games/hack/hack.worm.c

   1 /*      $NetBSD: hack.worm.c,v 1.7 2009/06/07 18:30:39 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@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.worm.c,v 1.7 2009/06/07 18:30:39 dholland Exp $");
  67 #endif                          /* not lint */
  68
  69 #include <stdlib.h>
  70 #include "hack.h"
  71 #include "extern.h"
  72 #ifndef NOWORM
  73 #include "def.wseg.h"
  74
  75 struct wseg    *wsegs[32];      /* linked list, tail first */
  76 struct wseg    *wheads[32];
  77 long            wgrowtime[32];
  78
  79 static void remseg(struct wseg *);
  80
  81 int
  82 getwn(struct monst *mtmp)
  83 {
  84         int     tmp;
  85         for (tmp = 1; tmp < 32; tmp++)
  86                 if (!wsegs[tmp]) {
  87                         mtmp->wormno = tmp;
  88                         return (1);
  89                 }
  90         return (0);             /* level infested with worms */
  91 }
  92
  93 /* called to initialize a worm unless cut in half */
  94 void
  95 initworm(struct monst *mtmp)
  96 {
  97         struct wseg    *wtmp;
  98         int     tmp = mtmp->wormno;
  99         if (!tmp)
 100                 return;
 101         wheads[tmp] = wsegs[tmp] = wtmp = newseg();
 102         wgrowtime[tmp] = 0;
 103         wtmp->wx = mtmp->mx;
 104         wtmp->wy = mtmp->my;
 105         /* wtmp->wdispl = 0; */
 106         wtmp->nseg = 0;
 107 }
 108
 109 void
 110 worm_move(struct monst *mtmp)
 111 {
 112         struct wseg    *wtmp, *whd = NULL;
 113         int             tmp = mtmp->wormno;
 114         wtmp = newseg();
 115         wtmp->wx = mtmp->mx;
 116         wtmp->wy = mtmp->my;
 117         wtmp->nseg = 0;
 118         /* wtmp->wdispl = 0; */
 119         (whd = wheads[tmp])->nseg = wtmp;
 120         wheads[tmp] = wtmp;
 121         if (cansee(whd->wx, whd->wy)) {
 122                 unpmon(mtmp);
 123                 atl(whd->wx, whd->wy, '~');
 124                 whd->wdispl = 1;
 125         } else
 126                 whd->wdispl = 0;
 127         if (wgrowtime[tmp] <= moves) {
 128                 if (!wgrowtime[tmp])
 129                         wgrowtime[tmp] = moves + rnd(5);
 130                 else
 131                         wgrowtime[tmp] += 2 + rnd(15);
 132                 mtmp->mhpmax += 3;
 133                 mtmp->mhp += 3;
 134                 return;
 135         }
 136         whd = wsegs[tmp];
 137         wsegs[tmp] = whd->nseg;
 138         remseg(whd);
 139 }
 140
 141 void
 142 worm_nomove(struct monst *mtmp)
 143 {
 144         int             tmp;
 145         struct wseg    *wtmp;
 146         tmp = mtmp->wormno;
 147         wtmp = wsegs[tmp];
 148         if (wtmp == wheads[tmp])
 149                 return;
 150         if (wtmp == 0 || wtmp->nseg == 0)
 151                 panic("worm_nomove?");
 152         wsegs[tmp] = wtmp->nseg;
 153         remseg(wtmp);
 154         mtmp->mhp -= 3;         /* mhpmax not changed ! */
 155 }
 156
 157 void
 158 wormdead(struct monst *mtmp)
 159 {
 160         int             tmp = mtmp->wormno;
 161         struct wseg    *wtmp, *wtmp2;
 162         if (!tmp)
 163                 return;
 164         mtmp->wormno = 0;
 165         for (wtmp = wsegs[tmp]; wtmp; wtmp = wtmp2) {
 166                 wtmp2 = wtmp->nseg;
 167                 remseg(wtmp);
 168         }
 169         wsegs[tmp] = 0;
 170 }
 171
 172 void
 173 wormhit(struct monst *mtmp)
 174 {
 175         int             tmp = mtmp->wormno;
 176         struct wseg    *wtmp;
 177         if (!tmp)
 178                 return;         /* worm without tail */
 179         for (wtmp = wsegs[tmp]; wtmp; wtmp = wtmp->nseg)
 180                 (void) hitu(mtmp, 1);
 181 }
 182
 183 void
 184 wormsee(unsigned tmp)
 185 {
 186         struct wseg    *wtmp = wsegs[tmp];
 187         if (!wtmp)
 188                 panic("wormsee: wtmp==0");
 189         for (; wtmp->nseg; wtmp = wtmp->nseg)
 190                 if (!cansee(wtmp->wx, wtmp->wy) && wtmp->wdispl) {
 191                         newsym(wtmp->wx, wtmp->wy);
 192                         wtmp->wdispl = 0;
 193                 }
 194 }
 195
 196 void
 197 pwseg(struct wseg *wtmp)
 198 {
 199         if (!wtmp->wdispl) {
 200                 atl(wtmp->wx, wtmp->wy, '~');
 201                 wtmp->wdispl = 1;
 202         }
 203 }
 204
 205 /* weptyp is uwep->otyp or 0 */
 206 void
 207 cutworm(struct monst *mtmp, xchar x, xchar y, uchar weptyp)
 208 {
 209         struct wseg    *wtmp, *wtmp2;
 210         struct monst   *mtmp2;
 211         int             tmp, tmp2;
 212         if (mtmp->mx == x && mtmp->my == y)
 213                 return;         /* hit headon */
 214
 215         /* cutting goes best with axe or sword */
 216         tmp = rnd(20);
 217         if (weptyp == LONG_SWORD || weptyp == TWO_HANDED_SWORD ||
 218             weptyp == AXE)
 219                 tmp += 5;
 220         if (tmp < 12)
 221                 return;
 222
 223         /* if tail then worm just loses a tail segment */
 224         tmp = mtmp->wormno;
 225         wtmp = wsegs[tmp];
 226         if (wtmp->wx == x && wtmp->wy == y) {
 227                 wsegs[tmp] = wtmp->nseg;
 228                 remseg(wtmp);
 229                 return;
 230         }
 231         /* cut the worm in two halves */
 232         mtmp2 = newmonst(0);
 233         *mtmp2 = *mtmp;
 234         mtmp2->mxlth = mtmp2->mnamelth = 0;
 235
 236         /* sometimes the tail end dies */
 237         if (rn2(3) || !getwn(mtmp2)) {
 238                 monfree(mtmp2);
 239                 tmp2 = 0;
 240         } else {
 241                 tmp2 = mtmp2->wormno;
 242                 wsegs[tmp2] = wsegs[tmp];
 243                 wgrowtime[tmp2] = 0;
 244         }
 245         do {
 246                 if (wtmp->nseg->wx == x && wtmp->nseg->wy == y) {
 247                         if (tmp2)
 248                                 wheads[tmp2] = wtmp;
 249                         wsegs[tmp] = wtmp->nseg->nseg;
 250                         remseg(wtmp->nseg);
 251                         wtmp->nseg = 0;
 252                         if (tmp2) {
 253                                 pline("You cut the worm in half.");
 254                                 mtmp2->mhpmax = mtmp2->mhp =
 255                                         d(mtmp2->data->mlevel, 8);
 256                                 mtmp2->mx = wtmp->wx;
 257                                 mtmp2->my = wtmp->wy;
 258                                 mtmp2->nmon = fmon;
 259                                 fmon = mtmp2;
 260                                 pmon(mtmp2);
 261                         } else {
 262                                 pline("You cut off part of the worm's tail.");
 263                                 remseg(wtmp);
 264                                 monfree(mtmp2);
 265                         }
 266                         mtmp->mhp /= 2;
 267                         return;
 268                 }
 269                 wtmp2 = wtmp->nseg;
 270                 if (!tmp2)
 271                         remseg(wtmp);
 272                 wtmp = wtmp2;
 273         } while (wtmp->nseg);
 274         panic("Cannot find worm segment");
 275 }
 276
 277 static void
 278 remseg(struct wseg *wtmp)
 279 {
 280         if (wtmp->wdispl)
 281                 newsym(wtmp->wx, wtmp->wy);
 282         free((char *) wtmp);
 283 }
 284 #endif  /* NOWORM */