/* pr_edict.c entity dictionary Copyright (C) 1996-1997 Id Software, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to: Free Software Foundation, Inc. 59 Temple Place - Suite 330 Boston, MA 02111-1307, USA */ static const char rcsid[] = "$Id$"; #ifdef HAVE_CONFIG_H # include "config.h" #endif #ifdef HAVE_STRING_H # include #endif #ifdef HAVE_STRINGS_H # include #endif #include #include #include "QF/cmd.h" #include "QF/crc.h" #include "QF/cvar.h" #include "QF/hash.h" #include "QF/progs.h" #include "QF/qdefs.h" #include "QF/qendian.h" #include "QF/sys.h" #include "QF/zone.h" #include "QF/va.h" #include "QF/vfs.h" #include "compat.h" cvar_t *pr_boundscheck; cvar_t *pr_deadbeef_ents; cvar_t *pr_deadbeef_locals; int pr_type_size[ev_type_count] = { 1, 1, 1, 3, 1, 1, 1, 1, 4, 1, 1, 0, // value in opcode 1, // variable }; const char *pr_type_name[ev_type_count] = { "void", "string", "float", "vector", "entity", "field", "function", "pointer", "quaternion", "integer", "uinteger", "short", "struct", }; ddef_t *ED_FieldAtOfs (progs_t * pr, int ofs); qboolean ED_ParseEpair (progs_t * pr, pr_type_t *base, ddef_t *key, const char *s); /* ED_ClearEdict Sets everything to NULL */ void ED_ClearEdict (progs_t * pr, edict_t *e, int val) { int i; if (NUM_FOR_EDICT(pr,e)<*pr->reserved_edicts) Sys_Printf("clearing reserved edict %d\n", NUM_FOR_EDICT(pr,e)); for (i=0; i < pr->progs->entityfields; i++) e->v[i].integer_var = val; e->free = false; } /* ED_Alloc Either finds a free edict, or allocates a new one. Try to avoid reusing an entity that was recently freed, because it can cause the client to think the entity morphed into something else instead of being removed and recreated, which can cause interpolated angles and bad trails. */ edict_t * ED_Alloc (progs_t * pr) { int i; edict_t *e; int start = pr->reserved_edicts ? *pr->reserved_edicts : 0; int max_edicts = pr->pr_edictareasize / pr->pr_edict_size; for (i = start + 1; i < *(pr)->num_edicts; i++) { e = EDICT_NUM (pr, i); // the first couple seconds of server time can involve a lot of // freeing and allocating, so relax the replacement policy if (e->free && (e->freetime < 2 || *(pr)->time - e->freetime > 0.5)) { ED_ClearEdict (pr, e, 0); return e; } } if (i == max_edicts) { Sys_Printf ("WARNING: ED_Alloc: no free edicts\n"); i--; // step on whatever is the last edict e = EDICT_NUM (pr, i); if (pr->unlink) pr->unlink (e); } else (*(pr)->num_edicts)++; e = EDICT_NUM (pr, i); ED_ClearEdict (pr, e, 0); return e; } /* ED_FreeRefs NULLs all references to entity */ void ED_FreeRefs (progs_t * pr, edict_t *ed) { int i, j, k; ddef_t *def; for (i = 0; i < pr->progs->numglobaldefs; i++) { def = &pr->pr_globaldefs[i]; if ((def->type & ~DEF_SAVEGLOBAL) == ev_entity) { if (ed == G_EDICT (pr, def->ofs)) { Sys_Printf ("Reference found to free'd edict: %p\n", ed); } } } for (i = 0; i < pr->progs->numfielddefs; i++) { def = &pr->pr_fielddefs[i]; if ((def->type & ~DEF_SAVEGLOBAL) == ev_entity) { for (j = 0; j < *pr->num_edicts; j++) { k = E_var (EDICT_NUM (pr, j), def->ofs, entity); if (ed == PROG_TO_EDICT (pr, k)) Sys_Printf ("Reference found to free'd edict: %p\n", ed); } } } } /* ED_Free Marks the edict as free FIXME: walk all entities and NULL out references to this entity */ void ED_Free (progs_t * pr, edict_t *ed) { if (pr->unlink) pr->unlink (ed); // unlink from world bsp if (pr_deadbeef_ents->int_val) { ED_ClearEdict (pr, ed, 0xdeadbeef); } else { if (pr->free_edict) pr->free_edict (pr, ed); else ED_ClearEdict (pr, ed, 0); } ed->free = true; ed->freetime = *(pr)->time; } //=========================================================================== /* ED_GlobalAtOfs */ ddef_t * ED_GlobalAtOfs (progs_t * pr, int ofs) { ddef_t *def; int i; for (i = 0; i < pr->progs->numglobaldefs; i++) { def = &pr->pr_globaldefs[i]; if (def->ofs == ofs) return def; } return NULL; } /* ED_FieldAtOfs */ ddef_t * ED_FieldAtOfs (progs_t * pr, int ofs) { ddef_t *def; int i; for (i = 0; i < pr->progs->numfielddefs; i++) { def = &pr->pr_fielddefs[i]; if (def->ofs == ofs) return def; } return NULL; } /* ED_FindField */ ddef_t * ED_FindField (progs_t * pr, const char *name) { return Hash_Find (pr->field_hash, name); } int ED_GetFieldIndex (progs_t *pr, const char *name) { ddef_t *def; def = ED_FindField (pr, name); if (def) return def->ofs; return -1; } /* PR_FindGlobal */ ddef_t * PR_FindGlobal (progs_t * pr, const char *name) { return Hash_Find (pr->global_hash, name); } pr_type_t * PR_GetGlobalPointer (progs_t *pr, const char *name) { ddef_t *def; def = PR_FindGlobal (pr, name); if (def) return &pr->pr_globals[def->ofs]; PR_Error (pr, "undefined global %s", name); return 0; } func_t PR_GetFunctionIndex (progs_t *pr, const char *name) { dfunction_t *func = ED_FindFunction (pr, name); if (func) return func - pr->pr_functions; PR_Error (pr, "undefined function %s", name); return -1; } int PR_GetFieldOffset (progs_t *pr, const char *name) { ddef_t *def = ED_FindField (pr, name); if (def) return def->ofs; PR_Error (pr, "undefined field %s", name); return -1; } /* ED_FindFunction */ dfunction_t * ED_FindFunction (progs_t * pr, const char *name) { return Hash_Find (pr->function_hash, name); } pr_type_t * GetEdictFieldValue (progs_t * pr, edict_t *ed, const char *field) { ddef_t *def; def = ED_FindField (pr, field); if (!def) return NULL; return &ed->v[def->ofs]; } /* PR_ValueString Returns a string describing *data in a type specific manner */ char * PR_ValueString (progs_t * pr, etype_t type, pr_type_t *val) { static char line[256]; ddef_t *def; dfunction_t *f; type &= ~DEF_SAVEGLOBAL; switch (type) { case ev_string: snprintf (line, sizeof (line), "%s", PR_GetString (pr, val->string_var)); break; case ev_entity: snprintf (line, sizeof (line), "entity %i", NUM_FOR_BAD_EDICT (pr, PROG_TO_EDICT (pr, val->entity_var))); break; case ev_func: f = pr->pr_functions + val->func_var; snprintf (line, sizeof (line), "%s()", PR_GetString (pr, f->s_name)); break; case ev_field: def = ED_FieldAtOfs (pr, val->integer_var); snprintf (line, sizeof (line), ".%s", PR_GetString (pr, def->s_name)); break; case ev_void: strcpy (line, "void"); break; case ev_float: snprintf (line, sizeof (line), "%5.1f", val->float_var); break; case ev_vector: snprintf (line, sizeof (line), "'%5.1f %5.1f %5.1f'", val->vector_var[0], val->vector_var[1], val->vector_var[2]); break; case ev_pointer: strcpy (line, "pointer"); break; case ev_quaternion: snprintf (line, sizeof (line), "'%5.1f %5.1f %5.1f %5.1f'", val->vector_var[0], val->vector_var[1], val->vector_var[2], val->vector_var[3]); break; case ev_integer: snprintf (line, sizeof (line), "%d", val->integer_var); break; case ev_uinteger: snprintf (line, sizeof (line), "%u", val->uinteger_var); break; default: snprintf (line, sizeof (line), "bad type %i", type); break; } return line; } /* PR_UglyValueString Returns a string describing *data in a type specific manner Easier to parse than PR_ValueString */ char * PR_UglyValueString (progs_t * pr, etype_t type, pr_type_t *val) { static char line[256]; ddef_t *def; dfunction_t *f; type &= ~DEF_SAVEGLOBAL; switch (type) { case ev_string: snprintf (line, sizeof (line), "%s", PR_GetString (pr, val->string_var)); break; case ev_entity: snprintf (line, sizeof (line), "%i", NUM_FOR_BAD_EDICT (pr, PROG_TO_EDICT (pr, val->entity_var))); break; case ev_func: f = pr->pr_functions + val->func_var; snprintf (line, sizeof (line), "%s", PR_GetString (pr, f->s_name)); break; case ev_field: def = ED_FieldAtOfs (pr, val->integer_var); snprintf (line, sizeof (line), "%s", PR_GetString (pr, def->s_name)); break; case ev_void: strcpy (line, "void"); break; case ev_float: snprintf (line, sizeof (line), "%f", val->float_var); break; case ev_vector: snprintf (line, sizeof (line), "%f %f %f", val->vector_var[0], val->vector_var[1], val->vector_var[2]); break; default: snprintf (line, sizeof (line), "bad type %i", type); break; } return line; } /* PR_GlobalString Returns a string with a description and the contents of a global, padded to 20 field width */ char * PR_GlobalString (progs_t * pr, int ofs, etype_t type) { char *s; int i; ddef_t *def = 0; void *val; static char line[128]; if (type == ev_short) { snprintf (line, sizeof (line), "%-20d", (short) ofs); return line; } if (pr_debug->int_val && pr->debug) def = PR_Get_Local_Def (pr, ofs); val = (void *) &pr->pr_globals[ofs]; if (!def) def = ED_GlobalAtOfs (pr, ofs); if (!def && type == ev_void) snprintf (line, sizeof (line), "%i(?)", ofs); else { char *name = "?"; char *oi = ""; if (def) { if (type == ev_void) type = def->type; name = PR_GetString (pr, def->s_name); if (type != def->type) oi = "!"; } s = PR_ValueString (pr, type, val); snprintf (line, sizeof (line), "%i(%s%s)%s", ofs, oi, name, s); } i = strlen (line); for (; i < 20; i++) strncat (line, " ", sizeof (line) - strlen (line)); strncat (line, " ", sizeof (line) - strlen (line)); return line; } char * PR_GlobalStringNoContents (progs_t * pr, int ofs, etype_t type) { int i; ddef_t *def = 0; static char line[128]; if (type == ev_short) { snprintf (line, sizeof (line), "%-20d", (short) ofs); return line; } if (pr_debug->int_val && pr->debug) def = PR_Get_Local_Def (pr, ofs); if (!def) def = ED_GlobalAtOfs (pr, ofs); if (!def) snprintf (line, sizeof (line), "%i(?)", ofs); else snprintf (line, sizeof (line), "%i(%s)", ofs, PR_GetString (pr, def->s_name)); i = strlen (line); for (; i < 20; i++) strncat (line, " ", sizeof (line) - strlen (line)); strncat (line, " ", sizeof (line) - strlen (line)); return line; } /* ED_Print For debugging */ void ED_Print (progs_t * pr, edict_t *ed) { int l; ddef_t *d; pr_type_t *v; int i; char *name; int type; if (ed->free) { Sys_Printf ("FREE\n"); return; } Sys_Printf ("\nEDICT %i:\n", NUM_FOR_BAD_EDICT (pr, ed)); for (i = 1; i < pr->progs->numfielddefs; i++) { d = &pr->pr_fielddefs[i]; name = PR_GetString (pr, d->s_name); if (name[strlen (name) - 2] == '_') continue; // skip _x, _y, _z vars v = ed->v + d->ofs; // if the value is still all 0, skip the field type = d->type & ~DEF_SAVEGLOBAL; switch (type) { case ev_entity: case ev_integer: case ev_func: case ev_field: if (!v->integer_var) continue; break; case ev_string: if (!PR_GetString (pr, v->string_var)[0]) continue; break; case ev_float: if (!v->float_var) continue; break; case ev_vector: if (!v[0].float_var && !v[1].float_var && !v[2].float_var) continue; break; default: PR_Error (pr, "ED_Print: Unhandled type %d\n", type); } Sys_Printf ("%s", name); l = strlen (name); while (l++ < 15) Sys_Printf (" "); Sys_Printf ("%s\n", PR_ValueString (pr, d->type, v)); } } /* ED_Write For savegames */ void ED_Write (progs_t * pr, VFile *f, edict_t *ed) { ddef_t *d; pr_type_t *v; int i, j; char *name; int type; Qprintf (f, "{\n"); if (ed->free) { Qprintf (f, "}\n"); return; } for (i = 1; i < pr->progs->numfielddefs; i++) { d = &pr->pr_fielddefs[i]; name = PR_GetString (pr, d->s_name); if (name[strlen (name) - 2] == '_') continue; // skip _x, _y, _z vars v = &ed->v[d->ofs]; // if the value is still all 0, skip the field type = d->type & ~DEF_SAVEGLOBAL; for (j = 0; j < pr_type_size[type]; j++) if (v[j].integer_var) break; if (j == pr_type_size[type]) continue; Qprintf (f, "\"%s\" ", name); Qprintf (f, "\"%s\"\n", PR_UglyValueString (pr, d->type, v)); } Qprintf (f, "}\n"); } void ED_PrintNum (progs_t * pr, int ent) { ED_Print (pr, EDICT_NUM (pr, ent)); } /* ED_PrintEdicts For debugging, prints all the entities in the current server */ void ED_PrintEdicts (progs_t *pr, const char *fieldval) { int i; int count; ddef_t *def; def = ED_FindField(pr, "classname"); if (fieldval && fieldval[0] && def) { count = 0; for (i = 0; i < *(pr)->num_edicts; i++) if (strequal(fieldval, E_STRING (pr, EDICT_NUM(pr, i), def->ofs))) { ED_PrintNum (pr, i); count++; } Sys_Printf ("%i entities\n", count); } else { for (i = 0; i < *(pr)->num_edicts; i++) ED_PrintNum (pr, i); Sys_Printf ("%i entities\n", *(pr)->num_edicts); } } /* ED_Count For debugging */ void ED_Count (progs_t * pr) { int i; edict_t *ent; int active, models, solid, step, zombie; ddef_t *solid_def; ddef_t *model_def; solid_def = ED_FindField (pr, "solid"); model_def = ED_FindField (pr, "model"); active = models = solid = step = zombie = 0; for (i = 0; i < *(pr)->num_edicts; i++) { ent = EDICT_NUM (pr, i); if (ent->free) { if (*(pr)->time - ent->freetime <= 0.5) zombie++; continue; } active++; if (solid_def && ent->v[solid_def->ofs].float_var) solid++; if (model_def && ent->v[model_def->ofs].float_var) models++; } Sys_Printf ("num_edicts:%3i\n", *(pr)->num_edicts); Sys_Printf ("active :%3i\n", active); Sys_Printf ("view :%3i\n", models); Sys_Printf ("touch :%3i\n", solid); Sys_Printf ("zombie :%3i\n", zombie); } /* ARCHIVING GLOBALS FIXME: need to tag constants, doesn't really work */ /* ED_WriteGlobals */ void ED_WriteGlobals (progs_t * pr, VFile *f) { ddef_t *def; int i; char *name; int type; Qprintf (f, "{\n"); for (i = 0; i < pr->progs->numglobaldefs; i++) { def = &pr->pr_globaldefs[i]; type = def->type; if (!(def->type & DEF_SAVEGLOBAL)) continue; type &= ~DEF_SAVEGLOBAL; if (type != ev_string && type != ev_float && type != ev_entity) continue; name = PR_GetString (pr, def->s_name); Qprintf (f, "\"%s\" ", name); Qprintf (f, "\"%s\"\n", PR_UglyValueString (pr, type, &pr->pr_globals[def->ofs])); } Qprintf (f, "}\n"); } /* ED_ParseGlobals */ void ED_ParseGlobals (progs_t * pr, const char *data) { char keyname[64]; ddef_t *key; while (1) { // parse key data = COM_Parse (data); if (com_token[0] == '}') break; if (!data) PR_Error (pr, "ED_ParseEntity: EOF without closing brace"); strcpy (keyname, com_token); // parse value data = COM_Parse (data); if (!data) PR_Error (pr, "ED_ParseEntity: EOF without closing brace"); if (com_token[0] == '}') PR_Error (pr, "ED_ParseEntity: closing brace without data"); key = PR_FindGlobal (pr, keyname); if (!key) { Sys_Printf ("'%s' is not a global\n", keyname); continue; } if (!ED_ParseEpair (pr, pr->pr_globals, key, com_token)) PR_Error (pr, "ED_ParseGlobals: parse error"); } } //============================================================================ /* ED_NewString */ char * ED_NewString (progs_t * pr, const char *string) { char *new, *new_p; int i, l; l = strlen (string) + 1; new = Hunk_Alloc (l); new_p = new; for (i = 0; i < l; i++) { if (string[i] == '\\' && i < l - 1) { i++; if (string[i] == 'n') *new_p++ = '\n'; else *new_p++ = '\\'; } else *new_p++ = string[i]; } return new; } /* ED_ParseEval Can parse either fields or globals returns false if error */ qboolean ED_ParseEpair (progs_t * pr, pr_type_t *base, ddef_t *key, const char *s) { int i; char string[128]; ddef_t *def; char *v, *w; pr_type_t *d; dfunction_t *func; d = &base[key->ofs]; switch (key->type & ~DEF_SAVEGLOBAL) { case ev_string: d->string_var = PR_SetString (pr, ED_NewString (pr, s)); break; case ev_float: d->float_var = atof (s); break; case ev_vector: strcpy (string, s); v = string; w = string; for (i = 0; i < 3; i++) { while (*v && *v != ' ') v++; *v = 0; d->vector_var[i] = atof (w); w = v = v + 1; } break; case ev_entity: d->entity_var = EDICT_TO_PROG (pr, EDICT_NUM (pr, atoi (s))); break; case ev_field: def = ED_FindField (pr, s); if (!def) { Sys_Printf ("Can't find field %s\n", s); return false; } d->integer_var = G_INT (pr, def->ofs); break; case ev_func: func = ED_FindFunction (pr, s); if (!func) { Sys_Printf ("Can't find function %s\n", s); return false; } d->func_var = func - pr->pr_functions; break; default: break; } return true; } /* ED_ParseEdict Parses an edict out of the given string, returning the new position ed should be a properly initialized empty edict. Used for initial level load and for savegames. */ const char * ED_ParseEdict (progs_t * pr, const char *data, edict_t *ent) { ddef_t *key; qboolean anglehack; qboolean init; char keyname[256]; int n; init = false; // clear it if (ent != *(pr)->edicts) // hack memset (&ent->v, 0, pr->progs->entityfields * 4); // go through all the dictionary pairs while (1) { // parse key data = COM_Parse (data); if (com_token[0] == '}') break; if (!data) PR_Error (pr, "ED_ParseEntity: EOF without closing brace"); // anglehack is to allow QuakeEd to write single scalar angles // and allow them to be turned into vectors. (FIXME...) if (!strcmp (com_token, "angle")) { strcpy (com_token, "angles"); anglehack = true; } else anglehack = false; // FIXME: change light to _light to get rid of this hack if (!strcmp (com_token, "light")) strcpy (com_token, "light_lev"); // hack for single light def strcpy (keyname, com_token); // another hack to fix heynames with trailing spaces n = strlen (keyname); while (n && keyname[n - 1] == ' ') { keyname[n - 1] = 0; n--; } // parse value data = COM_Parse (data); if (!data) PR_Error (pr, "ED_ParseEntity: EOF without closing brace"); if (com_token[0] == '}') PR_Error (pr, "ED_ParseEntity: closing brace without data"); init = true; // keynames with a leading underscore are used for utility comments, // and are immediately discarded by quake if (keyname[0] == '_') continue; key = ED_FindField (pr, keyname); if (!key) { if (!pr->parse_field || !pr->parse_field (pr, keyname, com_token)) { Sys_Printf ("'%s' is not a field\n", keyname); continue; } } else { int ret; if (anglehack) { ret = ED_ParseEpair (pr, ent->v, key, va ("0 %s 0", com_token)); } else { ret = ED_ParseEpair (pr, ent->v, key, com_token); } if (!ret) PR_Error (pr, "ED_ParseEdict: parse error"); } } if (!init) ent->free = true; return data; } /* ED_LoadFromFile The entities are directly placed in the array, rather than allocated with ED_Alloc, because otherwise an error loading the map would have entity number references out of order. Creates a server's entity / program execution context by parsing textual entity definitions out of an ent file. Used for both fresh maps and savegame loads. A fresh map would also need to call ED_CallSpawnFunctions () to let the objects initialize themselves. */ void ED_LoadFromFile (progs_t * pr, const char *data) { edict_t *ent; int inhibit; dfunction_t *func; pr_type_t *classname; ddef_t *def; ent = NULL; inhibit = 0; *pr->globals.time = *(pr)->time; // parse ents while (1) { // parse the opening brace data = COM_Parse (data); if (!data) break; if (com_token[0] != '{') PR_Error (pr, "ED_LoadFromFile: found %s when expecting {", com_token); if (!ent) ent = EDICT_NUM (pr, 0); else ent = ED_Alloc (pr); data = ED_ParseEdict (pr, data, ent); // remove things from different skill levels or deathmatch if (pr->prune_edict && pr->prune_edict (pr, ent)) { ED_Free (pr, ent); inhibit++; continue; } // // immediately call spawn function // def = ED_FindField (pr, "classname"); if (!def) { Sys_Printf ("No classname for:\n"); ED_Print (pr, ent); ED_Free (pr, ent); continue; } classname = &ent->v[def->ofs]; // look for the spawn function func = ED_FindFunction (pr, PR_GetString (pr, classname->string_var)); if (!func) { Sys_Printf ("No spawn function for:\n"); ED_Print (pr, ent); ED_Free (pr, ent); continue; } *pr->globals.self = EDICT_TO_PROG (pr, ent); PR_ExecuteProgram (pr, func - pr->pr_functions); if (pr->flush) pr->flush (); } Sys_DPrintf ("%i entities inhibited\n", inhibit); } static const char * builtin_get_key (void *_bi, void *unused) { builtin_t *bi = (builtin_t *)_bi; return bi->name; } static const char * function_get_key (void *f, void *_pr) { progs_t *pr = (progs_t*)_pr; dfunction_t *func = (dfunction_t*)f; return PR_GetString (pr, func->s_name); } static const char * var_get_key (void *d, void *_pr) { progs_t *pr = (progs_t*)_pr; ddef_t *def = (ddef_t*)d; return PR_GetString (pr, def->s_name); } void PR_LoadProgsFile (progs_t * pr, const char *progsname) { int i; if (progsname) pr->progs = (dprograms_t *) COM_LoadHunkFile (progsname); else progsname = pr->progs_name; if (!pr->progs) return; pr->progs_size = com_filesize; Sys_DPrintf ("Programs occupy %iK.\n", com_filesize / 1024); // store prog crc pr->crc = CRC_Block ((byte *) pr->progs, com_filesize); // byte swap the header for (i = 0; i < sizeof (*pr->progs) / 4; i++) ((int *) pr->progs)[i] = LittleLong (((int *) pr->progs)[i]); if (pr->progs->version != PROG_VERSION && pr->progs->version != PROG_ID_VERSION) { if (pr->progs->version < 0x00fff000) { PR_Error (pr, "%s has unrecognised version number (%d)", progsname, pr->progs->version); } else { PR_Error (pr, "%s has unrecognised version number (%02x.%03x.%03x)" " [%02x.%03x.%03x expected]", progsname, pr->progs->version >> 24, (pr->progs->version >> 12) & 0xfff, pr->progs->version & 0xfff, PROG_VERSION >> 24, (PROG_VERSION >> 12) & 0xfff, PROG_VERSION & 0xfff); } } pr->progs_name = progsname; //XXX is this safe? pr->pr_functions = (dfunction_t *) ((byte *) pr->progs + pr->progs->ofs_functions); pr->pr_strings = (char *) pr->progs + pr->progs->ofs_strings; pr->pr_stringsize = LittleLong (pr->progs->numstrings); pr->pr_globaldefs = (ddef_t *) ((byte *) pr->progs + pr->progs->ofs_globaldefs); pr->pr_fielddefs = (ddef_t *) ((byte *) pr->progs + pr->progs->ofs_fielddefs); pr->pr_statements = (dstatement_t *) ((byte *) pr->progs + pr->progs->ofs_statements); pr->pr_globals = (pr_type_t *) ((byte *) pr->progs + pr->progs->ofs_globals); // size of edict ascked for by progs pr->pr_edict_size = pr->progs->entityfields * 4; // size of engine data pr->pr_edict_size += sizeof (edict_t) - sizeof (pr_type_t); // round off to next highest whole word address (esp for Alpha) // this ensures that pointers in the engine data area are always // properly aligned pr->pr_edict_size += sizeof (void*) - 1; pr->pr_edict_size &= ~(sizeof (void*) - 1); pr->pr_edictareasize = 0; if (pr->function_hash) { Hash_FlushTable (pr->function_hash); } else { pr->function_hash = Hash_NewTable (1021, function_get_key, 0, pr); } if (pr->global_hash) { Hash_FlushTable (pr->global_hash); } else { pr->global_hash = Hash_NewTable (1021, var_get_key, 0, pr); } if (pr->field_hash) { Hash_FlushTable (pr->field_hash); } else { pr->field_hash = Hash_NewTable (1021, var_get_key, 0, pr); } // byte swap the lumps for (i = 0; i < pr->progs->numstatements; i++) { pr->pr_statements[i].op = LittleShort (pr->pr_statements[i].op); pr->pr_statements[i].a = LittleShort (pr->pr_statements[i].a); pr->pr_statements[i].b = LittleShort (pr->pr_statements[i].b); pr->pr_statements[i].c = LittleShort (pr->pr_statements[i].c); } for (i = 0; i < pr->progs->numfunctions; i++) { pr->pr_functions[i].first_statement = LittleLong (pr->pr_functions[i].first_statement); pr->pr_functions[i].parm_start = LittleLong (pr->pr_functions[i].parm_start); pr->pr_functions[i].s_name = LittleLong (pr->pr_functions[i].s_name); pr->pr_functions[i].s_file = LittleLong (pr->pr_functions[i].s_file); pr->pr_functions[i].numparms = LittleLong (pr->pr_functions[i].numparms); pr->pr_functions[i].locals = LittleLong (pr->pr_functions[i].locals); Hash_Add (pr->function_hash, &pr->pr_functions[i]); } for (i = 0; i < pr->progs->numglobaldefs; i++) { pr->pr_globaldefs[i].type = LittleShort (pr->pr_globaldefs[i].type); pr->pr_globaldefs[i].ofs = LittleShort (pr->pr_globaldefs[i].ofs); pr->pr_globaldefs[i].s_name = LittleLong (pr->pr_globaldefs[i].s_name); Hash_Add (pr->global_hash, &pr->pr_globaldefs[i]); } for (i = 0; i < pr->progs->numfielddefs; i++) { pr->pr_fielddefs[i].type = LittleShort (pr->pr_fielddefs[i].type); if (pr->pr_fielddefs[i].type & DEF_SAVEGLOBAL) PR_Error (pr, "PR_LoadProgs: pr_fielddefs[i].type & DEF_SAVEGLOBAL"); pr->pr_fielddefs[i].ofs = LittleShort (pr->pr_fielddefs[i].ofs); pr->pr_fielddefs[i].s_name = LittleLong (pr->pr_fielddefs[i].s_name); Hash_Add (pr->field_hash, &pr->pr_fielddefs[i]); } for (i = 0; i < pr->progs->numglobals; i++) ((int *) pr->pr_globals)[i] = LittleLong (((int *) pr->pr_globals)[i]); } int PR_ResolveGlobals (progs_t *pr) { char *sym; if (!(pr->globals.time = (float*)PR_GetGlobalPointer (pr, sym = "time"))) goto error; if (!(pr->globals.self = (int*)PR_GetGlobalPointer (pr, sym = "self"))) goto error; if ((pr->fields.nextthink = ED_GetFieldIndex (pr, sym = "nextthink")) == -1) goto error; if ((pr->fields.frame = ED_GetFieldIndex (pr, sym = "frame")) == -1) goto error; if ((pr->fields.think = ED_GetFieldIndex (pr, sym = "think")) == -1) goto error; return 1; error: Sys_Printf ("%s: undefined symbol: %s", pr->progs_name, sym); return 0; } /* PR_LoadProgs */ void PR_LoadProgs (progs_t *pr, const char *progsname) { PR_LoadProgsFile (pr, progsname); if (!pr->progs) return; if (!progsname) progsname = "(preloaded)"; if (!PR_ResolveGlobals (pr)) PR_Error (pr, "unable to load %s", progsname); // initialise the strings managment code PR_LoadStrings (pr); PR_LoadDebug (pr); PR_Check_Opcodes (pr); } edict_t * PR_InitEdicts (progs_t *pr, int num_edicts) { edict_t *edicts; edict_t *e; int i, j; pr->pr_edictareasize = pr->pr_edict_size * num_edicts; edicts = Hunk_AllocName (pr->pr_edictareasize, "edicts"); (*pr->edicts) = edicts; if (pr_deadbeef_ents->int_val) { memset (edicts, 0, *pr->reserved_edicts * pr->pr_edict_size); for (j = *pr->reserved_edicts; j < num_edicts; j++) { e = EDICT_NUM (pr, j); for (i=0; i < pr->progs->entityfields; i++) e->v[i].integer_var = 0xdeadbeef; } } else { memset (edicts, 0, pr->pr_edictareasize); } return edicts; } void PR_Init_Cvars (void) { pr_boundscheck = Cvar_Get ("pr_boundscheck", "1", CVAR_NONE, NULL, "Server progs bounds checking"); pr_deadbeef_ents = Cvar_Get ("pr_deadbeef_ents", "0", CVAR_NONE, NULL, "set to clear unallocated memory to 0xdeadbeef"); pr_deadbeef_locals = Cvar_Get ("pr_deadbeef_locals", "0", CVAR_NONE, NULL, "set to clear uninitialized local vars to " "0xdeadbeef"); PR_Debug_Init_Cvars (); } void PR_Init (void) { PR_Opcode_Init (); PR_Debug_Init (); } #define PR_AUTOBUILTIN 120 void PR_AddBuiltin (progs_t *pr, const char *name, builtin_proc builtin, int num) { int i; if (!pr->builtin_hash) pr->builtin_hash = Hash_NewTable (1021, builtin_get_key, 0, pr); if (pr->numbuiltins == 0) { pr->builtins = calloc (PR_AUTOBUILTIN, sizeof (builtin_t*)); pr->numbuiltins = PR_AUTOBUILTIN; if (!pr->builtins) PR_Error (pr, "PR_AddBuiltin: memory allocation error!\n"); } if (num < 0) { for (i = PR_AUTOBUILTIN; i < pr->numbuiltins && pr->builtins[i]; i++) ; if (i >= pr->numbuiltins) { pr->numbuiltins++; pr->builtins = realloc (pr->builtins, pr->numbuiltins * sizeof (builtin_t*)); if (!pr->builtins) PR_Error (pr, "PR_AddBuiltin: memory allocation error!\n"); } } else { if (num >= PR_AUTOBUILTIN || num == 0) PR_Error (pr, "PR_AddBuiltin: invalid builtin number.\n"); if (pr->builtins[num]) PR_Error (pr, "PR_AddBuiltin: builtin number already exists.\n"); i = num; } pr->builtins[i] = malloc (sizeof (builtin_t)); pr->builtins[i]->proc = builtin; pr->builtins[i]->name = name; pr->builtins[i]->first_statement = i; Hash_Add (pr->builtin_hash, pr->builtins[i]); } builtin_t * PR_FindBuiltin (progs_t *pr, const char *name) { return (builtin_t *) Hash_Find (pr->builtin_hash, name); } edict_t * EDICT_NUM (progs_t * pr, int n) { int offs = n * pr->pr_edict_size; if (offs < 0 || n >= pr->pr_edictareasize) PR_RunError (pr, "EDICT_NUM: bad number %i", n); return PROG_TO_EDICT (pr, offs); } int NUM_FOR_BAD_EDICT (progs_t *pr, edict_t *e) { int b; b = (byte *) e - (byte *) * (pr)->edicts; b = b / pr->pr_edict_size; return b; } int NUM_FOR_EDICT (progs_t *pr, edict_t *e) { int b; b = NUM_FOR_BAD_EDICT (pr, e); if (b && (b < 0 || b >= *(pr)->num_edicts)) PR_RunError (pr, "NUM_FOR_EDICT: bad pointer %d %p %p", b, e, * (pr)->edicts); return b; } void PR_Error (progs_t *pr, const char *error, ...) { va_list argptr; char string[1024]; va_start (argptr, error); vsnprintf (string, sizeof (string), error, argptr); va_end (argptr); Sys_Error ("%s: %s", pr->progs_name, string); } int PR_AccessField (progs_t *pr, const char *name, etype_t type, const char *file, int line) { ddef_t *def = ED_FindField (pr, name); if (!def) PR_Error (pr, "undefined field %s accessed at %s:%d", name, file, line); if (def->type != type) PR_Error (pr, "bad type access to %s as %s (should be %s) at %s:%d", name, pr_type_name[type], pr_type_name[def->type], file, line); return def->ofs; } int PR_RelocateBuiltins (progs_t *pr) { int i; dfunction_t *func; builtin_t *bi; const char *bi_name; for (i = 1; i < pr->progs->numfunctions; i++) { func = pr->pr_functions + i; if (func->first_statement) continue; bi_name = PR_GetString (pr, func->s_name); bi = PR_FindBuiltin (pr, bi_name); if (!bi) { Sys_Printf ("PR_RelocateBuiltins: %s: undefined builtin %s\n", pr->progs_name, bi_name); return 0; } func->first_statement = -bi->first_statement; } return 1; }