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      1 /*	$NetBSD: hack.mkobj.c,v 1.9 2011/08/07 06:03:45 dholland Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
      5  * Amsterdam
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions are
     10  * met:
     11  *
     12  * - Redistributions of source code must retain the above copyright notice,
     13  * this list of conditions and the following disclaimer.
     14  *
     15  * - 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  *
     19  * - Neither the name of the Stichting Centrum voor Wiskunde en
     20  * Informatica, nor the names of its contributors may be used to endorse or
     21  * promote products derived from this software without specific prior
     22  * written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
     25  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     26  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
     27  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
     28  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     30  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     31  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     32  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     33  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     34  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     35  */
     36 
     37 /*
     38  * Copyright (c) 1982 Jay Fenlason <hack (at) gnu.org>
     39  * All rights reserved.
     40  *
     41  * Redistribution and use in source and binary forms, with or without
     42  * modification, are permitted provided that the following conditions
     43  * are met:
     44  * 1. Redistributions of source code must retain the above copyright
     45  *    notice, this list of conditions and the following disclaimer.
     46  * 2. Redistributions in binary form must reproduce the above copyright
     47  *    notice, this list of conditions and the following disclaimer in the
     48  *    documentation and/or other materials provided with the distribution.
     49  * 3. The name of the author may not be used to endorse or promote products
     50  *    derived from this software without specific prior written permission.
     51  *
     52  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
     53  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
     54  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
     55  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     56  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     57  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     58  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     59  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     60  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     61  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     62  */
     63 
     64 #include <sys/cdefs.h>
     65 #ifndef lint
     66 __RCSID("$NetBSD: hack.mkobj.c,v 1.9 2011/08/07 06:03:45 dholland Exp $");
     67 #endif				/* not lint */
     68 
     69 #include "hack.h"
     70 #include "extern.h"
     71 
     72 static const char mkobjstr[] = "))[[!!!!????%%%%/=**))[[!!!!????%%%%/=**(%";
     73 
     74 struct obj     *
     75 mkobj_at(int let, int x, int y)
     76 {
     77 	struct obj     *otmp = mkobj(let);
     78 	otmp->ox = x;
     79 	otmp->oy = y;
     80 	otmp->nobj = fobj;
     81 	fobj = otmp;
     82 	return (otmp);
     83 }
     84 
     85 void
     86 mksobj_at(int otyp, int x, int y)
     87 {
     88 	struct obj     *otmp = mksobj(otyp);
     89 	otmp->ox = x;
     90 	otmp->oy = y;
     91 	otmp->nobj = fobj;
     92 	fobj = otmp;
     93 }
     94 
     95 struct obj     *
     96 mkobj(int let)
     97 {
     98 	if (!let)
     99 		let = mkobjstr[rn2(sizeof(mkobjstr) - 1)];
    100 	return (
    101 		mksobj(
    102 		       letter(let) ?
    103 	  CORPSE + ((let > 'Z') ? (let - 'a' + 'Z' - '@' + 1) : (let - '@'))
    104 		       : probtype(let)
    105 		       )
    106 		);
    107 }
    108 
    109 
    110 struct obj      zeroobj;
    111 
    112 struct obj     *
    113 mksobj(int otyp)
    114 {
    115 	struct obj     *otmp;
    116 	char            let = objects[otyp].oc_olet;
    117 
    118 	otmp = newobj(0);
    119 	*otmp = zeroobj;
    120 	otmp->age = moves;
    121 	otmp->o_id = flags.ident++;
    122 	otmp->quan = 1;
    123 	otmp->olet = let;
    124 	otmp->otyp = otyp;
    125 	otmp->dknown = strchr("/=!?*", let) ? 0 : 1;
    126 	switch (let) {
    127 	case WEAPON_SYM:
    128 		otmp->quan = (otmp->otyp <= ROCK) ? rn1(6, 6) : 1;
    129 		if (!rn2(11))
    130 			otmp->spe = rnd(3);
    131 		else if (!rn2(10)) {
    132 			otmp->cursed = 1;
    133 			otmp->spe = -rnd(3);
    134 		}
    135 		break;
    136 	case FOOD_SYM:
    137 		if (otmp->otyp >= CORPSE)
    138 			break;
    139 #ifdef NOT_YET_IMPLEMENTED
    140 		/* if tins are to be identified, need to adapt doname() etc */
    141 		if (otmp->otyp == TIN)
    142 			otmp->spe = rnd(...);
    143 #endif	/* NOT_YET_IMPLEMENTED */
    144 		/* FALLTHROUGH */
    145 	case GEM_SYM:
    146 		otmp->quan = rn2(6) ? 1 : 2;
    147 		break;
    148 	case TOOL_SYM:
    149 	case CHAIN_SYM:
    150 	case BALL_SYM:
    151 	case ROCK_SYM:
    152 	case POTION_SYM:
    153 	case SCROLL_SYM:
    154 	case AMULET_SYM:
    155 		break;
    156 	case ARMOR_SYM:
    157 		if (!rn2(8))
    158 			otmp->cursed = 1;
    159 		if (!rn2(10))
    160 			otmp->spe = rnd(3);
    161 		else if (!rn2(9)) {
    162 			otmp->spe = -rnd(3);
    163 			otmp->cursed = 1;
    164 		}
    165 		break;
    166 	case WAND_SYM:
    167 		if (otmp->otyp == WAN_WISHING)
    168 			otmp->spe = 3;
    169 		else
    170 			otmp->spe = rn1(5,
    171 			       (objects[otmp->otyp].bits & NODIR) ? 11 : 4);
    172 		break;
    173 	case RING_SYM:
    174 		if (objects[otmp->otyp].bits & SPEC) {
    175 			if (!rn2(3)) {
    176 				otmp->cursed = 1;
    177 				otmp->spe = -rnd(2);
    178 			} else
    179 				otmp->spe = rnd(2);
    180 		} else if (otmp->otyp == RIN_TELEPORTATION ||
    181 			   otmp->otyp == RIN_AGGRAVATE_MONSTER ||
    182 			   otmp->otyp == RIN_HUNGER || !rn2(9))
    183 			otmp->cursed = 1;
    184 		break;
    185 	default:
    186 		panic("impossible mkobj");
    187 	}
    188 	otmp->owt = weight(otmp);
    189 	return (otmp);
    190 }
    191 
    192 int
    193 letter(int c)
    194 {
    195 	return (('@' <= c && c <= 'Z') || ('a' <= c && c <= 'z'));
    196 }
    197 
    198 int
    199 weight(struct obj *obj)
    200 {
    201 	int             wt = objects[obj->otyp].oc_weight;
    202 	return (wt ? wt * obj->quan : (obj->quan + 1) / 2);
    203 }
    204 
    205 void
    206 mkgold(long num, int x, int y)
    207 {
    208 	struct gold    *gold;
    209 	long            amount = (num ? num : 1 + (rnd(dlevel + 2) * rnd(30)));
    210 
    211 	if ((gold = g_at(x, y)) != NULL)
    212 		gold->amount += amount;
    213 	else {
    214 		gold = newgold();
    215 		gold->ngold = fgold;
    216 		gold->gx = x;
    217 		gold->gy = y;
    218 		gold->amount = amount;
    219 		fgold = gold;
    220 		/* do sth with display? */
    221 	}
    222 }
    223