVM_NAME, keyname);
1077                         continue;
1078                 }
1079
1080                 if (anglehack)
1081                 {
1082                         char    temp[32];
1083                         strcpy (temp, com_token);
1084                         sprintf (com_token, "0 %s 0", temp);
1085                 }
1086
1087                 if (!PRVM_ED_ParseEpair(ent, key, com_token))
1088                         PRVM_ERROR ("PRVM_ED_ParseEdict: parse error");
1089         }
1090
1091         if (!init)
1092                 ent->priv.required->free = true;
1093
1094         return data;
1095 }
1096
1097
1098 /*
1099 ================
1100 PRVM_ED_LoadFromFile
1101
1102 The entities are directly placed in the array, rather than allocated with
1103 PRVM_ED_Alloc, because otherwise an error loading the map would have entity
1104 number references out of order.
1105
1106 Creates a server's entity / program execution context by
1107 parsing textual entity definitions out of an ent file.
1108
1109 Used for both fresh maps and savegame loads.  A fresh map would also need
1110 to call PRVM_ED_CallSpawnFunctions () to let the objects initialize themselves.
1111 ================
1112 */
1113 void PRVM_ED_LoadFromFile (const char *data)
1114 {
1115         prvm_edict_t *ent;
1116         int parsed, inhibited, spawned, died;
1117         mfunction_t *func;
1118
1119         parsed = 0;
1120         inhibited = 0;
1121         spawned = 0;
1122         died = 0;
1123
1124
1125 // parse ents
1126         while (1)
1127         {
1128 // parse the opening brace
1129                 if (!COM_ParseToken(&data, false))
1130                         break;
1131                 if (com_token[0] != '{')
1132                         PRVM_ERROR ("PRVM_ED_LoadFromFile: %s: found %s when expecting {", PRVM_NAME, com_token);
1133
1134                 // CHANGED: this is not conform to PR_LoadFromFile
1135                 if(prog->loadintoworld)
1136                 {
1137                         prog->loadintoworld = false;
1138                         ent = PRVM_EDICT_NUM(0);
1139                 }
1140                 else
1141                         ent = PRVM_ED_Alloc();
1142
1143                 // clear it
1144                 if (ent != prog->edicts)        // hack
1145                         memset (ent->fields.vp, 0, prog->progs->entityfields * 4);
1146
1147                 data = PRVM_ED_ParseEdict (data, ent);
1148                 parsed++;
1149
1150                 // remove the entity ?
1151                 if(prog->load_edict && !prog->load_edict(ent))
1152                 {
1153                         PRVM_ED_Free(ent);
1154                         inhibited++;
1155                         continue;
1156                 }
1157
1158 //
1159 // immediately call spawn function, but only if there is a self global and a classname
1160 //
1161                 if(prog->self && prog->flag & PRVM_FE_CLASSNAME)
1162                 {
1163                         string_t handle =  *(string_t*)&((qbyte*)ent->fields.vp)[PRVM_ED_FindFieldOffset("classname")];
1164                         if (!handle)
1165                         {
1166                                 Con_Print("No classname for:\n");
1167                                 PRVM_ED_Print(ent);
1168                                 PRVM_ED_Free (ent);
1169                                 continue;
1170                         }
1171
1172                         // look for the spawn function
1173                         func = PRVM_ED_FindFunction (PRVM_GetString(handle));
1174
1175                         if (!func)
1176                         {
1177                                 if (developer.integer) // don't confuse non-developers with errors
1178                                 {
1179                                         Con_Print("No spawn function for:\n");
1180                                         PRVM_ED_Print(ent);
1181                                 }
1182                                 PRVM_ED_Free (ent);
1183                                 continue;
1184                         }
1185
1186                         // self = ent
1187                         PRVM_G_INT(prog->self->ofs) = PRVM_EDICT_TO_PROG(ent);
1188                         PRVM_ExecuteProgram (func - prog->functions, "");
1189                 }
1190
1191                 spawned++;
1192                 if (ent->priv.required->free)
1193                         died++;
1194         }
1195
1196         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);
1197 }
1198
1199 // not used
1200 /*
1201 typedef struct dpfield_s
1202 {
1203         int type;
1204         char *string;
1205 }
1206 dpfield_t;
1207
1208 #define DPFIELDS (sizeof(dpfields) / sizeof(dpfield_t))
1209
1210 dpfield_t dpfields[] =
1211 {
1212 };
1213 */
1214
1215 /*
1216 ===============
1217 PRVM_ResetProg
1218 ===============
1219 */
1220
1221 void PRVM_ResetProg()
1222 {
1223         PRVM_GCALL(reset_cmd)();
1224         Mem_FreePool(&prog->progs_mempool);
1225         memset(prog,0,sizeof(prvm_prog_t));
1226 }
1227
1228 /*
1229 ===============
1230 PRVM_LoadLNO
1231 ===============
1232 */
1233 void PRVM_LoadLNO( const char *progname ) {
1234         qbyte *lno;
1235         unsigned int *header;
1236         char filename[512];
1237
1238         FS_StripExtension( progname, filename, sizeof( filename ) );
1239         strlcat( filename, ".lno", sizeof( filename ) );
1240
1241         lno = FS_LoadFile( filename, tempmempool, false );
1242         if( !lno ) {
1243                 return;
1244         }
1245
1246 /*
1247 <Spike>    SafeWrite (h, &lnotype, sizeof(int));
1248 <Spike>    SafeWrite (h, &version, sizeof(int));
1249 <Spike>    SafeWrite (h, &numglobaldefs, sizeof(int));
1250 <Spike>    SafeWrite (h, &numpr_globals, sizeof(int));
1251 <Spike>    SafeWrite (h, &numfielddefs, sizeof(int));
1252 <Spike>    SafeWrite (h, &numstatements, sizeof(int));
1253 <Spike>    SafeWrite (h, statement_linenums, numstatements*sizeof(int));
1254 */
1255         if( (unsigned) fs_filesize < (6 + prog->progs->numstatements) * sizeof( int ) ) {
1256         return;
1257         }
1258
1259         header = (unsigned int *) lno;
1260         if( header[ 0 ] == *(unsigned int *) "LNOF" &&
1261                 LittleLong( header[ 1 ] ) == 1 &&
1262                 (unsigned int)LittleLong( header[ 2 ] ) == (unsigned int)prog->progs->numglobaldefs &&
1263                 (unsigned int)LittleLong( header[ 3 ] ) == (unsigned int)prog->progs->numglobals &&
1264                 (unsigned int)LittleLong( header[ 4 ] ) == (unsigned int)prog->progs->numfielddefs &&
1265                 (unsigned int)LittleLong( header[ 5 ] ) == (unsigned int)prog->progs->numstatements )
1266         {
1267                 prog->statement_linenums = (int *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof( int ) );
1268                 memcpy( prog->statement_linenums, (int *) lno + 6, prog->progs->numstatements * sizeof( int ) );
1269         }
1270         Mem_Free( lno );
1271 }
1272
1273 /*
1274 ===============
1275 PRVM_LoadProgs
1276 ===============
1277 */
1278 void PRVM_LoadProgs (const char * filename, int numrequiredfunc, char **required_func, int numrequiredfields, prvm_required_field_t *required_field)
1279 {
1280         int i;
1281         dstatement_t *st;
1282         ddef_t *infielddefs;
1283         dfunction_t *dfunctions;
1284
1285         if( prog->loaded ) {
1286                 PRVM_ERROR ("PRVM_LoadProgs: there is already a %s program loaded!\n", PRVM_NAME );
1287         }
1288
1289         prog->progs = (dprograms_t *)FS_LoadFile (filename, prog->progs_mempool, false);
1290         if (prog->progs == NULL || fs_filesize < (fs_offset_t)sizeof(dprograms_t))
1291                 PRVM_ERROR ("PRVM_LoadProgs: couldn't load %s for %s", filename, PRVM_NAME);
1292
1293         Con_DPrintf("%s programs occupy %iK.\n", PRVM_NAME, fs_filesize/1024);
1294
1295         prog->filecrc = CRC_Block((qbyte *)prog->progs, fs_filesize);
1296
1297 // byte swap the header
1298         for (i = 0;i < (int) sizeof(*prog->progs) / 4;i++)
1299                 ((int *)prog->progs)[i] = LittleLong ( ((int *)prog->progs)[i] );
1300
1301         if (prog->progs->version != PROG_VERSION)
1302                 PRVM_ERROR ("%s: %s has wrong version number (%i should be %i)", PRVM_NAME, filename, prog->progs->version, PROG_VERSION);
1303         if (prog->progs->crc != prog->headercrc)
1304                 PRVM_ERROR ("%s: %s system vars have been modified, progdefs.h is out of date", PRVM_NAME, filename);
1305
1306         //prog->functions = (dfunction_t *)((qbyte *)progs + progs->ofs_functions);
1307         dfunctions = (dfunction_t *)((qbyte *)prog->progs + prog->progs->ofs_functions);
1308
1309         prog->strings = (char *)prog->progs + prog->progs->ofs_strings;
1310         prog->stringssize = 0;
1311         for (i = 0;i < prog->progs->numstrings;i++)
1312         {
1313                 if (prog->progs->ofs_strings + prog->stringssize >= (int)fs_filesize)
1314                         PRVM_ERROR ("%s: %s strings go past end of file\n", PRVM_NAME, filename);
1315                 prog->stringssize += (int)strlen (prog->strings + prog->stringssize) + 1;
1316         }
1317         prog->numknownstrings = 0;
1318         prog->maxknownstrings = 0;
1319         prog->knownstrings = NULL;
1320         prog->knownstrings_freeable = NULL;
1321
1322         prog->globaldefs = (ddef_t *)((qbyte *)prog->progs + prog->progs->ofs_globaldefs);
1323
1324         // we need to expand the fielddefs list to include all the engine fields,
1325         // so allocate a new place for it
1326         infielddefs = (ddef_t *)((qbyte *)prog->progs + prog->progs->ofs_fielddefs);
1327         //                                                                                              ( + DPFIELDS                       )
1328         prog->fielddefs = (ddef_t *)Mem_Alloc(prog->progs_mempool, (prog->progs->numfielddefs + numrequiredfields) * sizeof(ddef_t));
1329
1330         prog->statements = (dstatement_t *)((qbyte *)prog->progs + prog->progs->ofs_statements);
1331
1332         // moved edict_size calculation down below field adding code
1333
1334         //pr_global_struct = (globalvars_t *)((qbyte *)progs + progs->ofs_globals);
1335         prog->globals.generic = (float *)((qbyte *)prog->progs + prog->progs->ofs_globals);
1336
1337 // byte swap the lumps
1338         for (i=0 ; i<prog->progs->numstatements ; i++)
1339         {
1340                 prog->statements[i].op = LittleShort(prog->statements[i].op);
1341                 prog->statements[i].a = LittleShort(prog->statements[i].a);
1342                 prog->statements[i].b = LittleShort(prog->statements[i].b);
1343                 prog->statements[i].c = LittleShort(prog->statements[i].c);
1344         }
1345
1346         prog->functions = (mfunction_t *)Mem_Alloc(prog->progs_mempool, sizeof(mfunction_t) * prog->progs->numfunctions);
1347         for (i = 0;i < prog->progs->numfunctions;i++)
1348         {
1349                 prog->functions[i].first_statement = LittleLong (dfunctions[i].first_statement);
1350                 prog->functions[i].parm_start = LittleLong (dfunctions[i].parm_start);
1351                 prog->functions[i].s_name = LittleLong (dfunctions[i].s_name);
1352                 prog->functions[i].s_file = LittleLong (dfunctions[i].s_file);
1353                 prog->functions[i].numparms = LittleLong (dfunctions[i].numparms);
1354                 prog->functions[i].locals = LittleLong (dfunctions[i].locals);
1355                 memcpy(prog->functions[i].parm_size, dfunctions[i].parm_size, sizeof(dfunctions[i].parm_size));
1356         }
1357
1358         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
1359         {
1360                 prog->globaldefs[i].type = LittleShort (prog->globaldefs[i].type);
1361                 prog->globaldefs[i].ofs = LittleShort (prog->globaldefs[i].ofs);
1362                 prog->globaldefs[i].s_name = LittleLong (prog->globaldefs[i].s_name);
1363         }
1364
1365         // copy the progs fields to the new fields list
1366         for (i = 0;i < prog->progs->numfielddefs;i++)
1367         {
1368                 prog->fielddefs[i].type = LittleShort (infielddefs[i].type);
1369                 if (prog->fielddefs[i].type & DEF_SAVEGLOBAL)
1370                         PRVM_ERROR ("PRVM_LoadProgs: prog->fielddefs[i].type & DEF_SAVEGLOBAL in %s", PRVM_NAME);
1371                 prog->fielddefs[i].ofs = LittleShort (infielddefs[i].ofs);
1372                 prog->fielddefs[i].s_name = LittleLong (infielddefs[i].s_name);
1373         }
1374
1375         // append the required fields
1376         for (i = 0;i < (int) numrequiredfields;i++)
1377         {
1378                 prog->fielddefs[prog->progs->numfielddefs].type = required_field[i].type;
1379                 prog->fielddefs[prog->progs->numfielddefs].ofs = prog->progs->entityfields;
1380                 prog->fielddefs[prog->progs->numfielddefs].s_name = PRVM_SetEngineString(required_field[i].name);
1381                 if (prog->fielddefs[prog->progs->numfielddefs].type == ev_vector)
1382                         prog->progs->entityfields += 3;
1383                 else
1384                         prog->progs->entityfields++;
1385                 prog->progs->numfielddefs++;
1386         }
1387
1388         // check required functions
1389         for(i=0 ; i < numrequiredfunc ; i++)
1390                 if(PRVM_ED_FindFunction(required_func[i]) == 0)
1391                         PRVM_ERROR("%s: %s not found in %s\n",PRVM_NAME, required_func[i], filename);
1392
1393         for (i=0 ; i<prog->progs->numglobals ; i++)
1394                 ((int *)prog->globals.generic)[i] = LittleLong (((int *)prog->globals.generic)[i]);
1395
1396         // moved edict_size calculation down here, below field adding code
1397         // LordHavoc: this no longer includes the prvm_edict_t header
1398         prog->edict_size = prog->progs->entityfields * 4;
1399         prog->edictareasize = prog->edict_size * prog->limit_edicts;
1400
1401         // LordHavoc: bounds check anything static
1402         for (i = 0,st = prog->statements;i < prog->progs->numstatements;i++,st++)
1403         {
1404                 switch (st->op)
1405                 {
1406                 case OP_IF:
1407                 case OP_IFNOT:
1408                         if ((unsigned short) st->a >= prog->progs->numglobals || st->b + i < 0 || st->b + i >= prog->progs->numstatements)
1409                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds IF/IFNOT (statement %d) in %s\n", i, PRVM_NAME);
1410                         break;
1411                 case OP_GOTO:
1412                         if (st->a + i < 0 || st->a + i >= prog->progs->numstatements)
1413                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds GOTO (statement %d) in %s\n", i, PRVM_NAME);
1414                         break;
1415                 // global global global
1416                 case OP_ADD_F:
1417                 case OP_ADD_V:
1418                 case OP_SUB_F:
1419                 case OP_SUB_V:
1420                 case OP_MUL_F:
1421                 case OP_MUL_V:
1422                 case OP_MUL_FV:
1423                 case OP_MUL_VF:
1424                 case OP_DIV_F:
1425                 case OP_BITAND:
1426                 case OP_BITOR:
1427                 case OP_GE:
1428                 case OP_LE:
1429                 case OP_GT:
1430                 case OP_LT:
1431                 case OP_AND:
1432                 case OP_OR:
1433                 case OP_EQ_F:
1434                 case OP_EQ_V:
1435                 case OP_EQ_S:
1436                 case OP_EQ_E:
1437                 case OP_EQ_FNC:
1438                 case OP_NE_F:
1439                 case OP_NE_V:
1440                 case OP_NE_S:
1441                 case OP_NE_E:
1442                 case OP_NE_FNC:
1443                 case OP_ADDRESS:
1444                 case OP_LOAD_F:
1445                 case OP_LOAD_FLD:
1446                 case OP_LOAD_ENT:
1447                 case OP_LOAD_S:
1448                 case OP_LOAD_FNC:
1449                 case OP_LOAD_V:
1450                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1451                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d)\n", i);
1452                         break;
1453                 // global none global
1454                 case OP_NOT_F:
1455                 case OP_NOT_V:
1456                 case OP_NOT_S:
1457                 case OP_NOT_FNC:
1458                 case OP_NOT_ENT:
1459                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1460                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s\n", i, PRVM_NAME);
1461                         break;
1462                 // 2 globals
1463                 case OP_STOREP_F:
1464                 case OP_STOREP_ENT:
1465                 case OP_STOREP_FLD:
1466                 case OP_STOREP_S:
1467                 case OP_STOREP_FNC:
1468                 case OP_STORE_F:
1469                 case OP_STORE_ENT:
1470                 case OP_STORE_FLD:
1471                 case OP_STORE_S:
1472                 case OP_STORE_FNC:
1473                 case OP_STATE:
1474                 case OP_STOREP_V:
1475                 case OP_STORE_V:
1476                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals)
1477                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d)\n in %s", i, PRVM_NAME);
1478                         break;
1479                 // 1 global
1480                 case OP_CALL0:
1481                 case OP_CALL1:
1482                 case OP_CALL2:
1483                 case OP_CALL3:
1484                 case OP_CALL4:
1485                 case OP_CALL5:
1486                 case OP_CALL6:
1487                 case OP_CALL7:
1488                 case OP_CALL8:
1489                 case OP_DONE:
1490                 case OP_RETURN:
1491                         if ((unsigned short) st->a >= prog->progs->numglobals)
1492                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s\n", i, PRVM_NAME);
1493                         break;
1494                 default:
1495                         PRVM_ERROR("PRVM_LoadProgs: unknown opcode %d at statement %d in %s\n", st->op, i, PRVM_NAME);
1496                         break;
1497                 }
1498         }
1499
1500         PRVM_LoadLNO(filename);
1501
1502         PRVM_Init_Exec();
1503
1504         prog->loaded = TRUE;
1505
1506         // set flags & ddef_ts in prog
1507
1508         prog->flag = 0;
1509
1510         prog->self = PRVM_ED_FindGlobal("self");
1511
1512         if( PRVM_ED_FindGlobal("time") && PRVM_ED_FindGlobal("time")->type & ev_float )
1513                 prog->time = &PRVM_G_FLOAT(PRVM_ED_FindGlobal("time")->ofs);
1514
1515         if(PRVM_ED_FindField ("chain"))
1516                 prog->flag |= PRVM_FE_CHAIN;
1517
1518         if(PRVM_ED_FindField ("classname"))
1519                 prog->flag |= PRVM_FE_CLASSNAME;
1520
1521         if(PRVM_ED_FindField ("nextthink") && PRVM_ED_FindField ("frame") && PRVM_ED_FindField ("think")
1522                 && prog->flag && prog->self)
1523                 prog->flag |= PRVM_OP_STATE;
1524
1525         PRVM_GCALL(init_cmd)();
1526
1527         // init mempools
1528         PRVM_MEM_Alloc();
1529 }
1530
1531
1532 void PRVM_Fields_f (void)
1533 {
1534         int i, j, ednum, used, usedamount;
1535         int *counts;
1536         char tempstring[5000], tempstring2[260];
1537         const char *name;
1538         prvm_edict_t *ed;
1539         ddef_t *d;
1540         int *v;
1541
1542         // TODO
1543         /*
1544         if (!sv.active)
1545         {
1546                 Con_Print("no progs loaded\n");
1547                 return;
1548         }
1549         */
1550
1551         if(Cmd_Argc() != 2)
1552         {
1553                 Con_Print("prvm_fields <program name>\n");
1554                 return;
1555         }
1556
1557         PRVM_Begin;
1558         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1559                 return;
1560
1561         counts = (int *)Mem_Alloc(tempmempool, prog->progs->numfielddefs * sizeof(int));
1562         for (ednum = 0;ednum < prog->max_edicts;ednum++)
1563         {
1564                 ed = PRVM_EDICT_NUM(ednum);
1565                 if (ed->priv.required->free)
1566                         continue;
1567                 for (i = 1;i < prog->progs->numfielddefs;i++)
1568                 {
1569                         d = &prog->fielddefs[i];
1570                         name = PRVM_GetString(d->s_name);
1571                         if (name[strlen(name)-2] == '_')
1572                                 continue;       // skip _x, _y, _z vars
1573                         v = (int *)((char *)ed->fields.vp + d->ofs*4);
1574                         // if the value is still all 0, skip the field
1575                         for (j = 0;j < prvm_type_size[d->type & ~DEF_SAVEGLOBAL];j++)
1576                         {
1577                                 if (v[j])
1578                                 {
1579                                         counts[i]++;
1580                                         break;
1581                                 }
1582                         }
1583                 }
1584         }
1585         used = 0;
1586         usedamount = 0;
1587         tempstring[0] = 0;
1588         for (i = 0;i < prog->progs->numfielddefs;i++)
1589         {
1590                 d = &prog->fielddefs[i];
1591                 name = PRVM_GetString(d->s_name);
1592                 if (name[strlen(name)-2] == '_')
1593                         continue;       // skip _x, _y, _z vars
1594                 switch(d->type & ~DEF_SAVEGLOBAL)
1595                 {
1596                 case ev_string:
1597                         strcat(tempstring, "string   ");
1598                         break;
1599                 case ev_entity:
1600                         strcat(tempstring, "entity   ");
1601                         break;
1602                 case ev_function:
1603                         strcat(tempstring, "function ");
1604                         break;
1605                 case ev_field:
1606                         strcat(tempstring, "field    ");
1607                         break;
1608                 case ev_void:
1609                         strcat(tempstring, "void     ");
1610                         break;
1611                 case ev_float:
1612                         strcat(tempstring, "float    ");
1613                         break;
1614                 case ev_vector:
1615                         strcat(tempstring, "vector   ");
1616                         break;
1617                 case ev_pointer:
1618                         strcat(tempstring, "pointer  ");
1619                         break;
1620                 default:
1621                         sprintf (tempstring2, "bad type %i ", d->type & ~DEF_SAVEGLOBAL);
1622                         strcat(tempstring, tempstring2);
1623                         break;
1624                 }
1625                 if (strlen(name) > 256)
1626                 {
1627                         memcpy (tempstring2, name, 256);
1628                         tempstring2[256] = tempstring2[257] = tempstring2[258] = '.';
1629                         tempstring2[259] = 0;
1630                         name = tempstring2;
1631                 }
1632                 strcat(tempstring, name);
1633                 for (j = (int)strlen(name);j < 25;j++)
1634                         strcat(tempstring, " ");
1635                 sprintf(tempstring2, "%5d", counts[i]);
1636                 strcat(tempstring, tempstring2);
1637                 strcat(tempstring, "\n");
1638                 if (strlen(tempstring) >= 4096)
1639                 {
1640                         Con_Print(tempstring);
1641                         tempstring[0] = 0;
1642                 }
1643                 if (counts[i])
1644                 {
1645                         used++;
1646                         usedamount += prvm_type_size[d->type & ~DEF_SAVEGLOBAL];
1647                 }
1648         }
1649         Mem_Free(counts);
1650         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);
1651
1652         PRVM_End;
1653 }
1654
1655 void PRVM_Globals_f (void)
1656 {
1657         int i;
1658         // TODO
1659         /*if (!sv.active)
1660         {
1661                 Con_Print("no progs loaded\n");
1662                 return;
1663         }*/
1664         if(Cmd_Argc () != 2)
1665         {
1666                 Con_Print("prvm_globals <program name>\n");
1667                 return;
1668         }
1669
1670         PRVM_Begin;
1671         if(!PRVM_SetProgFromString (Cmd_Argv (1)))
1672                 return;
1673
1674         Con_Printf("%s :", PRVM_NAME);
1675
1676         for (i = 0;i < prog->progs->numglobaldefs;i++)
1677                 Con_Printf("%s\n", PRVM_GetString(prog->globaldefs[i].s_name));
1678         Con_Printf("%i global variables, totalling %i bytes\n", prog->progs->numglobals, prog->progs->numglobals * 4);
1679
1680         PRVM_End;
1681 }
1682
1683 /*
1684 ===============
1685 PRVM_Global
1686 ===============
1687 */
1688 void PRVM_Global_f(void)
1689 {
1690         ddef_t *global;
1691         if( Cmd_Argc() != 3 ) {
1692                 Con_Printf( "prvm_global <program name> <global name>\n" );
1693                 return;
1694         }
1695
1696         PRVM_Begin;
1697         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1698                 return;
1699
1700         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
1701         if( !global )
1702                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
1703         else
1704                 Con_Printf( "%s: %s\n", Cmd_Argv(2), PRVM_ValueString( (etype_t)global->type, (prvm_eval_t *) &prog->globals.generic[ global->ofs ] ) );
1705         PRVM_End;
1706 }
1707
1708 /*
1709 ===============
1710 PRVM_GlobalSet
1711 ===============
1712 */
1713 void PRVM_GlobalSet_f(void)
1714 {
1715         ddef_t *global;
1716         if( Cmd_Argc() != 4 ) {
1717                 Con_Printf( "prvm_globalset <program name> <global name> <value>\n" );
1718                 return;
1719         }
1720
1721         PRVM_Begin;
1722         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1723                 return;
1724
1725         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
1726         if( !global )
1727                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
1728         else
1729                 PRVM_ED_ParseEpair( NULL, global, Cmd_Argv(3) );
1730         PRVM_End;
1731 }
1732
1733 /*
1734 ===============
1735 PRVM_Init
1736 ===============
1737 */
1738 void PRVM_Init (void)
1739 {
1740         Cmd_AddCommand ("prvm_edict", PRVM_ED_PrintEdict_f);
1741         Cmd_AddCommand ("prvm_edicts", PRVM_ED_PrintEdicts_f);
1742         Cmd_AddCommand ("prvm_edictcount", PRVM_ED_Count_f);
1743         Cmd_AddCommand ("prvm_profile", PRVM_Profile_f);
1744         Cmd_AddCommand ("prvm_fields", PRVM_Fields_f);
1745         Cmd_AddCommand ("prvm_globals", PRVM_Globals_f);
1746         Cmd_AddCommand ("prvm_global", PRVM_Global_f);
1747         Cmd_AddCommand ("prvm_globalset", PRVM_GlobalSet_f);
1748         Cmd_AddCommand ("prvm_edictset", PRVM_ED_EdictSet_f);
1749         // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
1750         Cvar_RegisterVariable (&prvm_boundscheck);
1751         Cvar_RegisterVariable (&prvm_traceqc);
1752
1753         //VM_Cmd_Init();
1754 }
1755
1756 /*
1757 ===============
1758 PRVM_InitProg
1759 ===============
1760 */
1761 void PRVM_InitProg(int prognr)
1762 {
1763         if(prognr < 0 || prognr >= PRVM_MAXPROGS)
1764                 Sys_Error("PRVM_InitProg: Invalid program number %i\n",prognr);
1765
1766         prog = &prog_list[prognr];
1767
1768         if(prog->loaded)
1769                 PRVM_ResetProg();
1770
1771         memset(prog, 0, sizeof(prvm_prog_t));
1772
1773         prog->time = &prog->_time;
1774         prog->error_cmd = Host_Error;
1775 }
1776
1777 int PRVM_GetProgNr()
1778 {
1779         return prog - prog_list;
1780 }
1781
1782 void *_PRVM_Alloc(size_t buffersize, const char *filename, int fileline)
1783 {
1784         return _Mem_Alloc(prog->progs_mempool, buffersize, filename, fileline);
1785 }
1786
1787 void _PRVM_Free(void *buffer, const char *filename, int fileline)
1788 {
1789         _Mem_Free(buffer, filename, fileline);
1790 }
1791
1792 void _PRVM_FreeAll(const char *filename, int fileline)
1793 {
1794         prog->progs = NULL;
1795         prog->fielddefs = NULL;
1796         prog->functions = NULL;
1797         _Mem_EmptyPool(prog->progs_mempool, filename, fileline);
1798 }
1799
1800 // LordHavoc: turned PRVM_EDICT_NUM into a #define for speed reasons
1801 prvm_edict_t *PRVM_EDICT_NUM_ERROR(int n, char *filename, int fileline)
1802 {
1803         PRVM_ERROR ("PRVM_EDICT_NUM: %s: bad number %i (called at %s:%i)", PRVM_NAME, n, filename, fileline);
1804         return NULL;
1805 }
1806
1807 /*
1808 int NUM_FOR_EDICT_ERROR(prvm_edict_t *e)
1809 {
1810         PRVM_ERROR ("PRVM_NUM_FOR_EDICT: bad pointer %p (world is %p, entity number would be %i)", e, prog->edicts, e - prog->edicts);
1811         return 0;
1812 }
1813
1814 int PRVM_NUM_FOR_EDICT(prvm_edict_t *e)
1815 {
1816         int n;
1817         n = e - prog->edicts;
1818         if ((unsigned int)n >= prog->limit_edicts)
1819                 Host_Error ("PRVM_NUM_FOR_EDICT: bad pointer");
1820         return n;
1821 }
1822
1823 //int NoCrash_NUM_FOR_EDICT(prvm_edict_t *e)
1824 //{
1825 //      return e - prog->edicts;
1826 //}
1827
1828 //#define       PRVM_EDICT_TO_PROG(e) ((qbyte *)(((prvm_edict_t *)e)->v) - (qbyte *)(prog->edictsfields))
1829 //#define PRVM_PROG_TO_EDICT(e) (prog->edicts + ((e) / (progs->entityfields * 4)))
1830 int PRVM_EDICT_TO_PROG(prvm_edict_t *e)
1831 {
1832         int n;
1833         n = e - prog->edicts;
1834         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
1835                 Host_Error("PRVM_EDICT_TO_PROG: invalid edict %8p (number %i compared to world at %8p)\n", e, n, prog->edicts);
1836         return n;// EXPERIMENTAL
1837         //return (qbyte *)e->v - (qbyte *)prog->edictsfields;
1838 }
1839 prvm_edict_t *PRVM_PROG_TO_EDICT(int n)
1840 {
1841         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
1842                 Host_Error("PRVM_PROG_TO_EDICT: invalid edict number %i\n", n);
1843         return prog->edicts + n; // EXPERIMENTAL
1844         //return prog->edicts + ((n) / (progs->entityfields * 4));
1845 }
1846 */
1847
1848
1849 const char *PRVM_GetString(int num)
1850 {
1851         if (num >= 0 && num < prog->stringssize)
1852                 return prog->strings + num;
1853         else if (num < 0 && num >= -prog->numknownstrings)
1854         {
1855                 num = -1 - num;
1856                 if (!prog->knownstrings[num])
1857                         PRVM_ERROR("PRVM_GetString: attempt to get string that is already freed\n");
1858                 return prog->knownstrings[num];
1859         }
1860         else
1861         {
1862                 PRVM_ERROR("PRVM_GetString: invalid string offset %i\n", num);
1863                 return "";
1864         }
1865 }
1866
1867 int PRVM_SetEngineString(const char *s)
1868 {
1869         int i;
1870         if (!s)
1871                 return 0;
1872         if (s >= prog->strings && s <= prog->strings + prog->stringssize)
1873                 PRVM_ERROR("PRVM_SetEngineString: s in prog->strings area\n");
1874         for (i = 0;i < prog->numknownstrings;i++)
1875                 if (prog->knownstrings[i] == s)
1876                         return -1 - i;
1877         // new unknown engine string
1878         if (developer.integer >= 3)
1879                 Con_Printf("new engine string %p\n", s);
1880         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
1881                 if (!prog->knownstrings[i])
1882                         break;
1883         if (i >= prog->numknownstrings)
1884         {
1885                 if (i >= prog->maxknownstrings)
1886                 {
1887                         const char **oldstrings = prog->knownstrings;
1888                         const qbyte *oldstrings_freeable = prog->knownstrings_freeable;
1889                         prog->maxknownstrings += 128;
1890                         prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
1891                         prog->knownstrings_freeable = (qbyte *)PRVM_Alloc(prog->maxknownstrings * sizeof(qbyte));
1892                         if (prog->numknownstrings)
1893                         {
1894                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
1895                                 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(qbyte));
1896                         }
1897                 }
1898                 prog->numknownstrings++;
1899         }
1900         prog->firstfreeknownstring = i + 1;
1901         prog->knownstrings[i] = s;
1902         return -1 - i;
1903 }
1904
1905 int PRVM_AllocString(size_t bufferlength, char **pointer)
1906 {
1907         int i;
1908         if (!bufferlength)
1909                 return 0;
1910         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
1911                 if (!prog->knownstrings[i])
1912                         break;
1913         if (i >= prog->numknownstrings)
1914         {
1915                 if (i >= prog->maxknownstrings)
1916                 {
1917                         const char **oldstrings = prog->knownstrings;
1918                         const qbyte *oldstrings_freeable = prog->knownstrings_freeable;
1919                         prog->maxknownstrings += 128;
1920                         prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
1921                         prog->knownstrings_freeable = (qbyte *)PRVM_Alloc(prog->maxknownstrings * sizeof(qbyte));
1922                         if (prog->numknownstrings)
1923                         {
1924                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
1925                                 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(qbyte));
1926                         }
1927                 }
1928                 prog->numknownstrings++;
1929         }
1930         prog->firstfreeknownstring = i + 1;
1931         prog->knownstrings[i] = (char *)PRVM_Alloc(bufferlength);
1932         prog->knownstrings_freeable[i] = true;
1933         if (pointer)
1934                 *pointer = (char *)(prog->knownstrings[i]);
1935         return -1 - i;
1936 }
1937
1938 void PRVM_FreeString(int num)
1939 {
1940         if (num == 0)
1941                 PRVM_ERROR("PRVM_FreeString: attempt to free a NULL string\n");
1942         else if (num >= 0 && num < prog->stringssize)
1943                 PRVM_ERROR("PRVM_FreeString: attempt to free a constant string\n");
1944         else if (num < 0 && num >= -prog->numknownstrings)
1945         {
1946                 num = -1 - num;
1947                 if (!prog->knownstrings[num])
1948                         PRVM_ERROR("PRVM_FreeString: attempt to free a non-existent or already freed string\n");
1949                 if (!prog->knownstrings[num])
1950                         PRVM_ERROR("PRVM_FreeString: attempt to free a string owned by the engine\n");
1951                 PRVM_Free((char *)prog->knownstrings[num]);
1952                 prog->knownstrings[num] = NULL;
1953                 prog->knownstrings_freeable[num] = false;
1954                 prog->firstfreeknownstring = min(prog->firstfreeknownstring, num);
1955         }
1956         else
1957                 PRVM_ERROR("PRVM_FreeString: invalid string offset %i\n", num);
1958 }
1959