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 *)((unsigned char *)prog->edictprivate + i * prog->edictprivate_size);
72 prog->edicts[i].fields.vp = (void*)((unsigned char *)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 *)((unsigned char *)prog->edictprivate + i * prog->edictprivate_size);
106 prog->edicts[i].fields.vp = (void*)((unsigned char *)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 !", prognr);
178 PRVM_ERROR("Invalid program number %i", 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*)&((unsigned char*)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 ) {
1234 fs_offset_t filesize;
1236 unsigned int *header;
1239 FS_StripExtension( progname, filename, sizeof( filename ) );
1240 strlcat( filename, ".lno", sizeof( filename ) );
1242 lno = FS_LoadFile( filename, tempmempool, false, &filesize );
1248 <Spike> SafeWrite (h, &lnotype, sizeof(int));
1249 <Spike> SafeWrite (h, &version, sizeof(int));
1250 <Spike> SafeWrite (h, &numglobaldefs, sizeof(int));
1251 <Spike> SafeWrite (h, &numpr_globals, sizeof(int));
1252 <Spike> SafeWrite (h, &numfielddefs, sizeof(int));
1253 <Spike> SafeWrite (h, &numstatements, sizeof(int));
1254 <Spike> SafeWrite (h, statement_linenums, numstatements*sizeof(int));
1256 if( (unsigned) filesize < (6 + prog->progs->numstatements) * sizeof( int ) ) {
1260 header = (unsigned int *) lno;
1261 if( header[ 0 ] == *(unsigned int *) "LNOF" &&
1262 LittleLong( header[ 1 ] ) == 1 &&
1263 (unsigned int)LittleLong( header[ 2 ] ) == (unsigned int)prog->progs->numglobaldefs &&
1264 (unsigned int)LittleLong( header[ 3 ] ) == (unsigned int)prog->progs->numglobals &&
1265 (unsigned int)LittleLong( header[ 4 ] ) == (unsigned int)prog->progs->numfielddefs &&
1266 (unsigned int)LittleLong( header[ 5 ] ) == (unsigned int)prog->progs->numstatements )
1268 prog->statement_linenums = (int *)Mem_Alloc(prog->progs_mempool, prog->progs->numstatements * sizeof( int ) );
1269 memcpy( prog->statement_linenums, (int *) lno + 6, prog->progs->numstatements * sizeof( int ) );
1279 void PRVM_LoadProgs (const char * filename, int numrequiredfunc, char **required_func, int numrequiredfields, prvm_required_field_t *required_field)
1283 ddef_t *infielddefs;
1284 dfunction_t *dfunctions;
1285 fs_offset_t filesize;
1287 if( prog->loaded ) {
1288 PRVM_ERROR ("PRVM_LoadProgs: there is already a %s program loaded!", PRVM_NAME );
1291 prog->progs = (dprograms_t *)FS_LoadFile (filename, prog->progs_mempool, false, &filesize);
1292 if (prog->progs == NULL || filesize < (fs_offset_t)sizeof(dprograms_t))
1293 PRVM_ERROR ("PRVM_LoadProgs: couldn't load %s for %s", filename, PRVM_NAME);
1295 Con_DPrintf("%s programs occupy %iK.\n", PRVM_NAME, filesize/1024);
1297 prog->filecrc = CRC_Block((unsigned char *)prog->progs, filesize);
1299 // byte swap the header
1300 for (i = 0;i < (int) sizeof(*prog->progs) / 4;i++)
1301 ((int *)prog->progs)[i] = LittleLong ( ((int *)prog->progs)[i] );
1303 if (prog->progs->version != PROG_VERSION)
1304 PRVM_ERROR ("%s: %s has wrong version number (%i should be %i)", PRVM_NAME, filename, prog->progs->version, PROG_VERSION);
1305 if (prog->progs->crc != prog->headercrc)
1306 PRVM_ERROR ("%s: %s system vars have been modified, progdefs.h is out of date", PRVM_NAME, filename);
1308 //prog->functions = (dfunction_t *)((unsigned char *)progs + progs->ofs_functions);
1309 dfunctions = (dfunction_t *)((unsigned char *)prog->progs + prog->progs->ofs_functions);
1311 prog->strings = (char *)prog->progs + prog->progs->ofs_strings;
1312 prog->stringssize = 0;
1313 for (i = 0;i < prog->progs->numstrings;i++)
1315 if (prog->progs->ofs_strings + prog->stringssize >= (int)filesize)
1316 PRVM_ERROR ("%s: %s strings go past end of file", PRVM_NAME, filename);
1317 prog->stringssize += (int)strlen (prog->strings + prog->stringssize) + 1;
1319 prog->numknownstrings = 0;
1320 prog->maxknownstrings = 0;
1321 prog->knownstrings = NULL;
1322 prog->knownstrings_freeable = NULL;
1324 prog->globaldefs = (ddef_t *)((unsigned char *)prog->progs + prog->progs->ofs_globaldefs);
1326 // we need to expand the fielddefs list to include all the engine fields,
1327 // so allocate a new place for it
1328 infielddefs = (ddef_t *)((unsigned char *)prog->progs + prog->progs->ofs_fielddefs);
1330 prog->fielddefs = (ddef_t *)Mem_Alloc(prog->progs_mempool, (prog->progs->numfielddefs + numrequiredfields) * sizeof(ddef_t));
1332 prog->statements = (dstatement_t *)((unsigned char *)prog->progs + prog->progs->ofs_statements);
1334 // moved edict_size calculation down below field adding code
1336 //pr_global_struct = (globalvars_t *)((unsigned char *)progs + progs->ofs_globals);
1337 prog->globals.generic = (float *)((unsigned char *)prog->progs + prog->progs->ofs_globals);
1339 // byte swap the lumps
1340 for (i=0 ; i<prog->progs->numstatements ; i++)
1342 prog->statements[i].op = LittleShort(prog->statements[i].op);
1343 prog->statements[i].a = LittleShort(prog->statements[i].a);
1344 prog->statements[i].b = LittleShort(prog->statements[i].b);
1345 prog->statements[i].c = LittleShort(prog->statements[i].c);
1348 prog->functions = (mfunction_t *)Mem_Alloc(prog->progs_mempool, sizeof(mfunction_t) * prog->progs->numfunctions);
1349 for (i = 0;i < prog->progs->numfunctions;i++)
1351 prog->functions[i].first_statement = LittleLong (dfunctions[i].first_statement);
1352 prog->functions[i].parm_start = LittleLong (dfunctions[i].parm_start);
1353 prog->functions[i].s_name = LittleLong (dfunctions[i].s_name);
1354 prog->functions[i].s_file = LittleLong (dfunctions[i].s_file);
1355 prog->functions[i].numparms = LittleLong (dfunctions[i].numparms);
1356 prog->functions[i].locals = LittleLong (dfunctions[i].locals);
1357 memcpy(prog->functions[i].parm_size, dfunctions[i].parm_size, sizeof(dfunctions[i].parm_size));
1360 for (i=0 ; i<prog->progs->numglobaldefs ; i++)
1362 prog->globaldefs[i].type = LittleShort (prog->globaldefs[i].type);
1363 prog->globaldefs[i].ofs = LittleShort (prog->globaldefs[i].ofs);
1364 prog->globaldefs[i].s_name = LittleLong (prog->globaldefs[i].s_name);
1367 // copy the progs fields to the new fields list
1368 for (i = 0;i < prog->progs->numfielddefs;i++)
1370 prog->fielddefs[i].type = LittleShort (infielddefs[i].type);
1371 if (prog->fielddefs[i].type & DEF_SAVEGLOBAL)
1372 PRVM_ERROR ("PRVM_LoadProgs: prog->fielddefs[i].type & DEF_SAVEGLOBAL in %s", PRVM_NAME);
1373 prog->fielddefs[i].ofs = LittleShort (infielddefs[i].ofs);
1374 prog->fielddefs[i].s_name = LittleLong (infielddefs[i].s_name);
1377 // append the required fields
1378 for (i = 0;i < (int) numrequiredfields;i++)
1380 prog->fielddefs[prog->progs->numfielddefs].type = required_field[i].type;
1381 prog->fielddefs[prog->progs->numfielddefs].ofs = prog->progs->entityfields;
1382 prog->fielddefs[prog->progs->numfielddefs].s_name = PRVM_SetEngineString(required_field[i].name);
1383 if (prog->fielddefs[prog->progs->numfielddefs].type == ev_vector)
1384 prog->progs->entityfields += 3;
1386 prog->progs->entityfields++;
1387 prog->progs->numfielddefs++;
1390 // check required functions
1391 for(i=0 ; i < numrequiredfunc ; i++)
1392 if(PRVM_ED_FindFunction(required_func[i]) == 0)
1393 PRVM_ERROR("%s: %s not found in %s",PRVM_NAME, required_func[i], filename);
1395 for (i=0 ; i<prog->progs->numglobals ; i++)
1396 ((int *)prog->globals.generic)[i] = LittleLong (((int *)prog->globals.generic)[i]);
1398 // moved edict_size calculation down here, below field adding code
1399 // LordHavoc: this no longer includes the prvm_edict_t header
1400 prog->edict_size = prog->progs->entityfields * 4;
1401 prog->edictareasize = prog->edict_size * prog->limit_edicts;
1403 // LordHavoc: bounds check anything static
1404 for (i = 0,st = prog->statements;i < prog->progs->numstatements;i++,st++)
1410 if ((unsigned short) st->a >= prog->progs->numglobals || st->b + i < 0 || st->b + i >= prog->progs->numstatements)
1411 PRVM_ERROR("PRVM_LoadProgs: out of bounds IF/IFNOT (statement %d) in %s", i, PRVM_NAME);
1414 if (st->a + i < 0 || st->a + i >= prog->progs->numstatements)
1415 PRVM_ERROR("PRVM_LoadProgs: out of bounds GOTO (statement %d) in %s", i, PRVM_NAME);
1417 // global global global
1452 if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1453 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d)", i);
1455 // global none global
1461 if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->c >= prog->progs->numglobals)
1462 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1478 if ((unsigned short) st->a >= prog->progs->numglobals || (unsigned short) st->b >= prog->progs->numglobals)
1479 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1493 if ((unsigned short) st->a >= prog->progs->numglobals)
1494 PRVM_ERROR("PRVM_LoadProgs: out of bounds global index (statement %d) in %s", i, PRVM_NAME);
1497 PRVM_ERROR("PRVM_LoadProgs: unknown opcode %d at statement %d in %s", st->op, i, PRVM_NAME);
1502 PRVM_LoadLNO(filename);
1506 prog->loaded = TRUE;
1508 // set flags & ddef_ts in prog
1512 prog->self = PRVM_ED_FindGlobal("self");
1514 if( PRVM_ED_FindGlobal("time") && PRVM_ED_FindGlobal("time")->type & ev_float )
1515 prog->time = &PRVM_G_FLOAT(PRVM_ED_FindGlobal("time")->ofs);
1517 if(PRVM_ED_FindField ("chain"))
1518 prog->flag |= PRVM_FE_CHAIN;
1520 if(PRVM_ED_FindField ("classname"))
1521 prog->flag |= PRVM_FE_CLASSNAME;
1523 if(PRVM_ED_FindField ("nextthink") && PRVM_ED_FindField ("frame") && PRVM_ED_FindField ("think")
1524 && prog->flag && prog->self)
1525 prog->flag |= PRVM_OP_STATE;
1527 PRVM_GCALL(init_cmd)();
1534 void PRVM_Fields_f (void)
1536 int i, j, ednum, used, usedamount;
1538 char tempstring[5000], tempstring2[260];
1548 Con_Print("no progs loaded\n");
1555 Con_Print("prvm_fields <program name>\n");
1560 if(!PRVM_SetProgFromString(Cmd_Argv(1)))
1563 counts = (int *)Mem_Alloc(tempmempool, prog->progs->numfielddefs * sizeof(int));
1564 for (ednum = 0;ednum < prog->max_edicts;ednum++)
1566 ed = PRVM_EDICT_NUM(ednum);
1567 if (ed->priv.required->free)
1569 for (i = 1;i < prog->progs->numfielddefs;i++)
1571 d = &prog->fielddefs[i];
1572 name = PRVM_GetString(d->s_name);
1573 if (name[strlen(name)-2] == '_')
1574 continue; // skip _x, _y, _z vars
1575 v = (int *)((char *)ed->fields.vp + d->ofs*4);
1576 // if the value is still all 0, skip the field
1577 for (j = 0;j < prvm_type_size[d->type & ~DEF_SAVEGLOBAL];j++)
1590 for (i = 0;i < prog->progs->numfielddefs;i++)
1592 d = &prog->fielddefs[i];
1593 name = PRVM_GetString(d->s_name);
1594 if (name[strlen(name)-2] == '_')
1595 continue; // skip _x, _y, _z vars
1596 switch(d->type & ~DEF_SAVEGLOBAL)
1599 strcat(tempstring, "string ");
1602 strcat(tempstring, "entity ");
1605 strcat(tempstring, "function ");
1608 strcat(tempstring, "field ");
1611 strcat(tempstring, "void ");
1614 strcat(tempstring, "float ");
1617 strcat(tempstring, "vector ");
1620 strcat(tempstring, "pointer ");
1623 sprintf (tempstring2, "bad type %i ", d->type & ~DEF_SAVEGLOBAL);
1624 strcat(tempstring, tempstring2);
1627 if (strlen(name) > 256)
1629 memcpy (tempstring2, name, 256);
1630 tempstring2[256] = tempstring2[257] = tempstring2[258] = '.';
1631 tempstring2[259] = 0;
1634 strcat(tempstring, name);
1635 for (j = (int)strlen(name);j < 25;j++)
1636 strcat(tempstring, " ");
1637 sprintf(tempstring2, "%5d", counts[i]);
1638 strcat(tempstring, tempstring2);
1639 strcat(tempstring, "\n");
1640 if (strlen(tempstring) >= 4096)
1642 Con_Print(tempstring);
1648 usedamount += prvm_type_size[d->type & ~DEF_SAVEGLOBAL];
1652 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);
1657 void PRVM_Globals_f (void)
1663 Con_Print("no progs loaded\n");
1666 if(Cmd_Argc () != 2)
1668 Con_Print("prvm_globals <program name>\n");
1673 if(!PRVM_SetProgFromString (Cmd_Argv (1)))
1676 Con_Printf("%s :", PRVM_NAME);
1678 for (i = 0;i < prog->progs->numglobaldefs;i++)
1679 Con_Printf("%s\n", PRVM_GetString(prog->globaldefs[i].s_name));
1680 Con_Printf("%i global variables, totalling %i bytes\n", prog->progs->numglobals, prog->progs->numglobals * 4);
1690 void PRVM_Global_f(void)
1693 if( Cmd_Argc() != 3 ) {
1694 Con_Printf( "prvm_global <program name> <global name>\n" );
1699 if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1702 global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
1704 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
1706 Con_Printf( "%s: %s\n", Cmd_Argv(2), PRVM_ValueString( (etype_t)global->type, (prvm_eval_t *) &prog->globals.generic[ global->ofs ] ) );
1715 void PRVM_GlobalSet_f(void)
1718 if( Cmd_Argc() != 4 ) {
1719 Con_Printf( "prvm_globalset <program name> <global name> <value>\n" );
1724 if( !PRVM_SetProgFromString( Cmd_Argv(1) ) )
1727 global = PRVM_ED_FindGlobal( Cmd_Argv(2) );
1729 Con_Printf( "No global '%s' in %s!\n", Cmd_Argv(2), Cmd_Argv(1) );
1731 PRVM_ED_ParseEpair( NULL, global, Cmd_Argv(3) );
1740 void PRVM_Init (void)
1742 Cmd_AddCommand ("prvm_edict", PRVM_ED_PrintEdict_f);
1743 Cmd_AddCommand ("prvm_edicts", PRVM_ED_PrintEdicts_f);
1744 Cmd_AddCommand ("prvm_edictcount", PRVM_ED_Count_f);
1745 Cmd_AddCommand ("prvm_profile", PRVM_Profile_f);
1746 Cmd_AddCommand ("prvm_fields", PRVM_Fields_f);
1747 Cmd_AddCommand ("prvm_globals", PRVM_Globals_f);
1748 Cmd_AddCommand ("prvm_global", PRVM_Global_f);
1749 Cmd_AddCommand ("prvm_globalset", PRVM_GlobalSet_f);
1750 Cmd_AddCommand ("prvm_edictset", PRVM_ED_EdictSet_f);
1751 // LordHavoc: optional runtime bounds checking (speed drain, but worth it for security, on by default - breaks most QCCX features (used by CRMod and others))
1752 Cvar_RegisterVariable (&prvm_boundscheck);
1753 Cvar_RegisterVariable (&prvm_traceqc);
1763 void PRVM_InitProg(int prognr)
1765 if(prognr < 0 || prognr >= PRVM_MAXPROGS)
1766 Sys_Error("PRVM_InitProg: Invalid program number %i",prognr);
1768 prog = &prog_list[prognr];
1773 memset(prog, 0, sizeof(prvm_prog_t));
1775 prog->time = &prog->_time;
1776 prog->error_cmd = Host_Error;
1779 int PRVM_GetProgNr()
1781 return prog - prog_list;
1784 void *_PRVM_Alloc(size_t buffersize, const char *filename, int fileline)
1786 return _Mem_Alloc(prog->progs_mempool, buffersize, filename, fileline);
1789 void _PRVM_Free(void *buffer, const char *filename, int fileline)
1791 _Mem_Free(buffer, filename, fileline);
1794 void _PRVM_FreeAll(const char *filename, int fileline)
1797 prog->fielddefs = NULL;
1798 prog->functions = NULL;
1799 _Mem_EmptyPool(prog->progs_mempool, filename, fileline);
1802 // LordHavoc: turned PRVM_EDICT_NUM into a #define for speed reasons
1803 prvm_edict_t *PRVM_EDICT_NUM_ERROR(int n, char *filename, int fileline)
1805 PRVM_ERROR ("PRVM_EDICT_NUM: %s: bad number %i (called at %s:%i)", PRVM_NAME, n, filename, fileline);
1810 int NUM_FOR_EDICT_ERROR(prvm_edict_t *e)
1812 PRVM_ERROR ("PRVM_NUM_FOR_EDICT: bad pointer %p (world is %p, entity number would be %i)", e, prog->edicts, e - prog->edicts);
1816 int PRVM_NUM_FOR_EDICT(prvm_edict_t *e)
1819 n = e - prog->edicts;
1820 if ((unsigned int)n >= prog->limit_edicts)
1821 Host_Error ("PRVM_NUM_FOR_EDICT: bad pointer");
1825 //int NoCrash_NUM_FOR_EDICT(prvm_edict_t *e)
1827 // return e - prog->edicts;
1830 //#define PRVM_EDICT_TO_PROG(e) ((unsigned char *)(((prvm_edict_t *)e)->v) - (unsigned char *)(prog->edictsfields))
1831 //#define PRVM_PROG_TO_EDICT(e) (prog->edicts + ((e) / (progs->entityfields * 4)))
1832 int PRVM_EDICT_TO_PROG(prvm_edict_t *e)
1835 n = e - prog->edicts;
1836 if ((unsigned int)n >= (unsigned int)prog->max_edicts)
1837 Host_Error("PRVM_EDICT_TO_PROG: invalid edict %8p (number %i compared to world at %8p)", e, n, prog->edicts);
1838 return n;// EXPERIMENTAL
1839 //return (unsigned char *)e->v - (unsigned char *)prog->edictsfields;
1841 prvm_edict_t *PRVM_PROG_TO_EDICT(int n)
1843 if ((unsigned int)n >= (unsigned int)prog->max_edicts)
1844 Host_Error("PRVM_PROG_TO_EDICT: invalid edict number %i", n);
1845 return prog->edicts + n; // EXPERIMENTAL
1846 //return prog->edicts + ((n) / (progs->entityfields * 4));
1851 const char *PRVM_GetString(int num)
1853 if (num >= 0 && num < prog->stringssize)
1854 return prog->strings + num;
1855 else if (num < 0 && num >= -prog->numknownstrings)
1858 if (!prog->knownstrings[num])
1859 PRVM_ERROR("PRVM_GetString: attempt to get string that is already freed");
1860 return prog->knownstrings[num];
1864 PRVM_ERROR("PRVM_GetString: invalid string offset %i", num);
1869 int PRVM_SetEngineString(const char *s)
1874 if (s >= prog->strings && s <= prog->strings + prog->stringssize)
1875 PRVM_ERROR("PRVM_SetEngineString: s in prog->strings area");
1876 for (i = 0;i < prog->numknownstrings;i++)
1877 if (prog->knownstrings[i] == s)
1879 // new unknown engine string
1880 if (developer.integer >= 3)
1881 Con_Printf("new engine string %p\n", s);
1882 for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
1883 if (!prog->knownstrings[i])
1885 if (i >= prog->numknownstrings)
1887 if (i >= prog->maxknownstrings)
1889 const char **oldstrings = prog->knownstrings;
1890 const unsigned char *oldstrings_freeable = prog->knownstrings_freeable;
1891 prog->maxknownstrings += 128;
1892 prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
1893 prog->knownstrings_freeable = (unsigned char *)PRVM_Alloc(prog->maxknownstrings * sizeof(unsigned char));
1894 if (prog->numknownstrings)
1896 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
1897 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(unsigned char));
1900 prog->numknownstrings++;
1902 prog->firstfreeknownstring = i + 1;
1903 prog->knownstrings[i] = s;
1907 int PRVM_AllocString(size_t bufferlength, char **pointer)
1912 for (i = prog->firstfreeknownstring;i < prog->numknownstrings;i++)
1913 if (!prog->knownstrings[i])
1915 if (i >= prog->numknownstrings)
1917 if (i >= prog->maxknownstrings)
1919 const char **oldstrings = prog->knownstrings;
1920 const unsigned char *oldstrings_freeable = prog->knownstrings_freeable;
1921 prog->maxknownstrings += 128;
1922 prog->knownstrings = (const char **)PRVM_Alloc(prog->maxknownstrings * sizeof(char *));
1923 prog->knownstrings_freeable = (unsigned char *)PRVM_Alloc(prog->maxknownstrings * sizeof(unsigned char));
1924 if (prog->numknownstrings)
1926 memcpy((char **)prog->knownstrings, oldstrings, prog->numknownstrings * sizeof(char *));
1927 memcpy((char **)prog->knownstrings_freeable, oldstrings_freeable, prog->numknownstrings * sizeof(unsigned char));
1930 prog->numknownstrings++;
1932 prog->firstfreeknownstring = i + 1;
1933 prog->knownstrings[i] = (char *)PRVM_Alloc(bufferlength);
1934 prog->knownstrings_freeable[i] = true;
1936 *pointer = (char *)(prog->knownstrings[i]);
1940 void PRVM_FreeString(int num)
1943 PRVM_ERROR("PRVM_FreeString: attempt to free a NULL string");
1944 else if (num >= 0 && num < prog->stringssize)
1945 PRVM_ERROR("PRVM_FreeString: attempt to free a constant string");
1946 else if (num < 0 && num >= -prog->numknownstrings)
1949 if (!prog->knownstrings[num])
1950 PRVM_ERROR("PRVM_FreeString: attempt to free a non-existent or already freed string");
1951 if (!prog->knownstrings[num])
1952 PRVM_ERROR("PRVM_FreeString: attempt to free a string owned by the engine");
1953 PRVM_Free((char *)prog->knownstrings[num]);
1954 prog->knownstrings[num] = NULL;
1955 prog->knownstrings_freeable[num] = false;
1956 prog->firstfreeknownstring = min(prog->firstfreeknownstring, num);
1959 PRVM_ERROR("PRVM_FreeString: invalid string offset %i", num);