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pack.c revision 1.3 
      1 /*	$NetBSD: pack.c,v 1.3 1995/04/22 10:27:54 cgd 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 #ifndef lint
     40 #if 0
     41 static char sccsid[] = "@(#)pack.c	8.1 (Berkeley) 5/31/93";
     42 #else
     43 static char rcsid[] = "$NetBSD: pack.c,v 1.3 1995/04/22 10:27:54 cgd Exp $";
     44 #endif
     45 #endif /* not lint */
     46 
     47 /*
     48  * pack.c
     49  *
     50  * This source herein may be modified and/or distributed by anybody who
     51  * so desires, with the following restrictions:
     52  *    1.)  No portion of this notice shall be removed.
     53  *    2.)  Credit shall not be taken for the creation of this source.
     54  *    3.)  This code is not to be traded, sold, or used for personal
     55  *         gain or profit.
     56  *
     57  */
     58 
     59 #include "rogue.h"
     60 
     61 char *curse_message = "you can't, it appears to be cursed";
     62 
     63 extern short levitate;
     64 
     65 object *
     66 add_to_pack(obj, pack, condense)
     67 object *obj, *pack;
     68 {
     69 	object *op;
     70 
     71 	if (condense) {
     72 		if (op = check_duplicate(obj, pack)) {
     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 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 drop()
    154 {
    155 	object *obj, *new;
    156 	short ch;
    157 	char desc[DCOLS];
    158 
    159 	if (dungeon[rogue.row][rogue.col] & (OBJECT | STAIRS | TRAP)) {
    160 		message("there's already something there", 0);
    161 		return;
    162 	}
    163 	if (!rogue.pack.next_object) {
    164 		message("you have nothing to drop", 0);
    165 		return;
    166 	}
    167 	if ((ch = pack_letter("drop what?", ALL_OBJECTS)) == CANCEL) {
    168 		return;
    169 	}
    170 	if (!(obj = get_letter_object(ch))) {
    171 		message("no such item.", 0);
    172 		return;
    173 	}
    174 	if (obj->in_use_flags & BEING_WIELDED) {
    175 		if (obj->is_cursed) {
    176 			message(curse_message, 0);
    177 			return;
    178 		}
    179 		unwield(rogue.weapon);
    180 	} else if (obj->in_use_flags & BEING_WORN) {
    181 		if (obj->is_cursed) {
    182 			message(curse_message, 0);
    183 			return;
    184 		}
    185 		mv_aquatars();
    186 		unwear(rogue.armor);
    187 		print_stats(STAT_ARMOR);
    188 	} else if (obj->in_use_flags & ON_EITHER_HAND) {
    189 		if (obj->is_cursed) {
    190 			message(curse_message, 0);
    191 			return;
    192 		}
    193 		un_put_on(obj);
    194 	}
    195 	obj->row = rogue.row;
    196 	obj->col = rogue.col;
    197 
    198 	if ((obj->quantity > 1) && (obj->what_is != WEAPON)) {
    199 		obj->quantity--;
    200 		new = alloc_object();
    201 		*new = *obj;
    202 		new->quantity = 1;
    203 		obj = new;
    204 	} else {
    205 		obj->ichar = 'L';
    206 		take_from_pack(obj, &rogue.pack);
    207 	}
    208 	place_at(obj, rogue.row, rogue.col);
    209 	(void) strcpy(desc, "dropped ");
    210 	get_desc(obj, desc+8);
    211 	message(desc, 0);
    212 	(void) reg_move();
    213 }
    214 
    215 object *
    216 check_duplicate(obj, pack)
    217 object *obj, *pack;
    218 {
    219 	object *op;
    220 
    221 	if (!(obj->what_is & (WEAPON | FOOD | SCROL | POTION))) {
    222 		return(0);
    223 	}
    224 	if ((obj->what_is == FOOD) && (obj->which_kind == FRUIT)) {
    225 		return(0);
    226 	}
    227 	op = pack->next_object;
    228 
    229 	while (op) {
    230 		if ((op->what_is == obj->what_is) &&
    231 			(op->which_kind == obj->which_kind)) {
    232 
    233 			if ((obj->what_is != WEAPON) ||
    234 			((obj->what_is == WEAPON) &&
    235 			((obj->which_kind == ARROW) ||
    236 			(obj->which_kind == DAGGER) ||
    237 			(obj->which_kind == DART) ||
    238 			(obj->which_kind == SHURIKEN)) &&
    239 			(obj->quiver == op->quiver))) {
    240 				op->quantity += obj->quantity;
    241 				return(op);
    242 			}
    243 		}
    244 		op = op->next_object;
    245 	}
    246 	return(0);
    247 }
    248 
    249 next_avail_ichar()
    250 {
    251 	register object *obj;
    252 	register i;
    253 	boolean ichars[26];
    254 
    255 	for (i = 0; i < 26; i++) {
    256 		ichars[i] = 0;
    257 	}
    258 	obj = rogue.pack.next_object;
    259 	while (obj) {
    260 		ichars[(obj->ichar - 'a')] = 1;
    261 		obj = obj->next_object;
    262 	}
    263 	for (i = 0; i < 26; i++) {
    264 		if (!ichars[i]) {
    265 			return(i + 'a');
    266 		}
    267 	}
    268 	return('?');
    269 }
    270 
    271 wait_for_ack()
    272 {
    273 	while (rgetchar() != ' ') ;
    274 }
    275 
    276 pack_letter(prompt, mask)
    277 char *prompt;
    278 unsigned short mask;
    279 {
    280 	short ch;
    281 	unsigned short tmask = mask;
    282 
    283 	if (!mask_pack(&rogue.pack, mask)) {
    284 		message("nothing appropriate", 0);
    285 		return(CANCEL);
    286 	}
    287 	for (;;) {
    288 
    289 		message(prompt, 0);
    290 
    291 		for (;;) {
    292 			ch = rgetchar();
    293 			if (!is_pack_letter(&ch, &mask)) {
    294 				sound_bell();
    295 			} else {
    296 				break;
    297 			}
    298 		}
    299 
    300 		if (ch == LIST) {
    301 			check_message();
    302 			mask = tmask;
    303 			inventory(&rogue.pack, mask);
    304 		} else {
    305 			break;
    306 		}
    307 		mask = tmask;
    308 	}
    309 	check_message();
    310 	return(ch);
    311 }
    312 
    313 take_off()
    314 {
    315 	char desc[DCOLS];
    316 	object *obj;
    317 
    318 	if (rogue.armor) {
    319 		if (rogue.armor->is_cursed) {
    320 			message(curse_message, 0);
    321 		} else {
    322 			mv_aquatars();
    323 			obj = rogue.armor;
    324 			unwear(rogue.armor);
    325 			(void) strcpy(desc, "was wearing ");
    326 			get_desc(obj, desc+12);
    327 			message(desc, 0);
    328 			print_stats(STAT_ARMOR);
    329 			(void) reg_move();
    330 		}
    331 	} else {
    332 		message("not wearing any", 0);
    333 	}
    334 }
    335 
    336 wear()
    337 {
    338 	short ch;
    339 	register object *obj;
    340 	char desc[DCOLS];
    341 
    342 	if (rogue.armor) {
    343 		message("your already wearing some", 0);
    344 		return;
    345 	}
    346 	ch = pack_letter("wear what?", ARMOR);
    347 
    348 	if (ch == CANCEL) {
    349 		return;
    350 	}
    351 	if (!(obj = get_letter_object(ch))) {
    352 		message("no such item.", 0);
    353 		return;
    354 	}
    355 	if (obj->what_is != ARMOR) {
    356 		message("you can't wear that", 0);
    357 		return;
    358 	}
    359 	obj->identified = 1;
    360 	(void) strcpy(desc, "wearing ");
    361 	get_desc(obj, desc + 8);
    362 	message(desc, 0);
    363 	do_wear(obj);
    364 	print_stats(STAT_ARMOR);
    365 	(void) reg_move();
    366 }
    367 
    368 unwear(obj)
    369 object *obj;
    370 {
    371 	if (obj) {
    372 		obj->in_use_flags &= (~BEING_WORN);
    373 	}
    374 	rogue.armor = (object *) 0;
    375 }
    376 
    377 do_wear(obj)
    378 object *obj;
    379 {
    380 	rogue.armor = obj;
    381 	obj->in_use_flags |= BEING_WORN;
    382 	obj->identified = 1;
    383 }
    384 
    385 wield()
    386 {
    387 	short ch;
    388 	register object *obj;
    389 	char desc[DCOLS];
    390 
    391 	if (rogue.weapon && rogue.weapon->is_cursed) {
    392 		message(curse_message, 0);
    393 		return;
    394 	}
    395 	ch = pack_letter("wield what?", WEAPON);
    396 
    397 	if (ch == CANCEL) {
    398 		return;
    399 	}
    400 	if (!(obj = get_letter_object(ch))) {
    401 		message("No such item.", 0);
    402 		return;
    403 	}
    404 	if (obj->what_is & (ARMOR | RING)) {
    405 		sprintf(desc, "you can't wield %s",
    406 			((obj->what_is == ARMOR) ? "armor" : "rings"));
    407 		message(desc, 0);
    408 		return;
    409 	}
    410 	if (obj->in_use_flags & BEING_WIELDED) {
    411 		message("in use", 0);
    412 	} else {
    413 		unwield(rogue.weapon);
    414 		(void) strcpy(desc, "wielding ");
    415 		get_desc(obj, desc + 9);
    416 		message(desc, 0);
    417 		do_wield(obj);
    418 		(void) reg_move();
    419 	}
    420 }
    421 
    422 do_wield(obj)
    423 object *obj;
    424 {
    425 	rogue.weapon = obj;
    426 	obj->in_use_flags |= BEING_WIELDED;
    427 }
    428 
    429 unwield(obj)
    430 object *obj;
    431 {
    432 	if (obj) {
    433 		obj->in_use_flags &= (~BEING_WIELDED);
    434 	}
    435 	rogue.weapon = (object *) 0;
    436 }
    437 
    438 call_it()
    439 {
    440 	short ch;
    441 	register object *obj;
    442 	struct id *id_table;
    443 	char buf[MAX_TITLE_LENGTH+2];
    444 
    445 	ch = pack_letter("call what?", (SCROL | POTION | WAND | RING));
    446 
    447 	if (ch == CANCEL) {
    448 		return;
    449 	}
    450 	if (!(obj = get_letter_object(ch))) {
    451 		message("no such item.", 0);
    452 		return;
    453 	}
    454 	if (!(obj->what_is & (SCROL | POTION | WAND | RING))) {
    455 		message("surely you already know what that's called", 0);
    456 		return;
    457 	}
    458 	id_table = get_id_table(obj);
    459 
    460 	if (get_input_line("call it:","",buf,id_table[obj->which_kind].title,1,1)) {
    461 		id_table[obj->which_kind].id_status = CALLED;
    462 		(void) strcpy(id_table[obj->which_kind].title, buf);
    463 	}
    464 }
    465 
    466 pack_count(new_obj)
    467 object *new_obj;
    468 {
    469 	object *obj;
    470 	short count = 0;
    471 
    472 	obj = rogue.pack.next_object;
    473 
    474 	while (obj) {
    475 		if (obj->what_is != WEAPON) {
    476 			count += obj->quantity;
    477 		} else if (!new_obj) {
    478 			count++;
    479 		} else if ((new_obj->what_is != WEAPON) ||
    480 			((obj->which_kind != ARROW) &&
    481 			(obj->which_kind != DAGGER) &&
    482 			(obj->which_kind != DART) &&
    483 			(obj->which_kind != SHURIKEN)) ||
    484 			(new_obj->which_kind != obj->which_kind) ||
    485 			(obj->quiver != new_obj->quiver)) {
    486 			count++;
    487 		}
    488 		obj = obj->next_object;
    489 	}
    490 	return(count);
    491 }
    492 
    493 boolean
    494 mask_pack(pack, mask)
    495 object *pack;
    496 unsigned short mask;
    497 {
    498 	while (pack->next_object) {
    499 		pack = pack->next_object;
    500 		if (pack->what_is & mask) {
    501 			return(1);
    502 		}
    503 	}
    504 	return(0);
    505 }
    506 
    507 is_pack_letter(c, mask)
    508 short *c;
    509 unsigned short *mask;
    510 {
    511 	if (((*c == '?') || (*c == '!') || (*c == ':') || (*c == '=') ||
    512 		(*c == ')') || (*c == ']') || (*c == '/') || (*c == ','))) {
    513 		switch(*c) {
    514 		case '?':
    515 			*mask = SCROL;
    516 			break;
    517 		case '!':
    518 			*mask = POTION;
    519 			break;
    520 		case ':':
    521 			*mask = FOOD;
    522 			break;
    523 		case ')':
    524 			*mask = WEAPON;
    525 			break;
    526 		case ']':
    527 			*mask = ARMOR;
    528 			break;
    529 		case '/':
    530 			*mask = WAND;
    531 			break;
    532 		case '=':
    533 			*mask = RING;
    534 			break;
    535 		case ',':
    536 			*mask = AMULET;
    537 			break;
    538 		}
    539 		*c = LIST;
    540 		return(1);
    541 	}
    542 	return(((*c >= 'a') && (*c <= 'z')) || (*c == CANCEL) || (*c == LIST));
    543 }
    544 
    545 has_amulet()
    546 {
    547 	return(mask_pack(&rogue.pack, AMULET));
    548 }
    549 
    550 kick_into_pack()
    551 {
    552 	object *obj;
    553 	char desc[DCOLS];
    554 	short n, stat;
    555 
    556 	if (!(dungeon[rogue.row][rogue.col] & OBJECT)) {
    557 		message("nothing here", 0);
    558 	} else {
    559 		if (obj = pick_up(rogue.row, rogue.col, &stat)) {
    560 			get_desc(obj, desc);
    561 			if (obj->what_is == GOLD) {
    562 				message(desc, 0);
    563 				free_object(obj);
    564 			} else {
    565 				n = strlen(desc);
    566 				desc[n] = '(';
    567 				desc[n+1] = obj->ichar;
    568 				desc[n+2] = ')';
    569 				desc[n+3] = 0;
    570 				message(desc, 0);
    571 			}
    572 		}
    573 		if (obj || (!stat)) {
    574 			(void) reg_move();
    575 		}
    576 	}
    577 }
    578