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 = 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 &= ~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 &= ~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         int             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 (def->type, 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         int             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         int             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(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(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(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 = 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 < 0 || i >= prog->limit_edicts)
 931                         Con_Printf("PRVM_ED_ParseEpair: ev_entity reference too large (edict %i >= MAX_EDICTS %i) on %s\n", i, 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(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         int 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 // keynames with a leading underscore are used for utility comments,
1065 // and are immediately discarded by quake
1066                 if (keyname[0] == '_')
1067                         continue;
1068
1069                 key = PRVM_ED_FindField (keyname);
1070                 if (!key)
1071                 {
1072                         Con_DPrintf("%s: '%s' is not a field\n", PRVM_NAME, keyname);
1073                         continue;
1074                 }
1075
1076                 if (anglehack)
1077                 {
1078                         char    temp[32];
1079                         strcpy (temp, com_token);
1080                         sprintf (com_token, "0 %s 0", temp);
1081                 }
1082
1083                 if (!PRVM_ED_ParseEpair(ent, key, com_token))
1084                         PRVM_ERROR ("PRVM_ED_ParseEdict: parse error");
1085         }
1086
1087         if (!init)
1088                 ent->priv.required->free = true;
1089
1090         return data;
1091 }
1092
1093
1094 /*
1095 ================
1096 PRVM_ED_LoadFromFile
1097
1098 The entities are directly placed in the array, rather than allocated with
1099 PRVM_ED_Alloc, because otherwise an error loading the map would have entity
1100 number references out of order.
1101
1102 Creates a server's entity / program execution context by
1103 parsing textual entity definitions out of an ent file.
1104
1105 Used for both fresh maps and savegame loads.  A fresh map would also need
1106 to call PRVM_ED_CallSpawnFunctions () to let the objects initialize themselves.
1107 ================
1108 */
1109 void PRVM_ED_LoadFromFile (const char *data)
1110 {
1111         prvm_edict_t *ent;
1112         int parsed, inhibited, spawned, died;
1113         mfunction_t *func;
1114
1115         parsed = 0;
1116         inhibited = 0;
1117         spawned = 0;
1118         died = 0;
1119
1120
1121 // parse ents
1122         while (1)
1123         {
1124 // parse the opening brace
1125                 if (!COM_ParseToken(&data, false))
1126                         break;
1127                 if (com_token[0] != '{')
1128                         PRVM_ERROR ("PRVM_ED_LoadFromFile: %s: found %s when expecting {", PRVM_NAME, com_token);
1129
1130                 // CHANGED: this is not conform to PR_LoadFromFile
1131                 if(prog->loadintoworld)
1132                 {
1133                         prog->loadintoworld = false;
1134                         ent = PRVM_EDICT_NUM(0);
1135                 }
1136                 else
1137                         ent = PRVM_ED_Alloc();
1138
1139                 // clear it
1140                 if (ent != prog->edicts)        // hack
1141                         memset (ent->fields.vp, 0, prog->progs->entityfields * 4);
1142
1143                 data = PRVM_ED_ParseEdict (data, ent);
1144                 parsed++;
1145
1146                 // remove the entity ?
1147                 if(prog->load_edict && !prog->load_edict(ent))
1148                 {
1149                         PRVM_ED_Free(ent);
1150                         inhibited++;
1151                         continue;
1152                 }
1153
1154 //
1155 // immediately call spawn function, but only if there is a self global and a classname
1156 //
1157                 if(prog->self && prog->flag & PRVM_FE_CLASSNAME)
1158                 {
1159                         string_t handle =  *(string_t*)&((qbyte*)ent->fields.vp)[PRVM_ED_FindFieldOffset("classname")];
1160                         if (!handle)
1161                         {
1162                                 Con_Print("No classname for:\n");
1163                                 PRVM_ED_Print(ent);
1164                                 PRVM_ED_Free (ent);
1165                                 continue;
1166                         }
1167
1168                         // look for the spawn function
1169                         func = PRVM_ED_FindFunction (PRVM_GetString(handle));
1170
1171                         if (!func)
1172                         {
1173                                 if (developer.integer) // don't confuse non-developers with errors
1174                                 {
1175                                         Con_Print("No spawn function for:\n");
1176                                         PRVM_ED_Print(ent);
1177                                 }
1178                                 PRVM_ED_Free (ent);
1179                                 continue;
1180                         }
1181
1182                         // self = ent
1183                         PRVM_G_INT(prog->self->ofs) = PRVM_EDICT_TO_PROG(ent);
1184                         PRVM_ExecuteProgram (func - prog->functions, "");
1185                 }
1186
1187                 spawned++;
1188                 if (ent->priv.required->free)
1189                         died++;
1190         }
1191
1192         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);
1193 }
1194
1195 // not used
1196 /*
1197 typedef struct dpfield_s
1198 {
1199         int type;
1200         char *string;
1201 }
1202 dpfield_t;
1203
1204 #define DPFIELDS (sizeof(dpfields) / sizeof(dpfield_t))
1205
1206 dpfield_t dpfields[] =
1207 {
1208 };
1209 */
1210
1211 /*
1212 ===============
1213 PRVM_ResetProg
1214 ===============
1215 */
1216
1217 void PRVM_ResetProg()
1218 {
1219         PRVM_GCALL(reset_cmd)();
1220         Mem_FreePool(&prog->progs_mempool);
1221         memset(prog,0,sizeof(prvm_prog_t));
1222 }
1223
1224 /*
1225 ===============
1226 PRVM_LoadProgs
1227 ===============
1228 */
1229 void PRVM_LoadProgs (const char * filename, int numrequiredfunc, char **required_func, int numrequiredfields, prvm_required_field_t *required_field)
1230 {
1231         int i;
1232         dstatement_t *st;
1233         ddef_t *infielddefs;
1234         dfunction_t *dfunctions;
1235
1236         if( prog->loaded ) {
1237                 PRVM_ERROR ("PRVM_LoadProgs: there is already a %s program loaded!\n", PRVM_NAME );
1238         }
1239
1240         prog->progs = (dprograms_t *)FS_LoadFile (filename, prog->progs_mempool, false);
1241         if (prog->progs == NULL)
1242                 PRVM_ERROR ("PRVM_LoadProgs: couldn't load %s for %s", filename, PRVM_NAME);
1243
1244         Con_DPrintf("%s programs occupy %iK.\n", PRVM_NAME, fs_filesize/1024);
1245
1246         prog->filecrc = CRC_Block((qbyte *)prog->progs, fs_filesize);
1247
1248 // byte swap the header
1249         for (i = 0;i < (int) sizeof(*prog->progs) / 4;i++)
1250                 ((int *)prog->progs)[i] = LittleLong ( ((int *)prog->progs)[i] );
1251
1252         if (prog->progs->version != PROG_VERSION)
1253                 PRVM_ERROR ("%s: %s has wrong version number (%i should be %i)", PRVM_NAME, filename, prog->progs->version, PROG_VERSION);
1254         if (prog->progs->crc != prog->headercrc)
1255                 PRVM_ERROR ("%s: %s system vars have been modified, progdefs.h is out of date", PRVM_NAME, filename);
1256
1257         //prog->functions = (dfunction_t *)((qbyte *)progs + progs->ofs_functions);
1258         dfunctions = (dfunction_t *)((qbyte *)prog->progs + prog->progs->ofs_functions);
1259
1260         prog->strings = (char *)prog->progs + prog->progs->ofs_strings;
1261         prog->stringssize = 0;
1262         for (i = 0;i < prog->progs->numstrings;i++)
1263         {
1264                 if (prog->progs->ofs_strings + prog->stringssize >= fs_filesize)
1265                         PRVM_ERROR ("%s: %s strings go past end of file\n", PRVM_NAME, filename);
1266                 prog->stringssize += strlen (prog->strings + prog->stringssize) + 1;
1267         }
1268         prog->numknownstrings = 0;
1269         prog->maxknownstrings = 0;
1270         prog->knownstrings = NULL;
1271
1272         prog->globaldefs = (ddef_t *)((qbyte *)prog->progs + prog->progs->ofs_globaldefs);
1273
1274         // we need to expand the fielddefs list to include all the engine fields,
1275         // so allocate a new place for it
1276         infielddefs = (ddef_t *)((qbyte *)prog->progs + prog->progs->ofs_fielddefs);
1277         //                                                                                              ( + DPFIELDS                       )
1278         prog->fielddefs = Mem_Alloc(prog->progs_mempool, (prog->progs->numfielddefs + numrequiredfields) * sizeof(ddef_t));
1279
1280         prog->statements = (dstatement_t *)((qbyte *)prog->progs + prog->progs->ofs_statements);
1281
1282         // moved edict_size calculation down below field adding code
1283
1284         //pr_global_struct = (globalvars_t *)((qbyte *)progs + progs->ofs_globals);
1285         prog->globals.generic = (float *)((qbyte *)prog->progs + prog->progs->ofs_globals);
1286
1287 // byte swap the lumps
1288         for (i=0 ; i<prog->progs->numstatements ; i++)
1289         {
1290                 prog->statements[i].op = LittleShort(prog->statements[i].op);
1291                 prog->statements[i].a = LittleShort(prog->statements[i].a);
1292                 prog->statements[i].b = LittleShort(prog->statements[i].b);
1293                 prog->statements[i].c = LittleShort(prog->statements[i].c);
1294         }
1295
1296         prog->functions = Mem_Alloc(prog->progs_mempool, sizeof(mfunction_t) * prog->progs->numfunctions);
1297         for (i = 0;i < prog->progs->numfunctions;i++)
1298         {
1299                 prog->functions[i].first_statement = LittleLong (dfunctions[i].first_statement);
1300                 prog->functions[i].parm_start = LittleLong (dfunctions[i].parm_start);
1301                 prog->functions[i].s_name = LittleLong (dfunctions[i].s_name);
1302                 prog->functions[i].s_file = LittleLong (dfunctions[i].s_file);
1303                 prog->functions[i].numparms = LittleLong (dfunctions[i].numparms);
1304                 prog->functions[i].locals = LittleLong (dfunctions[i].locals);
1305                 memcpy(prog->functions[i].parm_size, dfunctions[i].parm_size, sizeof(dfunctions[i].parm_size));
1306         }
1307
1308         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
1309         {
1310                 prog->globaldefs[i].type = LittleShort (prog->globaldefs[i].type);
1311                 prog->globaldefs[i].ofs = LittleShort (prog->globaldefs[i].ofs);
1312                 prog->globaldefs[i].s_name = LittleLong (prog->globaldefs[i].s_name);
1313         }
1314
1315         // copy the progs fields to the new fields list
1316         for (i = 0;i < prog->progs->numfielddefs;i++)
1317         {
1318                 prog->fielddefs[i].type = LittleShort (infielddefs[i].type);
1319                 if (prog->fielddefs[i].type & DEF_SAVEGLOBAL)
1320                         PRVM_ERROR ("PRVM_LoadProgs: prog->fielddefs[i].type & DEF_SAVEGLOBAL in %s", PRVM_NAME);
1321                 prog->fielddefs[i].ofs = LittleShort (infielddefs[i].ofs);
1322                 prog->fielddefs[i].s_name = LittleLong (infielddefs[i].s_name);
1323         }
1324
1325         // append the required fields
1326         for (i = 0;i < (int) numrequiredfields;i++)
1327         {
1328                 prog->fielddefs[prog->progs->numfielddefs].type = required_field[i].type;
1329                 prog->fielddefs[prog->progs->numfielddefs].ofs = prog->progs->entityfields;
1330                 prog->fielddefs[prog->progs->numfielddefs].s_name = PRVM_SetEngineString(required_field[i].name);
1331                 if (prog->fielddefs[prog->progs->numfielddefs].type == ev_vector)
1332                         prog->progs->entityfields += 3;
1333                 else
1334                         prog->progs->entityfields++;
1335                 prog->progs->numfielddefs++;
1336         }
1337
1338         // check required functions
1339         for(i=0 ; i < numrequiredfunc ; i++)
1340                 if(PRVM_ED_FindFunction(required_func[i]) == 0)
1341                         PRVM_ERROR("%s: %s not found in %s\n",PRVM_NAME, required_func[i], filename);
1342
1343         for (i=0 ; i<prog->progs->numglobals ; i++)
1344                 ((int *)prog->globals.generic)[i] = LittleLong (((int *)prog->globals.generic)[i]);
1345
1346         // moved edict_size calculation down here, below field adding code
1347         // LordHavoc: this no longer includes the prvm_edict_t header
1348         prog->edict_size = prog->progs->entityfields * 4;
1349         prog->edictareasize = prog->edict_size * prog->limit_edicts;
1350
1351         // LordHavoc: bounds check anything static
1352         for (i = 0,st = prog->statements;i < prog->progs->numstatements;i++,st++)
1353         {
1354                 switch (st->op)
1355                 {
1356                 case OP_IF:
1357                 case OP_IFNOT:
1358                         if ((unsigned short) st->a >= prog->progs->numglobals || st->b + i < 0 || st->b + i >= prog->progs->numstatements)
1359                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds IF/IFNOT (statement %d) in %s\n", i, PRVM_NAME);
1360                         break;
1361                 case OP_GOTO:
1362                         if (st->a + i < 0 || st->a + i >= prog->progs->numstatements)
1363                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds GOTO (statement %d) in %s\n", i, PRVM_NAME);
1364                         break;
1365                 // global global global
1366                 case OP_ADD_F:
1367                 case OP_ADD_V:
1368                 case OP_SUB_F:
1369                 case OP_SUB_V:
1370                 case OP_MUL_F:
1371                 case OP_MUL_V:
1372                 case OP_MUL_FV:
1373                 case OP_MUL_VF:
1374                 case OP_DIV_F:
1375                 case OP_BITAND:
1376                 case OP_BITOR:
1377                 case OP_GE:
1378                 case OP_LE:
1379                 case OP_GT:
1380                 case OP_LT:
1381                 case OP_AND:
1382                 case OP_OR:
1383                 case OP_EQ_F:
1384                 case OP_EQ_V:
1385                 case OP_EQ_S:
1386                 case OP_EQ_E:
1387                 case OP_EQ_FNC:
1388                 case OP_NE_F:
1389                 case OP_NE_V:
1390                 case OP_NE_S:
1391                 case OP_NE_E:
1392                 case OP_NE_FNC:
1393                 case OP_ADDRESS:
1394                 case OP_LOAD_F:
1395                 case OP_LOAD_FLD:
1396                 case OP_LOAD_ENT:
1397                 case OP_LOAD_S:
1398                 case OP_LOAD_FNC:
1399                 case OP_LOAD_V:
1400                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1401                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d)\n", i);
1402                         break;
1403                 // global none global
1404                 case OP_NOT_F:
1405                 case OP_NOT_V:
1406                 case OP_NOT_S:
1407                 case OP_NOT_FNC:
1408                 case OP_NOT_ENT:
1409                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1410                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s\n", i, PRVM_NAME);
1411                         break;
1412                 // 2 globals
1413                 case OP_STOREP_F:
1414                 case OP_STOREP_ENT:
1415                 case OP_STOREP_FLD:
1416                 case OP_STOREP_S:
1417                 case OP_STOREP_FNC:
1418                 case OP_STORE_F:
1419                 case OP_STORE_ENT:
1420                 case OP_STORE_FLD:
1421                 case OP_STORE_S:
1422                 case OP_STORE_FNC:
1423                 case OP_STATE:
1424                 case OP_STOREP_V:
1425                 case OP_STORE_V:
1426                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals)
1427                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d)\n in %s", i, PRVM_NAME);
1428                         break;
1429                 // 1 global
1430                 case OP_CALL0:
1431                 case OP_CALL1:
1432                 case OP_CALL2:
1433                 case OP_CALL3:
1434                 case OP_CALL4:
1435                 case OP_CALL5:
1436                 case OP_CALL6:
1437                 case OP_CALL7:
1438                 case OP_CALL8:
1439                 case OP_DONE:
1440                 case OP_RETURN:
1441                         if ((unsigned short) st->a >= prog->progs->numglobals)
1442                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s\n", i, PRVM_NAME);
1443                         break;
1444                 default:
1445                         PRVM_ERROR("PRVM_LoadProgs: unknown opcode %d at statement %d in %s\n", st->op, i, PRVM_NAME);
1446                         break;
1447                 }
1448         }
1449
1450         PRVM_Init_Exec();
1451
1452         prog->loaded = TRUE;
1453
1454         // set flags & ddef_ts in prog
1455
1456         prog->flag = 0;
1457
1458         prog->self = PRVM_ED_FindGlobal("self");
1459
1460         if( PRVM_ED_FindGlobal("time") && PRVM_ED_FindGlobal("time")->type & ev_float )
1461                 prog->time = &PRVM_G_FLOAT(PRVM_ED_FindGlobal("time")->ofs);
1462
1463         if(PRVM_ED_FindField ("chain"))
1464                 prog->flag |= PRVM_FE_CHAIN;
1465
1466         if(PRVM_ED_FindField ("classname"))
1467                 prog->flag |= PRVM_FE_CLASSNAME;
1468
1469         if(PRVM_ED_FindField ("nextthink") && PRVM_ED_FindField ("frame") && PRVM_ED_FindField ("think")
1470                 && prog->flag && prog->self)
1471                 prog->flag |= PRVM_OP_STATE;
1472
1473         PRVM_GCALL(init_cmd)();
1474
1475         // init mempools
1476         PRVM_MEM_Alloc();
1477 }
1478
1479
1480 void PRVM_Fields_f (void)
1481 {
1482         int i, j, ednum, used, usedamount;
1483         int *counts;
1484         char tempstring[5000], tempstring2[260];
1485         const char *name;
1486         prvm_edict_t *ed;
1487         ddef_t *d;
1488         int *v;
1489
1490         // TODO
1491         /*
1492         if (!sv.active)
1493         {
1494                 Con_Print("no progs loaded\n");
1495                 return;
1496         }
1497         */
1498
1499         if(Cmd_Argc() != 2)
1500         {
1501                 Con_Print("prvm_fields <program name>\n");
1502                 return;
1503         }
1504
1505         PRVM_Begin;
1506         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1507                 return;
1508
1509         counts = Mem_Alloc(tempmempool, prog->progs->numfielddefs * sizeof(int));
1510         for (ednum = 0;ednum < prog->max_edicts;ednum++)
1511         {
1512                 ed = PRVM_EDICT_NUM(ednum);
1513                 if (ed->priv.required->free)
1514                         continue;
1515                 for (i = 1;i < prog->progs->numfielddefs;i++)
1516                 {
1517                         d = &prog->fielddefs[i];
1518                         name = PRVM_GetString(d->s_name);
1519                         if (name[strlen(name)-2] == '_')
1520                                 continue;       // skip _x, _y, _z vars
1521                         v = (int *)((char *)ed->fields.vp + d->ofs*4);
1522                         // if the value is still all 0, skip the field
1523                         for (j = 0;j < prvm_type_size[d->type & ~DEF_SAVEGLOBAL];j++)
1524                         {
1525                                 if (v[j])
1526                                 {
1527                                         counts[i]++;
1528                                         break;
1529                                 }
1530                         }
1531                 }
1532         }
1533         used = 0;
1534         usedamount = 0;
1535         tempstring[0] = 0;
1536         for (i = 0;i < prog->progs->numfielddefs;i++)
1537         {
1538                 d = &prog->fielddefs[i];
1539                 name = PRVM_GetString(d->s_name);
1540                 if (name[strlen(name)-2] == '_')
1541                         continue;       // skip _x, _y, _z vars
1542                 switch(d->type & ~DEF_SAVEGLOBAL)
1543                 {
1544                 case ev_string:
1545                         strcat(tempstring, "string   ");
1546                         break;
1547                 case ev_entity:
1548                         strcat(tempstring, "entity   ");
1549                         break;
1550                 case ev_function:
1551                         strcat(tempstring, "function ");
1552                         break;
1553                 case ev_field:
1554                         strcat(tempstring, "field    ");
1555                         break;
1556                 case ev_void:
1557                         strcat(tempstring, "void     ");
1558                         break;
1559                 case ev_float:
1560                         strcat(tempstring, "float    ");
1561                         break;
1562                 case ev_vector:
1563                         strcat(tempstring, "vector   ");
1564                         break;
1565                 case ev_pointer:
1566                         strcat(tempstring, "pointer  ");
1567                         break;
1568                 default:
1569                         sprintf (tempstring2, "bad type %i ", d->type & ~DEF_SAVEGLOBAL);
1570                         strcat(tempstring, tempstring2);
1571                         break;
1572                 }
1573                 if (strlen(name) > 256)
1574                 {
1575                         memcpy (tempstring2, name, 256);
1576                         tempstring2[256] = tempstring2[257] = tempstring2[258] = '.';
1577                         tempstring2[259] = 0;
1578                         name = tempstring2;
1579                 }
1580                 strcat(tempstring, name);
1581                 for (j = strlen(name);j < 25;j++)
1582                         strcat(tempstring, " ");
1583                 sprintf(tempstring2, "%5d", counts[i]);
1584                 strcat(tempstring, tempstring2);
1585                 strcat(tempstring, "\n");
1586                 if (strlen(tempstring) >= 4096)
1587                 {
1588                         Con_Print(tempstring);
1589                         tempstring[0] = 0;
1590                 }
1591                 if (counts[i])
1592                 {
1593                         used++;
1594                         usedamount += prvm_type_size[d->type & ~DEF_SAVEGLOBAL];
1595                 }
1596         }
1597         Mem_Free(counts);
1598         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);
1599
1600         PRVM_End;
1601 }
1602
1603 void PRVM_Globals_f (void)
1604 {
1605         int i;
1606         // TODO
1607         /*if (!sv.active)
1608         {
1609                 Con_Print("no progs loaded\n");
1610                 return;
1611         }*/
1612         if(Cmd_Argc () != 2)
1613         {
1614                 Con_Print("prvm_globals <program name>\n");
1615                 return;
1616         }
1617
1618         PRVM_Begin;
1619         if(!PRVM_SetProgFromString (Cmd_Argv (1)))
1620                 return;
1621
1622         Con_Printf("%s :", PRVM_NAME);
1623
1624         for (i = 0;i < prog->progs->numglobaldefs;i++)
1625                 Con_Printf("%s\n", PRVM_GetString(prog->globaldefs[i].s_name));
1626         Con_Printf("%i global variables, totalling %i bytes\n", prog->progs->numglobals, prog->progs->numglobals * 4);
1627
1628         PRVM_End;
1629 }
1630
1631 /*
1632 ===============
1633 PRVM_Global
1634 ===============
1635 */
1636 void PRVM_Global_f(void)
1637 {
1638         ddef_t *global;
1639         if( Cmd_Argc() != 3 ) {
1640                 Con_Printf( "prvm_global <program name> <global name>\n" );
1641                 return;
1642         }
1643
1644         PRVM_Begin;
1645         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1646                 return;
1647
1648         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
1649         if( !global )
1650                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
1651         else
1652                 Con_Printf( "%s: %s\n", Cmd_Argv(2), PRVM_ValueString( global->type, (prvm_eval_t *) &prog->globals.generic[ global->ofs ] ) );
1653         PRVM_End;
1654 }
1655
1656 /*
1657 ===============
1658 PRVM_GlobalSet
1659 ===============
1660 */
1661 void PRVM_GlobalSet_f(void)
1662 {
1663         ddef_t *global;
1664         if( Cmd_Argc() != 4 ) {
1665                 Con_Printf( "prvm_globalset <program name> <global name> <value>\n" );
1666                 return;
1667         }
1668
1669         PRVM_Begin;
1670         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1671                 return;
1672
1673         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
1674         if( !global )
1675                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
1676         else
1677                 PRVM_ED_ParseEpair( NULL, global, Cmd_Argv(3) );
1678         PRVM_End;
1679 }
1680
1681 /*
1682 ===============
1683 PRVM_Init
1684 ===============
1685 */
1686 void PRVM_Init (void)
1687 {
1688         Cmd_AddCommand ("prvm_edict", PRVM_ED_PrintEdict_f);
1689         Cmd_AddCommand ("prvm_edicts", PRVM_ED_PrintEdicts_f);
1690         Cmd_AddCommand ("prvm_edictcount", PRVM_ED_Count_f);
1691         Cmd_AddCommand ("prvm_profile", PRVM_Profile_f);
1692         Cmd_AddCommand ("prvm_fields", PRVM_Fields_f);
1693         Cmd_AddCommand ("prvm_globals", PRVM_Globals_f);
1694         Cmd_AddCommand ("prvm_global", PRVM_Global_f);
1695         Cmd_AddCommand ("prvm_globalset", PRVM_GlobalSet_f);
1696         Cmd_AddCommand ("prvm_edictset", PRVM_ED_EdictSet_f);
1697         // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
1698         Cvar_RegisterVariable (&prvm_boundscheck);
1699         Cvar_RegisterVariable (&prvm_traceqc);
1700
1701         //VM_Cmd_Init();
1702 }
1703
1704 /*
1705 ===============
1706 PRVM_InitProg
1707 ===============
1708 */
1709 void PRVM_InitProg(int prognr)
1710 {
1711         if(prognr < 0 || prognr >= PRVM_MAXPROGS)
1712                 Sys_Error("PRVM_InitProg: Invalid program number %i\n",prognr);
1713
1714         prog = &prog_list[prognr];
1715
1716         if(prog->loaded)
1717                 PRVM_ResetProg();
1718
1719         memset(prog, 0, sizeof(prvm_prog_t));
1720
1721         prog->time = &prog->_time;
1722         prog->error_cmd = Host_Error;
1723 }
1724
1725 int PRVM_GetProgNr()
1726 {
1727         return prog - prog_list;
1728 }
1729
1730 void *_PRVM_Alloc(size_t buffersize, const char *filename, int fileline)
1731 {
1732         return _Mem_Alloc(prog->progs_mempool, buffersize, filename, fileline);
1733 }
1734
1735 void _PRVM_Free(void *buffer, const char *filename, int fileline)
1736 {
1737         _Mem_Free(buffer, filename, fileline);
1738 }
1739
1740 void _PRVM_FreeAll(const char *filename, int fileline)
1741 {
1742         prog->progs = NULL;
1743         prog->fielddefs = NULL;
1744         prog->functions = NULL;
1745         _Mem_EmptyPool(prog->progs_mempool, filename, fileline);
1746 }
1747
1748 // LordHavoc: turned PRVM_EDICT_NUM into a #define for speed reasons
1749 prvm_edict_t *PRVM_EDICT_NUM_ERROR(int n, char *filename, int fileline)
1750 {
1751         PRVM_ERROR ("PRVM_EDICT_NUM: %s: bad number %i (called at %s:%i)", PRVM_NAME, n, filename, fileline);
1752         return NULL;
1753 }
1754
1755 /*
1756 int NUM_FOR_EDICT_ERROR(prvm_edict_t *e)
1757 {
1758         PRVM_ERROR ("PRVM_NUM_FOR_EDICT: bad pointer %p (world is %p, entity number would be %i)", e, prog->edicts, e - prog->edicts);
1759         return 0;
1760 }
1761
1762 int PRVM_NUM_FOR_EDICT(prvm_edict_t *e)
1763 {
1764         int n;
1765         n = e - prog->edicts;
1766         if ((unsigned int)n >= prog->limit_edicts)
1767                 Host_Error ("PRVM_NUM_FOR_EDICT: bad pointer");
1768         return n;
1769 }
1770
1771 //int NoCrash_NUM_FOR_EDICT(prvm_edict_t *e)
1772 //{
1773 //      return e - prog->edicts;
1774 //}
1775
1776 //#define       PRVM_EDICT_TO_PROG(e) ((qbyte *)(((prvm_edict_t *)e)->v) - (qbyte *)(prog->edictsfields))
1777 //#define PRVM_PROG_TO_EDICT(e) (prog->edicts + ((e) / (progs->entityfields * 4)))
1778 int PRVM_EDICT_TO_PROG(prvm_edict_t *e)
1779 {
1780         int n;
1781         n = e - prog->edicts;
1782         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
1783                 Host_Error("PRVM_EDICT_TO_PROG: invalid edict %8p (number %i compared to world at %8p)\n", e, n, prog->edicts);
1784         return n;// EXPERIMENTAL
1785         //return (qbyte *)e->v - (qbyte *)prog->edictsfields;
1786 }
1787 prvm_edict_t *PRVM_PROG_TO_EDICT(int n)
1788 {
1789         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
1790                 Host_Error("PRVM_PROG_TO_EDICT: invalid edict number %i\n", n);
1791         return prog->edicts + n; // EXPERIMENTAL
1792         //return prog->edicts + ((n) / (progs->entityfields * 4));
1793 }
1794 */
1795
1796
1797 const char *PRVM_GetString(int num)
1798 {
1799         if (num >= 0 && num < prog->stringssize)
1800                 return prog->strings + num;
1801         else if (num < 0 && num >= -prog->numknownstrings)
1802         {
1803                 num = -1 - num;
1804                 if (!prog->knownstrings[num])
1805                         PRVM_ERROR("PRVM_GetString: attempt to get string that is already freed\n");
1806                 return prog->knownstrings[num];
1807         }
1808         else
1809         {
1810                 PRVM_ERROR("PRVM_GetString: invalid string offset %i\n", num);
1811                 return "";
1812         }
1813 }
1814
1815 int PRVM_SetEngineString(const char *s)
1816 {
1817         int i;
1818         if (!s)
1819                 return 0;
1820         if (s >= prog->strings && s <= prog->strings + prog->stringssize)
1821                 PRVM_ERROR("PRVM_SetEngineString: s in prog->strings area\n");
1822         for (i = 0;i < prog->numknownstrings;i++)
1823                 if (prog->knownstrings[i] == s)
1824                         return -1 - i;
1825         // new unknown engine string
1826         if (developer.integer >= 3)
1827                 Con_Printf("new engine string %p\n", s);
1828         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
1829                 if (!prog->knownstrings[i])
1830                         break;
1831         if (i >= prog->numknownstrings)
1832         {
1833                 if (i >= prog->maxknownstrings)
1834                 {
1835                         const char **oldstrings = prog->knownstrings;
1836                         prog->maxknownstrings += 128;
1837                         prog->knownstrings = PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
1838                         if (prog->numknownstrings)
1839                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
1840                 }
1841                 prog->numknownstrings++;
1842         }
1843         prog->firstfreeknownstring = i + 1;
1844         prog->knownstrings[i] = s;
1845         return -1 - i;
1846 }
1847
1848 int PRVM_AllocString(int bufferlength, char **pointer)
1849 {
1850         int i;
1851         if (!bufferlength)
1852                 return 0;
1853         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
1854                 if (!prog->knownstrings[i])
1855                         break;
1856         if (i >= prog->numknownstrings)
1857         {
1858                 if (i >= prog->maxknownstrings)
1859                 {
1860                         const char **oldstrings = prog->knownstrings;
1861                         prog->maxknownstrings += 128;
1862                         prog->knownstrings = PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
1863                         if (prog->numknownstrings)
1864                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
1865                 }
1866                 prog->numknownstrings++;
1867         }
1868         prog->firstfreeknownstring = i + 1;
1869         prog->knownstrings[i] = PRVM_Alloc(bufferlength);
1870         if (pointer)
1871                 *pointer = (char *)(prog->knownstrings[i]);
1872         return -1 - i;
1873 }
1874
1875 void PRVM_FreeString(int num)
1876 {
1877         if (num == 0)
1878                 PRVM_ERROR("PRVM_FreeString: attempt to free a NULL string\n");
1879         else if (num >= 0 && num < prog->stringssize)
1880                 PRVM_ERROR("PRVM_FreeString: attempt to free a constant string\n");
1881         else if (num < 0 && num >= -prog->numknownstrings)
1882         {
1883                 num = -1 - num;
1884                 if (!prog->knownstrings[num])
1885                         PRVM_ERROR("PRVM_FreeString: attempt to free a non-existent or already freed string\n");
1886                 PRVM_Free((char *)prog->knownstrings[num]);
1887                 prog->knownstrings[num] = NULL;
1888                 prog->firstfreeknownstring = min(prog->firstfreeknownstring, num);
1889         }
1890         else
1891                 PRVM_ERROR("PRVM_FreeString: invalid string offset %i\n", num);
1892 }
1893