/*************************************************************************** * Original Diku Mud copyright (C) 1990, 1991 by Sebastian Hammer, * * Michael Seifert, Hans Henrik Strfeldt, Tom Madsen, and Katja Nyboe. * * * * Merc Diku Mud improvments copyright (C) 1992, 1993 by Michael * * Chastain, Michael Quan, and Mitchell Tse. * * * * In order to use any part of this Merc Diku Mud, you must comply with * * both the original Diku license in 'license.doc' as well the Merc * * license in 'license.txt'. In particular, you may not remove either of * * these copyright notices. * * * * Much time and thought has gone into this software and you are * * benefitting. We hope that you share your changes too. What goes * * around, comes around. * ***************************************************************************/ /*************************************************************************** * ROM 2.4 is copyright 1993-1998 Russ Taylor * * ROM has been brought to you by the ROM consortium * * Russ Taylor (rtaylor@hypercube.org) * * Gabrielle Taylor (gtaylor@hypercube.org) * * Brian Moore (zump@rom.org) * * By using this code, you have agreed to follow the terms of the * * ROM license, in the file Rom24/doc/rom.license * ***************************************************************************/ /*************************************************************************** * * * MOBprograms for ROM 2.4 v0.98g (C) M.Nylander 1996 * * Based on MERC 2.2 MOBprograms concept by N'Atas-ha. * * Written and adapted to ROM 2.4 by * * Markku Nylander (markku.nylander@uta.fi) * * This code may be copied and distributed as per the ROM license. * * * ***************************************************************************/ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> #include <sys/types.h> #include <ctype.h> #include "merc.h" #include "tables.h" #include "lookup.h" extern int flag_lookup (const char *word, const struct flag_type *flag_table); /* * These defines correspond to the entries in fn_keyword[] table. * If you add a new if_check, you must also add a #define here. */ #define CHK_RAND (0) #define CHK_MOBHERE (1) #define CHK_OBJHERE (2) #define CHK_MOBEXISTS (3) #define CHK_OBJEXISTS (4) #define CHK_PEOPLE (5) #define CHK_PLAYERS (6) #define CHK_MOBS (7) #define CHK_CLONES (8) #define CHK_ORDER (9) #define CHK_HOUR (10) #define CHK_ISPC (11) #define CHK_ISNPC (12) #define CHK_ISGOOD (13) #define CHK_ISEVIL (14) #define CHK_ISNEUTRAL (15) #define CHK_ISIMMORT (16) #define CHK_ISCHARM (17) #define CHK_ISFOLLOW (18) #define CHK_ISACTIVE (19) #define CHK_ISDELAY (20) #define CHK_ISVISIBLE (21) #define CHK_HASTARGET (22) #define CHK_ISTARGET (23) #define CHK_EXISTS (24) #define CHK_AFFECTED (25) #define CHK_ACT (26) #define CHK_OFF (27) #define CHK_IMM (28) #define CHK_CARRIES (29) #define CHK_WEARS (30) #define CHK_HAS (31) #define CHK_USES (32) #define CHK_NAME (33) #define CHK_POS (34) #define CHK_CLAN (35) #define CHK_RACE (36) #define CHK_CLASS (37) #define CHK_OBJTYPE (38) #define CHK_VNUM (39) #define CHK_HPCNT (40) #define CHK_ROOM (41) #define CHK_SEX (42) #define CHK_LEVEL (43) #define CHK_ALIGN (44) #define CHK_MONEY (45) #define CHK_OBJVAL0 (46) #define CHK_OBJVAL1 (47) #define CHK_OBJVAL2 (48) #define CHK_OBJVAL3 (49) #define CHK_OBJVAL4 (50) #define CHK_GRPSIZE (51) /* * These defines correspond to the entries in fn_evals[] table. */ #define EVAL_EQ 0 #define EVAL_GE 1 #define EVAL_LE 2 #define EVAL_GT 3 #define EVAL_LT 4 #define EVAL_NE 5 /* * if-check keywords: */ const char *fn_keyword[] = { "rand", /* if rand 30 - if random number < 30 */ "mobhere", /* if mobhere fido - is there a 'fido' here */ "objhere", /* if objhere bottle - is there a 'bottle' here */ /* if mobhere 1233 - is there mob vnum 1233 here */ /* if objhere 1233 - is there obj vnum 1233 here */ "mobexists", /* if mobexists fido - is there a fido somewhere */ "objexists", /* if objexists sword - is there a sword somewhere */ "people", /* if people > 4 - does room contain > 4 people */ "players", /* if players > 1 - does room contain > 1 pcs */ "mobs", /* if mobs > 2 - does room contain > 2 mobiles */ "clones", /* if clones > 3 - are there > 3 mobs of same vnum here */ "order", /* if order == 0 - is mob the first in room */ "hour", /* if hour > 11 - is the time > 11 o'clock */ "ispc", /* if ispc $n - is $n a pc */ "isnpc", /* if isnpc $n - is $n a mobile */ "isgood", /* if isgood $n - is $n good */ "isevil", /* if isevil $n - is $n evil */ "isneutral", /* if isneutral $n - is $n neutral */ "isimmort", /* if isimmort $n - is $n immortal */ "ischarm", /* if ischarm $n - is $n charmed */ "isfollow", /* if isfollow $n - is $n following someone */ "isactive", /* if isactive $n - is $n's position > SLEEPING */ "isdelay", /* if isdelay $i - does $i have mobprog pending */ "isvisible", /* if isvisible $n - can mob see $n */ "hastarget", /* if hastarget $i - does $i have a valid target */ "istarget", /* if istarget $n - is $n mob's target */ "exists", /* if exists $n - does $n exist somewhere */ "affected", /* if affected $n blind - is $n affected by blind */ "act", /* if act $i sentinel - is $i flagged sentinel */ "off", /* if off $i berserk - is $i flagged berserk */ "imm", /* if imm $i fire - is $i immune to fire */ "carries", /* if carries $n sword - does $n have a 'sword' */ /* if carries $n 1233 - does $n have obj vnum 1233 */ "wears", /* if wears $n lantern - is $n wearing a 'lantern' */ /* if wears $n 1233 - is $n wearing obj vnum 1233 */ "has", /* if has $n weapon - does $n have obj of type weapon */ "uses", /* if uses $n armor - is $n wearing obj of type armor */ "name", /* if name $n puff - is $n's name 'puff' */ "pos", /* if pos $n standing - is $n standing */ "clan", /* if clan $n 'whatever'- does $n belong to clan 'whatever' */ "race", /* if race $n dragon - is $n of 'dragon' race */ "class", /* if class $n mage - is $n's class 'mage' */ "objtype", /* if objtype $p scroll - is $p a scroll */ "vnum", /* if vnum $i == 1233 - virtual number check */ "hpcnt", /* if hpcnt $i > 30 - hit point percent check */ "room", /* if room $i == 1233 - room virtual number */ "sex", /* if sex $i == 0 - sex check */ "level", /* if level $n < 5 - level check */ "align", /* if align $n < -1000 - alignment check */ "money", /* if money $n */ "objval0", /* if objval0 > 1000 - object value[] checks 0..4 */ "objval1", "objval2", "objval3", "objval4", "grpsize", /* if grpsize $n > 6 - group size check */ "\n" /* Table terminator */ }; const char *fn_evals[] = { "==", ">=", "<=", ">", "<", "!=", "\n" }; /* * Return a valid keyword from a keyword table */ int keyword_lookup (const char **table, char *keyword) { register int i; for (i = 0; table[i][0] != '\n'; i++) if (!str_cmp (table[i], keyword)) return (i); return -1; } /* * Perform numeric evaluation. * Called by cmd_eval() */ int num_eval (int lval, int oper, int rval) { switch (oper) { case EVAL_EQ: return (lval == rval); case EVAL_GE: return (lval >= rval); case EVAL_LE: return (lval <= rval); case EVAL_NE: return (lval != rval); case EVAL_GT: return (lval > rval); case EVAL_LT: return (lval < rval); default: bug ("num_eval: invalid oper", 0); return 0; } } /* * --------------------------------------------------------------------- * UTILITY FUNCTIONS USED BY CMD_EVAL() * ---------------------------------------------------------------------- */ /* * Get a random PC in the room (for $r parameter) */ CHAR_DATA *get_random_char (CHAR_DATA * mob) { CHAR_DATA *vch, *victim = NULL; int now = 0, highest = 0; for (vch = mob->in_room->people; vch; vch = vch->next_in_room) { if (mob != vch && !IS_NPC (vch) && can_see (mob, vch) && (now = number_percent ()) > highest) { victim = vch; highest = now; } } return victim; } /* * How many other players / mobs are there in the room * iFlag: 0: all, 1: players, 2: mobiles 3: mobs w/ same vnum 4: same group */ int count_people_room (CHAR_DATA * mob, int iFlag) { CHAR_DATA *vch; int count; for (count = 0, vch = mob->in_room->people; vch; vch = vch->next_in_room) if (mob != vch && (iFlag == 0 || (iFlag == 1 && !IS_NPC (vch)) || (iFlag == 2 && IS_NPC (vch)) || (iFlag == 3 && IS_NPC (mob) && IS_NPC (vch) && mob->pIndexData->vnum == vch->pIndexData->vnum) || (iFlag == 4 && is_same_group (mob, vch))) && can_see (mob, vch)) count++; return (count); } /* * Get the order of a mob in the room. Useful when several mobs in * a room have the same trigger and you want only the first of them * to act */ int get_order (CHAR_DATA * ch) { CHAR_DATA *vch; int i; if (!IS_NPC (ch)) return 0; for (i = 0, vch = ch->in_room->people; vch; vch = vch->next_in_room) { if (vch == ch) return i; if (IS_NPC (vch) && vch->pIndexData->vnum == ch->pIndexData->vnum) i++; } return 0; } /* * Check if ch has a given item or item type * vnum: item vnum or -1 * item_type: item type or -1 * fWear: TRUE: item must be worn, FALSE: don't care */ bool has_item (CHAR_DATA * ch, sh_int vnum, sh_int item_type, bool fWear) { OBJ_DATA *obj; for (obj = ch->carrying; obj; obj = obj->next_content) if ((vnum < 0 || obj->pIndexData->vnum == vnum) && (item_type < 0 || obj->pIndexData->item_type == item_type) && (!fWear || obj->wear_loc != WEAR_NONE)) return TRUE; return FALSE; } /* * Check if there's a mob with given vnum in the room */ bool get_mob_vnum_room (CHAR_DATA * ch, sh_int vnum) { CHAR_DATA *mob; for (mob = ch->in_room->people; mob; mob = mob->next_in_room) if (IS_NPC (mob) && mob->pIndexData->vnum == vnum) return TRUE; return FALSE; } /* * Check if there's an object with given vnum in the room */ bool get_obj_vnum_room (CHAR_DATA * ch, sh_int vnum) { OBJ_DATA *obj; for (obj = ch->in_room->contents; obj; obj = obj->next_content) if (obj->pIndexData->vnum == vnum) return TRUE; return FALSE; } /* --------------------------------------------------------------------- * CMD_EVAL * This monster evaluates an if/or/and statement * There are five kinds of statement: * 1) keyword and value (no $-code) if random 30 * 2) keyword, comparison and value if people > 2 * 3) keyword and actor if isnpc $n * 4) keyword, actor and value if carries $n sword * 5) keyword, actor, comparison and value if level $n >= 10 * *---------------------------------------------------------------------- */ int cmd_eval (sh_int vnum, char *line, int check, CHAR_DATA * mob, CHAR_DATA * ch, const void *arg1, const void *arg2, CHAR_DATA * rch) { CHAR_DATA *lval_char = mob; CHAR_DATA *vch = (CHAR_DATA *) arg2; OBJ_DATA *obj1 = (OBJ_DATA *) arg1; OBJ_DATA *obj2 = (OBJ_DATA *) arg2; OBJ_DATA *lval_obj = NULL; char *original, buf[MAX_INPUT_LENGTH], code; int lval = 0, oper = 0, rval = -1; original = line; line = one_argument (line, buf); if (buf[0] == '\0' || mob == NULL) return FALSE; /* * If this mobile has no target, let's assume our victim is the one */ if (mob->mprog_target == NULL) mob->mprog_target = ch; switch (check) { /* * Case 1: keyword and value */ case CHK_RAND: return (atoi (buf) < number_percent ()); case CHK_MOBHERE: if (is_number (buf)) return (get_mob_vnum_room (mob, atoi (buf))); else return ((bool) (get_char_room (mob, buf) != NULL)); case CHK_OBJHERE: if (is_number (buf)) return (get_obj_vnum_room (mob, atoi (buf))); else return ((bool) (get_obj_here (mob, buf) != NULL)); case CHK_MOBEXISTS: return ((bool) (get_char_world (mob, buf) != NULL)); case CHK_OBJEXISTS: return ((bool) (get_obj_world (mob, buf) != NULL)); /* * Case 2 begins here: We sneakily use rval to indicate need * for numeric eval... */ case CHK_PEOPLE: rval = count_people_room (mob, 0); break; case CHK_PLAYERS: rval = count_people_room (mob, 1); break; case CHK_MOBS: rval = count_people_room (mob, 2); break; case CHK_CLONES: rval = count_people_room (mob, 3); break; case CHK_ORDER: rval = get_order (mob); break; case CHK_HOUR: rval = time_info.hour; break; default:; } /* * Case 2 continued: evaluate expression */ if (rval >= 0) { if ((oper = keyword_lookup (fn_evals, buf)) < 0) { sprintf (buf, "Cmd_eval: prog %d syntax error(2) '%s'", vnum, original); bug (buf, 0); return FALSE; } one_argument (line, buf); lval = rval; rval = atoi (buf); return (num_eval (lval, oper, rval)); } /* * Case 3,4,5: Grab actors from $* codes */ if (buf[0] != '$' || buf[1] == '\0') { sprintf (buf, "Cmd_eval: prog %d syntax error(3) '%s'", vnum, original); bug (buf, 0); return FALSE; } else code = buf[1]; switch (code) { case 'i': lval_char = mob; break; case 'n': lval_char = ch; break; case 't': lval_char = vch; break; case 'r': lval_char = rch == NULL ? get_random_char (mob) : rch; break; case 'o': lval_obj = obj1; break; case 'p': lval_obj = obj2; break; case 'q': lval_char = mob->mprog_target; break; default: sprintf (buf, "Cmd_eval: prog %d syntax error(4) '%s'", vnum, original); bug (buf, 0); return FALSE; } /* * From now on, we need an actor, so if none was found, bail out */ if (lval_char == NULL && lval_obj == NULL) return FALSE; /* * Case 3: Keyword, comparison and value */ switch (check) { case CHK_ISPC: return (lval_char != NULL && !IS_NPC (lval_char)); case CHK_ISNPC: return (lval_char != NULL && IS_NPC (lval_char)); case CHK_ISGOOD: return (lval_char != NULL && IS_GOOD (lval_char)); case CHK_ISEVIL: return (lval_char != NULL && IS_EVIL (lval_char)); case CHK_ISNEUTRAL: return (lval_char != NULL && IS_NEUTRAL (lval_char)); case CHK_ISIMMORT: return (lval_char != NULL && IS_IMMORTAL (lval_char)); case CHK_ISCHARM: /* A relic from MERC 2.2 MOBprograms */ return (lval_char != NULL && IS_AFFECTED (lval_char, AFF_CHARM)); case CHK_ISFOLLOW: return (lval_char != NULL && lval_char->master != NULL && lval_char->master->in_room == lval_char->in_room); case CHK_ISACTIVE: return (lval_char != NULL && lval_char->position > POS_SLEEPING); case CHK_ISDELAY: return (lval_char != NULL && lval_char->mprog_delay > 0); case CHK_ISVISIBLE: switch (code) { default: case 'i': case 'n': case 't': case 'r': case 'q': return (lval_char != NULL && can_see (mob, lval_char)); case 'o': case 'p': return (lval_obj != NULL && can_see_obj (mob, lval_obj)); } case CHK_HASTARGET: return (lval_char != NULL && lval_char->mprog_target != NULL && lval_char->in_room == lval_char->mprog_target->in_room); case CHK_ISTARGET: return (lval_char != NULL && mob->mprog_target == lval_char); default:; } /* * Case 4: Keyword, actor and value */ line = one_argument (line, buf); switch (check) { case CHK_AFFECTED: return (lval_char != NULL && IS_SET (lval_char->affected_by, flag_lookup (buf, affect_flags))); case CHK_ACT: return (lval_char != NULL && IS_SET (lval_char->act, flag_lookup (buf, act_flags))); case CHK_IMM: return (lval_char != NULL && IS_SET (lval_char->imm_flags, flag_lookup (buf, imm_flags))); case CHK_OFF: return (lval_char != NULL && IS_SET (lval_char->off_flags, flag_lookup (buf, off_flags))); case CHK_CARRIES: if (is_number (buf)) return (lval_char != NULL && has_item (lval_char, atoi (buf), -1, FALSE)); else return (lval_char != NULL && (get_obj_carry (lval_char, buf, lval_char) != NULL)); case CHK_WEARS: if (is_number (buf)) return (lval_char != NULL && has_item (lval_char, atoi (buf), -1, TRUE)); else return (lval_char != NULL && (get_obj_wear (lval_char, buf) != NULL)); case CHK_HAS: return (lval_char != NULL && has_item (lval_char, -1, item_lookup (buf), FALSE)); case CHK_USES: return (lval_char != NULL && has_item (lval_char, -1, item_lookup (buf), TRUE)); case CHK_NAME: switch (code) { default: case 'i': case 'n': case 't': case 'r': case 'q': return (lval_char != NULL && is_name (buf, lval_char->name)); case 'o': case 'p': return (lval_obj != NULL && is_name (buf, lval_obj->name)); } case CHK_POS: return (lval_char != NULL && lval_char->position == position_lookup (buf)); case CHK_CLAN: return (lval_char != NULL && lval_char->clan == clan_lookup (buf)); case CHK_RACE: return (lval_char != NULL && lval_char->race == race_lookup (buf)); case CHK_CLASS: return (lval_char != NULL && lval_char->class == class_lookup (buf)); case CHK_OBJTYPE: return (lval_obj != NULL && lval_obj->item_type == item_lookup (buf)); default:; } /* * Case 5: Keyword, actor, comparison and value */ if ((oper = keyword_lookup (fn_evals, buf)) < 0) { sprintf (buf, "Cmd_eval: prog %d syntax error(5): '%s'", vnum, original); bug (buf, 0); return FALSE; } one_argument (line, buf); rval = atoi (buf); switch (check) { case CHK_VNUM: switch (code) { default: case 'i': case 'n': case 't': case 'r': case 'q': if (lval_char != NULL && IS_NPC (lval_char)) lval = lval_char->pIndexData->vnum; break; case 'o': case 'p': if (lval_obj != NULL) lval = lval_obj->pIndexData->vnum; } break; case CHK_HPCNT: if (lval_char != NULL) lval = (lval_char->hit * 100) / (UMAX (1, lval_char->max_hit)); break; case CHK_ROOM: if (lval_char != NULL && lval_char->in_room != NULL) lval = lval_char->in_room->vnum; break; case CHK_SEX: if (lval_char != NULL) lval = lval_char->sex; break; case CHK_LEVEL: if (lval_char != NULL) lval = lval_char->level; break; case CHK_ALIGN: if (lval_char != NULL) lval = lval_char->alignment; break; case CHK_MONEY: /* Money is converted to silver... */ if (lval_char != NULL) lval = lval_char->gold + (lval_char->silver * 100); break; case CHK_OBJVAL0: if (lval_obj != NULL) lval = lval_obj->value[0]; break; case CHK_OBJVAL1: if (lval_obj != NULL) lval = lval_obj->value[1]; break; case CHK_OBJVAL2: if (lval_obj != NULL) lval = lval_obj->value[2]; break; case CHK_OBJVAL3: if (lval_obj != NULL) lval = lval_obj->value[3]; break; case CHK_OBJVAL4: if (lval_obj != NULL) lval = lval_obj->value[4]; break; case CHK_GRPSIZE: if (lval_char != NULL) lval = count_people_room (lval_char, 4); break; default: return FALSE; } return (num_eval (lval, oper, rval)); } /* * ------------------------------------------------------------------------ * EXPAND_ARG * This is a hack of act() in comm.c. I've added some safety guards, * so that missing or invalid $-codes do not crash the server * ------------------------------------------------------------------------ */ void expand_arg (char *buf, const char *format, CHAR_DATA * mob, CHAR_DATA * ch, const void *arg1, const void *arg2, CHAR_DATA * rch) { static char *const he_she[] = { "it", "he", "she" }; static char *const him_her[] = { "it", "him", "her" }; static char *const his_her[] = { "its", "his", "her" }; const char *someone = "someone"; const char *something = "something"; const char *someones = "someone's"; char fname[MAX_INPUT_LENGTH]; CHAR_DATA *vch = (CHAR_DATA *) arg2; OBJ_DATA *obj1 = (OBJ_DATA *) arg1; OBJ_DATA *obj2 = (OBJ_DATA *) arg2; const char *str; const char *i; char *point; /* * Discard null and zero-length messages. */ if (format == NULL || format[0] == '\0') return; point = buf; str = format; while (*str != '\0') { if (*str != '$') { *point++ = *str++; continue; } ++str; switch (*str) { default: bug ("Expand_arg: bad code %d.", *str); i = " <@@@> "; break; case 'i': one_argument (mob->name, fname); i = fname; break; case 'I': i = mob->short_descr; break; case 'n': i = someone; if (ch != NULL && can_see (mob, ch)) { one_argument (ch->name, fname); i = capitalize (fname); } break; case 'N': i = (ch != NULL && can_see (mob, ch)) ? (IS_NPC (ch) ? ch->short_descr : ch->name) : someone; break; case 't': i = someone; if (vch != NULL && can_see (mob, vch)) { one_argument (vch->name, fname); i = capitalize (fname); } break; case 'T': i = (vch != NULL && can_see (mob, vch)) ? (IS_NPC (vch) ? vch->short_descr : vch->name) : someone; break; case 'r': if (rch == NULL) rch = get_random_char (mob); i = someone; if (rch != NULL && can_see (mob, rch)) { one_argument (rch->name, fname); i = capitalize (fname); } break; case 'R': if (rch == NULL) rch = get_random_char (mob); i = (rch != NULL && can_see (mob, rch)) ? (IS_NPC (ch) ? ch->short_descr : ch->name) : someone; break; case 'q': i = someone; if (mob->mprog_target != NULL && can_see (mob, mob->mprog_target)) { one_argument (mob->mprog_target->name, fname); i = capitalize (fname); } break; case 'Q': i = (mob->mprog_target != NULL && can_see (mob, mob-> mprog_target)) ? (IS_NPC (mob->mprog_target) ? mob-> mprog_target->short_descr : mob->mprog_target->name) : someone; break; case 'j': i = he_she[URANGE (0, mob->sex, 2)]; break; case 'e': i = (ch != NULL && can_see (mob, ch)) ? he_she[URANGE (0, ch->sex, 2)] : someone; break; case 'E': i = (vch != NULL && can_see (mob, vch)) ? he_she[URANGE (0, vch->sex, 2)] : someone; break; case 'J': i = (rch != NULL && can_see (mob, rch)) ? he_she[URANGE (0, rch->sex, 2)] : someone; break; case 'X': i = (mob->mprog_target != NULL && can_see (mob, mob->mprog_target)) ? he_she[URANGE (0, mob->mprog_target->sex, 2)] : someone; break; case 'k': i = him_her[URANGE (0, mob->sex, 2)]; break; case 'm': i = (ch != NULL && can_see (mob, ch)) ? him_her[URANGE (0, ch->sex, 2)] : someone; break; case 'M': i = (vch != NULL && can_see (mob, vch)) ? him_her[URANGE (0, vch->sex, 2)] : someone; break; case 'K': if (rch == NULL) rch = get_random_char (mob); i = (rch != NULL && can_see (mob, rch)) ? him_her[URANGE (0, rch->sex, 2)] : someone; break; case 'Y': i = (mob->mprog_target != NULL && can_see (mob, mob->mprog_target)) ? him_her[URANGE (0, mob->mprog_target->sex, 2)] : someone; break; case 'l': i = his_her[URANGE (0, mob->sex, 2)]; break; case 's': i = (ch != NULL && can_see (mob, ch)) ? his_her[URANGE (0, ch->sex, 2)] : someones; break; case 'S': i = (vch != NULL && can_see (mob, vch)) ? his_her[URANGE (0, vch->sex, 2)] : someones; break; case 'L': if (rch == NULL) rch = get_random_char (mob); i = (rch != NULL && can_see (mob, rch)) ? his_her[URANGE (0, rch->sex, 2)] : someones; break; case 'Z': i = (mob->mprog_target != NULL && can_see (mob, mob->mprog_target)) ? his_her[URANGE (0, mob->mprog_target->sex, 2)] : someones; break; case 'o': i = something; if (obj1 != NULL && can_see_obj (mob, obj1)) { one_argument (obj1->name, fname); i = fname; } break; case 'O': i = (obj1 != NULL && can_see_obj (mob, obj1)) ? obj1->short_descr : something; break; case 'p': i = something; if (obj2 != NULL && can_see_obj (mob, obj2)) { one_argument (obj2->name, fname); i = fname; } break; case 'P': i = (obj2 != NULL && can_see_obj (mob, obj2)) ? obj2->short_descr : something; break; } ++str; while ((*point = *i) != '\0') ++point, ++i; } *point = '\0'; return; } /* * ------------------------------------------------------------------------ * PROGRAM_FLOW * This is the program driver. It parses the mob program code lines * and passes "executable" commands to interpret() * Lines beginning with 'mob' are passed to mob_interpret() to handle * special mob commands (in mob_cmds.c) *------------------------------------------------------------------------- */ #define MAX_NESTED_LEVEL 12 /* Maximum nested if-else-endif's (stack size) */ #define BEGIN_BLOCK 0 /* Flag: Begin of if-else-endif block */ #define IN_BLOCK -1 /* Flag: Executable statements */ #define END_BLOCK -2 /* Flag: End of if-else-endif block */ #define MAX_CALL_LEVEL 5 /* Maximum nested calls */ void program_flow (sh_int pvnum, /* For diagnostic purposes */ char *source, /* the actual MOBprog code */ CHAR_DATA * mob, CHAR_DATA * ch, const void *arg1, const void *arg2) { CHAR_DATA *rch = NULL; char *code, *line; char buf[MAX_STRING_LENGTH]; char control[MAX_INPUT_LENGTH], data[MAX_STRING_LENGTH]; static int call_level; /* Keep track of nested "mpcall"s */ int level, eval, check; int state[MAX_NESTED_LEVEL], /* Block state (BEGIN,IN,END) */ cond[MAX_NESTED_LEVEL]; /* Boolean value based on the last if-check */ sh_int mvnum = mob->pIndexData->vnum; if (++call_level > MAX_CALL_LEVEL) { bug ("MOBprogs: MAX_CALL_LEVEL exceeded, vnum %d", mob->pIndexData->vnum); return; } /* * Reset "stack" */ for (level = 0; level < MAX_NESTED_LEVEL; level++) { state[level] = IN_BLOCK; cond[level] = TRUE; } level = 0; code = source; /* * Parse the MOBprog code */ while (*code) { bool first_arg = TRUE; char *b = buf, *c = control, *d = data; /* * Get a command line. We sneakily get both the control word * (if/and/or) and the rest of the line in one pass. */ while (isspace (*code) && *code) code++; while (*code) { if (*code == '\n' || *code == '\r') break; else if (isspace (*code)) { if (first_arg) first_arg = FALSE; else *d++ = *code; } else { if (first_arg) *c++ = *code; else *d++ = *code; } *b++ = *code++; } *b = *c = *d = '\0'; if (buf[0] == '\0') break; if (buf[0] == '*') /* Comment */ continue; line = data; /* * Match control words */ if (!str_cmp (control, "if")) { if (state[level] == BEGIN_BLOCK) { sprintf (buf, "Mobprog: misplaced if statement, mob %d prog %d", mvnum, pvnum); bug (buf, 0); return; } state[level] = BEGIN_BLOCK; if (++level >= MAX_NESTED_LEVEL) { sprintf (buf, "Mobprog: Max nested level exceeded, mob %d prog %d", mvnum, pvnum); bug (buf, 0); return; } if (level && cond[level - 1] == FALSE) { cond[level] = FALSE; continue; } line = one_argument (line, control); if ((check = keyword_lookup (fn_keyword, control)) >= 0) { cond[level] = cmd_eval (pvnum, line, check, mob, ch, arg1, arg2, rch); } else { sprintf (buf, "Mobprog: invalid if_check (if), mob %d prog %d", mvnum, pvnum); bug (buf, 0); return; } state[level] = END_BLOCK; } else if (!str_cmp (control, "or")) { if (!level || state[level - 1] != BEGIN_BLOCK) { sprintf (buf, "Mobprog: or without if, mob %d prog %d", mvnum, pvnum); bug (buf, 0); return; } if (level && cond[level - 1] == FALSE) continue; line = one_argument (line, control); if ((check = keyword_lookup (fn_keyword, control)) >= 0) { eval = cmd_eval (pvnum, line, check, mob, ch, arg1, arg2, rch); } else { sprintf (buf, "Mobprog: invalid if_check (or), mob %d prog %d", mvnum, pvnum); bug (buf, 0); return; } cond[level] = (eval == TRUE) ? TRUE : cond[level]; } else if (!str_cmp (control, "and")) { if (!level || state[level - 1] != BEGIN_BLOCK) { sprintf (buf, "Mobprog: and without if, mob %d prog %d", mvnum, pvnum); bug (buf, 0); return; } if (level && cond[level - 1] == FALSE) continue; line = one_argument (line, control); if ((check = keyword_lookup (fn_keyword, control)) >= 0) { eval = cmd_eval (pvnum, line, check, mob, ch, arg1, arg2, rch); } else { sprintf (buf, "Mobprog: invalid if_check (and), mob %d prog %d", mvnum, pvnum); bug (buf, 0); return; } cond[level] = (cond[level] == TRUE) && (eval == TRUE) ? TRUE : FALSE; } else if (!str_cmp (control, "endif")) { if (!level || state[level - 1] != BEGIN_BLOCK) { sprintf (buf, "Mobprog: endif without if, mob %d prog %d", mvnum, pvnum); bug (buf, 0); return; } cond[level] = TRUE; state[level] = IN_BLOCK; state[--level] = END_BLOCK; } else if (!str_cmp (control, "else")) { if (!level || state[level - 1] != BEGIN_BLOCK) { sprintf (buf, "Mobprog: else without if, mob %d prog %d", mvnum, pvnum); bug (buf, 0); return; } if (level && cond[level - 1] == FALSE) continue; state[level] = IN_BLOCK; cond[level] = (cond[level] == TRUE) ? FALSE : TRUE; } else if (cond[level] == TRUE && (!str_cmp (control, "break") || !str_cmp (control, "end"))) { call_level--; return; } else if ((!level || cond[level] == TRUE) && buf[0] != '\0') { state[level] = IN_BLOCK; expand_arg (data, buf, mob, ch, arg1, arg2, rch); if (!str_cmp (control, "mob")) { /* * Found a mob restricted command, pass it to mob interpreter */ line = one_argument (data, control); mob_interpret (mob, line); } else { /* * Found a normal mud command, pass it to interpreter */ interpret (mob, data); } } } call_level--; } /* * --------------------------------------------------------------------- * Trigger handlers. These are called from various parts of the code * when an event is triggered. * --------------------------------------------------------------------- */ /* * A general purpose string trigger. Matches argument to a string trigger * phrase. */ void mp_act_trigger ( char *argument, CHAR_DATA * mob, CHAR_DATA * ch, const void *arg1, const void *arg2, int type) { MPROG_LIST *prg; if (!IS_NPC(mob)) return; for (prg = mob->pIndexData->mprogs; prg != NULL; prg = prg->next) { if (prg->trig_type == type && strstr (argument, prg->trig_phrase) != NULL) { program_flow (prg->vnum, prg->code, mob, ch, arg1, arg2); break; } } return; } /* * A general purpose percentage trigger. Checks if a random percentage * number is less than trigger phrase */ bool mp_percent_trigger (CHAR_DATA * mob, CHAR_DATA * ch, const void *arg1, const void *arg2, int type) { MPROG_LIST *prg; for (prg = mob->pIndexData->mprogs; prg != NULL; prg = prg->next) { if (prg->trig_type == type && number_percent () < atoi (prg->trig_phrase)) { program_flow (prg->vnum, prg->code, mob, ch, arg1, arg2); return (TRUE); } } return (FALSE); } void mp_bribe_trigger (CHAR_DATA * mob, CHAR_DATA * ch, int amount) { MPROG_LIST *prg; /* * Original MERC 2.2 MOBprograms used to create a money object * and give it to the mobile. WFT was that? Funcs in act_obj() * handle it just fine. */ for (prg = mob->pIndexData->mprogs; prg; prg = prg->next) { if (prg->trig_type == TRIG_BRIBE && amount >= atoi (prg->trig_phrase)) { program_flow (prg->vnum, prg->code, mob, ch, NULL, NULL); break; } } return; } bool mp_exit_trigger (CHAR_DATA * ch, int dir) { CHAR_DATA *mob; MPROG_LIST *prg; for (mob = ch->in_room->people; mob != NULL; mob = mob->next_in_room) { if (IS_NPC (mob) && (HAS_TRIGGER (mob, TRIG_EXIT) || HAS_TRIGGER (mob, TRIG_EXALL))) { for (prg = mob->pIndexData->mprogs; prg; prg = prg->next) { /* * Exit trigger works only if the mobile is not busy * (fighting etc.). If you want to be sure all players * are caught, use ExAll trigger */ if (prg->trig_type == TRIG_EXIT && dir == atoi (prg->trig_phrase) && mob->position == mob->pIndexData->default_pos && can_see (mob, ch)) { program_flow (prg->vnum, prg->code, mob, ch, NULL, NULL); return TRUE; } else if (prg->trig_type == TRIG_EXALL && dir == atoi (prg->trig_phrase)) { program_flow (prg->vnum, prg->code, mob, ch, NULL, NULL); return TRUE; } } } } return FALSE; } void mp_give_trigger (CHAR_DATA * mob, CHAR_DATA * ch, OBJ_DATA * obj) { char buf[MAX_INPUT_LENGTH], *p; MPROG_LIST *prg; for (prg = mob->pIndexData->mprogs; prg; prg = prg->next) if (prg->trig_type == TRIG_GIVE) { p = prg->trig_phrase; /* * Vnum argument */ if (is_number (p)) { if (obj->pIndexData->vnum == atoi (p)) { program_flow (prg->vnum, prg->code, mob, ch, (void *) obj, NULL); return; } } /* * Object name argument, e.g. 'sword' */ else { while (*p) { p = one_argument (p, buf); if (is_name (buf, obj->name) || !str_cmp ("all", buf)) { program_flow (prg->vnum, prg->code, mob, ch, (void *) obj, NULL); return; } } } } } void mp_greet_trigger (CHAR_DATA * ch) { CHAR_DATA *mob; for (mob = ch->in_room->people; mob != NULL; mob = mob->next_in_room) { if (IS_NPC (mob) && (HAS_TRIGGER (mob, TRIG_GREET) || HAS_TRIGGER (mob, TRIG_GRALL))) { /* * Greet trigger works only if the mobile is not busy * (fighting etc.). If you want to catch all players, use * GrAll trigger */ if (HAS_TRIGGER (mob, TRIG_GREET) && mob->position == mob->pIndexData->default_pos && can_see (mob, ch)) mp_percent_trigger (mob, ch, NULL, NULL, TRIG_GREET); else if (HAS_TRIGGER (mob, TRIG_GRALL)) mp_percent_trigger (mob, ch, NULL, NULL, TRIG_GRALL); } } return; } void mp_hprct_trigger (CHAR_DATA * mob, CHAR_DATA * ch) { MPROG_LIST *prg; for (prg = mob->pIndexData->mprogs; prg != NULL; prg = prg->next) if ((prg->trig_type == TRIG_HPCNT) && ((100 * mob->hit / mob->max_hit) < atoi (prg->trig_phrase))) { program_flow (prg->vnum, prg->code, mob, ch, NULL, NULL); break; } }