Mercurial > hg > early-roguelike
view rogue5/scrolls.c @ 113:aa582a02eb5d
srogue: remove unnecessary pointer cast.
Casting char* to int before a comparison doesn't alter the result, and
isn't safe if sizeof(char *) != sizeof(int).
author | John "Elwin" Edwards |
---|---|
date | Thu, 27 Mar 2014 11:09:30 -0700 |
parents | f502bf60e6e4 |
children |
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/* * Read a scroll and let it happen * * @(#)scrolls.c 4.44 (Berkeley) 02/05/99 * * Rogue: Exploring the Dungeons of Doom * Copyright (C) 1980-1983, 1985, 1999 Michael Toy, Ken Arnold and Glenn Wichman * All rights reserved. * * See the file LICENSE.TXT for full copyright and licensing information. */ #include <curses.h> #include <ctype.h> #include "rogue.h" /* * read_scroll: * Read a scroll from the pack and do the appropriate thing */ void read_scroll(void) { THING *obj; PLACE *pp; int y, x; int ch; int i; int discardit = FALSE; struct room *cur_room; THING *orig_obj; coord mp; obj = get_item("read", SCROLL); if (obj == NULL) return; if (obj->o_type != SCROLL) { if (!terse) msg("there is nothing on it to read"); else msg("nothing to read"); return; } /* * Calculate the effect it has on the poor guy. */ if (obj == cur_weapon) cur_weapon = NULL; /* * Get rid of the thing */ discardit = (obj->o_count == 1); leave_pack(obj, FALSE, FALSE); orig_obj = obj; switch (obj->o_which) { case S_CONFUSE: /* * Scroll of monster confusion. Give him that power. */ player.t_flags |= CANHUH; msg("your hands begin to glow %s", pick_color("red")); when S_ARMOR: if (cur_armor != NULL) { cur_armor->o_arm--; cur_armor->o_flags &= ~ISCURSED; msg("your armor glows %s for a moment", pick_color("silver")); } when S_HOLD: /* * Hold monster scroll. Stop all monsters within two spaces * from chasing after the hero. */ ch = 0; for (x = hero.x - 2; x <= hero.x + 2; x++) if (x >= 0 && x < NUMCOLS) for (y = hero.y - 2; y <= hero.y + 2; y++) if (y >= 0 && y <= NUMLINES - 1) if ((obj = moat(y, x)) != NULL && on(*obj, ISRUN)) { obj->t_flags &= ~ISRUN; obj->t_flags |= ISHELD; ch++; } if (ch) { addmsg("the monster"); if (ch > 1) addmsg("s around you"); addmsg(" freeze"); if (ch == 1) addmsg("s"); endmsg(); scr_info[S_HOLD].oi_know = TRUE; } else msg("you feel a strange sense of loss"); when S_SLEEP: /* * Scroll which makes you fall asleep */ scr_info[S_SLEEP].oi_know = TRUE; no_command += rnd(SLEEPTIME) + 4; player.t_flags &= ~ISRUN; msg("you fall asleep"); when S_CREATE: /* * Create a monster: * First look in a circle around him, next try his room * otherwise give up */ i = 0; for (y = hero.y - 1; y <= hero.y + 1; y++) for (x = hero.x - 1; x <= hero.x + 1; x++) /* * Don't put a monster in top of the player. */ if (y == hero.y && x == hero.x) continue; /* * Or anything else nasty * Also avoid a xeroc which is disguised as scroll */ else if (moat(y, x) == NULL && step_ok(ch = winat(y, x))) { if (ch == SCROLL && find_obj(y, x)->o_which == S_SCARE) continue; else if (rnd(++i) == 0) { mp.y = y; mp.x = x; } } if (i == 0) msg("you hear a faint cry of anguish in the distance"); else { obj = new_item(); new_monster(obj, randmonster(FALSE), &mp); } when S_ID_POTION: case S_ID_SCROLL: case S_ID_WEAPON: case S_ID_ARMOR: case S_ID_R_OR_S: { int id_type[S_ID_R_OR_S + 1] = { 0, 0, 0, 0, 0, POTION, SCROLL, WEAPON, ARMOR, R_OR_S }; /* * Identify, let him figure something out */ scr_info[obj->o_which].oi_know = TRUE; msg("this scroll is an %s scroll", scr_info[obj->o_which].oi_name); whatis(TRUE, id_type[obj->o_which]); } when S_MAP: /* * Scroll of magic mapping. */ scr_info[S_MAP].oi_know = TRUE; msg("oh, now this scroll has a map on it"); /* * take all the things we want to keep hidden out of the window */ for (y = 1; y < NUMLINES - 1; y++) for (x = 0; x < NUMCOLS; x++) { pp = INDEX(y, x); switch (ch = pp->p_ch) { case DOOR: case STAIRS: break; case '-': case '|': if (!(pp->p_flags & F_REAL)) { ch = pp->p_ch = DOOR; pp->p_flags |= F_REAL; } break; case ' ': if (pp->p_flags & F_REAL) goto def; pp->p_flags |= F_REAL; ch = pp->p_ch = PASSAGE; /* FALLTHROUGH */ case PASSAGE: pass: if (!(pp->p_flags & F_REAL)) pp->p_ch = PASSAGE; pp->p_flags |= (F_SEEN|F_REAL); ch = PASSAGE; break; case FLOOR: if (pp->p_flags & F_REAL) ch = ' '; else { ch = TRAP; pp->p_ch = TRAP; pp->p_flags |= (F_SEEN|F_REAL); } break; default: def: if (pp->p_flags & F_PASS) goto pass; ch = ' '; break; } if (ch != ' ') { if ((obj = pp->p_monst) != NULL) obj->t_oldch = ch; if (obj == NULL || !on(player, SEEMONST)) mvaddch(y, x, ch); } } when S_FDET: /* * Potion of gold detection */ ch = FALSE; wclear(hw); for (obj = lvl_obj; obj != NULL; obj = next(obj)) if (obj->o_type == FOOD) { ch = TRUE; wmove(hw, obj->o_pos.y, obj->o_pos.x); waddch(hw, FOOD); } if (ch) { scr_info[S_FDET].oi_know = TRUE; show_win("Your nose tingles and you smell food.--More--"); } else msg("your nose tingles"); when S_TELEP: /* * Scroll of teleportation: * Make him dissapear and reappear */ { cur_room = proom; teleport(); if (cur_room != proom) scr_info[S_TELEP].oi_know = TRUE; } when S_ENCH: if (cur_weapon == NULL || cur_weapon->o_type != WEAPON) msg("you feel a strange sense of loss"); else { cur_weapon->o_flags &= ~ISCURSED; if (rnd(2) == 0) cur_weapon->o_hplus++; else cur_weapon->o_dplus++; msg("your %s glows %s for a moment", weap_info[cur_weapon->o_which].oi_name, pick_color("blue")); } when S_SCARE: /* * Reading it is a mistake and produces laughter at her * poor boo boo. */ msg("you hear maniacal laughter in the distance"); when S_REMOVE: uncurse(cur_armor); uncurse(cur_weapon); uncurse(cur_ring[LEFT]); uncurse(cur_ring[RIGHT]); msg(choose_str("you feel in touch with the Universal Onenes", "you feel as if somebody is watching over you")); when S_AGGR: /* * This scroll aggravates all the monsters on the current * level and sets them running towards the hero */ aggravate(); msg("you hear a high pitched humming noise"); when S_PROTECT: if (cur_armor != NULL) { cur_armor->o_flags |= ISPROT; msg("your armor is covered by a shimmering %s shield", pick_color("gold")); } else msg("you feel a strange sense of loss"); #ifdef MASTER otherwise: msg("what a puzzling scroll!"); return; #endif } obj = orig_obj; look(TRUE); /* put the result of the scroll on the screen */ status(); call_it(&scr_info[obj->o_which]); if (discardit) discard(obj); } /* * uncurse: * Uncurse an item */ void uncurse(THING *obj) { if (obj != NULL) obj->o_flags &= ~ISCURSED; }