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pack.c revision 1.5 
      1 /*	$NetBSD: pack.c,v 1.5 1998/09/11 14:10:39 hubertf 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 1.5 1998/09/11 14:10:39 hubertf 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 	int condense;
     68 {
     69 	object *op;
     70 
     71 	if (condense) {
     72 		if ((op = check_duplicate(obj, pack)) != NULL) {
     73 			free_object(obj);
     74 			return(op);
     75 		} else {
     76 			obj->ichar = next_avail_ichar();
     77 		}
     78 	}
     79 	if (pack->next_object == 0) {
     80 		pack->next_object = obj;
     81 	} else {
     82 		op = pack->next_object;
     83 
     84 		while (op->next_object) {
     85 			op = op->next_object;
     86 		}
     87 		op->next_object = obj;
     88 	}
     89 	obj->next_object = 0;
     90 	return(obj);
     91 }
     92 
     93 void
     94 take_from_pack(obj, pack)
     95 	object *obj, *pack;
     96 {
     97 	while (pack->next_object != obj) {
     98 		pack = pack->next_object;
     99 	}
    100 	pack->next_object = pack->next_object->next_object;
    101 }
    102 
    103 /* Note: *status is set to 0 if the rogue attempts to pick up a scroll
    104  * of scare-monster and it turns to dust.  *status is otherwise set to 1.
    105  */
    106 
    107 object *
    108 pick_up(row, col, status)
    109 	short *status;
    110 	int row, col;
    111 {
    112 	object *obj;
    113 
    114 	*status = 1;
    115 
    116 	if (levitate) {
    117 		message("you're floating in the air!", 0);
    118 		return((object *) 0);
    119 	}
    120 	obj = object_at(&level_objects, row, col);
    121 	if (!obj) {
    122 		message("pick_up(): inconsistent", 1);
    123 		return(obj);
    124 	}
    125 	if (	(obj->what_is == SCROL) &&
    126 			(obj->which_kind == SCARE_MONSTER) &&
    127 			obj->picked_up) {
    128 		message("the scroll turns to dust as you pick it up", 0);
    129 		dungeon[row][col] &= (~OBJECT);
    130 		vanish(obj, 0, &level_objects);
    131 		*status = 0;
    132 		if (id_scrolls[SCARE_MONSTER].id_status == UNIDENTIFIED) {
    133 			id_scrolls[SCARE_MONSTER].id_status = IDENTIFIED;
    134 		}
    135 		return((object *) 0);
    136 	}
    137 	if (obj->what_is == GOLD) {
    138 		rogue.gold += obj->quantity;
    139 		dungeon[row][col] &= ~(OBJECT);
    140 		take_from_pack(obj, &level_objects);
    141 		print_stats(STAT_GOLD);
    142 		return(obj);	/* obj will be free_object()ed in caller */
    143 	}
    144 	if (pack_count(obj) >= MAX_PACK_COUNT) {
    145 		message("pack too full", 1);
    146 		return((object *) 0);
    147 	}
    148 	dungeon[row][col] &= ~(OBJECT);
    149 	take_from_pack(obj, &level_objects);
    150 	obj = add_to_pack(obj, &rogue.pack, 1);
    151 	obj->picked_up = 1;
    152 	return(obj);
    153 }
    154 
    155 void
    156 drop()
    157 {
    158 	object *obj, *new;
    159 	short ch;
    160 	char desc[DCOLS];
    161 
    162 	if (dungeon[rogue.row][rogue.col] & (OBJECT | STAIRS | TRAP)) {
    163 		message("there's already something there", 0);
    164 		return;
    165 	}
    166 	if (!rogue.pack.next_object) {
    167 		message("you have nothing to drop", 0);
    168 		return;
    169 	}
    170 	if ((ch = pack_letter("drop what?", ALL_OBJECTS)) == CANCEL) {
    171 		return;
    172 	}
    173 	if (!(obj = get_letter_object(ch))) {
    174 		message("no such item.", 0);
    175 		return;
    176 	}
    177 	if (obj->in_use_flags & BEING_WIELDED) {
    178 		if (obj->is_cursed) {
    179 			message(curse_message, 0);
    180 			return;
    181 		}
    182 		unwield(rogue.weapon);
    183 	} else if (obj->in_use_flags & BEING_WORN) {
    184 		if (obj->is_cursed) {
    185 			message(curse_message, 0);
    186 			return;
    187 		}
    188 		mv_aquatars();
    189 		unwear(rogue.armor);
    190 		print_stats(STAT_ARMOR);
    191 	} else if (obj->in_use_flags & ON_EITHER_HAND) {
    192 		if (obj->is_cursed) {
    193 			message(curse_message, 0);
    194 			return;
    195 		}
    196 		un_put_on(obj);
    197 	}
    198 	obj->row = rogue.row;
    199 	obj->col = rogue.col;
    200 
    201 	if ((obj->quantity > 1) && (obj->what_is != WEAPON)) {
    202 		obj->quantity--;
    203 		new = alloc_object();
    204 		*new = *obj;
    205 		new->quantity = 1;
    206 		obj = new;
    207 	} else {
    208 		obj->ichar = 'L';
    209 		take_from_pack(obj, &rogue.pack);
    210 	}
    211 	place_at(obj, rogue.row, rogue.col);
    212 	(void) strcpy(desc, "dropped ");
    213 	get_desc(obj, desc+8);
    214 	message(desc, 0);
    215 	(void) reg_move();
    216 }
    217 
    218 object *
    219 check_duplicate(obj, pack)
    220 	object *obj, *pack;
    221 {
    222 	object *op;
    223 
    224 	if (!(obj->what_is & (WEAPON | FOOD | SCROL | POTION))) {
    225 		return(0);
    226 	}
    227 	if ((obj->what_is == FOOD) && (obj->which_kind == FRUIT)) {
    228 		return(0);
    229 	}
    230 	op = pack->next_object;
    231 
    232 	while (op) {
    233 		if ((op->what_is == obj->what_is) &&
    234 			(op->which_kind == obj->which_kind)) {
    235 
    236 			if ((obj->what_is != WEAPON) ||
    237 			((obj->what_is == WEAPON) &&
    238 			((obj->which_kind == ARROW) ||
    239 			(obj->which_kind == DAGGER) ||
    240 			(obj->which_kind == DART) ||
    241 			(obj->which_kind == SHURIKEN)) &&
    242 			(obj->quiver == op->quiver))) {
    243 				op->quantity += obj->quantity;
    244 				return(op);
    245 			}
    246 		}
    247 		op = op->next_object;
    248 	}
    249 	return(0);
    250 }
    251 
    252 short
    253 next_avail_ichar()
    254 {
    255 	object *obj;
    256 	int i;
    257 	boolean ichars[26];
    258 
    259 	for (i = 0; i < 26; i++) {
    260 		ichars[i] = 0;
    261 	}
    262 	obj = rogue.pack.next_object;
    263 	while (obj) {
    264 		ichars[(obj->ichar - 'a')] = 1;
    265 		obj = obj->next_object;
    266 	}
    267 	for (i = 0; i < 26; i++) {
    268 		if (!ichars[i]) {
    269 			return(i + 'a');
    270 		}
    271 	}
    272 	return('?');
    273 }
    274 
    275 void
    276 wait_for_ack()
    277 {
    278 	while (rgetchar() != ' ') ;
    279 }
    280 
    281 short
    282 pack_letter(prompt, mask)
    283 	char *prompt;
    284 	unsigned short mask;
    285 {
    286 	short ch;
    287 	unsigned short tmask = mask;
    288 
    289 	if (!mask_pack(&rogue.pack, mask)) {
    290 		message("nothing appropriate", 0);
    291 		return(CANCEL);
    292 	}
    293 	for (;;) {
    294 
    295 		message(prompt, 0);
    296 
    297 		for (;;) {
    298 			ch = rgetchar();
    299 			if (!is_pack_letter(&ch, &mask)) {
    300 				sound_bell();
    301 			} else {
    302 				break;
    303 			}
    304 		}
    305 
    306 		if (ch == LIST) {
    307 			check_message();
    308 			mask = tmask;
    309 			inventory(&rogue.pack, mask);
    310 		} else {
    311 			break;
    312 		}
    313 		mask = tmask;
    314 	}
    315 	check_message();
    316 	return(ch);
    317 }
    318 
    319 void
    320 take_off()
    321 {
    322 	char desc[DCOLS];
    323 	object *obj;
    324 
    325 	if (rogue.armor) {
    326 		if (rogue.armor->is_cursed) {
    327 			message(curse_message, 0);
    328 		} else {
    329 			mv_aquatars();
    330 			obj = rogue.armor;
    331 			unwear(rogue.armor);
    332 			(void) strcpy(desc, "was wearing ");
    333 			get_desc(obj, desc+12);
    334 			message(desc, 0);
    335 			print_stats(STAT_ARMOR);
    336 			(void) reg_move();
    337 		}
    338 	} else {
    339 		message("not wearing any", 0);
    340 	}
    341 }
    342 
    343 void
    344 wear()
    345 {
    346 	short ch;
    347 	object *obj;
    348 	char desc[DCOLS];
    349 
    350 	if (rogue.armor) {
    351 		message("your already wearing some", 0);
    352 		return;
    353 	}
    354 	ch = pack_letter("wear what?", ARMOR);
    355 
    356 	if (ch == CANCEL) {
    357 		return;
    358 	}
    359 	if (!(obj = get_letter_object(ch))) {
    360 		message("no such item.", 0);
    361 		return;
    362 	}
    363 	if (obj->what_is != ARMOR) {
    364 		message("you can't wear that", 0);
    365 		return;
    366 	}
    367 	obj->identified = 1;
    368 	(void) strcpy(desc, "wearing ");
    369 	get_desc(obj, desc + 8);
    370 	message(desc, 0);
    371 	do_wear(obj);
    372 	print_stats(STAT_ARMOR);
    373 	(void) reg_move();
    374 }
    375 
    376 void
    377 unwear(obj)
    378 	object *obj;
    379 {
    380 	if (obj) {
    381 		obj->in_use_flags &= (~BEING_WORN);
    382 	}
    383 	rogue.armor = (object *) 0;
    384 }
    385 
    386 void
    387 do_wear(obj)
    388 	object *obj;
    389 {
    390 	rogue.armor = obj;
    391 	obj->in_use_flags |= BEING_WORN;
    392 	obj->identified = 1;
    393 }
    394 
    395 void
    396 wield()
    397 {
    398 	short ch;
    399 	object *obj;
    400 	char desc[DCOLS];
    401 
    402 	if (rogue.weapon && rogue.weapon->is_cursed) {
    403 		message(curse_message, 0);
    404 		return;
    405 	}
    406 	ch = pack_letter("wield what?", WEAPON);
    407 
    408 	if (ch == CANCEL) {
    409 		return;
    410 	}
    411 	if (!(obj = get_letter_object(ch))) {
    412 		message("No such item.", 0);
    413 		return;
    414 	}
    415 	if (obj->what_is & (ARMOR | RING)) {
    416 		sprintf(desc, "you can't wield %s",
    417 			((obj->what_is == ARMOR) ? "armor" : "rings"));
    418 		message(desc, 0);
    419 		return;
    420 	}
    421 	if (obj->in_use_flags & BEING_WIELDED) {
    422 		message("in use", 0);
    423 	} else {
    424 		unwield(rogue.weapon);
    425 		(void) strcpy(desc, "wielding ");
    426 		get_desc(obj, desc + 9);
    427 		message(desc, 0);
    428 		do_wield(obj);
    429 		(void) reg_move();
    430 	}
    431 }
    432 
    433 void
    434 do_wield(obj)
    435 	object *obj;
    436 {
    437 	rogue.weapon = obj;
    438 	obj->in_use_flags |= BEING_WIELDED;
    439 }
    440 
    441 void
    442 unwield(obj)
    443 	object *obj;
    444 {
    445 	if (obj) {
    446 		obj->in_use_flags &= (~BEING_WIELDED);
    447 	}
    448 	rogue.weapon = (object *) 0;
    449 }
    450 
    451 void
    452 call_it()
    453 {
    454 	short ch;
    455 	object *obj;
    456 	struct id *id_table;
    457 	char buf[MAX_TITLE_LENGTH+2];
    458 
    459 	ch = pack_letter("call what?", (SCROL | POTION | WAND | RING));
    460 
    461 	if (ch == CANCEL) {
    462 		return;
    463 	}
    464 	if (!(obj = get_letter_object(ch))) {
    465 		message("no such item.", 0);
    466 		return;
    467 	}
    468 	if (!(obj->what_is & (SCROL | POTION | WAND | RING))) {
    469 		message("surely you already know what that's called", 0);
    470 		return;
    471 	}
    472 	id_table = get_id_table(obj);
    473 
    474 	if (get_input_line("call it:","",buf,id_table[obj->which_kind].title,1,1)) {
    475 		id_table[obj->which_kind].id_status = CALLED;
    476 		(void) strcpy(id_table[obj->which_kind].title, buf);
    477 	}
    478 }
    479 
    480 short
    481 pack_count(new_obj)
    482 	object *new_obj;
    483 {
    484 	object *obj;
    485 	short count = 0;
    486 
    487 	obj = rogue.pack.next_object;
    488 
    489 	while (obj) {
    490 		if (obj->what_is != WEAPON) {
    491 			count += obj->quantity;
    492 		} else if (!new_obj) {
    493 			count++;
    494 		} else if ((new_obj->what_is != WEAPON) ||
    495 			((obj->which_kind != ARROW) &&
    496 			(obj->which_kind != DAGGER) &&
    497 			(obj->which_kind != DART) &&
    498 			(obj->which_kind != SHURIKEN)) ||
    499 			(new_obj->which_kind != obj->which_kind) ||
    500 			(obj->quiver != new_obj->quiver)) {
    501 			count++;
    502 		}
    503 		obj = obj->next_object;
    504 	}
    505 	return(count);
    506 }
    507 
    508 boolean
    509 mask_pack(pack, mask)
    510 	object *pack;
    511 	unsigned short mask;
    512 {
    513 	while (pack->next_object) {
    514 		pack = pack->next_object;
    515 		if (pack->what_is & mask) {
    516 			return(1);
    517 		}
    518 	}
    519 	return(0);
    520 }
    521 
    522 boolean
    523 is_pack_letter(c, mask)
    524 	short *c;
    525 	unsigned short *mask;
    526 {
    527 	if (((*c == '?') || (*c == '!') || (*c == ':') || (*c == '=') ||
    528 		(*c == ')') || (*c == ']') || (*c == '/') || (*c == ','))) {
    529 		switch(*c) {
    530 		case '?':
    531 			*mask = SCROL;
    532 			break;
    533 		case '!':
    534 			*mask = POTION;
    535 			break;
    536 		case ':':
    537 			*mask = FOOD;
    538 			break;
    539 		case ')':
    540 			*mask = WEAPON;
    541 			break;
    542 		case ']':
    543 			*mask = ARMOR;
    544 			break;
    545 		case '/':
    546 			*mask = WAND;
    547 			break;
    548 		case '=':
    549 			*mask = RING;
    550 			break;
    551 		case ',':
    552 			*mask = AMULET;
    553 			break;
    554 		}
    555 		*c = LIST;
    556 		return(1);
    557 	}
    558 	return(((*c >= 'a') && (*c <= 'z')) || (*c == CANCEL) || (*c == LIST));
    559 }
    560 
    561 boolean
    562 has_amulet()
    563 {
    564 	return(mask_pack(&rogue.pack, AMULET));
    565 }
    566 
    567 void
    568 kick_into_pack()
    569 {
    570 	object *obj;
    571 	char desc[DCOLS];
    572 	short n, stat;
    573 
    574 	if (!(dungeon[rogue.row][rogue.col] & OBJECT)) {
    575 		message("nothing here", 0);
    576 	} else {
    577 		if ((obj = pick_up(rogue.row, rogue.col, &stat)) != NULL) {
    578 			get_desc(obj, desc);
    579 			if (obj->what_is == GOLD) {
    580 				message(desc, 0);
    581 				free_object(obj);
    582 			} else {
    583 				n = strlen(desc);
    584 				desc[n] = '(';
    585 				desc[n+1] = obj->ichar;
    586 				desc[n+2] = ')';
    587 				desc[n+3] = 0;
    588 				message(desc, 0);
    589 			}
    590 		}
    591 		if (obj || (!stat)) {
    592 			(void) reg_move();
    593 		}
    594 	}
    595 }
    596