Don't try to render something when height or width are zero.
[divverent/darkplaces.git] / prvm_edict.c
1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13 See the GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18
19 */
20 // AK new vm
21
22 #include "quakedef.h"
23 #include "progsvm.h"
24
25 prvm_prog_t *prog;
26
27 static prvm_prog_t prog_list[PRVM_MAXPROGS];
28
29 int             prvm_type_size[8] = {1,sizeof(string_t)/4,1,3,1,1,sizeof(func_t)/4,sizeof(void *)/4};
30
31 ddef_t *PRVM_ED_FieldAtOfs(int ofs);
32 qboolean PRVM_ED_ParseEpair(prvm_edict_t *ent, ddef_t *key, const char *s);
33
34 // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
35 #ifdef PRVM_BOUNDSCHECK_CVAR
36 cvar_t prvm_boundscheck = {0, "prvm_boundscheck", "1", "enables detection of out of bounds memory access in the QuakeC code being run (in other words, prevents really exceedingly bad QuakeC code from doing nasty things to your computer)"};
37 #endif
38 // LordHavoc: prints every opcode as it executes - warning: this is significant spew
39 cvar_t prvm_traceqc = {0, "prvm_traceqc", "0", "prints every QuakeC statement as it is executed (only for really thorough debugging!)"};
40 // LordHavoc: counts usage of each QuakeC statement
41 cvar_t prvm_statementprofiling = {0, "prvm_statementprofiling", "0", "counts how many times each QuakeC statement has been executed, these counts are displayed in prvm_printfunction output (if enabled)"};
42 cvar_t prvm_backtraceforwarnings = {0, "prvm_backtraceforwarnings", "0", "print a backtrace for warnings too"};
43
44 extern sizebuf_t vm_tempstringsbuf;
45
46 //============================================================================
47 // mempool handling
48
49 /*
50 ===============
51 PRVM_MEM_Alloc
52 ===============
53 */
54 void PRVM_MEM_Alloc(void)
55 {
56         int i;
57
58         // reserve space for the null entity aka world
59         // check bound of max_edicts
60         prog->max_edicts = bound(1 + prog->reserved_edicts, prog->max_edicts, prog->limit_edicts);
61         prog->num_edicts = bound(1 + prog->reserved_edicts, prog->num_edicts, prog->max_edicts);
62
63         // edictprivate_size has to be min as big prvm_edict_private_t
64         prog->edictprivate_size = max(prog->edictprivate_size,(int)sizeof(prvm_edict_private_t));
65
66         // alloc edicts
67         prog->edicts = (prvm_edict_t *)Mem_Alloc(prog->progs_mempool,prog->limit_edicts * sizeof(prvm_edict_t));
68
69         // alloc edict private space
70         prog->edictprivate = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edictprivate_size);
71
72         // alloc edict fields
73         prog->edictsfields = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edict_size);
74
75         // set edict pointers
76         for(i = 0; i < prog->max_edicts; i++)
77         {
78                 prog->edicts[i].priv.required = (prvm_edict_private_t *)((unsigned char  *)prog->edictprivate + i * prog->edictprivate_size);
79                 prog->edicts[i].fields.vp = (void*)((unsigned char *)prog->edictsfields + i * prog->edict_size);
80         }
81 }
82
83 /*
84 ===============
85 PRVM_MEM_IncreaseEdicts
86 ===============
87 */
88 void PRVM_MEM_IncreaseEdicts(void)
89 {
90         int             i;
91         int             oldmaxedicts = prog->max_edicts;
92         void    *oldedictsfields = prog->edictsfields;
93         void    *oldedictprivate = prog->edictprivate;
94
95         if(prog->max_edicts >= prog->limit_edicts)
96                 return;
97
98         PRVM_GCALL(begin_increase_edicts)();
99
100         // increase edicts
101         prog->max_edicts = min(prog->max_edicts + 256, prog->limit_edicts);
102
103         prog->edictsfields = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edict_size);
104         prog->edictprivate = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edictprivate_size);
105
106         memcpy(prog->edictsfields, oldedictsfields, oldmaxedicts * prog->edict_size);
107         memcpy(prog->edictprivate, oldedictprivate, oldmaxedicts * prog->edictprivate_size);
108
109         //set e and v pointers
110         for(i = 0; i < prog->max_edicts; i++)
111         {
112                 prog->edicts[i].priv.required  = (prvm_edict_private_t *)((unsigned char  *)prog->edictprivate + i * prog->edictprivate_size);
113                 prog->edicts[i].fields.vp = (void*)((unsigned char *)prog->edictsfields + i * prog->edict_size);
114         }
115
116         PRVM_GCALL(end_increase_edicts)();
117
118         Mem_Free(oldedictsfields);
119         Mem_Free(oldedictprivate);
120 }
121
122 //============================================================================
123 // normal prvm
124
125 int PRVM_ED_FindFieldOffset(const char *field)
126 {
127         ddef_t *d;
128         d = PRVM_ED_FindField(field);
129         if (!d)
130                 return -1;
131         return d->ofs;
132 }
133
134 int PRVM_ED_FindGlobalOffset(const char *global)
135 {
136         ddef_t *d;
137         d = PRVM_ED_FindGlobal(global);
138         if (!d)
139                 return -1;
140         return d->ofs;
141 }
142
143 func_t PRVM_ED_FindFunctionOffset(const char *function)
144 {
145         mfunction_t *f;
146         f = PRVM_ED_FindFunction(function);
147         if (!f)
148                 return 0;
149         return (func_t)(f - prog->functions);
150 }
151
152 qboolean PRVM_ProgLoaded(int prognr)
153 {
154         if(prognr < 0 || prognr >= PRVM_MAXPROGS)
155                 return FALSE;
156
157         return (prog_list[prognr].loaded ? TRUE : FALSE);
158 }
159
160 /*
161 =================
162 PRVM_SetProgFromString
163 =================
164 */
165 // perhaps add a return value when the str doesnt exist
166 qboolean PRVM_SetProgFromString(const char *str)
167 {
168         int i = 0;
169         for(; i < PRVM_MAXPROGS ; i++)
170                 if(prog_list[i].name && !strcmp(prog_list[i].name,str))
171                 {
172                         if(prog_list[i].loaded)
173                         {
174                                 prog = &prog_list[i];
175                                 return TRUE;
176                         }
177                         else
178                         {
179                                 Con_Printf("%s not loaded !\n",PRVM_NAME);
180                                 return FALSE;
181                         }
182                 }
183
184         Con_Printf("Invalid program name %s !\n", str);
185         return FALSE;
186 }
187
188 /*
189 =================
190 PRVM_SetProg
191 =================
192 */
193 void PRVM_SetProg(int prognr)
194 {
195         if(0 <= prognr && prognr < PRVM_MAXPROGS)
196         {
197                 if(prog_list[prognr].loaded)
198                         prog = &prog_list[prognr];
199                 else
200                         PRVM_ERROR("%i not loaded !", prognr);
201                 return;
202         }
203         PRVM_ERROR("Invalid program number %i", prognr);
204 }
205
206 /*
207 =================
208 PRVM_ED_ClearEdict
209
210 Sets everything to NULL
211 =================
212 */
213 void PRVM_ED_ClearEdict (prvm_edict_t *e)
214 {
215         memset (e->fields.vp, 0, prog->progs->entityfields * 4);
216         e->priv.required->free = false;
217
218         // AK: Let the init_edict function determine if something needs to be initialized
219         PRVM_GCALL(init_edict)(e);
220 }
221
222 /*
223 =================
224 PRVM_ED_Alloc
225
226 Either finds a free edict, or allocates a new one.
227 Try to avoid reusing an entity that was recently freed, because it
228 can cause the client to think the entity morphed into something else
229 instead of being removed and recreated, which can cause interpolated
230 angles and bad trails.
231 =================
232 */
233 prvm_edict_t *PRVM_ED_Alloc (void)
234 {
235         int                     i;
236         prvm_edict_t            *e;
237
238         // the client qc dont need maxclients
239         // thus it doesnt need to use svs.maxclients
240         // AK:  changed i=svs.maxclients+1
241         // AK:  changed so the edict 0 wont spawn -> used as reserved/world entity
242         //              although the menu/client has no world
243         for (i = prog->reserved_edicts + 1;i < prog->num_edicts;i++)
244         {
245                 e = PRVM_EDICT_NUM(i);
246                 // the first couple seconds of server time can involve a lot of
247                 // freeing and allocating, so relax the replacement policy
248                 if (e->priv.required->free && ( e->priv.required->freetime < 2 || prog->globaloffsets.time < 0 || (PRVM_GLOBALFIELDVALUE(prog->globaloffsets.time)->_float - e->priv.required->freetime) > 0.5 ) )
249                 {
250                         PRVM_ED_ClearEdict (e);
251                         return e;
252                 }
253         }
254
255         if (i == prog->limit_edicts)
256                 PRVM_ERROR ("%s: PRVM_ED_Alloc: no free edicts",PRVM_NAME);
257
258         prog->num_edicts++;
259         if (prog->num_edicts >= prog->max_edicts)
260                 PRVM_MEM_IncreaseEdicts();
261
262         e = PRVM_EDICT_NUM(i);
263         PRVM_ED_ClearEdict (e);
264
265         return e;
266 }
267
268 /*
269 =================
270 PRVM_ED_Free
271
272 Marks the edict as free
273 FIXME: walk all entities and NULL out references to this entity
274 =================
275 */
276 void PRVM_ED_Free (prvm_edict_t *ed)
277 {
278         // dont delete the null entity (world) or reserved edicts
279         if(PRVM_NUM_FOR_EDICT(ed) <= prog->reserved_edicts )
280                 return;
281
282         PRVM_GCALL(free_edict)(ed);
283
284         ed->priv.required->free = true;
285         ed->priv.required->freetime = prog->globaloffsets.time >= 0 ? PRVM_GLOBALFIELDVALUE(prog->globaloffsets.time)->_float : 0;
286 }
287
288 //===========================================================================
289
290 /*
291 ============
292 PRVM_ED_GlobalAtOfs
293 ============
294 */
295 ddef_t *PRVM_ED_GlobalAtOfs (int ofs)
296 {
297         ddef_t          *def;
298         int                     i;
299
300         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
301         {
302                 def = &prog->globaldefs[i];
303                 if (def->ofs == ofs)
304                         return def;
305         }
306         return NULL;
307 }
308
309 /*
310 ============
311 PRVM_ED_FieldAtOfs
312 ============
313 */
314 ddef_t *PRVM_ED_FieldAtOfs (int ofs)
315 {
316         ddef_t          *def;
317         int                     i;
318
319         for (i=0 ; i<prog->progs->numfielddefs ; i++)
320         {
321                 def = &prog->fielddefs[i];
322                 if (def->ofs == ofs)
323                         return def;
324         }
325         return NULL;
326 }
327
328 /*
329 ============
330 PRVM_ED_FindField
331 ============
332 */
333 ddef_t *PRVM_ED_FindField (const char *name)
334 {
335         ddef_t *def;
336         int i;
337
338         for (i=0 ; i<prog->progs->numfielddefs ; i++)
339         {
340                 def = &prog->fielddefs[i];
341                 if (!strcmp(PRVM_GetString(def->s_name), name))
342                         return def;
343         }
344         return NULL;
345 }
346
347 /*
348 ============
349 PRVM_ED_FindGlobal
350 ============
351 */
352 ddef_t *PRVM_ED_FindGlobal (const char *name)
353 {
354         ddef_t *def;
355         int i;
356
357         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
358         {
359                 def = &prog->globaldefs[i];
360                 if (!strcmp(PRVM_GetString(def->s_name), name))
361                         return def;
362         }
363         return NULL;
364 }
365
366
367 /*
368 ============
369 PRVM_ED_FindFunction
370 ============
371 */
372 mfunction_t *PRVM_ED_FindFunction (const char *name)
373 {
374         mfunction_t             *func;
375         int                             i;
376
377         for (i=0 ; i<prog->progs->numfunctions ; i++)
378         {
379                 func = &prog->functions[i];
380                 if (!strcmp(PRVM_GetString(func->s_name), name))
381                         return func;
382         }
383         return NULL;
384 }
385
386
387 /*
388 ============
389 PRVM_ValueString
390
391 Returns a string describing *data in a type specific manner
392 =============
393 */
394 char *PRVM_ValueString (etype_t type, prvm_eval_t *val)
395 {
396         static char line[MAX_INPUTLINE];
397         ddef_t *def;
398         mfunction_t *f;
399         int n;
400
401         type = (etype_t)((int) type & ~DEF_SAVEGLOBAL);
402
403         switch (type)
404         {
405         case ev_string:
406                 strlcpy (line, PRVM_GetString (val->string), sizeof (line));
407                 break;
408         case ev_entity:
409                 n = val->edict;
410                 if (n < 0 || n >= prog->limit_edicts)
411                         sprintf (line, "entity %i (invalid!)", n);
412                 else
413                         sprintf (line, "entity %i", n);
414                 break;
415         case ev_function:
416                 f = prog->functions + val->function;
417                 sprintf (line, "%s()", PRVM_GetString(f->s_name));
418                 break;
419         case ev_field:
420                 def = PRVM_ED_FieldAtOfs ( val->_int );
421                 sprintf (line, ".%s", PRVM_GetString(def->s_name));
422                 break;
423         case ev_void:
424                 sprintf (line, "void");
425                 break;
426         case ev_float:
427                 // LordHavoc: changed from %5.1f to %10.4f
428                 sprintf (line, "%10.4f", val->_float);
429                 break;
430         case ev_vector:
431                 // LordHavoc: changed from %5.1f to %10.4f
432                 sprintf (line, "'%10.4f %10.4f %10.4f'", val->vector[0], val->vector[1], val->vector[2]);
433                 break;
434         case ev_pointer:
435                 sprintf (line, "pointer");
436                 break;
437         default:
438                 sprintf (line, "bad type %i", (int) type);
439                 break;
440         }
441
442         return line;
443 }
444
445 /*
446 ============
447 PRVM_UglyValueString
448
449 Returns a string describing *data in a type specific manner
450 Easier to parse than PR_ValueString
451 =============
452 */
453 char *PRVM_UglyValueString (etype_t type, prvm_eval_t *val)
454 {
455         static char line[MAX_INPUTLINE];
456         int i;
457         const char *s;
458         ddef_t *def;
459         mfunction_t *f;
460
461         type = (etype_t)((int)type & ~DEF_SAVEGLOBAL);
462
463         switch (type)
464         {
465         case ev_string:
466                 // Parse the string a bit to turn special characters
467                 // (like newline, specifically) into escape codes,
468                 // this fixes saving games from various mods
469                 s = PRVM_GetString (val->string);
470                 for (i = 0;i < (int)sizeof(line) - 2 && *s;)
471                 {
472                         if (*s == '\n')
473                         {
474                                 line[i++] = '\\';
475                                 line[i++] = 'n';
476                         }
477                         else if (*s == '\r')
478                         {
479                                 line[i++] = '\\';
480                                 line[i++] = 'r';
481                         }
482                         else
483                                 line[i++] = *s;
484                         s++;
485                 }
486                 line[i] = '\0';
487                 break;
488         case ev_entity:
489                 dpsnprintf (line, sizeof (line), "%i", PRVM_NUM_FOR_EDICT(PRVM_PROG_TO_EDICT(val->edict)));
490                 break;
491         case ev_function:
492                 f = prog->functions + val->function;
493                 strlcpy (line, PRVM_GetString (f->s_name), sizeof (line));
494                 break;
495         case ev_field:
496                 def = PRVM_ED_FieldAtOfs ( val->_int );
497                 dpsnprintf (line, sizeof (line), ".%s", PRVM_GetString(def->s_name));
498                 break;
499         case ev_void:
500                 dpsnprintf (line, sizeof (line), "void");
501                 break;
502         case ev_float:
503                 dpsnprintf (line, sizeof (line), "%f", val->_float);
504                 break;
505         case ev_vector:
506                 dpsnprintf (line, sizeof (line), "%f %f %f", val->vector[0], val->vector[1], val->vector[2]);
507                 break;
508         default:
509                 dpsnprintf (line, sizeof (line), "bad type %i", type);
510                 break;
511         }
512
513         return line;
514 }
515
516 /*
517 ============
518 PRVM_GlobalString
519
520 Returns a string with a description and the contents of a global,
521 padded to 20 field width
522 ============
523 */
524 char *PRVM_GlobalString (int ofs)
525 {
526         char    *s;
527         //size_t        i;
528         ddef_t  *def;
529         void    *val;
530         static char     line[128];
531
532         val = (void *)&prog->globals.generic[ofs];
533         def = PRVM_ED_GlobalAtOfs(ofs);
534         if (!def)
535                 sprintf (line,"GLOBAL%i", ofs);
536         else
537         {
538                 s = PRVM_ValueString ((etype_t)def->type, (prvm_eval_t *)val);
539                 sprintf (line,"%s (=%s)", PRVM_GetString(def->s_name), s);
540         }
541
542         //i = strlen(line);
543         //for ( ; i<20 ; i++)
544         //      strcat (line," ");
545         //strcat (line," ");
546
547         return line;
548 }
549
550 char *PRVM_GlobalStringNoContents (int ofs)
551 {
552         //size_t        i;
553         ddef_t  *def;
554         static char     line[128];
555
556         def = PRVM_ED_GlobalAtOfs(ofs);
557         if (!def)
558                 sprintf (line,"GLOBAL%i", ofs);
559         else
560                 sprintf (line,"%s", PRVM_GetString(def->s_name));
561
562         //i = strlen(line);
563         //for ( ; i<20 ; i++)
564         //      strcat (line," ");
565         //strcat (line," ");
566
567         return line;
568 }
569
570
571 /*
572 =============
573 PRVM_ED_Print
574
575 For debugging
576 =============
577 */
578 // LordHavoc: optimized this to print out much more quickly (tempstring)
579 // LordHavoc: changed to print out every 4096 characters (incase there are a lot of fields to print)
580 void PRVM_ED_Print(prvm_edict_t *ed, const char *wildcard_fieldname)
581 {
582         size_t  l;
583         ddef_t  *d;
584         int             *v;
585         int             i, j;
586         const char      *name;
587         int             type;
588         char    tempstring[MAX_INPUTLINE], tempstring2[260]; // temporary string buffers
589
590         if (ed->priv.required->free)
591         {
592                 Con_Printf("%s: FREE\n",PRVM_NAME);
593                 return;
594         }
595
596         tempstring[0] = 0;
597         sprintf(tempstring, "\n%s EDICT %i:\n", PRVM_NAME, PRVM_NUM_FOR_EDICT(ed));
598         for (i=1 ; i<prog->progs->numfielddefs ; i++)
599         {
600                 d = &prog->fielddefs[i];
601                 name = PRVM_GetString(d->s_name);
602                 if (name[strlen(name)-2] == '_')
603                         continue;       // skip _x, _y, _z vars
604
605                 // Check Field Name Wildcard
606                 if(wildcard_fieldname)
607                         if( !matchpattern(name, wildcard_fieldname, 1) )
608                                 // Didn't match; skip
609                                 continue;
610
611                 v = (int *)((char *)ed->fields.vp + d->ofs*4);
612
613         // if the value is still all 0, skip the field
614                 type = d->type & ~DEF_SAVEGLOBAL;
615
616                 for (j=0 ; j<prvm_type_size[type] ; j++)
617                         if (v[j])
618                                 break;
619                 if (j == prvm_type_size[type])
620                         continue;
621
622                 if (strlen(name) > sizeof(tempstring2)-4)
623                 {
624                         memcpy (tempstring2, name, sizeof(tempstring2)-4);
625                         tempstring2[sizeof(tempstring2)-4] = tempstring2[sizeof(tempstring2)-3] = tempstring2[sizeof(tempstring2)-2] = '.';
626                         tempstring2[sizeof(tempstring2)-1] = 0;
627                         name = tempstring2;
628                 }
629                 strlcat(tempstring, name, sizeof(tempstring));
630                 for (l = strlen(name);l < 14;l++)
631                         strlcat(tempstring, " ", sizeof(tempstring));
632                 strlcat(tempstring, " ", sizeof(tempstring));
633
634                 name = PRVM_ValueString((etype_t)d->type, (prvm_eval_t *)v);
635                 if (strlen(name) > sizeof(tempstring2)-4)
636                 {
637                         memcpy (tempstring2, name, sizeof(tempstring2)-4);
638                         tempstring2[sizeof(tempstring2)-4] = tempstring2[sizeof(tempstring2)-3] = tempstring2[sizeof(tempstring2)-2] = '.';
639                         tempstring2[sizeof(tempstring2)-1] = 0;
640                         name = tempstring2;
641                 }
642                 strlcat(tempstring, name, sizeof(tempstring));
643                 strlcat(tempstring, "\n", sizeof(tempstring));
644                 if (strlen(tempstring) >= sizeof(tempstring)/2)
645                 {
646                         Con_Print(tempstring);
647                         tempstring[0] = 0;
648                 }
649         }
650         if (tempstring[0])
651                 Con_Print(tempstring);
652 }
653
654 /*
655 =============
656 PRVM_ED_Write
657
658 For savegames
659 =============
660 */
661 void PRVM_ED_Write (qfile_t *f, prvm_edict_t *ed)
662 {
663         ddef_t  *d;
664         int             *v;
665         int             i, j;
666         const char      *name;
667         int             type;
668
669         FS_Print(f, "{\n");
670
671         if (ed->priv.required->free)
672         {
673                 FS_Print(f, "}\n");
674                 return;
675         }
676
677         for (i=1 ; i<prog->progs->numfielddefs ; i++)
678         {
679                 d = &prog->fielddefs[i];
680                 name = PRVM_GetString(d->s_name);
681                 if (name[strlen(name)-2] == '_')
682                         continue;       // skip _x, _y, _z vars
683
684                 v = (int *)((char *)ed->fields.vp + d->ofs*4);
685
686         // if the value is still all 0, skip the field
687                 type = d->type & ~DEF_SAVEGLOBAL;
688                 for (j=0 ; j<prvm_type_size[type] ; j++)
689                         if (v[j])
690                                 break;
691                 if (j == prvm_type_size[type])
692                         continue;
693
694                 FS_Printf(f,"\"%s\" ",name);
695                 FS_Printf(f,"\"%s\"\n", PRVM_UglyValueString((etype_t)d->type, (prvm_eval_t *)v));
696         }
697
698         FS_Print(f, "}\n");
699 }
700
701 void PRVM_ED_PrintNum (int ent, const char *wildcard_fieldname)
702 {
703         PRVM_ED_Print(PRVM_EDICT_NUM(ent), wildcard_fieldname);
704 }
705
706 /*
707 =============
708 PRVM_ED_PrintEdicts_f
709
710 For debugging, prints all the entities in the current server
711 =============
712 */
713 void PRVM_ED_PrintEdicts_f (void)
714 {
715         int             i;
716         const char *wildcard_fieldname;
717
718         if(Cmd_Argc() < 2 || Cmd_Argc() > 3)
719         {
720                 Con_Print("prvm_edicts <program name> <optional field name wildcard>\n");
721                 return;
722         }
723
724         PRVM_Begin;
725         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
726                 return;
727
728         if( Cmd_Argc() == 3)
729                 wildcard_fieldname = Cmd_Argv(2);
730         else
731                 wildcard_fieldname = NULL;
732
733         Con_Printf("%s: %i entities\n", PRVM_NAME, prog->num_edicts);
734         for (i=0 ; i<prog->num_edicts ; i++)
735                 PRVM_ED_PrintNum (i, wildcard_fieldname);
736
737         PRVM_End;
738 }
739
740 /*
741 =============
742 PRVM_ED_PrintEdict_f
743
744 For debugging, prints a single edict
745 =============
746 */
747 void PRVM_ED_PrintEdict_f (void)
748 {
749         int             i;
750         const char      *wildcard_fieldname;
751
752         if(Cmd_Argc() < 3 || Cmd_Argc() > 4)
753         {
754                 Con_Print("prvm_edict <program name> <edict number> <optional field name wildcard>\n");
755                 return;
756         }
757
758         PRVM_Begin;
759         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
760                 return;
761
762         i = atoi (Cmd_Argv(2));
763         if (i >= prog->num_edicts)
764         {
765                 Con_Print("Bad edict number\n");
766                 PRVM_End;
767                 return;
768         }
769         if( Cmd_Argc() == 4)
770                 // Optional Wildcard Provided
771                 wildcard_fieldname = Cmd_Argv(3);
772         else
773                 // Use All
774                 wildcard_fieldname = NULL;
775         PRVM_ED_PrintNum (i, wildcard_fieldname);
776
777         PRVM_End;
778 }
779
780 /*
781 =============
782 PRVM_ED_Count
783
784 For debugging
785 =============
786 */
787 // 2 possibilities : 1. just displaying the active edict count
788 //                                       2. making a function pointer [x]
789 void PRVM_ED_Count_f (void)
790 {
791         int             i;
792         prvm_edict_t    *ent;
793         int             active;
794
795         if(Cmd_Argc() != 2)
796         {
797                 Con_Print("prvm_count <program name>\n");
798                 return;
799         }
800
801         PRVM_Begin;
802         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
803                 return;
804
805         if(prog->count_edicts)
806                 prog->count_edicts();
807         else
808         {
809                 active = 0;
810                 for (i=0 ; i<prog->num_edicts ; i++)
811                 {
812                         ent = PRVM_EDICT_NUM(i);
813                         if (ent->priv.required->free)
814                                 continue;
815                         active++;
816                 }
817
818                 Con_Printf("num_edicts:%3i\n", prog->num_edicts);
819                 Con_Printf("active    :%3i\n", active);
820         }
821
822         PRVM_End;
823 }
824
825 /*
826 ==============================================================================
827
828                                         ARCHIVING GLOBALS
829
830 FIXME: need to tag constants, doesn't really work
831 ==============================================================================
832 */
833
834 /*
835 =============
836 PRVM_ED_WriteGlobals
837 =============
838 */
839 void PRVM_ED_WriteGlobals (qfile_t *f)
840 {
841         ddef_t          *def;
842         int                     i;
843         const char              *name;
844         int                     type;
845
846         FS_Print(f,"{\n");
847         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
848         {
849                 def = &prog->globaldefs[i];
850                 type = def->type;
851                 if ( !(def->type & DEF_SAVEGLOBAL) )
852                         continue;
853                 type &= ~DEF_SAVEGLOBAL;
854
855                 if (type != ev_string && type != ev_float && type != ev_entity)
856                         continue;
857
858                 name = PRVM_GetString(def->s_name);
859                 FS_Printf(f,"\"%s\" ", name);
860                 FS_Printf(f,"\"%s\"\n", PRVM_UglyValueString((etype_t)type, (prvm_eval_t *)&prog->globals.generic[def->ofs]));
861         }
862         FS_Print(f,"}\n");
863 }
864
865 /*
866 =============
867 PRVM_ED_ParseGlobals
868 =============
869 */
870 void PRVM_ED_ParseGlobals (const char *data)
871 {
872         char keyname[MAX_INPUTLINE];
873         ddef_t *key;
874
875         while (1)
876         {
877                 // parse key
878                 if (!COM_ParseToken_Simple(&data, false, false))
879                         PRVM_ERROR ("PRVM_ED_ParseGlobals: EOF without closing brace");
880                 if (com_token[0] == '}')
881                         break;
882
883                 strlcpy (keyname, com_token, sizeof(keyname));
884
885                 // parse value
886                 if (!COM_ParseToken_Simple(&data, false, true))
887                         PRVM_ERROR ("PRVM_ED_ParseGlobals: EOF without closing brace");
888
889                 if (com_token[0] == '}')
890                         PRVM_ERROR ("PRVM_ED_ParseGlobals: closing brace without data");
891
892                 key = PRVM_ED_FindGlobal (keyname);
893                 if (!key)
894                 {
895                         Con_DPrintf("'%s' is not a global on %s\n", keyname, PRVM_NAME);
896                         continue;
897                 }
898
899                 if (!PRVM_ED_ParseEpair(NULL, key, com_token))
900                         PRVM_ERROR ("PRVM_ED_ParseGlobals: parse error");
901         }
902 }
903
904 //============================================================================
905
906
907 /*
908 =============
909 PRVM_ED_ParseEval
910
911 Can parse either fields or globals
912 returns false if error
913 =============
914 */
915 qboolean PRVM_ED_ParseEpair(prvm_edict_t *ent, ddef_t *key, const char *s)
916 {
917         int i, l;
918         char *new_p;
919         ddef_t *def;
920         prvm_eval_t *val;
921         mfunction_t *func;
922
923         if (ent)
924                 val = (prvm_eval_t *)((int *)ent->fields.vp + key->ofs);
925         else
926                 val = (prvm_eval_t *)((int *)prog->globals.generic + key->ofs);
927         switch (key->type & ~DEF_SAVEGLOBAL)
928         {
929         case ev_string:
930                 l = (int)strlen(s) + 1;
931                 val->string = PRVM_AllocString(l, &new_p);
932                 for (i = 0;i < l;i++)
933                 {
934                         if (s[i] == '\\' && i < l-1)
935                         {
936                                 i++;
937                                 if (s[i] == 'n')
938                                         *new_p++ = '\n';
939                                 else if (s[i] == 'r')
940                                         *new_p++ = '\r';
941                                 else
942                                         *new_p++ = s[i];
943                         }
944                         else
945                                 *new_p++ = s[i];
946                 }
947                 break;
948
949         case ev_float:
950                 while (*s && *s <= ' ')
951                         s++;
952                 val->_float = atof(s);
953                 break;
954
955         case ev_vector:
956                 for (i = 0;i < 3;i++)
957                 {
958                         while (*s && *s <= ' ')
959                                 s++;
960                         if (!*s)
961                                 break;
962                         val->vector[i] = atof(s);
963                         while (*s > ' ')
964                                 s++;
965                         if (!*s)
966                                 break;
967                 }
968                 break;
969
970         case ev_entity:
971                 while (*s && *s <= ' ')
972                         s++;
973                 i = atoi(s);
974                 if (i >= prog->limit_edicts)
975                         Con_Printf("PRVM_ED_ParseEpair: ev_entity reference too large (edict %u >= MAX_EDICTS %u) on %s\n", (unsigned int)i, (unsigned int)MAX_EDICTS, PRVM_NAME);
976                 while (i >= prog->max_edicts)
977                         PRVM_MEM_IncreaseEdicts();
978                 // if IncreaseEdicts was called the base pointer needs to be updated
979                 if (ent)
980                         val = (prvm_eval_t *)((int *)ent->fields.vp + key->ofs);
981                 val->edict = PRVM_EDICT_TO_PROG(PRVM_EDICT_NUM((int)i));
982                 break;
983
984         case ev_field:
985                 def = PRVM_ED_FindField(s);
986                 if (!def)
987                 {
988                         Con_DPrintf("PRVM_ED_ParseEpair: Can't find field %s in %s\n", s, PRVM_NAME);
989                         return false;
990                 }
991                 val->_int = def->ofs;
992                 break;
993
994         case ev_function:
995                 func = PRVM_ED_FindFunction(s);
996                 if (!func)
997                 {
998                         Con_Printf("PRVM_ED_ParseEpair: Can't find function %s in %s\n", s, PRVM_NAME);
999                         return false;
1000                 }
1001                 val->function = func - prog->functions;
1002                 break;
1003
1004         default:
1005                 Con_Printf("PRVM_ED_ParseEpair: Unknown key->type %i for key \"%s\" on %s\n", key->type, PRVM_GetString(key->s_name), PRVM_NAME);
1006                 return false;
1007         }
1008         return true;
1009 }
1010
1011 /*
1012 =============
1013 PRVM_GameCommand_f
1014
1015 Console command to send a string to QC function GameCommand of the
1016 indicated progs
1017
1018 Usage:
1019   sv_cmd adminmsg 3 "do not teamkill"
1020   cl_cmd someclientcommand
1021   menu_cmd somemenucommand
1022
1023 All progs can support this extension; sg calls it in server QC, cg in client
1024 QC, mg in menu QC.
1025 =============
1026 */
1027 void PRVM_GameCommand(const char *whichprogs, const char *whichcmd)
1028 {
1029         if(Cmd_Argc() < 1)
1030         {
1031                 Con_Printf("%s text...\n", whichcmd);
1032                 return;
1033         }
1034
1035         PRVM_Begin;
1036         if(!PRVM_SetProgFromString(whichprogs))
1037         // note: this is not PRVM_SetProg because that one aborts "hard" using PRVM_Error
1038         // also, it makes printing error messages easier!
1039         {
1040                 Con_Printf("%s program not loaded.\n", whichprogs);
1041                 return;
1042         }
1043
1044         if(!prog->funcoffsets.GameCommand)
1045         {
1046                 Con_Printf("%s program do not support GameCommand!\n", whichprogs);
1047         }
1048         else
1049         {
1050                 int restorevm_tempstringsbuf_cursize;
1051                 const char *s;
1052
1053                 s = Cmd_Args();
1054
1055                 restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
1056                 PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(s ? s : "");
1057                 PRVM_ExecuteProgram (prog->funcoffsets.GameCommand, "QC function GameCommand is missing");
1058                 vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
1059         }
1060
1061         PRVM_End;
1062 }
1063 void PRVM_GameCommand_Server_f(void)
1064 {
1065         PRVM_GameCommand("server", "sv_cmd");
1066 }
1067 void PRVM_GameCommand_Client_f(void)
1068 {
1069         PRVM_GameCommand("client", "cl_cmd");
1070 }
1071 void PRVM_GameCommand_Menu_f(void)
1072 {
1073         PRVM_GameCommand("menu", "menu_cmd");
1074 }
1075
1076 /*
1077 =============
1078 PRVM_ED_EdictSet_f
1079
1080 Console command to set a field of a specified edict
1081 =============
1082 */
1083 void PRVM_ED_EdictSet_f(void)
1084 {
1085         prvm_edict_t *ed;
1086         ddef_t *key;
1087
1088         if(Cmd_Argc() != 5)
1089         {
1090                 Con_Print("prvm_edictset <program name> <edict number> <field> <value>\n");
1091                 return;
1092         }
1093
1094         PRVM_Begin;
1095         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1096         {
1097                 Con_Printf("Wrong program name %s !\n", Cmd_Argv(1));
1098                 return;
1099         }
1100
1101         ed = PRVM_EDICT_NUM(atoi(Cmd_Argv(2)));
1102
1103         if((key = PRVM_ED_FindField(Cmd_Argv(3))) == 0)
1104                 Con_Printf("Key %s not found !\n", Cmd_Argv(3));
1105         else
1106                 PRVM_ED_ParseEpair(ed, key, Cmd_Argv(4));
1107
1108         PRVM_End;
1109 }
1110
1111 /*
1112 ====================
1113 PRVM_ED_ParseEdict
1114
1115 Parses an edict out of the given string, returning the new position
1116 ed should be a properly initialized empty edict.
1117 Used for initial level load and for savegames.
1118 ====================
1119 */
1120 extern cvar_t developer_entityparsing;
1121 const char *PRVM_ED_ParseEdict (const char *data, prvm_edict_t *ent)
1122 {
1123         ddef_t *key;
1124         qboolean anglehack;
1125         qboolean init;
1126         char keyname[256];
1127         size_t n;
1128
1129         init = false;
1130
1131 // go through all the dictionary pairs
1132         while (1)
1133         {
1134         // parse key
1135                 if (!COM_ParseToken_Simple(&data, false, false))
1136                         PRVM_ERROR ("PRVM_ED_ParseEdict: EOF without closing brace");
1137                 if (developer_entityparsing.integer)
1138                         Con_Printf("Key: \"%s\"", com_token);
1139                 if (com_token[0] == '}')
1140                         break;
1141
1142                 // anglehack is to allow QuakeEd to write single scalar angles
1143                 // and allow them to be turned into vectors. (FIXME...)
1144                 if (!strcmp(com_token, "angle"))
1145                 {
1146                         strlcpy (com_token, "angles", sizeof(com_token));
1147                         anglehack = true;
1148                 }
1149                 else
1150                         anglehack = false;
1151
1152                 // FIXME: change light to _light to get rid of this hack
1153                 if (!strcmp(com_token, "light"))
1154                         strlcpy (com_token, "light_lev", sizeof(com_token));    // hack for single light def
1155
1156                 strlcpy (keyname, com_token, sizeof(keyname));
1157
1158                 // another hack to fix keynames with trailing spaces
1159                 n = strlen(keyname);
1160                 while (n && keyname[n-1] == ' ')
1161                 {
1162                         keyname[n-1] = 0;
1163                         n--;
1164                 }
1165
1166         // parse value
1167                 if (!COM_ParseToken_Simple(&data, false, true))
1168                         PRVM_ERROR ("PRVM_ED_ParseEdict: EOF without closing brace");
1169                 if (developer_entityparsing.integer)
1170                         Con_Printf(" \"%s\"\n", com_token);
1171
1172                 if (com_token[0] == '}')
1173                         PRVM_ERROR ("PRVM_ED_ParseEdict: closing brace without data");
1174
1175                 init = true;
1176
1177                 // ignore attempts to set key "" (this problem occurs in nehahra neh1m8.bsp)
1178                 if (!keyname[0])
1179                         continue;
1180
1181 // keynames with a leading underscore are used for utility comments,
1182 // and are immediately discarded by quake
1183                 if (keyname[0] == '_')
1184                         continue;
1185
1186                 key = PRVM_ED_FindField (keyname);
1187                 if (!key)
1188                 {
1189                         Con_DPrintf("%s: '%s' is not a field\n", PRVM_NAME, keyname);
1190                         continue;
1191                 }
1192
1193                 if (anglehack)
1194                 {
1195                         char    temp[32];
1196                         strlcpy (temp, com_token, sizeof(temp));
1197                         sprintf (com_token, "0 %s 0", temp);
1198                 }
1199
1200                 if (!PRVM_ED_ParseEpair(ent, key, com_token))
1201                         PRVM_ERROR ("PRVM_ED_ParseEdict: parse error");
1202         }
1203
1204         if (!init)
1205                 ent->priv.required->free = true;
1206
1207         return data;
1208 }
1209
1210
1211 /*
1212 ================
1213 PRVM_ED_LoadFromFile
1214
1215 The entities are directly placed in the array, rather than allocated with
1216 PRVM_ED_Alloc, because otherwise an error loading the map would have entity
1217 number references out of order.
1218
1219 Creates a server's entity / program execution context by
1220 parsing textual entity definitions out of an ent file.
1221
1222 Used for both fresh maps and savegame loads.  A fresh map would also need
1223 to call PRVM_ED_CallSpawnFunctions () to let the objects initialize themselves.
1224 ================
1225 */
1226 void PRVM_ED_LoadFromFile (const char *data)
1227 {
1228         prvm_edict_t *ent;
1229         int parsed, inhibited, spawned, died;
1230         const char *funcname;
1231         mfunction_t *func;
1232
1233         parsed = 0;
1234         inhibited = 0;
1235         spawned = 0;
1236         died = 0;
1237
1238
1239 // parse ents
1240         while (1)
1241         {
1242 // parse the opening brace
1243                 if (!COM_ParseToken_Simple(&data, false, false))
1244                         break;
1245                 if (com_token[0] != '{')
1246                         PRVM_ERROR ("PRVM_ED_LoadFromFile: %s: found %s when expecting {", PRVM_NAME, com_token);
1247
1248                 // CHANGED: this is not conform to PR_LoadFromFile
1249                 if(prog->loadintoworld)
1250                 {
1251                         prog->loadintoworld = false;
1252                         ent = PRVM_EDICT_NUM(0);
1253                 }
1254                 else
1255                         ent = PRVM_ED_Alloc();
1256
1257                 // clear it
1258                 if (ent != prog->edicts)        // hack
1259                         memset (ent->fields.vp, 0, prog->progs->entityfields * 4);
1260
1261                 data = PRVM_ED_ParseEdict (data, ent);
1262                 parsed++;
1263
1264                 // remove the entity ?
1265                 if(prog->load_edict && !prog->load_edict(ent))
1266                 {
1267                         PRVM_ED_Free(ent);
1268                         inhibited++;
1269                         continue;
1270                 }
1271
1272 //
1273 // immediately call spawn function, but only if there is a self global and a classname
1274 //
1275                 if(prog->globaloffsets.self >= 0 && prog->fieldoffsets.classname >= 0)
1276                 {
1277                         string_t handle =  PRVM_EDICTFIELDVALUE(ent, prog->fieldoffsets.classname)->string;
1278                         if (!handle)
1279                         {
1280                                 Con_Print("No classname for:\n");
1281                                 PRVM_ED_Print(ent, NULL);
1282                                 PRVM_ED_Free (ent);
1283                                 continue;
1284                         }
1285
1286                         // look for the spawn function
1287                         funcname = PRVM_GetString(handle);
1288                         func = PRVM_ED_FindFunction (va("spawnfunc_%s", funcname));
1289                         if(!func)
1290                                 func = PRVM_ED_FindFunction (funcname);
1291
1292                         if (!func)
1293                         {
1294                                 // check for OnEntityNoSpawnFunction
1295                                 if (prog->funcoffsets.SV_OnEntityNoSpawnFunction)
1296                                 {
1297                                         // self = ent
1298                                         PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict = PRVM_EDICT_TO_PROG(ent);
1299                                         PRVM_ExecuteProgram (prog->funcoffsets.SV_OnEntityNoSpawnFunction, "QC function SV_OnEntityNoSpawnFunction is missing");
1300                                 }
1301                                 else
1302                                 {
1303                                         if (developer.integer) // don't confuse non-developers with errors
1304                                         {
1305                                                 Con_Print("No spawn function for:\n");
1306                                                 PRVM_ED_Print(ent, NULL);
1307                                         }
1308                                         PRVM_ED_Free (ent);
1309                                         continue;
1310                                 }
1311                         }
1312                         else
1313                         {
1314                                 // self = ent
1315                                 PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict = PRVM_EDICT_TO_PROG(ent);
1316                                 PRVM_ExecuteProgram (func - prog->functions, "");
1317                         }
1318                 }
1319
1320                 spawned++;
1321                 if (ent->priv.required->free)
1322                         died++;
1323         }
1324
1325         Con_DPrintf("%s: %i new entities parsed, %i new inhibited, %i (%i new) spawned (whereas %i removed self, %i stayed)\n", PRVM_NAME, parsed, inhibited, prog->num_edicts, spawned, died, spawned - died);
1326 }
1327
1328 void PRVM_FindOffsets(void)
1329 {
1330         // field and global searches use -1 for NULL
1331         memset(&prog->fieldoffsets, -1, sizeof(prog->fieldoffsets));
1332         memset(&prog->globaloffsets, -1, sizeof(prog->globaloffsets));
1333         // functions use 0 for NULL
1334         memset(&prog->funcoffsets, 0, sizeof(prog->funcoffsets));
1335
1336         // server and client qc use a lot of similar fields, so this is combined
1337         prog->fieldoffsets.SendEntity                     = PRVM_ED_FindFieldOffset("SendEntity");
1338         prog->fieldoffsets.Version                        = PRVM_ED_FindFieldOffset("Version");
1339         prog->fieldoffsets.alpha                          = PRVM_ED_FindFieldOffset("alpha");
1340         prog->fieldoffsets.ammo_cells1                    = PRVM_ED_FindFieldOffset("ammo_cells1");
1341         prog->fieldoffsets.ammo_lava_nails                = PRVM_ED_FindFieldOffset("ammo_lava_nails");
1342         prog->fieldoffsets.ammo_multi_rockets             = PRVM_ED_FindFieldOffset("ammo_multi_rockets");
1343         prog->fieldoffsets.ammo_nails1                    = PRVM_ED_FindFieldOffset("ammo_nails1");
1344         prog->fieldoffsets.ammo_plasma                    = PRVM_ED_FindFieldOffset("ammo_plasma");
1345         prog->fieldoffsets.ammo_rockets1                  = PRVM_ED_FindFieldOffset("ammo_rockets1");
1346         prog->fieldoffsets.ammo_shells1                   = PRVM_ED_FindFieldOffset("ammo_shells1");
1347         prog->fieldoffsets.angles                         = PRVM_ED_FindFieldOffset("angles");
1348         prog->fieldoffsets.button3                        = PRVM_ED_FindFieldOffset("button3");
1349         prog->fieldoffsets.button4                        = PRVM_ED_FindFieldOffset("button4");
1350         prog->fieldoffsets.button5                        = PRVM_ED_FindFieldOffset("button5");
1351         prog->fieldoffsets.button6                        = PRVM_ED_FindFieldOffset("button6");
1352         prog->fieldoffsets.button7                        = PRVM_ED_FindFieldOffset("button7");
1353         prog->fieldoffsets.button8                        = PRVM_ED_FindFieldOffset("button8");
1354         prog->fieldoffsets.button9                        = PRVM_ED_FindFieldOffset("button9");
1355         prog->fieldoffsets.button10                       = PRVM_ED_FindFieldOffset("button10");
1356         prog->fieldoffsets.button11                       = PRVM_ED_FindFieldOffset("button11");
1357         prog->fieldoffsets.button12                       = PRVM_ED_FindFieldOffset("button12");
1358         prog->fieldoffsets.button13                       = PRVM_ED_FindFieldOffset("button13");
1359         prog->fieldoffsets.button14                       = PRVM_ED_FindFieldOffset("button14");
1360         prog->fieldoffsets.button15                       = PRVM_ED_FindFieldOffset("button15");
1361         prog->fieldoffsets.button16                       = PRVM_ED_FindFieldOffset("button16");
1362         prog->fieldoffsets.buttonchat                     = PRVM_ED_FindFieldOffset("buttonchat");
1363         prog->fieldoffsets.buttonuse                      = PRVM_ED_FindFieldOffset("buttonuse");
1364         prog->fieldoffsets.chain                          = PRVM_ED_FindFieldOffset("chain");
1365         prog->fieldoffsets.classname                      = PRVM_ED_FindFieldOffset("classname");
1366         prog->fieldoffsets.clientcolors                   = PRVM_ED_FindFieldOffset("clientcolors");
1367         prog->fieldoffsets.color                          = PRVM_ED_FindFieldOffset("color");
1368         prog->fieldoffsets.colormod                       = PRVM_ED_FindFieldOffset("colormod");
1369         prog->fieldoffsets.contentstransition             = PRVM_ED_FindFieldOffset("contentstransition");
1370         prog->fieldoffsets.cursor_active                  = PRVM_ED_FindFieldOffset("cursor_active");
1371         prog->fieldoffsets.cursor_screen                  = PRVM_ED_FindFieldOffset("cursor_screen");
1372         prog->fieldoffsets.cursor_trace_endpos            = PRVM_ED_FindFieldOffset("cursor_trace_endpos");
1373         prog->fieldoffsets.cursor_trace_ent               = PRVM_ED_FindFieldOffset("cursor_trace_ent");
1374         prog->fieldoffsets.cursor_trace_start             = PRVM_ED_FindFieldOffset("cursor_trace_start");
1375         prog->fieldoffsets.customizeentityforclient       = PRVM_ED_FindFieldOffset("customizeentityforclient");
1376         prog->fieldoffsets.dimension_hit                  = PRVM_ED_FindFieldOffset("dimension_hit");
1377         prog->fieldoffsets.dimension_solid                = PRVM_ED_FindFieldOffset("dimension_solid");
1378         prog->fieldoffsets.disableclientprediction        = PRVM_ED_FindFieldOffset("disableclientprediction");
1379         prog->fieldoffsets.dphitcontentsmask              = PRVM_ED_FindFieldOffset("dphitcontentsmask");
1380         prog->fieldoffsets.drawonlytoclient               = PRVM_ED_FindFieldOffset("drawonlytoclient");
1381         prog->fieldoffsets.exteriormodeltoclient          = PRVM_ED_FindFieldOffset("exteriormodeltoclient");
1382         prog->fieldoffsets.fatness                        = PRVM_ED_FindFieldOffset("fatness");
1383         prog->fieldoffsets.forceshader                    = PRVM_ED_FindFieldOffset("forceshader");
1384         prog->fieldoffsets.frame                          = PRVM_ED_FindFieldOffset("frame");
1385         prog->fieldoffsets.frame1time                     = PRVM_ED_FindFieldOffset("frame1time");
1386         prog->fieldoffsets.frame2                         = PRVM_ED_FindFieldOffset("frame2");
1387         prog->fieldoffsets.frame2time                     = PRVM_ED_FindFieldOffset("frame2time");
1388         prog->fieldoffsets.fullbright                     = PRVM_ED_FindFieldOffset("fullbright");
1389         prog->fieldoffsets.glow_color                     = PRVM_ED_FindFieldOffset("glow_color");
1390         prog->fieldoffsets.glow_size                      = PRVM_ED_FindFieldOffset("glow_size");
1391         prog->fieldoffsets.glow_trail                     = PRVM_ED_FindFieldOffset("glow_trail");
1392         prog->fieldoffsets.gravity                        = PRVM_ED_FindFieldOffset("gravity");
1393         prog->fieldoffsets.groundentity                   = PRVM_ED_FindFieldOffset("groundentity");
1394         prog->fieldoffsets.hull                           = PRVM_ED_FindFieldOffset("hull");
1395         prog->fieldoffsets.ideal_yaw                      = PRVM_ED_FindFieldOffset("ideal_yaw");
1396         prog->fieldoffsets.idealpitch                     = PRVM_ED_FindFieldOffset("idealpitch");
1397         prog->fieldoffsets.items2                         = PRVM_ED_FindFieldOffset("items2");
1398         prog->fieldoffsets.lerpfrac                       = PRVM_ED_FindFieldOffset("lerpfrac");
1399         prog->fieldoffsets.light_lev                      = PRVM_ED_FindFieldOffset("light_lev");
1400         prog->fieldoffsets.message                        = PRVM_ED_FindFieldOffset("message");
1401         prog->fieldoffsets.modelflags                     = PRVM_ED_FindFieldOffset("modelflags");
1402         prog->fieldoffsets.movement                       = PRVM_ED_FindFieldOffset("movement");
1403         prog->fieldoffsets.netaddress                     = PRVM_ED_FindFieldOffset("netaddress");
1404         prog->fieldoffsets.nextthink                      = PRVM_ED_FindFieldOffset("nextthink");
1405         prog->fieldoffsets.nodrawtoclient                 = PRVM_ED_FindFieldOffset("nodrawtoclient");
1406         prog->fieldoffsets.pflags                         = PRVM_ED_FindFieldOffset("pflags");
1407         prog->fieldoffsets.ping                           = PRVM_ED_FindFieldOffset("ping");
1408         prog->fieldoffsets.pitch_speed                    = PRVM_ED_FindFieldOffset("pitch_speed");
1409         prog->fieldoffsets.playermodel                    = PRVM_ED_FindFieldOffset("playermodel");
1410         prog->fieldoffsets.playerskin                     = PRVM_ED_FindFieldOffset("playerskin");
1411         prog->fieldoffsets.pmodel                         = PRVM_ED_FindFieldOffset("pmodel");
1412         prog->fieldoffsets.punchvector                    = PRVM_ED_FindFieldOffset("punchvector");
1413         prog->fieldoffsets.renderamt                      = PRVM_ED_FindFieldOffset("renderamt"); // HalfLife support
1414         prog->fieldoffsets.renderflags                    = PRVM_ED_FindFieldOffset("renderflags");
1415         prog->fieldoffsets.rendermode                     = PRVM_ED_FindFieldOffset("rendermode"); // HalfLife support
1416         prog->fieldoffsets.scale                          = PRVM_ED_FindFieldOffset("scale");
1417         prog->fieldoffsets.style                          = PRVM_ED_FindFieldOffset("style");
1418         prog->fieldoffsets.tag_entity                     = PRVM_ED_FindFieldOffset("tag_entity");
1419         prog->fieldoffsets.tag_index                      = PRVM_ED_FindFieldOffset("tag_index");
1420         prog->fieldoffsets.think                          = PRVM_ED_FindFieldOffset("think");
1421         prog->fieldoffsets.viewmodelforclient             = PRVM_ED_FindFieldOffset("viewmodelforclient");
1422         prog->fieldoffsets.viewzoom                       = PRVM_ED_FindFieldOffset("viewzoom");
1423         prog->fieldoffsets.yaw_speed                      = PRVM_ED_FindFieldOffset("yaw_speed");
1424         prog->fieldoffsets.clientcamera                   = PRVM_ED_FindFieldOffset("clientcamera");
1425         prog->funcoffsets.CSQC_ConsoleCommand             = PRVM_ED_FindFunctionOffset("CSQC_ConsoleCommand");
1426         prog->funcoffsets.CSQC_Ent_Remove                 = PRVM_ED_FindFunctionOffset("CSQC_Ent_Remove");
1427         prog->funcoffsets.CSQC_Ent_Update                 = PRVM_ED_FindFunctionOffset("CSQC_Ent_Update");
1428         prog->funcoffsets.CSQC_Ent_Spawn                  = PRVM_ED_FindFunctionOffset("CSQC_Ent_Spawn");
1429         prog->funcoffsets.CSQC_Event                      = PRVM_ED_FindFunctionOffset("CSQC_Event");
1430         prog->funcoffsets.CSQC_Event_Sound                = PRVM_ED_FindFunctionOffset("CSQC_Event_Sound");
1431         prog->funcoffsets.CSQC_Init                       = PRVM_ED_FindFunctionOffset("CSQC_Init");
1432         prog->funcoffsets.CSQC_InputEvent                 = PRVM_ED_FindFunctionOffset("CSQC_InputEvent");
1433         prog->funcoffsets.CSQC_Parse_CenterPrint          = PRVM_ED_FindFunctionOffset("CSQC_Parse_CenterPrint");
1434         prog->funcoffsets.CSQC_Parse_Print                = PRVM_ED_FindFunctionOffset("CSQC_Parse_Print");
1435         prog->funcoffsets.CSQC_Parse_StuffCmd             = PRVM_ED_FindFunctionOffset("CSQC_Parse_StuffCmd");
1436         prog->funcoffsets.CSQC_Parse_TempEntity           = PRVM_ED_FindFunctionOffset("CSQC_Parse_TempEntity");
1437         prog->funcoffsets.CSQC_Shutdown                   = PRVM_ED_FindFunctionOffset("CSQC_Shutdown");
1438         prog->funcoffsets.CSQC_UpdateView                 = PRVM_ED_FindFunctionOffset("CSQC_UpdateView");
1439         prog->funcoffsets.Gecko_Query                     = PRVM_ED_FindFunctionOffset("Gecko_Query");
1440         prog->funcoffsets.EndFrame                        = PRVM_ED_FindFunctionOffset("EndFrame");
1441         prog->funcoffsets.RestoreGame                     = PRVM_ED_FindFunctionOffset("RestoreGame");
1442         prog->funcoffsets.SV_ChangeTeam                   = PRVM_ED_FindFunctionOffset("SV_ChangeTeam");
1443         prog->funcoffsets.SV_ParseClientCommand           = PRVM_ED_FindFunctionOffset("SV_ParseClientCommand");
1444         prog->funcoffsets.SV_PlayerPhysics                = PRVM_ED_FindFunctionOffset("SV_PlayerPhysics");
1445         prog->funcoffsets.SV_OnEntityNoSpawnFunction      = PRVM_ED_FindFunctionOffset("SV_OnEntityNoSpawnFunction");
1446         prog->funcoffsets.GameCommand                     = PRVM_ED_FindFunctionOffset("GameCommand");
1447         prog->funcoffsets.SV_Shutdown                     = PRVM_ED_FindFunctionOffset("SV_Shutdown");
1448         prog->globaloffsets.SV_InitCmd                    = PRVM_ED_FindGlobalOffset("SV_InitCmd");
1449         prog->globaloffsets.self                          = PRVM_ED_FindGlobalOffset("self");
1450         prog->globaloffsets.time                          = PRVM_ED_FindGlobalOffset("time");
1451         prog->globaloffsets.v_forward                     = PRVM_ED_FindGlobalOffset("v_forward");
1452         prog->globaloffsets.v_right                       = PRVM_ED_FindGlobalOffset("v_right");
1453         prog->globaloffsets.v_up                          = PRVM_ED_FindGlobalOffset("v_up");
1454         prog->globaloffsets.view_angles                   = PRVM_ED_FindGlobalOffset("view_angles");
1455         prog->globaloffsets.trace_allsolid                = PRVM_ED_FindGlobalOffset("trace_allsolid");
1456         prog->globaloffsets.trace_startsolid              = PRVM_ED_FindGlobalOffset("trace_startsolid");
1457         prog->globaloffsets.trace_fraction                = PRVM_ED_FindGlobalOffset("trace_fraction");
1458         prog->globaloffsets.trace_inwater                 = PRVM_ED_FindGlobalOffset("trace_inwater");
1459         prog->globaloffsets.trace_inopen                  = PRVM_ED_FindGlobalOffset("trace_inopen");
1460         prog->globaloffsets.trace_endpos                  = PRVM_ED_FindGlobalOffset("trace_endpos");
1461         prog->globaloffsets.trace_plane_normal            = PRVM_ED_FindGlobalOffset("trace_plane_normal");
1462         prog->globaloffsets.trace_plane_dist              = PRVM_ED_FindGlobalOffset("trace_plane_dist");
1463         prog->globaloffsets.trace_ent                     = PRVM_ED_FindGlobalOffset("trace_ent");
1464         prog->globaloffsets.trace_dphitcontents           = PRVM_ED_FindGlobalOffset("trace_dphitcontents");
1465         prog->globaloffsets.trace_dphitq3surfaceflags     = PRVM_ED_FindGlobalOffset("trace_dphitq3surfaceflags");
1466         prog->globaloffsets.trace_dphittexturename        = PRVM_ED_FindGlobalOffset("trace_dphittexturename");
1467         prog->globaloffsets.trace_dpstartcontents         = PRVM_ED_FindGlobalOffset("trace_dpstartcontents");
1468         prog->globaloffsets.intermission                  = PRVM_ED_FindGlobalOffset("intermission");
1469         prog->globaloffsets.coop                          = PRVM_ED_FindGlobalOffset("coop");
1470         prog->globaloffsets.deathmatch                    = PRVM_ED_FindGlobalOffset("deathmatch");
1471         prog->globaloffsets.dmg_take                      = PRVM_ED_FindGlobalOffset("dmg_take");
1472         prog->globaloffsets.dmg_save                      = PRVM_ED_FindGlobalOffset("dmg_save");
1473         prog->globaloffsets.dmg_origin                    = PRVM_ED_FindGlobalOffset("dmg_origin");
1474         prog->globaloffsets.sb_showscores                 = PRVM_ED_FindGlobalOffset("sb_showscores");
1475         prog->globaloffsets.drawfont                      = PRVM_ED_FindGlobalOffset("drawfont");
1476
1477         // menu qc only uses some functions, nothing else
1478         prog->funcoffsets.m_draw                          = PRVM_ED_FindFunctionOffset("m_draw");
1479         prog->funcoffsets.m_init                          = PRVM_ED_FindFunctionOffset("m_init");
1480         prog->funcoffsets.m_keydown                       = PRVM_ED_FindFunctionOffset("m_keydown");
1481         prog->funcoffsets.m_keyup                         = PRVM_ED_FindFunctionOffset("m_keyup");
1482         prog->funcoffsets.m_shutdown                      = PRVM_ED_FindFunctionOffset("m_shutdown");
1483         prog->funcoffsets.m_toggle                        = PRVM_ED_FindFunctionOffset("m_toggle");
1484 }
1485
1486 // not used
1487 /*
1488 typedef struct dpfield_s
1489 {
1490         int type;
1491         char *string;
1492 }
1493 dpfield_t;
1494
1495 #define DPFIELDS (sizeof(dpfields) / sizeof(dpfield_t))
1496
1497 dpfield_t dpfields[] =
1498 {
1499 };
1500 */
1501
1502 /*
1503 ===============
1504 PRVM_ResetProg
1505 ===============
1506 */
1507
1508 void PRVM_ResetProg()
1509 {
1510         PRVM_GCALL(reset_cmd)();
1511         Mem_FreePool(&prog->progs_mempool);
1512         memset(prog,0,sizeof(prvm_prog_t));
1513         prog->starttime = Sys_DoubleTime();
1514 }
1515
1516 /*
1517 ===============
1518 PRVM_LoadLNO
1519 ===============
1520 */
1521 void PRVM_LoadLNO( const char *progname ) {
1522         fs_offset_t filesize;
1523         unsigned char *lno;
1524         unsigned int *header;
1525         char filename[512];
1526
1527         FS_StripExtension( progname, filename, sizeof( filename ) );
1528         strlcat( filename, ".lno", sizeof( filename ) );
1529
1530         lno = FS_LoadFile( filename, tempmempool, false, &filesize );
1531         if( !lno ) {
1532                 return;
1533         }
1534
1535 /*
1536 <Spike>    SafeWrite (h, &lnotype, sizeof(int));
1537 <Spike>    SafeWrite (h, &version, sizeof(int));
1538 <Spike>    SafeWrite (h, &numglobaldefs, sizeof(int));
1539 <Spike>    SafeWrite (h, &numpr_globals, sizeof(int));
1540 <Spike>    SafeWrite (h, &numfielddefs, sizeof(int));
1541 <Spike>    SafeWrite (h, &numstatements, sizeof(int));
1542 <Spike>    SafeWrite (h, statement_linenums, numstatements*sizeof(int));
1543 */
1544         if( (unsigned) filesize < (6 + prog->progs->numstatements) * sizeof( int ) ) {
1545                 Mem_Free(lno);
1546                 return;
1547         }
1548
1549         header = (unsigned int *) lno;
1550         if( header[ 0 ] == *(unsigned int *) "LNOF" &&
1551                 LittleLong( header[ 1 ] ) == 1 &&
1552                 (unsigned int)LittleLong( header[ 2 ] ) == (unsigned int)prog->progs->numglobaldefs &&
1553                 (unsigned int)LittleLong( header[ 3 ] ) == (unsigned int)prog->progs->numglobals &&
1554                 (unsigned int)LittleLong( header[ 4 ] ) == (unsigned int)prog->progs->numfielddefs &&
1555                 (unsigned int)LittleLong( header[ 5 ] ) == (unsigned int)prog->progs->numstatements )
1556         {
1557                 prog->statement_linenums = (int *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof( int ) );
1558                 memcpy( prog->statement_linenums, (int *) lno + 6, prog->progs->numstatements * sizeof( int ) );
1559         }
1560         Mem_Free( lno );
1561 }
1562
1563 /*
1564 ===============
1565 PRVM_LoadProgs
1566 ===============
1567 */
1568 void PRVM_LoadProgs (const char * filename, int numrequiredfunc, char **required_func, int numrequiredfields, prvm_required_field_t *required_field, int numrequiredglobals, char **required_global)
1569 {
1570         int i;
1571         dstatement_t *st;
1572         ddef_t *infielddefs;
1573         dfunction_t *dfunctions;
1574         fs_offset_t filesize;
1575
1576         if( prog->loaded ) {
1577                 PRVM_ERROR ("PRVM_LoadProgs: there is already a %s program loaded!", PRVM_NAME );
1578         }
1579
1580         prog->progs = (dprograms_t *)FS_LoadFile (filename, prog->progs_mempool, false, &filesize);
1581         if (prog->progs == NULL || filesize < (fs_offset_t)sizeof(dprograms_t))
1582                 PRVM_ERROR ("PRVM_LoadProgs: couldn't load %s for %s", filename, PRVM_NAME);
1583
1584         Con_DPrintf("%s programs occupy %iK.\n", PRVM_NAME, (int)(filesize/1024));
1585
1586         prog->filecrc = CRC_Block((unsigned char *)prog->progs, filesize);
1587
1588 // byte swap the header
1589         for (i = 0;i < (int) sizeof(*prog->progs) / 4;i++)
1590                 ((int *)prog->progs)[i] = LittleLong ( ((int *)prog->progs)[i] );
1591
1592         if (prog->progs->version != PROG_VERSION)
1593                 PRVM_ERROR ("%s: %s has wrong version number (%i should be %i)", PRVM_NAME, filename, prog->progs->version, PROG_VERSION);
1594         if (prog->progs->crc != prog->headercrc && prog->progs->crc != prog->headercrc2)
1595                 PRVM_ERROR ("%s: %s system vars have been modified (CRC of progs.dat systemvars %i != engine %i), progdefs.h is out of date", PRVM_NAME, filename, prog->progs->crc, prog->headercrc);
1596
1597         //prog->functions = (dfunction_t *)((unsigned char *)progs + progs->ofs_functions);
1598         dfunctions = (dfunction_t *)((unsigned char *)prog->progs + prog->progs->ofs_functions);
1599
1600         if (prog->progs->ofs_strings + prog->progs->numstrings >= (int)filesize)
1601                 PRVM_ERROR ("%s: %s strings go past end of file", PRVM_NAME, filename);
1602         prog->strings = (char *)prog->progs + prog->progs->ofs_strings;
1603         prog->stringssize = prog->progs->numstrings;
1604
1605         prog->numknownstrings = 0;
1606         prog->maxknownstrings = 0;
1607         prog->knownstrings = NULL;
1608         prog->knownstrings_freeable = NULL;
1609
1610         Mem_ExpandableArray_NewArray(&prog->stringbuffersarray, prog->progs_mempool, sizeof(prvm_stringbuffer_t), 64);
1611
1612         prog->globaldefs = (ddef_t *)((unsigned char *)prog->progs + prog->progs->ofs_globaldefs);
1613
1614         // we need to expand the fielddefs list to include all the engine fields,
1615         // so allocate a new place for it
1616         infielddefs = (ddef_t *)((unsigned char *)prog->progs + prog->progs->ofs_fielddefs);
1617         //                                                                                              ( + DPFIELDS                       )
1618         prog->fielddefs = (ddef_t *)Mem_Alloc(prog->progs_mempool, (prog->progs->numfielddefs + numrequiredfields) * sizeof(ddef_t));
1619
1620         prog->statements = (dstatement_t *)((unsigned char *)prog->progs + prog->progs->ofs_statements);
1621
1622         prog->statement_profile = (double *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof(*prog->statement_profile));
1623
1624         // moved edict_size calculation down below field adding code
1625
1626         //pr_global_struct = (globalvars_t *)((unsigned char *)progs + progs->ofs_globals);
1627         prog->globals.generic = (float *)((unsigned char *)prog->progs + prog->progs->ofs_globals);
1628
1629 // byte swap the lumps
1630         for (i=0 ; i<prog->progs->numstatements ; i++)
1631         {
1632                 prog->statements[i].op = LittleShort(prog->statements[i].op);
1633                 prog->statements[i].a = LittleShort(prog->statements[i].a);
1634                 prog->statements[i].b = LittleShort(prog->statements[i].b);
1635                 prog->statements[i].c = LittleShort(prog->statements[i].c);
1636         }
1637
1638         prog->functions = (mfunction_t *)Mem_Alloc(prog->progs_mempool, sizeof(mfunction_t) * prog->progs->numfunctions);
1639         for (i = 0;i < prog->progs->numfunctions;i++)
1640         {
1641                 prog->functions[i].first_statement = LittleLong (dfunctions[i].first_statement);
1642                 prog->functions[i].parm_start = LittleLong (dfunctions[i].parm_start);
1643                 prog->functions[i].s_name = LittleLong (dfunctions[i].s_name);
1644                 prog->functions[i].s_file = LittleLong (dfunctions[i].s_file);
1645                 prog->functions[i].numparms = LittleLong (dfunctions[i].numparms);
1646                 prog->functions[i].locals = LittleLong (dfunctions[i].locals);
1647                 memcpy(prog->functions[i].parm_size, dfunctions[i].parm_size, sizeof(dfunctions[i].parm_size));
1648         }
1649
1650         for (i=0 ; i<prog->progs->numglobaldefs ; i++)
1651         {
1652                 prog->globaldefs[i].type = LittleShort (prog->globaldefs[i].type);
1653                 prog->globaldefs[i].ofs = LittleShort (prog->globaldefs[i].ofs);
1654                 prog->globaldefs[i].s_name = LittleLong (prog->globaldefs[i].s_name);
1655         }
1656
1657         // copy the progs fields to the new fields list
1658         for (i = 0;i < prog->progs->numfielddefs;i++)
1659         {
1660                 prog->fielddefs[i].type = LittleShort (infielddefs[i].type);
1661                 if (prog->fielddefs[i].type & DEF_SAVEGLOBAL)
1662                         PRVM_ERROR ("PRVM_LoadProgs: prog->fielddefs[i].type & DEF_SAVEGLOBAL in %s", PRVM_NAME);
1663                 prog->fielddefs[i].ofs = LittleShort (infielddefs[i].ofs);
1664                 prog->fielddefs[i].s_name = LittleLong (infielddefs[i].s_name);
1665         }
1666
1667         // append the required fields
1668         for (i = 0;i < (int) numrequiredfields;i++)
1669         {
1670                 prog->fielddefs[prog->progs->numfielddefs].type = required_field[i].type;
1671                 prog->fielddefs[prog->progs->numfielddefs].ofs = prog->progs->entityfields;
1672                 prog->fielddefs[prog->progs->numfielddefs].s_name = PRVM_SetEngineString(required_field[i].name);
1673                 if (prog->fielddefs[prog->progs->numfielddefs].type == ev_vector)
1674                         prog->progs->entityfields += 3;
1675                 else
1676                         prog->progs->entityfields++;
1677                 prog->progs->numfielddefs++;
1678         }
1679
1680         // check required functions
1681         for(i=0 ; i < numrequiredfunc ; i++)
1682                 if(PRVM_ED_FindFunction(required_func[i]) == 0)
1683                         PRVM_ERROR("%s: %s not found in %s",PRVM_NAME, required_func[i], filename);
1684
1685         // check required globals
1686         for(i=0 ; i < numrequiredglobals ; i++)
1687                 if(PRVM_ED_FindGlobal(required_global[i]) == 0)
1688                         PRVM_ERROR("%s: %s not found in %s",PRVM_NAME, required_global[i], filename);
1689
1690         for (i=0 ; i<prog->progs->numglobals ; i++)
1691                 ((int *)prog->globals.generic)[i] = LittleLong (((int *)prog->globals.generic)[i]);
1692
1693         // moved edict_size calculation down here, below field adding code
1694         // LordHavoc: this no longer includes the prvm_edict_t header
1695         prog->edict_size = prog->progs->entityfields * 4;
1696         prog->edictareasize = prog->edict_size * prog->limit_edicts;
1697
1698         // LordHavoc: bounds check anything static
1699         for (i = 0,st = prog->statements;i < prog->progs->numstatements;i++,st++)
1700         {
1701                 switch (st->op)
1702                 {
1703                 case OP_IF:
1704                 case OP_IFNOT:
1705                         if ((unsigned short) st->a >= prog->progs->numglobals || st->b + i < 0 || st->b + i >= prog->progs->numstatements)
1706                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds IF/IFNOT (statement %d) in %s", i, PRVM_NAME);
1707                         break;
1708                 case OP_GOTO:
1709                         if (st->a + i < 0 || st->a + i >= prog->progs->numstatements)
1710                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds GOTO (statement %d) in %s", i, PRVM_NAME);
1711                         break;
1712                 // global global global
1713                 case OP_ADD_F:
1714                 case OP_ADD_V:
1715                 case OP_SUB_F:
1716                 case OP_SUB_V:
1717                 case OP_MUL_F:
1718                 case OP_MUL_V:
1719                 case OP_MUL_FV:
1720                 case OP_MUL_VF:
1721                 case OP_DIV_F:
1722                 case OP_BITAND:
1723                 case OP_BITOR:
1724                 case OP_GE:
1725                 case OP_LE:
1726                 case OP_GT:
1727                 case OP_LT:
1728                 case OP_AND:
1729                 case OP_OR:
1730                 case OP_EQ_F:
1731                 case OP_EQ_V:
1732                 case OP_EQ_S:
1733                 case OP_EQ_E:
1734                 case OP_EQ_FNC:
1735                 case OP_NE_F:
1736                 case OP_NE_V:
1737                 case OP_NE_S:
1738                 case OP_NE_E:
1739                 case OP_NE_FNC:
1740                 case OP_ADDRESS:
1741                 case OP_LOAD_F:
1742                 case OP_LOAD_FLD:
1743                 case OP_LOAD_ENT:
1744                 case OP_LOAD_S:
1745                 case OP_LOAD_FNC:
1746                 case OP_LOAD_V:
1747                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1748                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d)", i);
1749                         break;
1750                 // global none global
1751                 case OP_NOT_F:
1752                 case OP_NOT_V:
1753                 case OP_NOT_S:
1754                 case OP_NOT_FNC:
1755                 case OP_NOT_ENT:
1756                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1757                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1758                         break;
1759                 // 2 globals
1760                 case OP_STOREP_F:
1761                 case OP_STOREP_ENT:
1762                 case OP_STOREP_FLD:
1763                 case OP_STOREP_S:
1764                 case OP_STOREP_FNC:
1765                 case OP_STORE_F:
1766                 case OP_STORE_ENT:
1767                 case OP_STORE_FLD:
1768                 case OP_STORE_S:
1769                 case OP_STORE_FNC:
1770                 case OP_STATE:
1771                 case OP_STOREP_V:
1772                 case OP_STORE_V:
1773                         if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals)
1774                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1775                         break;
1776                 // 1 global
1777                 case OP_CALL0:
1778                 case OP_CALL1:
1779                 case OP_CALL2:
1780                 case OP_CALL3:
1781                 case OP_CALL4:
1782                 case OP_CALL5:
1783                 case OP_CALL6:
1784                 case OP_CALL7:
1785                 case OP_CALL8:
1786                 case OP_DONE:
1787                 case OP_RETURN:
1788                         if ((unsigned short) st->a >= prog->progs->numglobals)
1789                                 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1790                         break;
1791                 default:
1792                         Con_DPrintf("PRVM_LoadProgs: unknown opcode %d at statement %d in %s\n", st->op, i, PRVM_NAME);
1793                         break;
1794                 }
1795         }
1796
1797         PRVM_LoadLNO(filename);
1798
1799         PRVM_Init_Exec();
1800
1801         prog->loaded = TRUE;
1802
1803         // set flags & ddef_ts in prog
1804
1805         prog->flag = 0;
1806
1807         PRVM_FindOffsets();
1808
1809         PRVM_GCALL(init_cmd)();
1810
1811         // init mempools
1812         PRVM_MEM_Alloc();
1813 }
1814
1815
1816 void PRVM_Fields_f (void)
1817 {
1818         int i, j, ednum, used, usedamount;
1819         int *counts;
1820         char tempstring[MAX_INPUTLINE], tempstring2[260];
1821         const char *name;
1822         prvm_edict_t *ed;
1823         ddef_t *d;
1824         int *v;
1825
1826         // TODO
1827         /*
1828         if (!sv.active)
1829         {
1830                 Con_Print("no progs loaded\n");
1831                 return;
1832         }
1833         */
1834
1835         if(Cmd_Argc() != 2)
1836         {
1837                 Con_Print("prvm_fields <program name>\n");
1838                 return;
1839         }
1840
1841         PRVM_Begin;
1842         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1843                 return;
1844
1845         counts = (int *)Mem_Alloc(tempmempool, prog->progs->numfielddefs * sizeof(int));
1846         for (ednum = 0;ednum < prog->max_edicts;ednum++)
1847         {
1848                 ed = PRVM_EDICT_NUM(ednum);
1849                 if (ed->priv.required->free)
1850                         continue;
1851                 for (i = 1;i < prog->progs->numfielddefs;i++)
1852                 {
1853                         d = &prog->fielddefs[i];
1854                         name = PRVM_GetString(d->s_name);
1855                         if (name[strlen(name)-2] == '_')
1856                                 continue;       // skip _x, _y, _z vars
1857                         v = (int *)((char *)ed->fields.vp + d->ofs*4);
1858                         // if the value is still all 0, skip the field
1859                         for (j = 0;j < prvm_type_size[d->type & ~DEF_SAVEGLOBAL];j++)
1860                         {
1861                                 if (v[j])
1862                                 {
1863                                         counts[i]++;
1864                                         break;
1865                                 }
1866                         }
1867                 }
1868         }
1869         used = 0;
1870         usedamount = 0;
1871         tempstring[0] = 0;
1872         for (i = 0;i < prog->progs->numfielddefs;i++)
1873         {
1874                 d = &prog->fielddefs[i];
1875                 name = PRVM_GetString(d->s_name);
1876                 if (name[strlen(name)-2] == '_')
1877                         continue;       // skip _x, _y, _z vars
1878                 switch(d->type & ~DEF_SAVEGLOBAL)
1879                 {
1880                 case ev_string:
1881                         strlcat(tempstring, "string   ", sizeof(tempstring));
1882                         break;
1883                 case ev_entity:
1884                         strlcat(tempstring, "entity   ", sizeof(tempstring));
1885                         break;
1886                 case ev_function:
1887                         strlcat(tempstring, "function ", sizeof(tempstring));
1888                         break;
1889                 case ev_field:
1890                         strlcat(tempstring, "field    ", sizeof(tempstring));
1891                         break;
1892                 case ev_void:
1893                         strlcat(tempstring, "void     ", sizeof(tempstring));
1894                         break;
1895                 case ev_float:
1896                         strlcat(tempstring, "float    ", sizeof(tempstring));
1897                         break;
1898                 case ev_vector:
1899                         strlcat(tempstring, "vector   ", sizeof(tempstring));
1900                         break;
1901                 case ev_pointer:
1902                         strlcat(tempstring, "pointer  ", sizeof(tempstring));
1903                         break;
1904                 default:
1905                         sprintf (tempstring2, "bad type %i ", d->type & ~DEF_SAVEGLOBAL);
1906                         strlcat(tempstring, tempstring2, sizeof(tempstring));
1907                         break;
1908                 }
1909                 if (strlen(name) > sizeof(tempstring2)-4)
1910                 {
1911                         memcpy (tempstring2, name, sizeof(tempstring2)-4);
1912                         tempstring2[sizeof(tempstring2)-4] = tempstring2[sizeof(tempstring2)-3] = tempstring2[sizeof(tempstring2)-2] = '.';
1913                         tempstring2[sizeof(tempstring2)-1] = 0;
1914                         name = tempstring2;
1915                 }
1916                 strlcat(tempstring, name, sizeof(tempstring));
1917                 for (j = (int)strlen(name);j < 25;j++)
1918                         strlcat(tempstring, " ", sizeof(tempstring));
1919                 sprintf(tempstring2, "%5d", counts[i]);
1920                 strlcat(tempstring, tempstring2, sizeof(tempstring));
1921                 strlcat(tempstring, "\n", sizeof(tempstring));
1922                 if (strlen(tempstring) >= sizeof(tempstring)/2)
1923                 {
1924                         Con_Print(tempstring);
1925                         tempstring[0] = 0;
1926                 }
1927                 if (counts[i])
1928                 {
1929                         used++;
1930                         usedamount += prvm_type_size[d->type & ~DEF_SAVEGLOBAL];
1931                 }
1932         }
1933         Mem_Free(counts);
1934         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);
1935
1936         PRVM_End;
1937 }
1938
1939 void PRVM_Globals_f (void)
1940 {
1941         int i;
1942         const char *wildcard;
1943         int numculled;
1944                 numculled = 0;
1945         // TODO
1946         /*if (!sv.active)
1947         {
1948                 Con_Print("no progs loaded\n");
1949                 return;
1950         }*/
1951         if(Cmd_Argc () < 2 || Cmd_Argc() > 3)
1952         {
1953                 Con_Print("prvm_globals <program name> <optional name wildcard>\n");
1954                 return;
1955         }
1956
1957         PRVM_Begin;
1958         if(!PRVM_SetProgFromString (Cmd_Argv (1)))
1959                 return;
1960
1961         if( Cmd_Argc() == 3)
1962                 wildcard = Cmd_Argv(2);
1963         else
1964                 wildcard = NULL;
1965
1966         Con_Printf("%s :", PRVM_NAME);
1967
1968         for (i = 0;i < prog->progs->numglobaldefs;i++)
1969         {
1970                 if(wildcard)
1971                         if( !matchpattern( PRVM_GetString(prog->globaldefs[i].s_name), wildcard, 1) )
1972                         {
1973                                 numculled++;
1974                                 continue;
1975                         }
1976                 Con_Printf("%s\n", PRVM_GetString(prog->globaldefs[i].s_name));
1977         }
1978         Con_Printf("%i global variables, %i culled, totalling %i bytes\n", prog->progs->numglobals, numculled, prog->progs->numglobals * 4);
1979
1980         PRVM_End;
1981 }
1982
1983 /*
1984 ===============
1985 PRVM_Global
1986 ===============
1987 */
1988 void PRVM_Global_f(void)
1989 {
1990         ddef_t *global;
1991         if( Cmd_Argc() != 3 ) {
1992                 Con_Printf( "prvm_global <program name> <global name>\n" );
1993                 return;
1994         }
1995
1996         PRVM_Begin;
1997         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1998                 return;
1999
2000         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
2001         if( !global )
2002                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
2003         else
2004                 Con_Printf( "%s: %s\n", Cmd_Argv(2), PRVM_ValueString( (etype_t)global->type, (prvm_eval_t *) &prog->globals.generic[ global->ofs ] ) );
2005         PRVM_End;
2006 }
2007
2008 /*
2009 ===============
2010 PRVM_GlobalSet
2011 ===============
2012 */
2013 void PRVM_GlobalSet_f(void)
2014 {
2015         ddef_t *global;
2016         if( Cmd_Argc() != 4 ) {
2017                 Con_Printf( "prvm_globalset <program name> <global name> <value>\n" );
2018                 return;
2019         }
2020
2021         PRVM_Begin;
2022         if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
2023                 return;
2024
2025         global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
2026         if( !global )
2027                 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
2028         else
2029                 PRVM_ED_ParseEpair( NULL, global, Cmd_Argv(3) );
2030         PRVM_End;
2031 }
2032
2033 /*
2034 ===============
2035 PRVM_Init
2036 ===============
2037 */
2038 void PRVM_Init (void)
2039 {
2040         Cmd_AddCommand ("prvm_edict", PRVM_ED_PrintEdict_f, "print all data about an entity number in the selected VM (server, client, menu)");
2041         Cmd_AddCommand ("prvm_edicts", PRVM_ED_PrintEdicts_f, "prints all data about all entities in the selected VM (server, client, menu)");
2042         Cmd_AddCommand ("prvm_edictcount", PRVM_ED_Count_f, "prints number of active entities in the selected VM (server, client, menu)");
2043         Cmd_AddCommand ("prvm_profile", PRVM_Profile_f, "prints execution statistics about the most used QuakeC functions in the selected VM (server, client, menu)");
2044         Cmd_AddCommand ("prvm_callprofile", PRVM_CallProfile_f, "prints execution statistics about the most time consuming QuakeC calls from the engine in the selected VM (server, client, menu)");
2045         Cmd_AddCommand ("prvm_fields", PRVM_Fields_f, "prints usage statistics on properties (how many entities have non-zero values) in the selected VM (server, client, menu)");
2046         Cmd_AddCommand ("prvm_globals", PRVM_Globals_f, "prints all global variables in the selected VM (server, client, menu)");
2047         Cmd_AddCommand ("prvm_global", PRVM_Global_f, "prints value of a specified global variable in the selected VM (server, client, menu)");
2048         Cmd_AddCommand ("prvm_globalset", PRVM_GlobalSet_f, "sets value of a specified global variable in the selected VM (server, client, menu)");
2049         Cmd_AddCommand ("prvm_edictset", PRVM_ED_EdictSet_f, "changes value of a specified property of a specified entity in the selected VM (server, client, menu)");
2050         Cmd_AddCommand ("prvm_printfunction", PRVM_PrintFunction_f, "prints a disassembly (QuakeC instructions) of the specified function in the selected VM (server, client, menu)");
2051         Cmd_AddCommand ("cl_cmd", PRVM_GameCommand_Client_f, "calls the client QC function GameCommand with the supplied string as argument");
2052         Cmd_AddCommand ("menu_cmd", PRVM_GameCommand_Menu_f, "calls the menu QC function GameCommand with the supplied string as argument");
2053         Cmd_AddCommand ("sv_cmd", PRVM_GameCommand_Server_f, "calls the server QC function GameCommand with the supplied string as argument");
2054         // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
2055 #ifdef PRVM_BOUNDSCHECK_CVAR
2056         Cvar_RegisterVariable (&prvm_boundscheck);
2057 #endif
2058         Cvar_RegisterVariable (&prvm_traceqc);
2059         Cvar_RegisterVariable (&prvm_statementprofiling);
2060         Cvar_RegisterVariable (&prvm_backtraceforwarnings);
2061
2062         //VM_Cmd_Init();
2063 }
2064
2065 /*
2066 ===============
2067 PRVM_InitProg
2068 ===============
2069 */
2070 void PRVM_InitProg(int prognr)
2071 {
2072         if(prognr < 0 || prognr >= PRVM_MAXPROGS)
2073                 Sys_Error("PRVM_InitProg: Invalid program number %i",prognr);
2074
2075         prog = &prog_list[prognr];
2076
2077         if(prog->loaded)
2078                 PRVM_ResetProg();
2079
2080         memset(prog, 0, sizeof(prvm_prog_t));
2081         prog->starttime = Sys_DoubleTime();
2082
2083         prog->error_cmd = Host_Error;
2084 }
2085
2086 int PRVM_GetProgNr()
2087 {
2088         return prog - prog_list;
2089 }
2090
2091 void *_PRVM_Alloc(size_t buffersize, const char *filename, int fileline)
2092 {
2093         return _Mem_Alloc(prog->progs_mempool, buffersize, filename, fileline);
2094 }
2095
2096 void _PRVM_Free(void *buffer, const char *filename, int fileline)
2097 {
2098         _Mem_Free(buffer, filename, fileline);
2099 }
2100
2101 void _PRVM_FreeAll(const char *filename, int fileline)
2102 {
2103         prog->progs = NULL;
2104         prog->fielddefs = NULL;
2105         prog->functions = NULL;
2106         _Mem_EmptyPool(prog->progs_mempool, filename, fileline);
2107 }
2108
2109 // LordHavoc: turned PRVM_EDICT_NUM into a #define for speed reasons
2110 unsigned int PRVM_EDICT_NUM_ERROR(unsigned int n, char *filename, int fileline)
2111 {
2112         PRVM_ERROR ("PRVM_EDICT_NUM: %s: bad number %i (called at %s:%i)", PRVM_NAME, n, filename, fileline);
2113         return 0;
2114 }
2115
2116 /*
2117 int NUM_FOR_EDICT_ERROR(prvm_edict_t *e)
2118 {
2119         PRVM_ERROR ("PRVM_NUM_FOR_EDICT: bad pointer %p (world is %p, entity number would be %i)", e, prog->edicts, e - prog->edicts);
2120         return 0;
2121 }
2122
2123 int PRVM_NUM_FOR_EDICT(prvm_edict_t *e)
2124 {
2125         int n;
2126         n = e - prog->edicts;
2127         if ((unsigned int)n >= prog->limit_edicts)
2128                 Host_Error ("PRVM_NUM_FOR_EDICT: bad pointer");
2129         return n;
2130 }
2131
2132 //int NoCrash_NUM_FOR_EDICT(prvm_edict_t *e)
2133 //{
2134 //      return e - prog->edicts;
2135 //}
2136
2137 //#define       PRVM_EDICT_TO_PROG(e) ((unsigned char *)(((prvm_edict_t *)e)->v) - (unsigned char *)(prog->edictsfields))
2138 //#define PRVM_PROG_TO_EDICT(e) (prog->edicts + ((e) / (progs->entityfields * 4)))
2139 int PRVM_EDICT_TO_PROG(prvm_edict_t *e)
2140 {
2141         int n;
2142         n = e - prog->edicts;
2143         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
2144                 Host_Error("PRVM_EDICT_TO_PROG: invalid edict %8p (number %i compared to world at %8p)", e, n, prog->edicts);
2145         return n;// EXPERIMENTAL
2146         //return (unsigned char *)e->v - (unsigned char *)prog->edictsfields;
2147 }
2148 prvm_edict_t *PRVM_PROG_TO_EDICT(int n)
2149 {
2150         if ((unsigned int)n >= (unsigned int)prog->max_edicts)
2151                 Host_Error("PRVM_PROG_TO_EDICT: invalid edict number %i", n);
2152         return prog->edicts + n; // EXPERIMENTAL
2153         //return prog->edicts + ((n) / (progs->entityfields * 4));
2154 }
2155 */
2156
2157
2158 sizebuf_t vm_tempstringsbuf;
2159
2160 const char *PRVM_GetString(int num)
2161 {
2162         if (num >= 0)
2163         {
2164                 if (num < prog->stringssize)
2165                         return prog->strings + num;
2166                 else
2167 #if 1
2168                 if (num <= prog->stringssize + vm_tempstringsbuf.maxsize)
2169                 {
2170                         num -= prog->stringssize;
2171                         if (num < vm_tempstringsbuf.cursize)
2172                                 return (char *)vm_tempstringsbuf.data + num;
2173                         else
2174                         {
2175                                 VM_Warning("PRVM_GetString: Invalid temp-string offset (%i >= %i vm_tempstringsbuf.cursize)\n", num, vm_tempstringsbuf.cursize);
2176                                 return "";
2177                         }
2178                 }
2179                 else
2180 #endif
2181                 {
2182                         VM_Warning("PRVM_GetString: Invalid constant-string offset (%i >= %i prog->stringssize)\n", num, prog->stringssize);
2183                         return "";
2184                 }
2185         }
2186         else
2187         {
2188                 num = -1 - num;
2189 #if 0
2190                 if (num >= (1<<30))
2191                 {
2192                         // special range reserved for tempstrings
2193                         num -= (1<<30);
2194                         if (num < vm_tempstringsbuf.cursize)
2195                                 return (char *)vm_tempstringsbuf.data + num;
2196                         else
2197                         {
2198                                 VM_Warning("PRVM_GetString: Invalid temp-string offset (%i >= %i vm_tempstringsbuf.cursize)\n", num, vm_tempstringsbuf.cursize);
2199                                 return "";
2200                         }
2201                 }
2202                 else
2203 #endif
2204                 if (num < prog->numknownstrings)
2205                 {
2206                         if (!prog->knownstrings[num])
2207                                 VM_Warning("PRVM_GetString: Invalid zone-string offset (%i has been freed)\n", num);
2208                         return prog->knownstrings[num];
2209                 }
2210                 else
2211                 {
2212                         VM_Warning("PRVM_GetString: Invalid zone-string offset (%i >= %i)\n", num, prog->numknownstrings);
2213                         return "";
2214                 }
2215         }
2216 }
2217
2218 int PRVM_SetEngineString(const char *s)
2219 {
2220         int i;
2221         if (!s)
2222                 return 0;
2223         if (s >= prog->strings && s <= prog->strings + prog->stringssize)
2224                 PRVM_ERROR("PRVM_SetEngineString: s in prog->strings area");
2225         // if it's in the tempstrings area, use a reserved range
2226         // (otherwise we'd get millions of useless string offsets cluttering the database)
2227         if (s >= (char *)vm_tempstringsbuf.data && s < (char *)vm_tempstringsbuf.data + vm_tempstringsbuf.maxsize)
2228 #if 1
2229                 return prog->stringssize + (s - (char *)vm_tempstringsbuf.data);
2230 #else
2231                 return -1 - ((1<<30) + (s - (char *)vm_tempstringsbuf.data));
2232 #endif
2233         // see if it's a known string address
2234         for (i = 0;i < prog->numknownstrings;i++)
2235                 if (prog->knownstrings[i] == s)
2236                         return -1 - i;
2237         // new unknown engine string
2238         if (developer.integer >= 200)
2239                 Con_Printf("new engine string %p = \"%s\"\n", s, s);
2240         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
2241                 if (!prog->knownstrings[i])
2242                         break;
2243         if (i >= prog->numknownstrings)
2244         {
2245                 if (i >= prog->maxknownstrings)
2246                 {
2247                         const char **oldstrings = prog->knownstrings;
2248                         const unsigned char *oldstrings_freeable = prog->knownstrings_freeable;
2249                         prog->maxknownstrings += 128;
2250                         prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
2251                         prog->knownstrings_freeable = (unsigned char *)PRVM_Alloc(prog->maxknownstrings * sizeof(unsigned char));
2252                         if (prog->numknownstrings)
2253                         {
2254                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
2255                                 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(unsigned char));
2256                         }
2257                 }
2258                 prog->numknownstrings++;
2259         }
2260         prog->firstfreeknownstring = i + 1;
2261         prog->knownstrings[i] = s;
2262         return -1 - i;
2263 }
2264
2265 // temp string handling
2266
2267 // all tempstrings go into this buffer consecutively, and it is reset
2268 // whenever PRVM_ExecuteProgram returns to the engine
2269 // (technically each PRVM_ExecuteProgram call saves the cursize value and
2270 //  restores it on return, so multiple recursive calls can share the same
2271 //  buffer)
2272 // the buffer size is automatically grown as needed
2273
2274 int PRVM_SetTempString(const char *s)
2275 {
2276         int size;
2277         char *t;
2278         if (!s)
2279                 return 0;
2280         size = (int)strlen(s) + 1;
2281         if (developer.integer >= 300)
2282                 Con_Printf("PRVM_SetTempString: cursize %i, size %i\n", vm_tempstringsbuf.cursize, size);
2283         if (vm_tempstringsbuf.maxsize < vm_tempstringsbuf.cursize + size)
2284         {
2285                 sizebuf_t old = vm_tempstringsbuf;
2286                 if (vm_tempstringsbuf.cursize + size >= 1<<28)
2287                         PRVM_ERROR("PRVM_SetTempString: ran out of tempstring memory!  (refusing to grow tempstring buffer over 256MB, cursize %i, size %i)\n", vm_tempstringsbuf.cursize, size);
2288                 vm_tempstringsbuf.maxsize = max(vm_tempstringsbuf.maxsize, 65536);
2289                 while (vm_tempstringsbuf.maxsize < vm_tempstringsbuf.cursize + size)
2290                         vm_tempstringsbuf.maxsize *= 2;
2291                 if (vm_tempstringsbuf.maxsize != old.maxsize || vm_tempstringsbuf.data == NULL)
2292                 {
2293                         if (developer.integer >= 100)
2294                                 Con_Printf("PRVM_SetTempString: enlarging tempstrings buffer (%iKB -> %iKB)\n", old.maxsize/1024, vm_tempstringsbuf.maxsize/1024);
2295                         vm_tempstringsbuf.data = Mem_Alloc(sv_mempool, vm_tempstringsbuf.maxsize);
2296                         if (old.cursize)
2297                                 memcpy(vm_tempstringsbuf.data, old.data, old.cursize);
2298                         if (old.data)
2299                                 Mem_Free(old.data);
2300                 }
2301         }
2302         t = (char *)vm_tempstringsbuf.data + vm_tempstringsbuf.cursize;
2303         memcpy(t, s, size);
2304         vm_tempstringsbuf.cursize += size;
2305         return PRVM_SetEngineString(t);
2306 }
2307
2308 int PRVM_AllocString(size_t bufferlength, char **pointer)
2309 {
2310         int i;
2311         if (!bufferlength)
2312                 return 0;
2313         for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
2314                 if (!prog->knownstrings[i])
2315                         break;
2316         if (i >= prog->numknownstrings)
2317         {
2318                 if (i >= prog->maxknownstrings)
2319                 {
2320                         const char **oldstrings = prog->knownstrings;
2321                         const unsigned char *oldstrings_freeable = prog->knownstrings_freeable;
2322                         prog->maxknownstrings += 128;
2323                         prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
2324                         prog->knownstrings_freeable = (unsigned char *)PRVM_Alloc(prog->maxknownstrings * sizeof(unsigned char));
2325                         if (prog->numknownstrings)
2326                         {
2327                                 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
2328                                 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(unsigned char));
2329                         }
2330                 }
2331                 prog->numknownstrings++;
2332         }
2333         prog->firstfreeknownstring = i + 1;
2334         prog->knownstrings[i] = (char *)PRVM_Alloc(bufferlength);
2335         prog->knownstrings_freeable[i] = true;
2336         if (pointer)
2337                 *pointer = (char *)(prog->knownstrings[i]);
2338         return -1 - i;
2339 }
2340
2341 void PRVM_FreeString(int num)
2342 {
2343         if (num == 0)
2344                 PRVM_ERROR("PRVM_FreeString: attempt to free a NULL string");
2345         else if (num >= 0 && num < prog->stringssize)
2346                 PRVM_ERROR("PRVM_FreeString: attempt to free a constant string");
2347         else if (num < 0 && num >= -prog->numknownstrings)
2348         {
2349                 num = -1 - num;
2350                 if (!prog->knownstrings[num])
2351                         PRVM_ERROR("PRVM_FreeString: attempt to free a non-existent or already freed string");
2352                 if (!prog->knownstrings[num])
2353                         PRVM_ERROR("PRVM_FreeString: attempt to free a string owned by the engine");
2354                 PRVM_Free((char *)prog->knownstrings[num]);
2355                 prog->knownstrings[num] = NULL;
2356                 prog->knownstrings_freeable[num] = false;
2357                 prog->firstfreeknownstring = min(prog->firstfreeknownstring, num);
2358         }
2359         else
2360                 PRVM_ERROR("PRVM_FreeString: invalid string offset %i", num);
2361 }
2362