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      1 /*	$NetBSD: zap.c,v 1.9 2008/01/14 03:50:03 dholland Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Timothy C. Stoehr.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 #ifndef lint
     37 #if 0
     38 static char sccsid[] = "@(#)zap.c	8.1 (Berkeley) 5/31/93";
     39 #else
     40 __RCSID("$NetBSD: zap.c,v 1.9 2008/01/14 03:50:03 dholland Exp $");
     41 #endif
     42 #endif /* not lint */
     43 
     44 /*
     45  * zap.c
     46  *
     47  * This source herein may be modified and/or distributed by anybody who
     48  * so desires, with the following restrictions:
     49  *    1.)  No portion of this notice shall be removed.
     50  *    2.)  Credit shall not be taken for the creation of this source.
     51  *    3.)  This code is not to be traded, sold, or used for personal
     52  *         gain or profit.
     53  *
     54  */
     55 
     56 #include "rogue.h"
     57 
     58 static object *get_zapped_monster(short, short *, short *);
     59 static void tele_away(object *);
     60 static void wdrain_life(object *);
     61 static void zap_monster(object *, unsigned short);
     62 
     63 boolean wizard = 0;
     64 
     65 void
     66 zapp(void)
     67 {
     68 	short wch;
     69 	boolean first_miss = 1;
     70 	object *wand;
     71 	short dir, d, row, col;
     72 	object *monster;
     73 
     74 	while (!is_direction(dir = rgetchar(), &d)) {
     75 		sound_bell();
     76 		if (first_miss) {
     77 			messagef(0, "direction? ");
     78 			first_miss = 0;
     79 		}
     80 	}
     81 	check_message();
     82 	if (dir == CANCEL) {
     83 		return;
     84 	}
     85 	if ((wch = pack_letter("zap with what?", WAND)) == CANCEL) {
     86 		return;
     87 	}
     88 	check_message();
     89 
     90 	if (!(wand = get_letter_object(wch))) {
     91 		messagef(0, "no such item.");
     92 		return;
     93 	}
     94 	if (wand->what_is != WAND) {
     95 		messagef(0, "you can't zap with that");
     96 		return;
     97 	}
     98 	if (wand->class <= 0) {
     99 		messagef(0, "nothing happens");
    100 	} else {
    101 		wand->class--;
    102 		row = rogue.row; col = rogue.col;
    103 		if ((wand->which_kind == COLD) || (wand->which_kind == FIRE)) {
    104 			bounce((short)wand->which_kind, d, row, col, 0);
    105 		} else {
    106 			monster = get_zapped_monster(d, &row, &col);
    107 			if (wand->which_kind == DRAIN_LIFE) {
    108 				wdrain_life(monster);
    109 			} else if (monster) {
    110 				wake_up(monster);
    111 				s_con_mon(monster);
    112 				zap_monster(monster, wand->which_kind);
    113 				relight();
    114 			}
    115 		}
    116 	}
    117 	(void)reg_move();
    118 }
    119 
    120 static object *
    121 get_zapped_monster(short dir, short *row, short *col)
    122 {
    123 	short orow, ocol;
    124 
    125 	for (;;) {
    126 		orow = *row; ocol = *col;
    127 		get_dir_rc(dir, row, col, 0);
    128 		if (((*row == orow) && (*col == ocol)) ||
    129 		   (dungeon[*row][*col] & (HORWALL | VERTWALL)) ||
    130 		   (dungeon[*row][*col] == NOTHING)) {
    131 			return(0);
    132 		}
    133 		if (dungeon[*row][*col] & MONSTER) {
    134 			if (!imitating(*row, *col)) {
    135 				return(object_at(&level_monsters, *row, *col));
    136 			}
    137 		}
    138 	}
    139 }
    140 
    141 static void
    142 zap_monster(object *monster, unsigned short kind)
    143 {
    144 	short row, col;
    145 	object *nm;
    146 	short tc;
    147 
    148 	row = monster->row;
    149 	col = monster->col;
    150 
    151 	switch(kind) {
    152 	case SLOW_MONSTER:
    153 		if (monster->m_flags & HASTED) {
    154 			monster->m_flags &= (~HASTED);
    155 		} else {
    156 			monster->slowed_toggle = 0;
    157 			monster->m_flags |= SLOWED;
    158 		}
    159 		break;
    160 	case HASTE_MONSTER:
    161 		if (monster->m_flags & SLOWED) {
    162 			monster->m_flags &= (~SLOWED);
    163 		} else {
    164 			monster->m_flags |= HASTED;
    165 		}
    166 		break;
    167 	case TELE_AWAY:
    168 		tele_away(monster);
    169 		break;
    170 	case INVISIBILITY:
    171 		monster->m_flags |= INVISIBLE;
    172 		break;
    173 	case POLYMORPH:
    174 		if (monster->m_flags & HOLDS) {
    175 			being_held = 0;
    176 		}
    177 		nm = monster->next_monster;
    178 		tc = monster->trail_char;
    179 		(void)gr_monster(monster, get_rand(0, MONSTERS-1));
    180 		monster->row = row;
    181 		monster->col = col;
    182 		monster->next_monster = nm;
    183 		monster->trail_char = tc;
    184 		if (!(monster->m_flags & IMITATES)) {
    185 			wake_up(monster);
    186 		}
    187 		break;
    188 	case MAGIC_MISSILE:
    189 		rogue_hit(monster, 1);
    190 		break;
    191 	case CANCELLATION:
    192 		if (monster->m_flags & HOLDS) {
    193 			being_held = 0;
    194 		}
    195 		if (monster->m_flags & STEALS_ITEM) {
    196 			monster->drop_percent = 0;
    197 		}
    198 		monster->m_flags &= (~(FLIES | FLITS | SPECIAL_HIT | INVISIBLE |
    199 			FLAMES | IMITATES | CONFUSES | SEEKS_GOLD | HOLDS));
    200 		break;
    201 	case DO_NOTHING:
    202 		messagef(0, "nothing happens");
    203 		break;
    204 	}
    205 }
    206 
    207 static void
    208 tele_away(object *monster)
    209 {
    210 	short row, col;
    211 
    212 	if (monster->m_flags & HOLDS) {
    213 		being_held = 0;
    214 	}
    215 	gr_row_col(&row, &col, (FLOOR | TUNNEL | STAIRS | OBJECT));
    216 	mvaddch(monster->row, monster->col, monster->trail_char);
    217 	dungeon[monster->row][monster->col] &= ~MONSTER;
    218 	monster->row = row; monster->col = col;
    219 	dungeon[row][col] |= MONSTER;
    220 	monster->trail_char = mvinch(row, col);
    221 	if (detect_monster || rogue_can_see(row, col)) {
    222 		mvaddch(row, col, gmc(monster));
    223 	}
    224 }
    225 
    226 void
    227 wizardize(void)
    228 {
    229 	char buf[100];
    230 
    231 	if (wizard) {
    232 		wizard = 0;
    233 		messagef(0, "not wizard anymore");
    234 	} else {
    235 		if (get_input_line("wizard's password:", "", buf, sizeof(buf),
    236 				"", 0, 0)) {
    237 			(void)xxx(1);
    238 			xxxx(buf, strlen(buf));
    239 			if (!strncmp(buf, "\247\104\126\272\115\243\027", 7)) {
    240 				wizard = 1;
    241 				score_only = 1;
    242 				messagef(0, "Welcome, mighty wizard!");
    243 			} else {
    244 				messagef(0, "sorry");
    245 			}
    246 		}
    247 	}
    248 }
    249 
    250 static void
    251 wdrain_life(object *monster)
    252 {
    253 	short hp;
    254 	object *lmon, *nm;
    255 
    256 	hp = rogue.hp_current / 3;
    257 	rogue.hp_current = (rogue.hp_current + 1) / 2;
    258 
    259 	if (cur_room >= 0) {
    260 		lmon = level_monsters.next_monster;
    261 		while (lmon) {
    262 			nm = lmon->next_monster;
    263 			if (get_room_number(lmon->row, lmon->col) == cur_room) {
    264 				wake_up(lmon);
    265 				(void)mon_damage(lmon, hp);
    266 			}
    267 			lmon = nm;
    268 		}
    269 	} else {
    270 		if (monster) {
    271 			wake_up(monster);
    272 			(void)mon_damage(monster, hp);
    273 		}
    274 	}
    275 	print_stats(STAT_HP);
    276 	relight();
    277 }
    278 
    279 void
    280 bounce(short ball, short dir, short row, short col, short r)
    281 {
    282 	short orow, ocol;
    283 	const char *s;
    284 	short i, ch, new_dir = -1, damage;
    285 	static short btime;
    286 
    287 	if (++r == 1) {
    288 		btime = get_rand(3, 6);
    289 	} else if (r > btime) {
    290 		return;
    291 	}
    292 
    293 	if (ball == FIRE) {
    294 		s = "fire";
    295 	} else {
    296 		s = "ice";
    297 	}
    298 	if (r > 1) {
    299 		messagef(0, "the %s bounces", s);
    300 	}
    301 	orow = row;
    302 	ocol = col;
    303 	do {
    304 		ch = mvinch(orow, ocol);
    305 		standout();
    306 		mvaddch(orow, ocol, ch);
    307 		get_dir_rc(dir, &orow, &ocol, 1);
    308 	} while (!(	(ocol <= 0) ||
    309 				(ocol >= DCOLS-1) ||
    310 				(dungeon[orow][ocol] == NOTHING) ||
    311 				(dungeon[orow][ocol] & MONSTER) ||
    312 				(dungeon[orow][ocol] & (HORWALL | VERTWALL)) ||
    313 				((orow == rogue.row) && (ocol == rogue.col))));
    314 	standend();
    315 	refresh();
    316 	do {
    317 		orow = row;
    318 		ocol = col;
    319 		ch = mvinch(row, col);
    320 		mvaddch(row, col, ch);
    321 		get_dir_rc(dir, &row, &col, 1);
    322 	} while (!(	(col <= 0) ||
    323 				(col >= DCOLS-1) ||
    324 				(dungeon[row][col] == NOTHING) ||
    325 				(dungeon[row][col] & MONSTER) ||
    326 				(dungeon[row][col] & (HORWALL | VERTWALL)) ||
    327 				((row == rogue.row) && (col == rogue.col))));
    328 
    329 	if (dungeon[row][col] & MONSTER) {
    330 		object *monster;
    331 
    332 		monster = object_at(&level_monsters, row, col);
    333 
    334 		wake_up(monster);
    335 		if (rand_percent(33)) {
    336 			messagef(0, "the %s misses the %s", s,
    337 				mon_name(monster));
    338 			goto ND;
    339 		}
    340 		if (ball == FIRE) {
    341 			if (!(monster->m_flags & RUSTS)) {
    342 				if (monster->m_flags & FREEZES) {
    343 					damage = monster->hp_to_kill;
    344 				} else if (monster->m_flags & FLAMES) {
    345 					damage = (monster->hp_to_kill / 10) + 1;
    346 				} else {
    347 					damage = get_rand((rogue.hp_current / 3), rogue.hp_max);
    348 				}
    349 			} else {
    350 				damage = (monster->hp_to_kill / 2) + 1;
    351 			}
    352 			messagef(0, "the %s hits the %s", s,
    353 				mon_name(monster));
    354 			(void)mon_damage(monster, damage);
    355 		} else {
    356 			damage = -1;
    357 			if (!(monster->m_flags & FREEZES)) {
    358 				if (rand_percent(33)) {
    359 					messagef(0, "the monster is frozen");
    360 					monster->m_flags |= (ASLEEP | NAPPING);
    361 					monster->nap_length = get_rand(3, 6);
    362 				} else {
    363 					damage = rogue.hp_current / 4;
    364 				}
    365 			} else {
    366 				damage = -2;
    367 			}
    368 			if (damage != -1) {
    369 				messagef(0, "the %s hits the %s", s,
    370 					mon_name(monster));
    371 				(void)mon_damage(monster, damage);
    372 			}
    373 		}
    374 	} else if ((row == rogue.row) && (col == rogue.col)) {
    375 		if (rand_percent(10 + (3 * get_armor_class(rogue.armor)))) {
    376 			messagef(0, "the %s misses", s);
    377 			goto ND;
    378 		} else {
    379 			damage = get_rand(3, (3 * rogue.exp));
    380 			if (ball == FIRE) {
    381 				damage = (damage * 3) / 2;
    382 				damage -= get_armor_class(rogue.armor);
    383 			}
    384 			rogue_damage(damage, NULL,
    385 					((ball == FIRE) ? KFIRE : HYPOTHERMIA));
    386 			messagef(0, "the %s hits", s);
    387 		}
    388 	} else {
    389 		short nrow, ncol;
    390 
    391 ND:		for (i = 0; i < 10; i++) {
    392 			dir = get_rand(0, DIRS-1);
    393 			nrow = orow;
    394 			ncol = ocol;
    395 			get_dir_rc(dir, &nrow, &ncol, 1);
    396 			if (((ncol >= 0) && (ncol <= DCOLS-1)) &&
    397 				(dungeon[nrow][ncol] != NOTHING) &&
    398 				(!(dungeon[nrow][ncol] & (VERTWALL | HORWALL)))) {
    399 				new_dir = dir;
    400 				break;
    401 			}
    402 		}
    403 		if (new_dir != -1) {
    404 			bounce(ball, new_dir, orow, ocol, r);
    405 		}
    406 	}
    407 }
    408