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/*
* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985.
*/
#ifndef lint
static char rcsid[] = "$NetBSD: hack.worm.c,v 1.3 1995/03/23 08:32:12 cgd Exp $";
#endif /* not lint */
#include "hack.h"
#ifndef NOWORM
#include "def.wseg.h"
struct wseg *wsegs[32]; /* linked list, tail first */
struct wseg *wheads[32];
long wgrowtime[32];
getwn(mtmp) struct monst *mtmp; {
register 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 */
initworm(mtmp) struct monst *mtmp; {
register struct wseg *wtmp;
register 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;
}
worm_move(mtmp) struct monst *mtmp; {
register struct wseg *wtmp, *whd;
register 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);
}
worm_nomove(mtmp) register struct monst *mtmp; {
register tmp;
register 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 ! */
}
wormdead(mtmp) register struct monst *mtmp; {
register tmp = mtmp->wormno;
register 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;
}
wormhit(mtmp) register struct monst *mtmp; {
register tmp = mtmp->wormno;
register struct wseg *wtmp;
if(!tmp) return; /* worm without tail */
for(wtmp = wsegs[tmp]; wtmp; wtmp = wtmp->nseg)
(void) hitu(mtmp,1);
}
wormsee(tmp) register unsigned tmp; {
register 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;
}
}
pwseg(wtmp) register struct wseg *wtmp; {
if(!wtmp->wdispl){
atl(wtmp->wx, wtmp->wy, '~');
wtmp->wdispl = 1;
}
}
cutworm(mtmp,x,y,weptyp)
register struct monst *mtmp;
register xchar x,y;
register uchar weptyp; /* uwep->otyp or 0 */
{
register struct wseg *wtmp, *wtmp2;
register struct monst *mtmp2;
register 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");
}
remseg(wtmp) register struct wseg *wtmp; {
if(wtmp->wdispl)
newsym(wtmp->wx, wtmp->wy);
free((char *) wtmp);
}
#endif NOWORM
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