Home | History | Annotate | Line # | Download | only in rogue
pack.c revision 1.4 
      1 /*	$NetBSD: pack.c,v 1.4 1997/10/12 11:45:37 lukem 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. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 #ifndef lint
     41 #if 0
     42 static char sccsid[] = "@(#)pack.c	8.1 (Berkeley) 5/31/93";
     43 #else
     44 __RCSID("$NetBSD: pack.c,v 1.4 1997/10/12 11:45:37 lukem Exp $");
     45 #endif
     46 #endif /* not lint */
     47 
     48 /*
     49  * pack.c
     50  *
     51  * This source herein may be modified and/or distributed by anybody who
     52  * so desires, with the following restrictions:
     53  *    1.)  No portion of this notice shall be removed.
     54  *    2.)  Credit shall not be taken for the creation of this source.
     55  *    3.)  This code is not to be traded, sold, or used for personal
     56  *         gain or profit.
     57  *
     58  */
     59 
     60 #include "rogue.h"
     61 
     62 char *curse_message = "you can't, it appears to be cursed";
     63 
     64 object *
     65 add_to_pack(obj, pack, condense)
     66 	object *obj, *pack;
     67 {
     68 	object *op;
     69 
     70 	if (condense) {
     71 		if ((op = check_duplicate(obj, pack)) != NULL) {
     72 			free_object(obj);
     73 			return(op);
     74 		} else {
     75 			obj->ichar = next_avail_ichar();
     76 		}
     77 	}
     78 	if (pack->next_object == 0) {
     79 		pack->next_object = obj;
     80 	} else {
     81 		op = pack->next_object;
     82 
     83 		while (op->next_object) {
     84 			op = op->next_object;
     85 		}
     86 		op->next_object = obj;
     87 	}
     88 	obj->next_object = 0;
     89 	return(obj);
     90 }
     91 
     92 void
     93 take_from_pack(obj, pack)
     94 	object *obj, *pack;
     95 {
     96 	while (pack->next_object != obj) {
     97 		pack = pack->next_object;
     98 	}
     99 	pack->next_object = pack->next_object->next_object;
    100 }
    101 
    102 /* Note: *status is set to 0 if the rogue attempts to pick up a scroll
    103  * of scare-monster and it turns to dust.  *status is otherwise set to 1.
    104  */
    105 
    106 object *
    107 pick_up(row, col, status)
    108 	short *status;
    109 {
    110 	object *obj;
    111 
    112 	*status = 1;
    113 
    114 	if (levitate) {
    115 		message("you're floating in the air!", 0);
    116 		return((object *) 0);
    117 	}
    118 	obj = object_at(&level_objects, row, col);
    119 	if (!obj) {
    120 		message("pick_up(): inconsistent", 1);
    121 		return(obj);
    122 	}
    123 	if (	(obj->what_is == SCROL) &&
    124 			(obj->which_kind == SCARE_MONSTER) &&
    125 			obj->picked_up) {
    126 		message("the scroll turns to dust as you pick it up", 0);
    127 		dungeon[row][col] &= (~OBJECT);
    128 		vanish(obj, 0, &level_objects);
    129 		*status = 0;
    130 		if (id_scrolls[SCARE_MONSTER].id_status == UNIDENTIFIED) {
    131 			id_scrolls[SCARE_MONSTER].id_status = IDENTIFIED;
    132 		}
    133 		return((object *) 0);
    134 	}
    135 	if (obj->what_is == GOLD) {
    136 		rogue.gold += obj->quantity;
    137 		dungeon[row][col] &= ~(OBJECT);
    138 		take_from_pack(obj, &level_objects);
    139 		print_stats(STAT_GOLD);
    140 		return(obj);	/* obj will be free_object()ed in caller */
    141 	}
    142 	if (pack_count(obj) >= MAX_PACK_COUNT) {
    143 		message("pack too full", 1);
    144 		return((object *) 0);
    145 	}
    146 	dungeon[row][col] &= ~(OBJECT);
    147 	take_from_pack(obj, &level_objects);
    148 	obj = add_to_pack(obj, &rogue.pack, 1);
    149 	obj->picked_up = 1;
    150 	return(obj);
    151 }
    152 
    153 void
    154 drop()
    155 {
    156 	object *obj, *new;
    157 	short ch;
    158 	char desc[DCOLS];
    159 
    160 	if (dungeon[rogue.row][rogue.col] & (OBJECT | STAIRS | TRAP)) {
    161 		message("there's already something there", 0);
    162 		return;
    163 	}
    164 	if (!rogue.pack.next_object) {
    165 		message("you have nothing to drop", 0);
    166 		return;
    167 	}
    168 	if ((ch = pack_letter("drop what?", ALL_OBJECTS)) == CANCEL) {
    169 		return;
    170 	}
    171 	if (!(obj = get_letter_object(ch))) {
    172 		message("no such item.", 0);
    173 		return;
    174 	}
    175 	if (obj->in_use_flags & BEING_WIELDED) {
    176 		if (obj->is_cursed) {
    177 			message(curse_message, 0);
    178 			return;
    179 		}
    180 		unwield(rogue.weapon);
    181 	} else if (obj->in_use_flags & BEING_WORN) {
    182 		if (obj->is_cursed) {
    183 			message(curse_message, 0);
    184 			return;
    185 		}
    186 		mv_aquatars();
    187 		unwear(rogue.armor);
    188 		print_stats(STAT_ARMOR);
    189 	} else if (obj->in_use_flags & ON_EITHER_HAND) {
    190 		if (obj->is_cursed) {
    191 			message(curse_message, 0);
    192 			return;
    193 		}
    194 		un_put_on(obj);
    195 	}
    196 	obj->row = rogue.row;
    197 	obj->col = rogue.col;
    198 
    199 	if ((obj->quantity > 1) && (obj->what_is != WEAPON)) {
    200 		obj->quantity--;
    201 		new = alloc_object();
    202 		*new = *obj;
    203 		new->quantity = 1;
    204 		obj = new;
    205 	} else {
    206 		obj->ichar = 'L';
    207 		take_from_pack(obj, &rogue.pack);
    208 	}
    209 	place_at(obj, rogue.row, rogue.col);
    210 	(void) strcpy(desc, "dropped ");
    211 	get_desc(obj, desc+8);
    212 	message(desc, 0);
    213 	(void) reg_move();
    214 }
    215 
    216 object *
    217 check_duplicate(obj, pack)
    218 	object *obj, *pack;
    219 {
    220 	object *op;
    221 
    222 	if (!(obj->what_is & (WEAPON | FOOD | SCROL | POTION))) {
    223 		return(0);
    224 	}
    225 	if ((obj->what_is == FOOD) && (obj->which_kind == FRUIT)) {
    226 		return(0);
    227 	}
    228 	op = pack->next_object;
    229 
    230 	while (op) {
    231 		if ((op->what_is == obj->what_is) &&
    232 			(op->which_kind == obj->which_kind)) {
    233 
    234 			if ((obj->what_is != WEAPON) ||
    235 			((obj->what_is == WEAPON) &&
    236 			((obj->which_kind == ARROW) ||
    237 			(obj->which_kind == DAGGER) ||
    238 			(obj->which_kind == DART) ||
    239 			(obj->which_kind == SHURIKEN)) &&
    240 			(obj->quiver == op->quiver))) {
    241 				op->quantity += obj->quantity;
    242 				return(op);
    243 			}
    244 		}
    245 		op = op->next_object;
    246 	}
    247 	return(0);
    248 }
    249 
    250 short
    251 next_avail_ichar()
    252 {
    253 	object *obj;
    254 	int i;
    255 	boolean ichars[26];
    256 
    257 	for (i = 0; i < 26; i++) {
    258 		ichars[i] = 0;
    259 	}
    260 	obj = rogue.pack.next_object;
    261 	while (obj) {
    262 		ichars[(obj->ichar - 'a')] = 1;
    263 		obj = obj->next_object;
    264 	}
    265 	for (i = 0; i < 26; i++) {
    266 		if (!ichars[i]) {
    267 			return(i + 'a');
    268 		}
    269 	}
    270 	return('?');
    271 }
    272 
    273 void
    274 wait_for_ack()
    275 {
    276 	while (rgetchar() != ' ') ;
    277 }
    278 
    279 short
    280 pack_letter(prompt, mask)
    281 	char *prompt;
    282 	unsigned short mask;
    283 {
    284 	short ch;
    285 	unsigned short tmask = mask;
    286 
    287 	if (!mask_pack(&rogue.pack, mask)) {
    288 		message("nothing appropriate", 0);
    289 		return(CANCEL);
    290 	}
    291 	for (;;) {
    292 
    293 		message(prompt, 0);
    294 
    295 		for (;;) {
    296 			ch = rgetchar();
    297 			if (!is_pack_letter(&ch, &mask)) {
    298 				sound_bell();
    299 			} else {
    300 				break;
    301 			}
    302 		}
    303 
    304 		if (ch == LIST) {
    305 			check_message();
    306 			mask = tmask;
    307 			inventory(&rogue.pack, mask);
    308 		} else {
    309 			break;
    310 		}
    311 		mask = tmask;
    312 	}
    313 	check_message();
    314 	return(ch);
    315 }
    316 
    317 void
    318 take_off()
    319 {
    320 	char desc[DCOLS];
    321 	object *obj;
    322 
    323 	if (rogue.armor) {
    324 		if (rogue.armor->is_cursed) {
    325 			message(curse_message, 0);
    326 		} else {
    327 			mv_aquatars();
    328 			obj = rogue.armor;
    329 			unwear(rogue.armor);
    330 			(void) strcpy(desc, "was wearing ");
    331 			get_desc(obj, desc+12);
    332 			message(desc, 0);
    333 			print_stats(STAT_ARMOR);
    334 			(void) reg_move();
    335 		}
    336 	} else {
    337 		message("not wearing any", 0);
    338 	}
    339 }
    340 
    341 void
    342 wear()
    343 {
    344 	short ch;
    345 	object *obj;
    346 	char desc[DCOLS];
    347 
    348 	if (rogue.armor) {
    349 		message("your already wearing some", 0);
    350 		return;
    351 	}
    352 	ch = pack_letter("wear what?", ARMOR);
    353 
    354 	if (ch == CANCEL) {
    355 		return;
    356 	}
    357 	if (!(obj = get_letter_object(ch))) {
    358 		message("no such item.", 0);
    359 		return;
    360 	}
    361 	if (obj->what_is != ARMOR) {
    362 		message("you can't wear that", 0);
    363 		return;
    364 	}
    365 	obj->identified = 1;
    366 	(void) strcpy(desc, "wearing ");
    367 	get_desc(obj, desc + 8);
    368 	message(desc, 0);
    369 	do_wear(obj);
    370 	print_stats(STAT_ARMOR);
    371 	(void) reg_move();
    372 }
    373 
    374 void
    375 unwear(obj)
    376 	object *obj;
    377 {
    378 	if (obj) {
    379 		obj->in_use_flags &= (~BEING_WORN);
    380 	}
    381 	rogue.armor = (object *) 0;
    382 }
    383 
    384 void
    385 do_wear(obj)
    386 	object *obj;
    387 {
    388 	rogue.armor = obj;
    389 	obj->in_use_flags |= BEING_WORN;
    390 	obj->identified = 1;
    391 }
    392 
    393 void
    394 wield()
    395 {
    396 	short ch;
    397 	object *obj;
    398 	char desc[DCOLS];
    399 
    400 	if (rogue.weapon && rogue.weapon->is_cursed) {
    401 		message(curse_message, 0);
    402 		return;
    403 	}
    404 	ch = pack_letter("wield what?", WEAPON);
    405 
    406 	if (ch == CANCEL) {
    407 		return;
    408 	}
    409 	if (!(obj = get_letter_object(ch))) {
    410 		message("No such item.", 0);
    411 		return;
    412 	}
    413 	if (obj->what_is & (ARMOR | RING)) {
    414 		sprintf(desc, "you can't wield %s",
    415 			((obj->what_is == ARMOR) ? "armor" : "rings"));
    416 		message(desc, 0);
    417 		return;
    418 	}
    419 	if (obj->in_use_flags & BEING_WIELDED) {
    420 		message("in use", 0);
    421 	} else {
    422 		unwield(rogue.weapon);
    423 		(void) strcpy(desc, "wielding ");
    424 		get_desc(obj, desc + 9);
    425 		message(desc, 0);
    426 		do_wield(obj);
    427 		(void) reg_move();
    428 	}
    429 }
    430 
    431 void
    432 do_wield(obj)
    433 	object *obj;
    434 {
    435 	rogue.weapon = obj;
    436 	obj->in_use_flags |= BEING_WIELDED;
    437 }
    438 
    439 void
    440 unwield(obj)
    441 	object *obj;
    442 {
    443 	if (obj) {
    444 		obj->in_use_flags &= (~BEING_WIELDED);
    445 	}
    446 	rogue.weapon = (object *) 0;
    447 }
    448 
    449 void
    450 call_it()
    451 {
    452 	short ch;
    453 	object *obj;
    454 	struct id *id_table;
    455 	char buf[MAX_TITLE_LENGTH+2];
    456 
    457 	ch = pack_letter("call what?", (SCROL | POTION | WAND | RING));
    458 
    459 	if (ch == CANCEL) {
    460 		return;
    461 	}
    462 	if (!(obj = get_letter_object(ch))) {
    463 		message("no such item.", 0);
    464 		return;
    465 	}
    466 	if (!(obj->what_is & (SCROL | POTION | WAND | RING))) {
    467 		message("surely you already know what that's called", 0);
    468 		return;
    469 	}
    470 	id_table = get_id_table(obj);
    471 
    472 	if (get_input_line("call it:","",buf,id_table[obj->which_kind].title,1,1)) {
    473 		id_table[obj->which_kind].id_status = CALLED;
    474 		(void) strcpy(id_table[obj->which_kind].title, buf);
    475 	}
    476 }
    477 
    478 short
    479 pack_count(new_obj)
    480 	object *new_obj;
    481 {
    482 	object *obj;
    483 	short count = 0;
    484 
    485 	obj = rogue.pack.next_object;
    486 
    487 	while (obj) {
    488 		if (obj->what_is != WEAPON) {
    489 			count += obj->quantity;
    490 		} else if (!new_obj) {
    491 			count++;
    492 		} else if ((new_obj->what_is != WEAPON) ||
    493 			((obj->which_kind != ARROW) &&
    494 			(obj->which_kind != DAGGER) &&
    495 			(obj->which_kind != DART) &&
    496 			(obj->which_kind != SHURIKEN)) ||
    497 			(new_obj->which_kind != obj->which_kind) ||
    498 			(obj->quiver != new_obj->quiver)) {
    499 			count++;
    500 		}
    501 		obj = obj->next_object;
    502 	}
    503 	return(count);
    504 }
    505 
    506 boolean
    507 mask_pack(pack, mask)
    508 	object *pack;
    509 	unsigned short mask;
    510 {
    511 	while (pack->next_object) {
    512 		pack = pack->next_object;
    513 		if (pack->what_is & mask) {
    514 			return(1);
    515 		}
    516 	}
    517 	return(0);
    518 }
    519 
    520 boolean
    521 is_pack_letter(c, mask)
    522 	short *c;
    523 	unsigned short *mask;
    524 {
    525 	if (((*c == '?') || (*c == '!') || (*c == ':') || (*c == '=') ||
    526 		(*c == ')') || (*c == ']') || (*c == '/') || (*c == ','))) {
    527 		switch(*c) {
    528 		case '?':
    529 			*mask = SCROL;
    530 			break;
    531 		case '!':
    532 			*mask = POTION;
    533 			break;
    534 		case ':':
    535 			*mask = FOOD;
    536 			break;
    537 		case ')':
    538 			*mask = WEAPON;
    539 			break;
    540 		case ']':
    541 			*mask = ARMOR;
    542 			break;
    543 		case '/':
    544 			*mask = WAND;
    545 			break;
    546 		case '=':
    547 			*mask = RING;
    548 			break;
    549 		case ',':
    550 			*mask = AMULET;
    551 			break;
    552 		}
    553 		*c = LIST;
    554 		return(1);
    555 	}
    556 	return(((*c >= 'a') && (*c <= 'z')) || (*c == CANCEL) || (*c == LIST));
    557 }
    558 
    559 boolean
    560 has_amulet()
    561 {
    562 	return(mask_pack(&rogue.pack, AMULET));
    563 }
    564 
    565 void
    566 kick_into_pack()
    567 {
    568 	object *obj;
    569 	char desc[DCOLS];
    570 	short n, stat;
    571 
    572 	if (!(dungeon[rogue.row][rogue.col] & OBJECT)) {
    573 		message("nothing here", 0);
    574 	} else {
    575 		if ((obj = pick_up(rogue.row, rogue.col, &stat)) != NULL) {
    576 			get_desc(obj, desc);
    577 			if (obj->what_is == GOLD) {
    578 				message(desc, 0);
    579 				free_object(obj);
    580 			} else {
    581 				n = strlen(desc);
    582 				desc[n] = '(';
    583 				desc[n+1] = obj->ichar;
    584 				desc[n+2] = ')';
    585 				desc[n+3] = 0;
    586 				message(desc, 0);
    587 			}
    588 		}
    589 		if (obj || (!stat)) {
    590 			(void) reg_move();
    591 		}
    592 	}
    593 }
    594