xref: /dragonfly/games/rogue/zap.c (revision d4ef6694) 
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. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  * @(#)zap.c	8.1 (Berkeley) 5/31/93
33  * $FreeBSD: src/games/rogue/zap.c,v 1.3 1999/11/30 03:49:29 billf Exp $
34  * $DragonFly: src/games/rogue/zap.c,v 1.3 2006/09/02 19:31:07 pavalos Exp $
35  */
36 
37 /*
38  * zap.c
39  *
40  * This source herein may be modified and/or distributed by anybody who
41  * so desires, with the following restrictions:
42  *    1.)  No portion of this notice shall be removed.
43  *    2.)  Credit shall not be taken for the creation of this source.
44  *    3.)  This code is not to be traded, sold, or used for personal
45  *         gain or profit.
46  *
47  */
48 
49 #include "rogue.h"
50 
51 static object *get_zapped_monster(short, short *, short *);
52 static void tele_away(object *);
53 static void wdrain_life(object *);
54 static void zap_monster(object *, unsigned short);
55 
56 boolean wizard = 0;
57 
58 extern boolean being_held, score_only, detect_monster;
59 extern short cur_room;
60 
61 void
62 zapp(void)
63 {
64 	short wch;
65 	boolean first_miss = 1;
66 	object *wand;
67 	short dir, d, row, col;
68 	object *monster;
69 
70 	while (!is_direction(dir = rgetchar(), &d)) {
71 		sound_bell();
72 		if (first_miss) {
73 			message("direction? ", 0);
74 			first_miss = 0;
75 		}
76 	}
77 	check_message();
78 	if (dir == CANCEL) {
79 		return;
80 	}
81 	if ((wch = pack_letter("zap with what?", WAND)) == CANCEL) {
82 		return;
83 	}
84 	check_message();
85 
86 	if (!(wand = get_letter_object(wch))) {
87 		message("no such item.", 0);
88 		return;
89 	}
90 	if (wand->what_is != WAND) {
91 		message("you can't zap with that", 0);
92 		return;
93 	}
94 	if (wand->class <= 0) {
95 		message("nothing happens", 0);
96 	} else {
97 		wand->class--;
98 		row = rogue.row; col = rogue.col;
99 		if ((wand->which_kind == COLD) || (wand->which_kind == FIRE)) {
100 			bounce((short)wand->which_kind, d, row, col, 0);
101 		} else {
102 			monster = get_zapped_monster(d, &row, &col);
103 			if (wand->which_kind == DRAIN_LIFE) {
104 				wdrain_life(monster);
105 			} else if (monster) {
106 				wake_up(monster);
107 				s_con_mon(monster);
108 				zap_monster(monster, wand->which_kind);
109 				relight();
110 			}
111 		}
112 	}
113 	reg_move();
114 }
115 
116 static object *
117 get_zapped_monster(short dir, short *row, short *col)
118 {
119 	short orow, ocol;
120 
121 	for (;;) {
122 		orow = *row; ocol = *col;
123 		get_dir_rc(dir, row, col, 0);
124 		if (((*row == orow) && (*col == ocol)) ||
125 		   (dungeon[*row][*col] & (HORWALL | VERTWALL)) ||
126 		   (dungeon[*row][*col] == NOTHING)) {
127 			return(0);
128 		}
129 		if (dungeon[*row][*col] & MONSTER) {
130 			if (!imitating(*row, *col)) {
131 				return(object_at(&level_monsters, *row, *col));
132 			}
133 		}
134 	}
135 }
136 
137 static void
138 zap_monster(object *monster, unsigned short kind)
139 {
140 	short row, col;
141 	object *nm;
142 	short tc;
143 
144 	row = monster->row;
145 	col = monster->col;
146 
147 	switch(kind) {
148 	case SLOW_MONSTER:
149 		if (monster->m_flags & HASTED) {
150 			monster->m_flags &= (~HASTED);
151 		} else {
152 			monster->slowed_toggle = 0;
153 			monster->m_flags |= SLOWED;
154 		}
155 		break;
156 	case HASTE_MONSTER:
157 		if (monster->m_flags & SLOWED) {
158 			monster->m_flags &= (~SLOWED);
159 		} else {
160 			monster->m_flags |= HASTED;
161 		}
162 		break;
163 	case TELE_AWAY:
164 		tele_away(monster);
165 		break;
166 	case INVISIBILITY:
167 		monster->m_flags |= INVISIBLE;
168 		break;
169 	case POLYMORPH:
170 		if (monster->m_flags & HOLDS) {
171 			being_held = 0;
172 		}
173 		nm = monster->next_monster;
174 		tc = monster->trail_char;
175 		gr_monster(monster, get_rand(0, MONSTERS-1));
176 		monster->row = row;
177 		monster->col = col;
178 		monster->next_monster = nm;
179 		monster->trail_char = tc;
180 		if (!(monster->m_flags & IMITATES)) {
181 			wake_up(monster);
182 		}
183 		break;
184 	case MAGIC_MISSILE:
185 		rogue_hit(monster, 1);
186 		break;
187 	case CANCELLATION:
188 		if (monster->m_flags & HOLDS) {
189 			being_held = 0;
190 		}
191 		if (monster->m_flags & STEALS_ITEM) {
192 			monster->drop_percent = 0;
193 		}
194 		monster->m_flags &= (~(FLIES | FLITS | SPECIAL_HIT | INVISIBLE |
195 			FLAMES | IMITATES | CONFUSES | SEEKS_GOLD | HOLDS));
196 		break;
197 	case DO_NOTHING:
198 		message("nothing happens", 0);
199 		break;
200 	}
201 }
202 
203 static void
204 tele_away(object *monster)
205 {
206 	short row, col;
207 
208 	if (monster->m_flags & HOLDS) {
209 		being_held = 0;
210 	}
211 	gr_row_col(&row, &col, (FLOOR | TUNNEL | STAIRS | OBJECT));
212 	mvaddch(monster->row, monster->col, monster->trail_char);
213 	dungeon[monster->row][monster->col] &= ~MONSTER;
214 	monster->row = row; monster->col = col;
215 	dungeon[row][col] |= MONSTER;
216 	monster->trail_char = mvinch(row, col);
217 	if (detect_monster || rogue_can_see(row, col)) {
218 		mvaddch(row, col, gmc(monster));
219 	}
220 }
221 
222 void
223 wizardize(void)
224 {
225 	char buf[100];
226 
227 	if (wizard) {
228 		wizard = 0;
229 		message("not wizard anymore", 0);
230 	} else {
231 		if (get_input_line("wizard's password:", "", buf, "", 0, 0)) {
232 			xxx(1);
233 			xxxx(buf, strlen(buf));
234 			if (!strncmp(buf, "\247\104\126\272\115\243\027", 7)) {
235 				wizard = 1;
236 				score_only = 1;
237 				message("Welcome, mighty wizard!", 0);
238 			} else {
239 				message("sorry", 0);
240 			}
241 		}
242 	}
243 }
244 
245 static void
246 wdrain_life(object *monster)
247 {
248 	short hp;
249 	object *lmon, *nm;
250 
251 	hp = rogue.hp_current / 3;
252 	rogue.hp_current = (rogue.hp_current + 1) / 2;
253 
254 	if (cur_room >= 0) {
255 		lmon = level_monsters.next_monster;
256 		while (lmon) {
257 			nm = lmon->next_monster;
258 			if (get_room_number(lmon->row, lmon->col) == cur_room) {
259 				wake_up(lmon);
260 				mon_damage(lmon, hp);
261 			}
262 			lmon = nm;
263 		}
264 	} else {
265 		if (monster) {
266 			wake_up(monster);
267 			mon_damage(monster, hp);
268 		}
269 	}
270 	print_stats(STAT_HP);
271 	relight();
272 }
273 
274 void
275 bounce(short ball, short dir, short row, short col, short r)
276 {
277 	short orow, ocol;
278 	char buf[DCOLS];
279 	const char *s;
280 	short i, ch, new_dir = -1, damage;
281 	static short btime;
282 
283 	if (++r == 1) {
284 		btime = get_rand(3, 6);
285 	} else if (r > btime) {
286 		return;
287 	}
288 
289 	if (ball == FIRE) {
290 		s = "fire";
291 	} else {
292 		s = "ice";
293 	}
294 	if (r > 1) {
295 		sprintf(buf, "the %s bounces", s);
296 		message(buf, 0);
297 	}
298 	orow = row;
299 	ocol = col;
300 	do {
301 		ch = mvinch(orow, ocol);
302 		standout();
303 		mvaddch(orow, ocol, ch);
304 		get_dir_rc(dir, &orow, &ocol, 1);
305 	} while (!(	(ocol <= 0) ||
306 				(ocol >= DCOLS-1) ||
307 				(dungeon[orow][ocol] == NOTHING) ||
308 				(dungeon[orow][ocol] & MONSTER) ||
309 				(dungeon[orow][ocol] & (HORWALL | VERTWALL)) ||
310 				((orow == rogue.row) && (ocol == rogue.col))));
311 	standend();
312 	refresh();
313 	do {
314 		orow = row;
315 		ocol = col;
316 		ch = mvinch(row, col);
317 		mvaddch(row, col, ch);
318 		get_dir_rc(dir, &row, &col, 1);
319 	} while (!(	(col <= 0) ||
320 				(col >= DCOLS-1) ||
321 				(dungeon[row][col] == NOTHING) ||
322 				(dungeon[row][col] & MONSTER) ||
323 				(dungeon[row][col] & (HORWALL | VERTWALL)) ||
324 				((row == rogue.row) && (col == rogue.col))));
325 
326 	if (dungeon[row][col] & MONSTER) {
327 		object *monster;
328 
329 		monster = object_at(&level_monsters, row, col);
330 
331 		wake_up(monster);
332 		if (rand_percent(33)) {
333 			sprintf(buf, "the %s misses the %s", s, mon_name(monster));
334 			message(buf, 0);
335 			goto ND;
336 		}
337 		if (ball == FIRE) {
338 			if (!(monster->m_flags & RUSTS)) {
339 				if (monster->m_flags & FREEZES) {
340 					damage = monster->hp_to_kill;
341 				} else if (monster->m_flags & FLAMES) {
342 					damage = (monster->hp_to_kill / 10) + 1;
343 				} else {
344 					damage = get_rand((rogue.hp_current / 3), rogue.hp_max);
345 				}
346 			} else {
347 				damage = (monster->hp_to_kill / 2) + 1;
348 			}
349 			sprintf(buf, "the %s hits the %s", s, mon_name(monster));
350 			message(buf, 0);
351 			mon_damage(monster, damage);
352 		} else {
353 			damage = -1;
354 			if (!(monster->m_flags & FREEZES)) {
355 				if (rand_percent(33)) {
356 					message("the monster is frozen", 0);
357 					monster->m_flags |= (ASLEEP | NAPPING);
358 					monster->nap_length = get_rand(3, 6);
359 				} else {
360 					damage = rogue.hp_current / 4;
361 				}
362 			} else {
363 				damage = -2;
364 			}
365 			if (damage != -1) {
366 				sprintf(buf, "the %s hits the %s", s, mon_name(monster));
367 				message(buf, 0);
368 				mon_damage(monster, damage);
369 			}
370 		}
371 	} else if ((row == rogue.row) && (col == rogue.col)) {
372 		if (rand_percent(10 + (3 * get_armor_class(rogue.armor)))) {
373 			sprintf(buf, "the %s misses", s);
374 			message(buf, 0);
375 			goto ND;
376 		} else {
377 			damage = get_rand(3, (3 * rogue.exp));
378 			if (ball == FIRE) {
379 				damage = (damage * 3) / 2;
380 				damage -= get_armor_class(rogue.armor);
381 			}
382 			sprintf(buf, "the %s hits", s);
383 			rogue_damage(damage, NULL,
384 					((ball == FIRE) ? KFIRE : HYPOTHERMIA));
385 			message(buf, 0);
386 		}
387 	} else {
388 		short nrow, ncol;
389 
390 ND:		for (i = 0; i < 10; i++) {
391 			dir = get_rand(0, DIRS-1);
392 			nrow = orow;
393 			ncol = ocol;
394 			get_dir_rc(dir, &nrow, &ncol, 1);
395 			if (((ncol >= 0) && (ncol <= DCOLS-1)) &&
396 				(dungeon[nrow][ncol] != NOTHING) &&
397 				(!(dungeon[nrow][ncol] & (VERTWALL | HORWALL)))) {
398 				new_dir = dir;
399 				break;
400 			}
401 		}
402 		if (new_dir != -1) {
403 			bounce(ball, new_dir, orow, ocol, r);
404 		}
405 	}
406 }
407