2 Copyright (C) 1996-1997 Id Software, Inc.
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.
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.
13 See the GNU General Public License for more details.
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.
27 static prvm_prog_t prog_list[PRVM_MAXPROGS];
29 int prvm_type_size[8] = {1,sizeof(string_t)/4,1,3,1,1,sizeof(func_t)/4,sizeof(void *)/4};
31 ddef_t *PRVM_ED_FieldAtOfs(int ofs);
32 qboolean PRVM_ED_ParseEpair(prvm_edict_t *ent, ddef_t *key, const char *s);
34 // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
35 cvar_t prvm_boundscheck = {0, "prvm_boundscheck", "1"};
36 // LordHavoc: prints every opcode as it executes - warning: this is significant spew
37 cvar_t prvm_traceqc = {0, "prvm_traceqc", "0"};
39 //============================================================================
47 void PRVM_MEM_Alloc(void)
51 // reserve space for the null entity aka world
52 // check bound of max_edicts
53 prog->max_edicts = bound(1 + prog->reserved_edicts, prog->max_edicts, prog->limit_edicts);
54 prog->num_edicts = bound(1 + prog->reserved_edicts, prog->num_edicts, prog->max_edicts);
56 // edictprivate_size has to be min as big prvm_edict_private_t
57 prog->edictprivate_size = max(prog->edictprivate_size,(int)sizeof(prvm_edict_private_t));
60 prog->edicts = (prvm_edict_t *)Mem_Alloc(prog->progs_mempool,prog->limit_edicts * sizeof(prvm_edict_t));
62 // alloc edict private space
63 prog->edictprivate = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edictprivate_size);
66 prog->edictsfields = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edict_size);
69 for(i = 0; i < prog->max_edicts; i++)
71 prog->edicts[i].priv.required = (prvm_edict_private_t *)((qbyte *)prog->edictprivate + i * prog->edictprivate_size);
72 prog->edicts[i].fields.vp = (void*)((qbyte *)prog->edictsfields + i * prog->edict_size);
78 PRVM_MEM_IncreaseEdicts
81 void PRVM_MEM_IncreaseEdicts(void)
84 int oldmaxedicts = prog->max_edicts;
85 void *oldedictsfields = prog->edictsfields;
86 void *oldedictprivate = prog->edictprivate;
88 if(prog->max_edicts >= prog->limit_edicts)
91 PRVM_GCALL(begin_increase_edicts)();
94 prog->max_edicts = min(prog->max_edicts + 256, prog->limit_edicts);
96 prog->edictsfields = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edict_size);
97 prog->edictprivate = Mem_Alloc(prog->progs_mempool, prog->max_edicts * prog->edictprivate_size);
99 memcpy(prog->edictsfields, oldedictsfields, oldmaxedicts * prog->edict_size);
100 memcpy(prog->edictprivate, oldedictprivate, oldmaxedicts * prog->edictprivate_size);
102 //set e and v pointers
103 for(i = 0; i < prog->max_edicts; i++)
105 prog->edicts[i].priv.required = (prvm_edict_private_t *)((qbyte *)prog->edictprivate + i * prog->edictprivate_size);
106 prog->edicts[i].fields.vp = (void*)((qbyte *)prog->edictsfields + i * prog->edict_size);
109 PRVM_GCALL(end_increase_edicts)();
111 Mem_Free(oldedictsfields);
112 Mem_Free(oldedictprivate);
115 //============================================================================
118 int PRVM_ED_FindFieldOffset(const char *field)
121 d = PRVM_ED_FindField(field);
127 qboolean PRVM_ProgLoaded(int prognr)
129 if(prognr < 0 || prognr >= PRVM_MAXPROGS)
132 return (prog_list[prognr].loaded ? TRUE : FALSE);
137 PRVM_SetProgFromString
140 // perhaps add a return value when the str doesnt exist
141 qboolean PRVM_SetProgFromString(const char *str)
144 for(; i < PRVM_MAXPROGS ; i++)
145 if(prog_list[i].name && !strcmp(prog_list[i].name,str))
147 if(prog_list[i].loaded)
149 prog = &prog_list[i];
154 Con_Printf("%s not loaded !\n",PRVM_NAME);
159 Con_Printf("Invalid program name %s !\n", str);
168 void PRVM_SetProg(int prognr)
170 if(0 <= prognr && prognr < PRVM_MAXPROGS)
172 if(prog_list[prognr].loaded)
173 prog = &prog_list[prognr];
175 PRVM_ERROR("%i not loaded !\n", prognr);
178 PRVM_ERROR("Invalid program number %i\n", prognr);
185 Sets everything to NULL
188 void PRVM_ED_ClearEdict (prvm_edict_t *e)
190 memset (e->fields.vp, 0, prog->progs->entityfields * 4);
191 e->priv.required->free = false;
193 // AK: Let the init_edict function determine if something needs to be initialized
194 PRVM_GCALL(init_edict)(e);
201 Either finds a free edict, or allocates a new one.
202 Try to avoid reusing an entity that was recently freed, because it
203 can cause the client to think the entity morphed into something else
204 instead of being removed and recreated, which can cause interpolated
205 angles and bad trails.
208 prvm_edict_t *PRVM_ED_Alloc (void)
213 // the client qc dont need maxclients
214 // thus it doesnt need to use svs.maxclients
215 // AK: changed i=svs.maxclients+1
216 // AK: changed so the edict 0 wont spawn -> used as reserved/world entity
217 // although the menu/client has no world
218 for (i = prog->reserved_edicts + 1;i < prog->num_edicts;i++)
220 e = PRVM_EDICT_NUM(i);
221 // the first couple seconds of server time can involve a lot of
222 // freeing and allocating, so relax the replacement policy
223 if (e->priv.required->free && ( e->priv.required->freetime < 2 || (*prog->time - e->priv.required->freetime) > 0.5 ) )
225 PRVM_ED_ClearEdict (e);
230 if (i == prog->limit_edicts)
231 PRVM_ERROR ("%s: PRVM_ED_Alloc: no free edicts",PRVM_NAME);
234 if (prog->num_edicts >= prog->max_edicts)
235 PRVM_MEM_IncreaseEdicts();
237 e = PRVM_EDICT_NUM(i);
238 PRVM_ED_ClearEdict (e);
247 Marks the edict as free
248 FIXME: walk all entities and NULL out references to this entity
251 void PRVM_ED_Free (prvm_edict_t *ed)
253 // dont delete the null entity (world) or reserved edicts
254 if(PRVM_NUM_FOR_EDICT(ed) <= prog->reserved_edicts )
257 PRVM_GCALL(free_edict)(ed);
259 ed->priv.required->free = true;
260 ed->priv.required->freetime = *prog->time;
263 //===========================================================================
270 ddef_t *PRVM_ED_GlobalAtOfs (int ofs)
275 for (i=0 ; i<prog->progs->numglobaldefs ; i++)
277 def = &prog->globaldefs[i];
289 ddef_t *PRVM_ED_FieldAtOfs (int ofs)
294 for (i=0 ; i<prog->progs->numfielddefs ; i++)
296 def = &prog->fielddefs[i];
308 ddef_t *PRVM_ED_FindField (const char *name)
313 for (i=0 ; i<prog->progs->numfielddefs ; i++)
315 def = &prog->fielddefs[i];
316 if (!strcmp(PRVM_GetString(def->s_name), name))
327 ddef_t *PRVM_ED_FindGlobal (const char *name)
332 for (i=0 ; i<prog->progs->numglobaldefs ; i++)
334 def = &prog->globaldefs[i];
335 if (!strcmp(PRVM_GetString(def->s_name), name))
347 mfunction_t *PRVM_ED_FindFunction (const char *name)
352 for (i=0 ; i<prog->progs->numfunctions ; i++)
354 func = &prog->functions[i];
355 if (!strcmp(PRVM_GetString(func->s_name), name))
366 Returns a string describing *data in a type specific manner
369 char *PRVM_ValueString (etype_t type, prvm_eval_t *val)
371 static char line[1024]; // LordHavoc: enlarged a bit (was 256)
376 type = (etype_t)((int) type & ~DEF_SAVEGLOBAL);
381 strlcpy (line, PRVM_GetString (val->string), sizeof (line));
385 if (n < 0 || n >= prog->limit_edicts)
386 sprintf (line, "entity %i (invalid!)", n);
388 sprintf (line, "entity %i", n);
391 f = prog->functions + val->function;
392 sprintf (line, "%s()", PRVM_GetString(f->s_name));
395 def = PRVM_ED_FieldAtOfs ( val->_int );
396 sprintf (line, ".%s", PRVM_GetString(def->s_name));
399 sprintf (line, "void");
402 // LordHavoc: changed from %5.1f to %10.4f
403 sprintf (line, "%10.4f", val->_float);
406 // LordHavoc: changed from %5.1f to %10.4f
407 sprintf (line, "'%10.4f %10.4f %10.4f'", val->vector[0], val->vector[1], val->vector[2]);
410 sprintf (line, "pointer");
413 sprintf (line, "bad type %i", type);
424 Returns a string describing *data in a type specific manner
425 Easier to parse than PR_ValueString
428 char *PRVM_UglyValueString (etype_t type, prvm_eval_t *val)
430 static char line[4096];
436 type = (etype_t)((int)type & ~DEF_SAVEGLOBAL);
441 // Parse the string a bit to turn special characters
442 // (like newline, specifically) into escape codes,
443 // this fixes saving games from various mods
444 s = PRVM_GetString (val->string);
445 for (i = 0;i < (int)sizeof(line) - 2 && *s;)
464 dpsnprintf (line, sizeof (line), "%i", PRVM_NUM_FOR_EDICT(PRVM_PROG_TO_EDICT(val->edict)));
467 f = prog->functions + val->function;
468 strlcpy (line, PRVM_GetString (f->s_name), sizeof (line));
471 def = PRVM_ED_FieldAtOfs ( val->_int );
472 dpsnprintf (line, sizeof (line), ".%s", PRVM_GetString(def->s_name));
475 dpsnprintf (line, sizeof (line), "void");
478 dpsnprintf (line, sizeof (line), "%f", val->_float);
481 dpsnprintf (line, sizeof (line), "%f %f %f", val->vector[0], val->vector[1], val->vector[2]);
484 dpsnprintf (line, sizeof (line), "bad type %i", type);
495 Returns a string with a description and the contents of a global,
496 padded to 20 field width
499 char *PRVM_GlobalString (int ofs)
505 static char line[128];
507 val = (void *)&prog->globals.generic[ofs];
508 def = PRVM_ED_GlobalAtOfs(ofs);
510 sprintf (line,"%i(?)", ofs);
513 s = PRVM_ValueString ((etype_t)def->type, (prvm_eval_t *)val);
514 sprintf (line,"%i(%s)%s", ofs, PRVM_GetString(def->s_name), s);
525 char *PRVM_GlobalStringNoContents (int ofs)
529 static char line[128];
531 def = PRVM_ED_GlobalAtOfs(ofs);
533 sprintf (line,"%i(?)", ofs);
535 sprintf (line,"%i(%s)", ofs, PRVM_GetString(def->s_name));
553 // LordHavoc: optimized this to print out much more quickly (tempstring)
554 // LordHavoc: changed to print out every 4096 characters (incase there are a lot of fields to print)
555 void PRVM_ED_Print(prvm_edict_t *ed)
563 char tempstring[8192], tempstring2[260]; // temporary string buffers
565 if (ed->priv.required->free)
567 Con_Printf("%s: FREE\n",PRVM_NAME);
572 sprintf(tempstring, "\n%s EDICT %i:\n", PRVM_NAME, PRVM_NUM_FOR_EDICT(ed));
573 for (i=1 ; i<prog->progs->numfielddefs ; i++)
575 d = &prog->fielddefs[i];
576 name = PRVM_GetString(d->s_name);
577 if (name[strlen(name)-2] == '_')
578 continue; // skip _x, _y, _z vars
580 v = (int *)((char *)ed->fields.vp + d->ofs*4);
582 // if the value is still all 0, skip the field
583 type = d->type & ~DEF_SAVEGLOBAL;
585 for (j=0 ; j<prvm_type_size[type] ; j++)
588 if (j == prvm_type_size[type])
591 if (strlen(name) > 256)
593 memcpy (tempstring2, name, 256);
594 tempstring2[256] = tempstring2[257] = tempstring2[258] = '.';
595 tempstring2[259] = 0;
598 strcat(tempstring, name);
599 for (l = strlen(name);l < 14;l++)
600 strcat(tempstring, " ");
601 strcat(tempstring, " ");
603 name = PRVM_ValueString((etype_t)d->type, (prvm_eval_t *)v);
604 if (strlen(name) > 256)
606 memcpy (tempstring2, name, 256);
607 tempstring2[256] = tempstring2[257] = tempstring2[258] = '.';
608 tempstring2[259] = 0;
611 strcat(tempstring, name);
612 strcat(tempstring, "\n");
613 if (strlen(tempstring) >= 4096)
615 Con_Print(tempstring);
620 Con_Print(tempstring);
630 void PRVM_ED_Write (qfile_t *f, prvm_edict_t *ed)
640 if (ed->priv.required->free)
646 for (i=1 ; i<prog->progs->numfielddefs ; i++)
648 d = &prog->fielddefs[i];
649 name = PRVM_GetString(d->s_name);
650 if (name[strlen(name)-2] == '_')
651 continue; // skip _x, _y, _z vars
653 v = (int *)((char *)ed->fields.vp + d->ofs*4);
655 // if the value is still all 0, skip the field
656 type = d->type & ~DEF_SAVEGLOBAL;
657 for (j=0 ; j<prvm_type_size[type] ; j++)
660 if (j == prvm_type_size[type])
663 FS_Printf(f,"\"%s\" ",name);
664 FS_Printf(f,"\"%s\"\n", PRVM_UglyValueString((etype_t)d->type, (prvm_eval_t *)v));
670 void PRVM_ED_PrintNum (int ent)
672 PRVM_ED_Print(PRVM_EDICT_NUM(ent));
677 PRVM_ED_PrintEdicts_f
679 For debugging, prints all the entities in the current server
682 void PRVM_ED_PrintEdicts_f (void)
688 Con_Print("prvm_edicts <program name>\n");
693 if(!PRVM_SetProgFromString(Cmd_Argv(1)))
696 Con_Printf("%s: %i entities\n", PRVM_NAME, prog->num_edicts);
697 for (i=0 ; i<prog->num_edicts ; i++)
698 PRVM_ED_PrintNum (i);
707 For debugging, prints a single edict
710 void PRVM_ED_PrintEdict_f (void)
716 Con_Print("prvm_edict <program name> <edict number>\n");
721 if(!PRVM_SetProgFromString(Cmd_Argv(1)))
724 i = atoi (Cmd_Argv(2));
725 if (i >= prog->num_edicts)
727 Con_Print("Bad edict number\n");
731 PRVM_ED_PrintNum (i);
743 // 2 possibilities : 1. just displaying the active edict count
744 // 2. making a function pointer [x]
745 void PRVM_ED_Count_f (void)
753 Con_Print("prvm_count <program name>\n");
758 if(!PRVM_SetProgFromString(Cmd_Argv(1)))
761 if(prog->count_edicts)
762 prog->count_edicts();
766 for (i=0 ; i<prog->num_edicts ; i++)
768 ent = PRVM_EDICT_NUM(i);
769 if (ent->priv.required->free)
774 Con_Printf("num_edicts:%3i\n", prog->num_edicts);
775 Con_Printf("active :%3i\n", active);
782 ==============================================================================
786 FIXME: need to tag constants, doesn't really work
787 ==============================================================================
795 void PRVM_ED_WriteGlobals (qfile_t *f)
803 for (i=0 ; i<prog->progs->numglobaldefs ; i++)
805 def = &prog->globaldefs[i];
807 if ( !(def->type & DEF_SAVEGLOBAL) )
809 type &= ~DEF_SAVEGLOBAL;
811 if (type != ev_string && type != ev_float && type != ev_entity)
814 name = PRVM_GetString(def->s_name);
815 FS_Printf(f,"\"%s\" ", name);
816 FS_Printf(f,"\"%s\"\n", PRVM_UglyValueString((etype_t)type, (prvm_eval_t *)&prog->globals.generic[def->ofs]));
826 void PRVM_ED_ParseGlobals (const char *data)
828 char keyname[1024]; // LordHavoc: good idea? bad idea? was 64
834 if (!COM_ParseToken(&data, false))
835 PRVM_ERROR ("PRVM_ED_ParseEntity: EOF without closing brace");
836 if (com_token[0] == '}')
839 strcpy (keyname, com_token);
842 if (!COM_ParseToken(&data, false))
843 PRVM_ERROR ("PRVM_ED_ParseEntity: EOF without closing brace");
845 if (com_token[0] == '}')
846 PRVM_ERROR ("PRVM_ED_ParseEntity: closing brace without data");
848 key = PRVM_ED_FindGlobal (keyname);
851 Con_DPrintf("'%s' is not a global on %s\n", keyname, PRVM_NAME);
855 if (!PRVM_ED_ParseEpair(NULL, key, com_token))
856 PRVM_ERROR ("PRVM_ED_ParseGlobals: parse error");
860 //============================================================================
867 Can parse either fields or globals
868 returns false if error
871 qboolean PRVM_ED_ParseEpair(prvm_edict_t *ent, ddef_t *key, const char *s)
880 val = (prvm_eval_t *)((int *)ent->fields.vp + key->ofs);
882 val = (prvm_eval_t *)((int *)prog->globals.generic + key->ofs);
883 switch (key->type & ~DEF_SAVEGLOBAL)
886 l = (int)strlen(s) + 1;
887 val->string = PRVM_AllocString(l, &new_p);
888 for (i = 0;i < l;i++)
890 if (s[i] == '\\' && i < l-1)
895 else if (s[i] == 'r')
906 while (*s && *s <= ' ')
908 val->_float = atof(s);
912 for (i = 0;i < 3;i++)
914 while (*s && *s <= ' ')
918 val->vector[i] = atof(s);
927 while (*s && *s <= ' ')
930 if (i >= prog->limit_edicts)
931 Con_Printf("PRVM_ED_ParseEpair: ev_entity reference too large (edict %u >= MAX_EDICTS %u) on %s\n", (unsigned int)i, (unsigned int)MAX_EDICTS, PRVM_NAME);
932 while (i >= prog->max_edicts)
933 PRVM_MEM_IncreaseEdicts();
934 //SV_IncreaseEdicts();
935 // if SV_IncreaseEdicts was called the base pointer needs to be updated
937 val = (prvm_eval_t *)((int *)ent->fields.vp + key->ofs);
938 val->edict = PRVM_EDICT_TO_PROG(PRVM_EDICT_NUM((int)i));
942 def = PRVM_ED_FindField(s);
945 Con_DPrintf("PRVM_ED_ParseEpair: Can't find field %s in %s\n", s, PRVM_NAME);
948 val->_int = def->ofs;
952 func = PRVM_ED_FindFunction(s);
955 Con_Printf("PRVM_ED_ParseEpair: Can't find function %s in %s\n", s, PRVM_NAME);
958 val->function = func - prog->functions;
962 Con_Printf("PRVM_ED_ParseEpair: Unknown key->type %i for key \"%s\" on %s\n", key->type, PRVM_GetString(key->s_name), PRVM_NAME);
972 Console command to set a field of a specified edict
975 void PRVM_ED_EdictSet_f(void)
982 Con_Print("prvm_edictset <program name> <edict number> <field> <value>\n");
987 if(!PRVM_SetProgFromString(Cmd_Argv(1)))
989 Con_Printf("Wrong program name %s !\n", Cmd_Argv(1));
993 ed = PRVM_EDICT_NUM(atoi(Cmd_Argv(2)));
995 if((key = PRVM_ED_FindField(Cmd_Argv(3))) == 0)
996 Con_Printf("Key %s not found !\n", Cmd_Argv(3));
998 PRVM_ED_ParseEpair(ed, key, Cmd_Argv(4));
1004 ====================
1007 Parses an edict out of the given string, returning the new position
1008 ed should be a properly initialized empty edict.
1009 Used for initial level load and for savegames.
1010 ====================
1012 const char *PRVM_ED_ParseEdict (const char *data, prvm_edict_t *ent)
1022 // go through all the dictionary pairs
1026 if (!COM_ParseToken(&data, false))
1027 PRVM_ERROR ("PRVM_ED_ParseEntity: EOF without closing brace");
1028 if (com_token[0] == '}')
1031 // anglehack is to allow QuakeEd to write single scalar angles
1032 // and allow them to be turned into vectors. (FIXME...)
1033 if (!strcmp(com_token, "angle"))
1035 strcpy (com_token, "angles");
1041 // FIXME: change light to _light to get rid of this hack
1042 if (!strcmp(com_token, "light"))
1043 strcpy (com_token, "light_lev"); // hack for single light def
1045 strcpy (keyname, com_token);
1047 // another hack to fix keynames with trailing spaces
1048 n = strlen(keyname);
1049 while (n && keyname[n-1] == ' ')
1056 if (!COM_ParseToken(&data, false))
1057 PRVM_ERROR ("PRVM_ED_ParseEntity: EOF without closing brace");
1059 if (com_token[0] == '}')
1060 PRVM_ERROR ("PRVM_ED_ParseEntity: closing brace without data");
1064 // ignore attempts to set key "" (this problem occurs in nehahra neh1m8.bsp)
1068 // keynames with a leading underscore are used for utility comments,
1069 // and are immediately discarded by quake
1070 if (keyname[0] == '_')
1073 key = PRVM_ED_FindField (keyname);
1076 Con_DPrintf("%s: '%s' is not a field\n", PRVM_NAME, keyname);
1083 strcpy (temp, com_token);
1084 sprintf (com_token, "0 %s 0", temp);
1087 if (!PRVM_ED_ParseEpair(ent, key, com_token))
1088 PRVM_ERROR ("PRVM_ED_ParseEdict: parse error");
1092 ent->priv.required->free = true;
1100 PRVM_ED_LoadFromFile
1102 The entities are directly placed in the array, rather than allocated with
1103 PRVM_ED_Alloc, because otherwise an error loading the map would have entity
1104 number references out of order.
1106 Creates a server's entity / program execution context by
1107 parsing textual entity definitions out of an ent file.
1109 Used for both fresh maps and savegame loads. A fresh map would also need
1110 to call PRVM_ED_CallSpawnFunctions () to let the objects initialize themselves.
1113 void PRVM_ED_LoadFromFile (const char *data)
1116 int parsed, inhibited, spawned, died;
1128 // parse the opening brace
1129 if (!COM_ParseToken(&data, false))
1131 if (com_token[0] != '{')
1132 PRVM_ERROR ("PRVM_ED_LoadFromFile: %s: found %s when expecting {", PRVM_NAME, com_token);
1134 // CHANGED: this is not conform to PR_LoadFromFile
1135 if(prog->loadintoworld)
1137 prog->loadintoworld = false;
1138 ent = PRVM_EDICT_NUM(0);
1141 ent = PRVM_ED_Alloc();
1144 if (ent != prog->edicts) // hack
1145 memset (ent->fields.vp, 0, prog->progs->entityfields * 4);
1147 data = PRVM_ED_ParseEdict (data, ent);
1150 // remove the entity ?
1151 if(prog->load_edict && !prog->load_edict(ent))
1159 // immediately call spawn function, but only if there is a self global and a classname
1161 if(prog->self && prog->flag & PRVM_FE_CLASSNAME)
1163 string_t handle = *(string_t*)&((qbyte*)ent->fields.vp)[PRVM_ED_FindFieldOffset("classname")];
1166 Con_Print("No classname for:\n");
1172 // look for the spawn function
1173 func = PRVM_ED_FindFunction (PRVM_GetString(handle));
1177 if (developer.integer) // don't confuse non-developers with errors
1179 Con_Print("No spawn function for:\n");
1187 PRVM_G_INT(prog->self->ofs) = PRVM_EDICT_TO_PROG(ent);
1188 PRVM_ExecuteProgram (func - prog->functions, "");
1192 if (ent->priv.required->free)
1196 Con_DPrintf("%s: %i new entities parsed, %i new inhibited, %i (%i new) spawned (whereas %i removed self, %i stayed)\n", PRVM_NAME, parsed, inhibited, prog->num_edicts, spawned, died, spawned - died);
1201 typedef struct dpfield_s
1208 #define DPFIELDS (sizeof(dpfields) / sizeof(dpfield_t))
1210 dpfield_t dpfields[] =
1221 void PRVM_ResetProg()
1223 PRVM_GCALL(reset_cmd)();
1224 Mem_FreePool(&prog->progs_mempool);
1225 memset(prog,0,sizeof(prvm_prog_t));
1233 void PRVM_LoadLNO( const char *progname ) {
1235 unsigned int *header;
1238 FS_StripExtension( progname, filename, sizeof( filename ) );
1239 strlcat( filename, ".lno", sizeof( filename ) );
1241 lno = FS_LoadFile( filename, tempmempool, false );
1247 <Spike> SafeWrite (h, &lnotype, sizeof(int));
1248 <Spike> SafeWrite (h, &version, sizeof(int));
1249 <Spike> SafeWrite (h, &numglobaldefs, sizeof(int));
1250 <Spike> SafeWrite (h, &numpr_globals, sizeof(int));
1251 <Spike> SafeWrite (h, &numfielddefs, sizeof(int));
1252 <Spike> SafeWrite (h, &numstatements, sizeof(int));
1253 <Spike> SafeWrite (h, statement_linenums, numstatements*sizeof(int));
1255 if( (unsigned) fs_filesize < (6 + prog->progs->numstatements) * sizeof( int ) ) {
1259 header = (unsigned int *) lno;
1260 if( header[ 0 ] == *(unsigned int *) "LNOF" &&
1261 LittleLong( header[ 1 ] ) == 1 &&
1262 (unsigned int)LittleLong( header[ 2 ] ) == (unsigned int)prog->progs->numglobaldefs &&
1263 (unsigned int)LittleLong( header[ 3 ] ) == (unsigned int)prog->progs->numglobals &&
1264 (unsigned int)LittleLong( header[ 4 ] ) == (unsigned int)prog->progs->numfielddefs &&
1265 (unsigned int)LittleLong( header[ 5 ] ) == (unsigned int)prog->progs->numstatements )
1267 prog->statement_linenums = (int *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof( int ) );
1268 memcpy( prog->statement_linenums, (int *) lno + 6, prog->progs->numstatements * sizeof( int ) );
1278 void PRVM_LoadProgs (const char * filename, int numrequiredfunc, char **required_func, int numrequiredfields, prvm_required_field_t *required_field)
1282 ddef_t *infielddefs;
1283 dfunction_t *dfunctions;
1285 if( prog->loaded ) {
1286 PRVM_ERROR ("PRVM_LoadProgs: there is already a %s program loaded!\n", PRVM_NAME );
1289 prog->progs = (dprograms_t *)FS_LoadFile (filename, prog->progs_mempool, false);
1290 if (prog->progs == NULL || fs_filesize < (fs_offset_t)sizeof(dprograms_t))
1291 PRVM_ERROR ("PRVM_LoadProgs: couldn't load %s for %s", filename, PRVM_NAME);
1293 Con_DPrintf("%s programs occupy %iK.\n", PRVM_NAME, fs_filesize/1024);
1295 prog->filecrc = CRC_Block((qbyte *)prog->progs, fs_filesize);
1297 // byte swap the header
1298 for (i = 0;i < (int) sizeof(*prog->progs) / 4;i++)
1299 ((int *)prog->progs)[i] = LittleLong ( ((int *)prog->progs)[i] );
1301 if (prog->progs->version != PROG_VERSION)
1302 PRVM_ERROR ("%s: %s has wrong version number (%i should be %i)", PRVM_NAME, filename, prog->progs->version, PROG_VERSION);
1303 if (prog->progs->crc != prog->headercrc)
1304 PRVM_ERROR ("%s: %s system vars have been modified, progdefs.h is out of date", PRVM_NAME, filename);
1306 //prog->functions = (dfunction_t *)((qbyte *)progs + progs->ofs_functions);
1307 dfunctions = (dfunction_t *)((qbyte *)prog->progs + prog->progs->ofs_functions);
1309 prog->strings = (char *)prog->progs + prog->progs->ofs_strings;
1310 prog->stringssize = 0;
1311 for (i = 0;i < prog->progs->numstrings;i++)
1313 if (prog->progs->ofs_strings + prog->stringssize >= (int)fs_filesize)
1314 PRVM_ERROR ("%s: %s strings go past end of file\n", PRVM_NAME, filename);
1315 prog->stringssize += (int)strlen (prog->strings + prog->stringssize) + 1;
1317 prog->numknownstrings = 0;
1318 prog->maxknownstrings = 0;
1319 prog->knownstrings = NULL;
1320 prog->knownstrings_freeable = NULL;
1322 prog->globaldefs = (ddef_t *)((qbyte *)prog->progs + prog->progs->ofs_globaldefs);
1324 // we need to expand the fielddefs list to include all the engine fields,
1325 // so allocate a new place for it
1326 infielddefs = (ddef_t *)((qbyte *)prog->progs + prog->progs->ofs_fielddefs);
1328 prog->fielddefs = (ddef_t *)Mem_Alloc(prog->progs_mempool, (prog->progs->numfielddefs + numrequiredfields) * sizeof(ddef_t));
1330 prog->statements = (dstatement_t *)((qbyte *)prog->progs + prog->progs->ofs_statements);
1332 // moved edict_size calculation down below field adding code
1334 //pr_global_struct = (globalvars_t *)((qbyte *)progs + progs->ofs_globals);
1335 prog->globals.generic = (float *)((qbyte *)prog->progs + prog->progs->ofs_globals);
1337 // byte swap the lumps
1338 for (i=0 ; i<prog->progs->numstatements ; i++)
1340 prog->statements[i].op = LittleShort(prog->statements[i].op);
1341 prog->statements[i].a = LittleShort(prog->statements[i].a);
1342 prog->statements[i].b = LittleShort(prog->statements[i].b);
1343 prog->statements[i].c = LittleShort(prog->statements[i].c);
1346 prog->functions = (mfunction_t *)Mem_Alloc(prog->progs_mempool, sizeof(mfunction_t) * prog->progs->numfunctions);
1347 for (i = 0;i < prog->progs->numfunctions;i++)
1349 prog->functions[i].first_statement = LittleLong (dfunctions[i].first_statement);
1350 prog->functions[i].parm_start = LittleLong (dfunctions[i].parm_start);
1351 prog->functions[i].s_name = LittleLong (dfunctions[i].s_name);
1352 prog->functions[i].s_file = LittleLong (dfunctions[i].s_file);
1353 prog->functions[i].numparms = LittleLong (dfunctions[i].numparms);
1354 prog->functions[i].locals = LittleLong (dfunctions[i].locals);
1355 memcpy(prog->functions[i].parm_size, dfunctions[i].parm_size, sizeof(dfunctions[i].parm_size));
1358 for (i=0 ; i<prog->progs->numglobaldefs ; i++)
1360 prog->globaldefs[i].type = LittleShort (prog->globaldefs[i].type);
1361 prog->globaldefs[i].ofs = LittleShort (prog->globaldefs[i].ofs);
1362 prog->globaldefs[i].s_name = LittleLong (prog->globaldefs[i].s_name);
1365 // copy the progs fields to the new fields list
1366 for (i = 0;i < prog->progs->numfielddefs;i++)
1368 prog->fielddefs[i].type = LittleShort (infielddefs[i].type);
1369 if (prog->fielddefs[i].type & DEF_SAVEGLOBAL)
1370 PRVM_ERROR ("PRVM_LoadProgs: prog->fielddefs[i].type & DEF_SAVEGLOBAL in %s", PRVM_NAME);
1371 prog->fielddefs[i].ofs = LittleShort (infielddefs[i].ofs);
1372 prog->fielddefs[i].s_name = LittleLong (infielddefs[i].s_name);
1375 // append the required fields
1376 for (i = 0;i < (int) numrequiredfields;i++)
1378 prog->fielddefs[prog->progs->numfielddefs].type = required_field[i].type;
1379 prog->fielddefs[prog->progs->numfielddefs].ofs = prog->progs->entityfields;
1380 prog->fielddefs[prog->progs->numfielddefs].s_name = PRVM_SetEngineString(required_field[i].name);
1381 if (prog->fielddefs[prog->progs->numfielddefs].type == ev_vector)
1382 prog->progs->entityfields += 3;
1384 prog->progs->entityfields++;
1385 prog->progs->numfielddefs++;
1388 // check required functions
1389 for(i=0 ; i < numrequiredfunc ; i++)
1390 if(PRVM_ED_FindFunction(required_func[i]) == 0)
1391 PRVM_ERROR("%s: %s not found in %s\n",PRVM_NAME, required_func[i], filename);
1393 for (i=0 ; i<prog->progs->numglobals ; i++)
1394 ((int *)prog->globals.generic)[i] = LittleLong (((int *)prog->globals.generic)[i]);
1396 // moved edict_size calculation down here, below field adding code
1397 // LordHavoc: this no longer includes the prvm_edict_t header
1398 prog->edict_size = prog->progs->entityfields * 4;
1399 prog->edictareasize = prog->edict_size * prog->limit_edicts;
1401 // LordHavoc: bounds check anything static
1402 for (i = 0,st = prog->statements;i < prog->progs->numstatements;i++,st++)
1408 if ((unsigned short) st->a >= prog->progs->numglobals || st->b + i < 0 || st->b + i >= prog->progs->numstatements)
1409 PRVM_ERROR("PRVM_LoadProgs: out of bounds IF/IFNOT (statement %d) in %s\n", i, PRVM_NAME);
1412 if (st->a + i < 0 || st->a + i >= prog->progs->numstatements)
1413 PRVM_ERROR("PRVM_LoadProgs: out of bounds GOTO (statement %d) in %s\n", i, PRVM_NAME);
1415 // global global global
1450 if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1451 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d)\n", i);
1453 // global none global
1459 if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1460 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s\n", i, PRVM_NAME);
1476 if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals)
1477 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d)\n in %s", i, PRVM_NAME);
1491 if ((unsigned short) st->a >= prog->progs->numglobals)
1492 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s\n", i, PRVM_NAME);
1495 PRVM_ERROR("PRVM_LoadProgs: unknown opcode %d at statement %d in %s\n", st->op, i, PRVM_NAME);
1500 PRVM_LoadLNO(filename);
1504 prog->loaded = TRUE;
1506 // set flags & ddef_ts in prog
1510 prog->self = PRVM_ED_FindGlobal("self");
1512 if( PRVM_ED_FindGlobal("time") && PRVM_ED_FindGlobal("time")->type & ev_float )
1513 prog->time = &PRVM_G_FLOAT(PRVM_ED_FindGlobal("time")->ofs);
1515 if(PRVM_ED_FindField ("chain"))
1516 prog->flag |= PRVM_FE_CHAIN;
1518 if(PRVM_ED_FindField ("classname"))
1519 prog->flag |= PRVM_FE_CLASSNAME;
1521 if(PRVM_ED_FindField ("nextthink") && PRVM_ED_FindField ("frame") && PRVM_ED_FindField ("think")
1522 && prog->flag && prog->self)
1523 prog->flag |= PRVM_OP_STATE;
1525 PRVM_GCALL(init_cmd)();
1532 void PRVM_Fields_f (void)
1534 int i, j, ednum, used, usedamount;
1536 char tempstring[5000], tempstring2[260];
1546 Con_Print("no progs loaded\n");
1553 Con_Print("prvm_fields <program name>\n");
1558 if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1561 counts = (int *)Mem_Alloc(tempmempool, prog->progs->numfielddefs * sizeof(int));
1562 for (ednum = 0;ednum < prog->max_edicts;ednum++)
1564 ed = PRVM_EDICT_NUM(ednum);
1565 if (ed->priv.required->free)
1567 for (i = 1;i < prog->progs->numfielddefs;i++)
1569 d = &prog->fielddefs[i];
1570 name = PRVM_GetString(d->s_name);
1571 if (name[strlen(name)-2] == '_')
1572 continue; // skip _x, _y, _z vars
1573 v = (int *)((char *)ed->fields.vp + d->ofs*4);
1574 // if the value is still all 0, skip the field
1575 for (j = 0;j < prvm_type_size[d->type & ~DEF_SAVEGLOBAL];j++)
1588 for (i = 0;i < prog->progs->numfielddefs;i++)
1590 d = &prog->fielddefs[i];
1591 name = PRVM_GetString(d->s_name);
1592 if (name[strlen(name)-2] == '_')
1593 continue; // skip _x, _y, _z vars
1594 switch(d->type & ~DEF_SAVEGLOBAL)
1597 strcat(tempstring, "string ");
1600 strcat(tempstring, "entity ");
1603 strcat(tempstring, "function ");
1606 strcat(tempstring, "field ");
1609 strcat(tempstring, "void ");
1612 strcat(tempstring, "float ");
1615 strcat(tempstring, "vector ");
1618 strcat(tempstring, "pointer ");
1621 sprintf (tempstring2, "bad type %i ", d->type & ~DEF_SAVEGLOBAL);
1622 strcat(tempstring, tempstring2);
1625 if (strlen(name) > 256)
1627 memcpy (tempstring2, name, 256);
1628 tempstring2[256] = tempstring2[257] = tempstring2[258] = '.';
1629 tempstring2[259] = 0;
1632 strcat(tempstring, name);
1633 for (j = (int)strlen(name);j < 25;j++)
1634 strcat(tempstring, " ");
1635 sprintf(tempstring2, "%5d", counts[i]);
1636 strcat(tempstring, tempstring2);
1637 strcat(tempstring, "\n");
1638 if (strlen(tempstring) >= 4096)
1640 Con_Print(tempstring);
1646 usedamount += prvm_type_size[d->type & ~DEF_SAVEGLOBAL];
1650 Con_Printf("%s: %i entity fields (%i in use), totalling %i bytes per edict (%i in use), %i edicts allocated, %i bytes total spent on edict fields (%i needed)\n", PRVM_NAME, prog->progs->entityfields, used, prog->progs->entityfields * 4, usedamount * 4, prog->max_edicts, prog->progs->entityfields * 4 * prog->max_edicts, usedamount * 4 * prog->max_edicts);
1655 void PRVM_Globals_f (void)
1661 Con_Print("no progs loaded\n");
1664 if(Cmd_Argc () != 2)
1666 Con_Print("prvm_globals <program name>\n");
1671 if(!PRVM_SetProgFromString (Cmd_Argv (1)))
1674 Con_Printf("%s :", PRVM_NAME);
1676 for (i = 0;i < prog->progs->numglobaldefs;i++)
1677 Con_Printf("%s\n", PRVM_GetString(prog->globaldefs[i].s_name));
1678 Con_Printf("%i global variables, totalling %i bytes\n", prog->progs->numglobals, prog->progs->numglobals * 4);
1688 void PRVM_Global_f(void)
1691 if( Cmd_Argc() != 3 ) {
1692 Con_Printf( "prvm_global <program name> <global name>\n" );
1697 if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1700 global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
1702 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
1704 Con_Printf( "%s: %s\n", Cmd_Argv(2), PRVM_ValueString( (etype_t)global->type, (prvm_eval_t *) &prog->globals.generic[ global->ofs ] ) );
1713 void PRVM_GlobalSet_f(void)
1716 if( Cmd_Argc() != 4 ) {
1717 Con_Printf( "prvm_globalset <program name> <global name> <value>\n" );
1722 if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1725 global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
1727 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
1729 PRVM_ED_ParseEpair( NULL, global, Cmd_Argv(3) );
1738 void PRVM_Init (void)
1740 Cmd_AddCommand ("prvm_edict", PRVM_ED_PrintEdict_f);
1741 Cmd_AddCommand ("prvm_edicts", PRVM_ED_PrintEdicts_f);
1742 Cmd_AddCommand ("prvm_edictcount", PRVM_ED_Count_f);
1743 Cmd_AddCommand ("prvm_profile", PRVM_Profile_f);
1744 Cmd_AddCommand ("prvm_fields", PRVM_Fields_f);
1745 Cmd_AddCommand ("prvm_globals", PRVM_Globals_f);
1746 Cmd_AddCommand ("prvm_global", PRVM_Global_f);
1747 Cmd_AddCommand ("prvm_globalset", PRVM_GlobalSet_f);
1748 Cmd_AddCommand ("prvm_edictset", PRVM_ED_EdictSet_f);
1749 // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
1750 Cvar_RegisterVariable (&prvm_boundscheck);
1751 Cvar_RegisterVariable (&prvm_traceqc);
1761 void PRVM_InitProg(int prognr)
1763 if(prognr < 0 || prognr >= PRVM_MAXPROGS)
1764 Sys_Error("PRVM_InitProg: Invalid program number %i\n",prognr);
1766 prog = &prog_list[prognr];
1771 memset(prog, 0, sizeof(prvm_prog_t));
1773 prog->time = &prog->_time;
1774 prog->error_cmd = Host_Error;
1777 int PRVM_GetProgNr()
1779 return prog - prog_list;
1782 void *_PRVM_Alloc(size_t buffersize, const char *filename, int fileline)
1784 return _Mem_Alloc(prog->progs_mempool, buffersize, filename, fileline);
1787 void _PRVM_Free(void *buffer, const char *filename, int fileline)
1789 _Mem_Free(buffer, filename, fileline);
1792 void _PRVM_FreeAll(const char *filename, int fileline)
1795 prog->fielddefs = NULL;
1796 prog->functions = NULL;
1797 _Mem_EmptyPool(prog->progs_mempool, filename, fileline);
1800 // LordHavoc: turned PRVM_EDICT_NUM into a #define for speed reasons
1801 prvm_edict_t *PRVM_EDICT_NUM_ERROR(int n, char *filename, int fileline)
1803 PRVM_ERROR ("PRVM_EDICT_NUM: %s: bad number %i (called at %s:%i)", PRVM_NAME, n, filename, fileline);
1808 int NUM_FOR_EDICT_ERROR(prvm_edict_t *e)
1810 PRVM_ERROR ("PRVM_NUM_FOR_EDICT: bad pointer %p (world is %p, entity number would be %i)", e, prog->edicts, e - prog->edicts);
1814 int PRVM_NUM_FOR_EDICT(prvm_edict_t *e)
1817 n = e - prog->edicts;
1818 if ((unsigned int)n >= prog->limit_edicts)
1819 Host_Error ("PRVM_NUM_FOR_EDICT: bad pointer");
1823 //int NoCrash_NUM_FOR_EDICT(prvm_edict_t *e)
1825 // return e - prog->edicts;
1828 //#define PRVM_EDICT_TO_PROG(e) ((qbyte *)(((prvm_edict_t *)e)->v) - (qbyte *)(prog->edictsfields))
1829 //#define PRVM_PROG_TO_EDICT(e) (prog->edicts + ((e) / (progs->entityfields * 4)))
1830 int PRVM_EDICT_TO_PROG(prvm_edict_t *e)
1833 n = e - prog->edicts;
1834 if ((unsigned int)n >= (unsigned int)prog->max_edicts)
1835 Host_Error("PRVM_EDICT_TO_PROG: invalid edict %8p (number %i compared to world at %8p)\n", e, n, prog->edicts);
1836 return n;// EXPERIMENTAL
1837 //return (qbyte *)e->v - (qbyte *)prog->edictsfields;
1839 prvm_edict_t *PRVM_PROG_TO_EDICT(int n)
1841 if ((unsigned int)n >= (unsigned int)prog->max_edicts)
1842 Host_Error("PRVM_PROG_TO_EDICT: invalid edict number %i\n", n);
1843 return prog->edicts + n; // EXPERIMENTAL
1844 //return prog->edicts + ((n) / (progs->entityfields * 4));
1849 const char *PRVM_GetString(int num)
1851 if (num >= 0 && num < prog->stringssize)
1852 return prog->strings + num;
1853 else if (num < 0 && num >= -prog->numknownstrings)
1856 if (!prog->knownstrings[num])
1857 PRVM_ERROR("PRVM_GetString: attempt to get string that is already freed\n");
1858 return prog->knownstrings[num];
1862 PRVM_ERROR("PRVM_GetString: invalid string offset %i\n", num);
1867 int PRVM_SetEngineString(const char *s)
1872 if (s >= prog->strings && s <= prog->strings + prog->stringssize)
1873 PRVM_ERROR("PRVM_SetEngineString: s in prog->strings area\n");
1874 for (i = 0;i < prog->numknownstrings;i++)
1875 if (prog->knownstrings[i] == s)
1877 // new unknown engine string
1878 if (developer.integer >= 3)
1879 Con_Printf("new engine string %p\n", s);
1880 for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
1881 if (!prog->knownstrings[i])
1883 if (i >= prog->numknownstrings)
1885 if (i >= prog->maxknownstrings)
1887 const char **oldstrings = prog->knownstrings;
1888 const qbyte *oldstrings_freeable = prog->knownstrings_freeable;
1889 prog->maxknownstrings += 128;
1890 prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
1891 prog->knownstrings_freeable = (qbyte *)PRVM_Alloc(prog->maxknownstrings * sizeof(qbyte));
1892 if (prog->numknownstrings)
1894 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
1895 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(qbyte));
1898 prog->numknownstrings++;
1900 prog->firstfreeknownstring = i + 1;
1901 prog->knownstrings[i] = s;
1905 int PRVM_AllocString(size_t bufferlength, char **pointer)
1910 for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
1911 if (!prog->knownstrings[i])
1913 if (i >= prog->numknownstrings)
1915 if (i >= prog->maxknownstrings)
1917 const char **oldstrings = prog->knownstrings;
1918 const qbyte *oldstrings_freeable = prog->knownstrings_freeable;
1919 prog->maxknownstrings += 128;
1920 prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
1921 prog->knownstrings_freeable = (qbyte *)PRVM_Alloc(prog->maxknownstrings * sizeof(qbyte));
1922 if (prog->numknownstrings)
1924 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
1925 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(qbyte));
1928 prog->numknownstrings++;
1930 prog->firstfreeknownstring = i + 1;
1931 prog->knownstrings[i] = (char *)PRVM_Alloc(bufferlength);
1932 prog->knownstrings_freeable[i] = true;
1934 *pointer = (char *)(prog->knownstrings[i]);
1938 void PRVM_FreeString(int num)
1941 PRVM_ERROR("PRVM_FreeString: attempt to free a NULL string\n");
1942 else if (num >= 0 && num < prog->stringssize)
1943 PRVM_ERROR("PRVM_FreeString: attempt to free a constant string\n");
1944 else if (num < 0 && num >= -prog->numknownstrings)
1947 if (!prog->knownstrings[num])
1948 PRVM_ERROR("PRVM_FreeString: attempt to free a non-existent or already freed string\n");
1949 if (!prog->knownstrings[num])
1950 PRVM_ERROR("PRVM_FreeString: attempt to free a string owned by the engine\n");
1951 PRVM_Free((char *)prog->knownstrings[num]);
1952 prog->knownstrings[num] = NULL;
1953 prog->knownstrings_freeable[num] = false;
1954 prog->firstfreeknownstring = min(prog->firstfreeknownstring, num);
1957 PRVM_ERROR("PRVM_FreeString: invalid string offset %i\n", num);