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/* $OpenBSD: hack.worm.c,v 1.7 2014/03/11 08:05:15 guenther Exp $ */
/*
* Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
* Amsterdam
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the Stichting Centrum voor Wiskunde en
* Informatica, nor the names of its contributors may be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdlib.h>
#include "hack.h"
#ifndef NOWORM
struct wseg *wsegs[32]; /* linked list, tail first */
struct wseg *wheads[32];
long wgrowtime[32];
static void remseg(struct wseg *);
int
getwn(struct monst *mtmp)
{
int tmp;
for(tmp=1; tmp<32; tmp++) if(!wsegs[tmp]) {
mtmp->wormno = tmp;
return(1);
}
return(0); /* level infested with worms */
}
/* called to initialize a worm unless cut in half */
void
initworm(struct monst *mtmp)
{
struct wseg *wtmp;
int tmp = mtmp->wormno;
if(!tmp) return;
wheads[tmp] = wsegs[tmp] = wtmp = newseg();
wgrowtime[tmp] = 0;
wtmp->wx = mtmp->mx;
wtmp->wy = mtmp->my;
/* wtmp->wdispl = 0; */
wtmp->nseg = 0;
}
void
worm_move(struct monst *mtmp)
{
struct wseg *wtmp, *whd;
int tmp = mtmp->wormno;
wtmp = newseg();
wtmp->wx = mtmp->mx;
wtmp->wy = mtmp->my;
wtmp->nseg = 0;
/* wtmp->wdispl = 0; */
(whd = wheads[tmp])->nseg = wtmp;
wheads[tmp] = wtmp;
if(cansee(whd->wx,whd->wy)){
unpmon(mtmp);
atl(whd->wx, whd->wy, '~');
whd->wdispl = 1;
} else whd->wdispl = 0;
if(wgrowtime[tmp] <= moves) {
if(!wgrowtime[tmp]) wgrowtime[tmp] = moves + rnd(5);
else wgrowtime[tmp] += 2+rnd(15);
mtmp->mhpmax += 3;
mtmp->mhp += 3;
return;
}
whd = wsegs[tmp];
wsegs[tmp] = whd->nseg;
remseg(whd);
}
void
worm_nomove(struct monst *mtmp)
{
int tmp;
struct wseg *wtmp;
tmp = mtmp->wormno;
wtmp = wsegs[tmp];
if(wtmp == wheads[tmp]) return;
if(wtmp == 0 || wtmp->nseg == 0) panic("worm_nomove?");
wsegs[tmp] = wtmp->nseg;
remseg(wtmp);
mtmp->mhp -= 3; /* mhpmax not changed ! */
}
void
wormdead(struct monst *mtmp)
{
int tmp = mtmp->wormno;
struct wseg *wtmp, *wtmp2;
if(!tmp) return;
mtmp->wormno = 0;
for(wtmp = wsegs[tmp]; wtmp; wtmp = wtmp2){
wtmp2 = wtmp->nseg;
remseg(wtmp);
}
wsegs[tmp] = 0;
}
void
wormhit(struct monst *mtmp)
{
int tmp = mtmp->wormno;
struct wseg *wtmp;
if(!tmp) return; /* worm without tail */
for(wtmp = wsegs[tmp]; wtmp; wtmp = wtmp->nseg)
(void) hitu(mtmp,1);
}
void
wormsee(unsigned tmp)
{
struct wseg *wtmp = wsegs[tmp];
if(!wtmp) panic("wormsee: wtmp==0");
for(; wtmp->nseg; wtmp = wtmp->nseg)
if(!cansee(wtmp->wx,wtmp->wy) && wtmp->wdispl){
newsym(wtmp->wx, wtmp->wy);
wtmp->wdispl = 0;
}
}
void
pwseg(struct wseg *wtmp)
{
if(!wtmp->wdispl){
atl(wtmp->wx, wtmp->wy, '~');
wtmp->wdispl = 1;
}
}
/* uchar weptyp; uwep->otyp or 0 */
void
cutworm(struct monst *mtmp, xchar x, xchar y, uchar weptyp)
{
struct wseg *wtmp, *wtmp2;
struct monst *mtmp2;
int tmp,tmp2;
if(mtmp->mx == x && mtmp->my == y) return; /* hit headon */
/* cutting goes best with axe or sword */
tmp = rnd(20);
if(weptyp == LONG_SWORD || weptyp == TWO_HANDED_SWORD ||
weptyp == AXE) tmp += 5;
if(tmp < 12) return;
/* if tail then worm just loses a tail segment */
tmp = mtmp->wormno;
wtmp = wsegs[tmp];
if(wtmp->wx == x && wtmp->wy == y){
wsegs[tmp] = wtmp->nseg;
remseg(wtmp);
return;
}
/* cut the worm in two halves */
mtmp2 = newmonst(0);
*mtmp2 = *mtmp;
mtmp2->mxlth = mtmp2->mnamelth = 0;
/* sometimes the tail end dies */
if(rn2(3) || !getwn(mtmp2)){
monfree(mtmp2);
tmp2 = 0;
} else {
tmp2 = mtmp2->wormno;
wsegs[tmp2] = wsegs[tmp];
wgrowtime[tmp2] = 0;
}
do {
if(wtmp->nseg->wx == x && wtmp->nseg->wy == y){
if(tmp2) wheads[tmp2] = wtmp;
wsegs[tmp] = wtmp->nseg->nseg;
remseg(wtmp->nseg);
wtmp->nseg = 0;
if(tmp2){
pline("You cut the worm in half.");
mtmp2->mhpmax = mtmp2->mhp =
d(mtmp2->data->mlevel, 8);
mtmp2->mx = wtmp->wx;
mtmp2->my = wtmp->wy;
mtmp2->nmon = fmon;
fmon = mtmp2;
pmon(mtmp2);
} else {
pline("You cut off part of the worm's tail.");
remseg(wtmp);
}
mtmp->mhp /= 2;
return;
}
wtmp2 = wtmp->nseg;
if(!tmp2) remseg(wtmp);
wtmp = wtmp2;
} while(wtmp->nseg);
panic("Cannot find worm segment");
}
static void
remseg(struct wseg *wtmp)
{
if(wtmp->wdispl)
newsym(wtmp->wx, wtmp->wy);
free(wtmp);
}
#endif /* NOWORM */
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