/* 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 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ // sv_edict.c -- entity dictionary #include "quakedef.h" dprograms_t *progs; dfunction_t *pr_functions; char *pr_strings; ddef_t *pr_fielddefs; ddef_t *pr_globaldefs; dstatement_t *pr_statements; globalvars_t *pr_global_struct; float *pr_globals; // same as pr_global_struct int pr_edict_size; // in bytes unsigned short pr_crc; int type_size[8] = {1,sizeof(string_t)/4,1,3,1,1,sizeof(func_t)/4,sizeof(void *)/4}; ddef_t *ED_FieldAtOfs (int ofs); qboolean ED_ParseEpair (void *base, ddef_t *key, char *s); cvar_t nomonsters = {"nomonsters", "0"}; cvar_t gamecfg = {"gamecfg", "0"}; cvar_t scratch1 = {"scratch1", "0"}; cvar_t scratch2 = {"scratch2", "0"}; cvar_t scratch3 = {"scratch3", "0"}; cvar_t scratch4 = {"scratch4", "0"}; cvar_t savedgamecfg = {"savedgamecfg", "0", true}; cvar_t saved1 = {"saved1", "0", true}; cvar_t saved2 = {"saved2", "0", true}; cvar_t saved3 = {"saved3", "0", true}; cvar_t saved4 = {"saved4", "0", true}; #define MAX_FIELD_LEN 64 #define GEFV_CACHESIZE 2 typedef struct { ddef_t *pcache; char field[MAX_FIELD_LEN]; } gefv_cache; static gefv_cache gefvCache[GEFV_CACHESIZE] = {{NULL, ""}, {NULL, ""}}; /* ================= ED_ClearEdict Sets everything to NULL ================= */ void ED_ClearEdict (edict_t *e) { memset (&e->v, 0, progs->entityfields * 4); 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 (void) { int i; edict_t *e; for ( i=svs.maxclients+1 ; i<sv.num_edicts ; i++) { e = EDICT_NUM(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 || sv.time - e->freetime > 0.5 ) ) { ED_ClearEdict (e); return e; } } if (i == MAX_EDICTS) Sys_Error ("ED_Alloc: no free edicts"); sv.num_edicts++; e = EDICT_NUM(i); ED_ClearEdict (e); return e; } /* ================= ED_Free Marks the edict as free FIXME: walk all entities and NULL out references to this entity ================= */ void ED_Free (edict_t *ed) { SV_UnlinkEdict (ed); // unlink from world bsp ed->free = true; ed->v.model = 0; ed->v.takedamage = 0; ed->v.modelindex = 0; ed->v.colormap = 0; ed->v.skin = 0; ed->v.frame = 0; VectorCopy (vec3_origin, ed->v.origin); VectorCopy (vec3_origin, ed->v.angles); ed->v.nextthink = -1; ed->v.solid = 0; ed->freetime = sv.time; } //=========================================================================== /* ============ ED_GlobalAtOfs ============ */ ddef_t *ED_GlobalAtOfs (int ofs) { ddef_t *def; int i; for (i=0 ; i<progs->numglobaldefs ; i++) { def = &pr_globaldefs[i]; if (def->ofs == ofs) return def; } return NULL; } /* ============ ED_FieldAtOfs ============ */ ddef_t *ED_FieldAtOfs (int ofs) { ddef_t *def; int i; for (i=0 ; i<progs->numfielddefs ; i++) { def = &pr_fielddefs[i]; if (def->ofs == ofs) return def; } return NULL; } /* ============ ED_FindField ============ */ ddef_t *ED_FindField (char *name) { ddef_t *def; int i; for (i=0 ; i<progs->numfielddefs ; i++) { def = &pr_fielddefs[i]; if (!strcmp(pr_strings + def->s_name,name) ) return def; } return NULL; } /* ============ ED_FindGlobal ============ */ ddef_t *ED_FindGlobal (char *name) { ddef_t *def; int i; for (i=0 ; i<progs->numglobaldefs ; i++) { def = &pr_globaldefs[i]; if (!strcmp(pr_strings + def->s_name,name) ) return def; } return NULL; } /* ============ ED_FindFunction ============ */ dfunction_t *ED_FindFunction (char *name) { dfunction_t *func; int i; for (i=0 ; i<progs->numfunctions ; i++) { func = &pr_functions[i]; if (!strcmp(pr_strings + func->s_name,name) ) return func; } return NULL; } eval_t *GetEdictFieldValue(edict_t *ed, char *field) { ddef_t *def = NULL; int i; static int rep = 0; for (i=0 ; i<GEFV_CACHESIZE ; i++) { if (!strcmp(field, gefvCache[i].field)) { def = gefvCache[i].pcache; goto Done; } } def = ED_FindField (field); if (strlen(field) < MAX_FIELD_LEN) { gefvCache[rep].pcache = def; strcpy (gefvCache[rep].field, field); rep ^= 1; } Done: if (!def) return NULL; return (eval_t *)((char *)&ed->v + def->ofs*4); } /* ============ PR_ValueString Returns a string describing *data in a type specific manner ============= */ char *PR_ValueString (etype_t type, eval_t *val) { static char line[256]; ddef_t *def; dfunction_t *f; type &= ~DEF_SAVEGLOBAL; switch (type) { case ev_string: sprintf (line, "%s", pr_strings + val->string); break; case ev_entity: sprintf (line, "entity %i", NUM_FOR_EDICT(PROG_TO_EDICT(val->edict)) ); break; case ev_function: f = pr_functions + val->function; sprintf (line, "%s()", pr_strings + f->s_name); break; case ev_field: def = ED_FieldAtOfs ( val->_int ); sprintf (line, ".%s", pr_strings + def->s_name); break; case ev_void: sprintf (line, "void"); break; case ev_float: sprintf (line, "%5.1f", val->_float); break; case ev_vector: sprintf (line, "'%5.1f %5.1f %5.1f'", val->vector[0], val->vector[1], val->vector[2]); break; case ev_pointer: sprintf (line, "pointer"); break; default: sprintf (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 (etype_t type, eval_t *val) { static char line[256]; ddef_t *def; dfunction_t *f; type &= ~DEF_SAVEGLOBAL; switch (type) { case ev_string: sprintf (line, "%s", pr_strings + val->string); break; case ev_entity: sprintf (line, "%i", NUM_FOR_EDICT(PROG_TO_EDICT(val->edict))); break; case ev_function: f = pr_functions + val->function; sprintf (line, "%s", pr_strings + f->s_name); break; case ev_field: def = ED_FieldAtOfs ( val->_int ); sprintf (line, "%s", pr_strings + def->s_name); break; case ev_void: sprintf (line, "void"); break; case ev_float: sprintf (line, "%f", val->_float); break; case ev_vector: sprintf (line, "%f %f %f", val->vector[0], val->vector[1], val->vector[2]); break; default: sprintf (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 (int ofs) { char *s; int i; ddef_t *def; void *val; static char line[128]; val = (void *)&pr_globals[ofs]; def = ED_GlobalAtOfs(ofs); if (!def) sprintf (line,"%i(???)", ofs); else { s = PR_ValueString (def->type, val); sprintf (line,"%i(%s)%s", ofs, pr_strings + def->s_name, s); } i = strlen(line); for ( ; i<20 ; i++) strcat (line," "); strcat (line," "); return line; } char *PR_GlobalStringNoContents (int ofs) { int i; ddef_t *def; static char line[128]; def = ED_GlobalAtOfs(ofs); if (!def) sprintf (line,"%i(???)", ofs); else sprintf (line,"%i(%s)", ofs, pr_strings + def->s_name); i = strlen(line); for ( ; i<20 ; i++) strcat (line," "); strcat (line," "); return line; } /* ============= ED_Print For debugging ============= */ void ED_Print (edict_t *ed) { int l; ddef_t *d; int *v; int i, j; char *name; int type; if (ed->free) { Con_Printf ("FREE\n"); return; } Con_Printf("\nEDICT %i:\n", NUM_FOR_EDICT(ed)); for (i=1 ; i<progs->numfielddefs ; i++) { d = &pr_fielddefs[i]; name = pr_strings + d->s_name; if (name[strlen(name)-2] == '_') continue; // skip _x, _y, _z vars v = (int *)((char *)&ed->v + d->ofs*4); // if the value is still all 0, skip the field type = d->type & ~DEF_SAVEGLOBAL; for (j=0 ; j<type_size[type] ; j++) if (v[j]) break; if (j == type_size[type]) continue; Con_Printf ("%s",name); l = strlen (name); while (l++ < 15) Con_Printf (" "); Con_Printf ("%s\n", PR_ValueString(d->type, (eval_t *)v)); } } /* ============= ED_Write For savegames ============= */ void ED_Write (FILE *f, edict_t *ed) { ddef_t *d; int *v; int i, j; char *name; int type; fprintf (f, "{\n"); if (ed->free) { fprintf (f, "}\n"); return; } for (i=1 ; i<progs->numfielddefs ; i++) { d = &pr_fielddefs[i]; name = pr_strings + d->s_name; if (name[strlen(name)-2] == '_') continue; // skip _x, _y, _z vars v = (int *)((char *)&ed->v + d->ofs*4); // if the value is still all 0, skip the field type = d->type & ~DEF_SAVEGLOBAL; for (j=0 ; j<type_size[type] ; j++) if (v[j]) break; if (j == type_size[type]) continue; fprintf (f,"\"%s\" ",name); fprintf (f,"\"%s\"\n", PR_UglyValueString(d->type, (eval_t *)v)); } fprintf (f, "}\n"); } void ED_PrintNum (int ent) { ED_Print (EDICT_NUM(ent)); } /* ============= ED_PrintEdicts For debugging, prints all the entities in the current server ============= */ void ED_PrintEdicts (void) { int i; Con_Printf ("%i entities\n", sv.num_edicts); for (i=0 ; i<sv.num_edicts ; i++) ED_PrintNum (i); } /* ============= ED_PrintEdict_f For debugging, prints a single edicy ============= */ void ED_PrintEdict_f (void) { int i; i = Q_atoi (Cmd_Argv(1)); if (i >= sv.num_edicts) { Con_Printf("Bad edict number\n"); return; } ED_PrintNum (i); } /* ============= ED_Count For debugging ============= */ void ED_Count (void) { int i; edict_t *ent; int active, models, solid, step; active = models = solid = step = 0; for (i=0 ; i<sv.num_edicts ; i++) { ent = EDICT_NUM(i); if (ent->free) continue; active++; if (ent->v.solid) solid++; if (ent->v.model) models++; if (ent->v.movetype == MOVETYPE_STEP) step++; } Con_Printf ("num_edicts:%3i\n", sv.num_edicts); Con_Printf ("active :%3i\n", active); Con_Printf ("view :%3i\n", models); Con_Printf ("touch :%3i\n", solid); Con_Printf ("step :%3i\n", step); } /* ============================================================================== ARCHIVING GLOBALS FIXME: need to tag constants, doesn't really work ============================================================================== */ /* ============= ED_WriteGlobals ============= */ void ED_WriteGlobals (FILE *f) { ddef_t *def; int i; char *name; int type; fprintf (f,"{\n"); for (i=0 ; i<progs->numglobaldefs ; i++) { def = &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_strings + def->s_name; fprintf (f,"\"%s\" ", name); fprintf (f,"\"%s\"\n", PR_UglyValueString(type, (eval_t *)&pr_globals[def->ofs])); } fprintf (f,"}\n"); } /* ============= ED_ParseGlobals ============= */ void ED_ParseGlobals (char *data) { char keyname[64]; ddef_t *key; while (1) { // parse key data = COM_Parse (data); if (com_token[0] == '}') break; if (!data) Sys_Error ("ED_ParseEntity: EOF without closing brace"); strcpy (keyname, com_token); // parse value data = COM_Parse (data); if (!data) Sys_Error ("ED_ParseEntity: EOF without closing brace"); if (com_token[0] == '}') Sys_Error ("ED_ParseEntity: closing brace without data"); key = ED_FindGlobal (keyname); if (!key) { Con_Printf ("'%s' is not a global\n", keyname); continue; } if (!ED_ParseEpair ((void *)pr_globals, key, com_token)) Host_Error ("ED_ParseGlobals: parse error"); } } //============================================================================ /* ============= ED_NewString ============= */ char *ED_NewString (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 (void *base, ddef_t *key, char *s) { int i; char string[128]; ddef_t *def; char *v, *w; void *d; dfunction_t *func; d = (void *)((int *)base + key->ofs); switch (key->type & ~DEF_SAVEGLOBAL) { case ev_string: *(string_t *)d = ED_NewString (s) - pr_strings; break; case ev_float: *(float *)d = 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; ((float *)d)[i] = atof (w); w = v = v+1; } break; case ev_entity: *(int *)d = EDICT_TO_PROG(EDICT_NUM(atoi (s))); break; case ev_field: def = ED_FindField (s); if (!def) { Con_Printf ("Can't find field %s\n", s); return false; } *(int *)d = G_INT(def->ofs); break; case ev_function: func = ED_FindFunction (s); if (!func) { Con_Printf ("Can't find function %s\n", s); return false; } *(func_t *)d = func - 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. ==================== */ char *ED_ParseEdict (char *data, edict_t *ent) { ddef_t *key; qboolean anglehack; qboolean init; char keyname[256]; int n; init = false; // clear it if (ent != sv.edicts) // hack memset (&ent->v, 0, progs->entityfields * 4); // go through all the dictionary pairs while (1) { // parse key data = COM_Parse (data); if (com_token[0] == '}') break; if (!data) Sys_Error ("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) Sys_Error ("ED_ParseEntity: EOF without closing brace"); if (com_token[0] == '}') Sys_Error ("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 (keyname); if (!key) { Con_Printf ("'%s' is not a field\n", keyname); continue; } if (anglehack) { char temp[32]; strcpy (temp, com_token); sprintf (com_token, "0 %s 0", temp); } if (!ED_ParseEpair ((void *)&ent->v, key, com_token)) Host_Error ("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 (char *data) { edict_t *ent; int inhibit; dfunction_t *func; ent = NULL; inhibit = 0; pr_global_struct->time = sv.time; // parse ents while (1) { // parse the opening brace data = COM_Parse (data); if (!data) break; if (com_token[0] != '{') Sys_Error ("ED_LoadFromFile: found %s when expecting {",com_token); if (!ent) ent = EDICT_NUM(0); else ent = ED_Alloc (); data = ED_ParseEdict (data, ent); // remove things from different skill levels or deathmatch if (deathmatch.value) { if (((int)ent->v.spawnflags & SPAWNFLAG_NOT_DEATHMATCH)) { ED_Free (ent); inhibit++; continue; } } else if ((current_skill == 0 && ((int)ent->v.spawnflags & SPAWNFLAG_NOT_EASY)) || (current_skill == 1 && ((int)ent->v.spawnflags & SPAWNFLAG_NOT_MEDIUM)) || (current_skill >= 2 && ((int)ent->v.spawnflags & SPAWNFLAG_NOT_HARD)) ) { ED_Free (ent); inhibit++; continue; } // // immediately call spawn function // if (!ent->v.classname) { Con_Printf ("No classname for:\n"); ED_Print (ent); ED_Free (ent); continue; } // look for the spawn function func = ED_FindFunction ( pr_strings + ent->v.classname ); if (!func) { Con_Printf ("No spawn function for:\n"); ED_Print (ent); ED_Free (ent); continue; } pr_global_struct->self = EDICT_TO_PROG(ent); PR_ExecuteProgram (func - pr_functions); } Con_DPrintf ("%i entities inhibited\n", inhibit); } /* =============== PR_LoadProgs =============== */ void PR_LoadProgs (void) { int i; // flush the non-C variable lookup cache for (i=0 ; i<GEFV_CACHESIZE ; i++) gefvCache[i].field[0] = 0; CRC_Init (&pr_crc); progs = (dprograms_t *)COM_LoadHunkFile ("progs.dat"); if (!progs) Sys_Error ("PR_LoadProgs: couldn't load progs.dat"); Con_DPrintf ("Programs occupy %iK.\n", com_filesize/1024); for (i=0 ; i<com_filesize ; i++) CRC_ProcessByte (&pr_crc, ((byte *)progs)[i]); // byte swap the header for (i=0 ; i<sizeof(*progs)/4 ; i++) ((int *)progs)[i] = LittleLong ( ((int *)progs)[i] ); if (progs->version != PROG_VERSION) Sys_Error ("progs.dat has wrong version number (%i should be %i)", progs->version, PROG_VERSION); if (progs->crc != PROGHEADER_CRC) Sys_Error ("progs.dat system vars have been modified, progdefs.h is out of date"); pr_functions = (dfunction_t *)((byte *)progs + progs->ofs_functions); pr_strings = (char *)progs + progs->ofs_strings; pr_globaldefs = (ddef_t *)((byte *)progs + progs->ofs_globaldefs); pr_fielddefs = (ddef_t *)((byte *)progs + progs->ofs_fielddefs); pr_statements = (dstatement_t *)((byte *)progs + progs->ofs_statements); pr_global_struct = (globalvars_t *)((byte *)progs + progs->ofs_globals); pr_globals = (float *)pr_global_struct; pr_edict_size = progs->entityfields * 4 + sizeof (edict_t) - sizeof(entvars_t); // byte swap the lumps for (i=0 ; i<progs->numstatements ; i++) { pr_statements[i].op = LittleShort(pr_statements[i].op); pr_statements[i].a = LittleShort(pr_statements[i].a); pr_statements[i].b = LittleShort(pr_statements[i].b); pr_statements[i].c = LittleShort(pr_statements[i].c); } for (i=0 ; i<progs->numfunctions; i++) { pr_functions[i].first_statement = LittleLong (pr_functions[i].first_statement); pr_functions[i].parm_start = LittleLong (pr_functions[i].parm_start); pr_functions[i].s_name = LittleLong (pr_functions[i].s_name); pr_functions[i].s_file = LittleLong (pr_functions[i].s_file); pr_functions[i].numparms = LittleLong (pr_functions[i].numparms); pr_functions[i].locals = LittleLong (pr_functions[i].locals); } for (i=0 ; i<progs->numglobaldefs ; i++) { pr_globaldefs[i].type = LittleShort (pr_globaldefs[i].type); pr_globaldefs[i].ofs = LittleShort (pr_globaldefs[i].ofs); pr_globaldefs[i].s_name = LittleLong (pr_globaldefs[i].s_name); } for (i=0 ; i<progs->numfielddefs ; i++) { pr_fielddefs[i].type = LittleShort (pr_fielddefs[i].type); if (pr_fielddefs[i].type & DEF_SAVEGLOBAL) Sys_Error ("PR_LoadProgs: pr_fielddefs[i].type & DEF_SAVEGLOBAL"); pr_fielddefs[i].ofs = LittleShort (pr_fielddefs[i].ofs); pr_fielddefs[i].s_name = LittleLong (pr_fielddefs[i].s_name); } for (i=0 ; i<progs->numglobals ; i++) ((int *)pr_globals)[i] = LittleLong (((int *)pr_globals)[i]); } /* =============== PR_Init =============== */ void PR_Init (void) { Cmd_AddCommand ("edict", ED_PrintEdict_f); Cmd_AddCommand ("edicts", ED_PrintEdicts); Cmd_AddCommand ("edictcount", ED_Count); Cmd_AddCommand ("profile", PR_Profile_f); Cvar_RegisterVariable (&nomonsters); Cvar_RegisterVariable (&gamecfg); Cvar_RegisterVariable (&scratch1); Cvar_RegisterVariable (&scratch2); Cvar_RegisterVariable (&scratch3); Cvar_RegisterVariable (&scratch4); Cvar_RegisterVariable (&savedgamecfg); Cvar_RegisterVariable (&saved1); Cvar_RegisterVariable (&saved2); Cvar_RegisterVariable (&saved3); Cvar_RegisterVariable (&saved4); } edict_t *EDICT_NUM(int n) { if (n < 0 || n >= sv.max_edicts) Sys_Error ("EDICT_NUM: bad number %i", n); return (edict_t *)((byte *)sv.edicts+ (n)*pr_edict_size); } int NUM_FOR_EDICT(edict_t *e) { int b; b = (byte *)e - (byte *)sv.edicts; b = b / pr_edict_size; if (b < 0 || b >= sv.num_edicts) Sys_Error ("NUM_FOR_EDICT: bad pointer"); return b; }