xref: /dragonfly/games/rogue/zap.c (revision 8e1c6f81) 
1 /*
2  * Copyright (c) 1988, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * This code is derived from software contributed to Berkeley by
6  * Timothy C. Stoehr.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. All advertising materials mentioning features or use of this software
17  *    must display the following acknowledgement:
18  *	This product includes software developed by the University of
19  *	California, Berkeley and its contributors.
20  * 4. Neither the name of the University nor the names of its contributors
21  *    may be used to endorse or promote products derived from this software
22  *    without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  *
36  * @(#)zap.c	8.1 (Berkeley) 5/31/93
37  * $FreeBSD: src/games/rogue/zap.c,v 1.3 1999/11/30 03:49:29 billf Exp $
38  * $DragonFly: src/games/rogue/zap.c,v 1.3 2006/09/02 19:31:07 pavalos Exp $
39  */
40 
41 /*
42  * zap.c
43  *
44  * This source herein may be modified and/or distributed by anybody who
45  * so desires, with the following restrictions:
46  *    1.)  No portion of this notice shall be removed.
47  *    2.)  Credit shall not be taken for the creation of this source.
48  *    3.)  This code is not to be traded, sold, or used for personal
49  *         gain or profit.
50  *
51  */
52 
53 #include "rogue.h"
54 
55 boolean wizard = 0;
56 
57 extern boolean being_held, score_only, detect_monster;
58 extern short cur_room;
59 
60 static object	*get_zapped_monster(short, short *, short *);
61 static void	zap_monster(object *, unsigned short);
62 static void	tele_away(object *);
63 static void	wdrain_life(object *);
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 			message("direction? ", 0);
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 		message("no such item.", 0);
92 		return;
93 	}
94 	if (wand->what_is != WAND) {
95 		message("you can't zap with that", 0);
96 		return;
97 	}
98 	if (wand->class <= 0) {
99 		message("nothing happens", 0);
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 	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 		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 		message("nothing happens", 0);
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 		message("not wizard anymore", 0);
234 	} else {
235 		if (get_input_line("wizard's password:", "", buf, "", 0, 0)) {
236 			xxx(1);
237 			xxxx(buf, strlen(buf));
238 			if (!strncmp(buf, "\247\104\126\272\115\243\027", 7)) {
239 				wizard = 1;
240 				score_only = 1;
241 				message("Welcome, mighty wizard!", 0);
242 			} else {
243 				message("sorry", 0);
244 			}
245 		}
246 	}
247 }
248 
249 static void
250 wdrain_life(object *monster)
251 {
252 	short hp;
253 	object *lmon, *nm;
254 
255 	hp = rogue.hp_current / 3;
256 	rogue.hp_current = (rogue.hp_current + 1) / 2;
257 
258 	if (cur_room >= 0) {
259 		lmon = level_monsters.next_monster;
260 		while (lmon) {
261 			nm = lmon->next_monster;
262 			if (get_room_number(lmon->row, lmon->col) == cur_room) {
263 				wake_up(lmon);
264 				mon_damage(lmon, hp);
265 			}
266 			lmon = nm;
267 		}
268 	} else {
269 		if (monster) {
270 			wake_up(monster);
271 			mon_damage(monster, hp);
272 		}
273 	}
274 	print_stats(STAT_HP);
275 	relight();
276 }
277 
278 void
279 bounce(short ball, short dir, short row, short col, short r)
280 {
281 	short orow, ocol;
282 	char buf[DCOLS];
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 		sprintf(buf, "the %s bounces", s);
300 		message(buf, 0);
301 	}
302 	orow = row;
303 	ocol = col;
304 	do {
305 		ch = mvinch(orow, ocol);
306 		standout();
307 		mvaddch(orow, ocol, ch);
308 		get_dir_rc(dir, &orow, &ocol, 1);
309 	} while (!(	(ocol <= 0) ||
310 				(ocol >= DCOLS-1) ||
311 				(dungeon[orow][ocol] == NOTHING) ||
312 				(dungeon[orow][ocol] & MONSTER) ||
313 				(dungeon[orow][ocol] & (HORWALL | VERTWALL)) ||
314 				((orow == rogue.row) && (ocol == rogue.col))));
315 	standend();
316 	refresh();
317 	do {
318 		orow = row;
319 		ocol = col;
320 		ch = mvinch(row, col);
321 		mvaddch(row, col, ch);
322 		get_dir_rc(dir, &row, &col, 1);
323 	} while (!(	(col <= 0) ||
324 				(col >= DCOLS-1) ||
325 				(dungeon[row][col] == NOTHING) ||
326 				(dungeon[row][col] & MONSTER) ||
327 				(dungeon[row][col] & (HORWALL | VERTWALL)) ||
328 				((row == rogue.row) && (col == rogue.col))));
329 
330 	if (dungeon[row][col] & MONSTER) {
331 		object *monster;
332 
333 		monster = object_at(&level_monsters, row, col);
334 
335 		wake_up(monster);
336 		if (rand_percent(33)) {
337 			sprintf(buf, "the %s misses the %s", s, mon_name(monster));
338 			message(buf, 0);
339 			goto ND;
340 		}
341 		if (ball == FIRE) {
342 			if (!(monster->m_flags & RUSTS)) {
343 				if (monster->m_flags & FREEZES) {
344 					damage = monster->hp_to_kill;
345 				} else if (monster->m_flags & FLAMES) {
346 					damage = (monster->hp_to_kill / 10) + 1;
347 				} else {
348 					damage = get_rand((rogue.hp_current / 3), rogue.hp_max);
349 				}
350 			} else {
351 				damage = (monster->hp_to_kill / 2) + 1;
352 			}
353 			sprintf(buf, "the %s hits the %s", s, mon_name(monster));
354 			message(buf, 0);
355 			mon_damage(monster, damage);
356 		} else {
357 			damage = -1;
358 			if (!(monster->m_flags & FREEZES)) {
359 				if (rand_percent(33)) {
360 					message("the monster is frozen", 0);
361 					monster->m_flags |= (ASLEEP | NAPPING);
362 					monster->nap_length = get_rand(3, 6);
363 				} else {
364 					damage = rogue.hp_current / 4;
365 				}
366 			} else {
367 				damage = -2;
368 			}
369 			if (damage != -1) {
370 				sprintf(buf, "the %s hits the %s", s, mon_name(monster));
371 				message(buf, 0);
372 				mon_damage(monster, damage);
373 			}
374 		}
375 	} else if ((row == rogue.row) && (col == rogue.col)) {
376 		if (rand_percent(10 + (3 * get_armor_class(rogue.armor)))) {
377 			sprintf(buf, "the %s misses", s);
378 			message(buf, 0);
379 			goto ND;
380 		} else {
381 			damage = get_rand(3, (3 * rogue.exp));
382 			if (ball == FIRE) {
383 				damage = (damage * 3) / 2;
384 				damage -= get_armor_class(rogue.armor);
385 			}
386 			sprintf(buf, "the %s hits", s);
387 			rogue_damage(damage, (object *) 0,
388 					((ball == FIRE) ? KFIRE : HYPOTHERMIA));
389 			message(buf, 0);
390 		}
391 	} else {
392 		short nrow, ncol;
393 
394 ND:		for (i = 0; i < 10; i++) {
395 			dir = get_rand(0, DIRS-1);
396 			nrow = orow;
397 			ncol = ocol;
398 			get_dir_rc(dir, &nrow, &ncol, 1);
399 			if (((ncol >= 0) && (ncol <= DCOLS-1)) &&
400 				(dungeon[nrow][ncol] != NOTHING) &&
401 				(!(dungeon[nrow][ncol] & (VERTWALL | HORWALL)))) {
402 				new_dir = dir;
403 				break;
404 			}
405 		}
406 		if (new_dir != -1) {
407 			bounce(ball, new_dir, orow, ocol, r);
408 		}
409 	}
410 }
411