Category : C Source Code
Archive   : HACKSRC.ZIP
Filename : ENGRAVE.C

/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* engrave.c - version 1.0.3 */

#include "hack.h"

extern char *nomovemsg;
extern char nul[];
extern struct obj zeroobj;
struct engr {
struct engr *nxt_engr;
char *engr_txt;
xchar engr_x, engr_y;
unsigned engr_lth; /* for save & restore; not length of text */
long engr_time; /* moment engraving was (will be) finished */
xchar engr_type;
#define DUST 1
#define ENGRAVE 2
#define BURN 3
} *head_engr;

struct engr *
engr_at(x,y) register xchar x,y; {
register struct engr *ep = head_engr;
while(ep) {
if(x == ep->engr_x && y == ep->engr_y)
return(ep);
ep = ep->nxt_engr;
}
return((struct engr *) 0);
}

sengr_at(s,x,y) register char *s; register xchar x,y; {
register struct engr *ep = engr_at(x,y);
register char *t;
register int n;
if(ep && ep->engr_time <= moves) {
t = ep->engr_txt;
/*
if(!strcmp(s,t)) return(1);
*/
n = strlen(s);
while(*t) {
if(!strncmp(s,t,n)) return(1);
t++;
}
}
return(0);
}

u_wipe_engr(cnt)
register int cnt;
{
if(!u.uswallow && !Levitation)
wipe_engr_at(u.ux, u.uy, cnt);
}

wipe_engr_at(x,y,cnt) register xchar x,y,cnt; {
register struct engr *ep = engr_at(x,y);
register int lth,pos;
char ch;
if(ep){
if(ep->engr_type != DUST) {
cnt = rn2(1 + 50/(cnt+1)) ? 0 : 1;
}
lth = strlen(ep->engr_txt);
if(lth && cnt > 0 ) {
while(cnt--) {
pos = rn2(lth);
if((ch = ep->engr_txt[pos]) == ' ')
continue;
ep->engr_txt[pos] = (ch != '?') ? '?' : ' ';
}
}
while(lth && ep->engr_txt[lth-1] == ' ')
ep->engr_txt[--lth] = 0;
while(ep->engr_txt[0] == ' ')
ep->engr_txt++;
if(!ep->engr_txt[0]) del_engr(ep);
}
}

read_engr_at(x,y) register int x,y; {
register struct engr *ep = engr_at(x,y);
if(ep && ep->engr_txt[0]) {
switch(ep->engr_type) {
case DUST:
pline("Something is written here in the dust.");
break;
case ENGRAVE:
pline("Something is engraved here on the floor.");
break;
case BURN:
pline("Some text has been burned here in the floor.");
break;
default:
impossible("Something is written in a very strange way.");
}
pline("You read: \"%s\".", ep->engr_txt);
}
}

make_engr_at(x,y,s)
register int x,y;
register char *s;
{
register struct engr *ep;

if(ep = engr_at(x,y))
del_engr(ep);
ep = (struct engr *)
alloc((unsigned)(sizeof(struct engr) + strlen(s) + 1));
ep->nxt_engr = head_engr;
head_engr = ep;
ep->engr_x = x;
ep->engr_y = y;
ep->engr_txt = (char *)(ep + 1);
(void) strcpy(ep->engr_txt, s);
ep->engr_time = 0;
ep->engr_type = DUST;
ep->engr_lth = strlen(s) + 1;
}

doengrave(){
register int len;
register char *sp;
register struct engr *ep, *oep = engr_at(u.ux,u.uy);
char buf[BUFSZ];
xchar type;
int spct; /* number of leading spaces */
register struct obj *otmp;
multi = 0;

if(u.uswallow) {
pline("You're joking. Hahaha!"); /* riv05!a3 */
return(0);
}

/* one may write with finger, weapon or wand */
otmp = getobj("#-)/", "write with");
if(!otmp) return(0);

if(otmp == &zeroobj)
otmp = 0;
if(otmp && otmp->otyp == WAN_FIRE && otmp->spe) {
type = BURN;
otmp->spe--;
} else {
/* first wield otmp */
if(otmp != uwep) {
if(uwep && uwep->cursed) {
/* Andreas Bormann */
pline("Since your weapon is welded to your hand,");
pline("you use the %s.", aobjnam(uwep, (char *) 0));
otmp = uwep;
} else {
if(!otmp)
pline("You are now empty-handed.");
else if(otmp->cursed)
pline("The %s %s to your hand!",
aobjnam(otmp, "weld"),
(otmp->quan == 1) ? "itself" : "themselves");
else
pline("You now wield %s.", doname(otmp));
setuwep(otmp);
}
}

if(!otmp)
type = DUST;
else
if(otmp->otyp == DAGGER || otmp->otyp == TWO_HANDED_SWORD ||
otmp->otyp == CRYSKNIFE ||
otmp->otyp == LONG_SWORD || otmp->otyp == AXE) {
type = ENGRAVE;
if((int)otmp->spe <= -3) {
type = DUST;
pline("Your %s too dull for engraving.",
aobjnam(otmp, "are"));
if(oep && oep->engr_type != DUST) return(1);
}
} else type = DUST;
}
if(Levitation && type != BURN){ /* riv05!a3 */
pline("You can't reach the floor!");
return(1);
}
if(oep && oep->engr_type == DUST){
pline("You wipe out the message that was written here.");
del_engr(oep);
oep = 0;
}
if(type == DUST && oep){
pline("You cannot wipe out the message that is %s in the rock.",
(oep->engr_type == BURN) ? "burned" : "engraved");
return(1);
}

pline("What do you want to %s on the floor here? ",
(type == ENGRAVE) ? "engrave" : (type == BURN) ? "burn" : "write");
getlin(buf);
clrlin();
spct = 0;
sp = buf;
while(*sp == ' ') spct++, sp++;
len = strlen(sp);
if(!len || *buf == '\033') {
if(type == BURN) otmp->spe++;
return(0);
}

switch(type) {
case DUST:
case BURN:
if(len > 15) {
multi = -(len/10);
nomovemsg = "You finished writing.";
}
break;
case ENGRAVE: /* here otmp != 0 */
{ int len2 = (otmp->spe + 3) * 2 + 1;

pline("Your %s dull.", aobjnam(otmp, "get"));
if(len2 < len) {
len = len2;
sp[len] = 0;
otmp->spe = -3;
nomovemsg = "You cannot engrave more.";
} else {
otmp->spe -= len/2;
nomovemsg = "You finished engraving.";
}
multi = -len;
}
break;
}
if(oep) len += strlen(oep->engr_txt) + spct;
ep = (struct engr *) alloc((unsigned)(sizeof(struct engr) + len + 1));
ep->nxt_engr = head_engr;
head_engr = ep;
ep->engr_x = u.ux;
ep->engr_y = u.uy;
sp = (char *)(ep + 1); /* (char *)ep + sizeof(struct engr) */
ep->engr_txt = sp;
if(oep) {
(void) strcpy(sp, oep->engr_txt);
(void) strcat(sp, buf);
del_engr(oep);
} else
(void) strcpy(sp, buf);
ep->engr_lth = len+1;
ep->engr_type = type;
ep->engr_time = moves-multi;

/* kludge to protect pline against excessively long texts */
if(len > BUFSZ-20) sp[BUFSZ-20] = 0;

return(1);
}

save_engravings(fd) int fd; {
register struct engr *ep = head_engr;

while(ep) {
if(!ep->engr_lth || !ep->engr_txt[0]){
ep = ep->nxt_engr;
continue;
}
bwrite(fd, (char *) & (ep->engr_lth), sizeof(ep->engr_lth));
bwrite(fd, (char *) ep, sizeof(struct engr) + ep->engr_lth);
ep = ep->nxt_engr;
}
bwrite(fd, (char *) nul, sizeof(unsigned));
#ifdef DGK
if (!count_only)
#endif
head_engr = 0;
}

rest_engravings(fd) int fd; {
register struct engr *ep;
unsigned lth;
head_engr = 0;
while(1) {
mread(fd, (char *) <h, sizeof(unsigned));
if(lth == 0) return;
ep = (struct engr *) alloc(sizeof(struct engr) + lth);
mread(fd, (char *) ep, sizeof(struct engr) + lth);
ep->nxt_engr = head_engr;
ep->engr_txt = (char *) (ep + 1); /* Andreas Bormann */
head_engr = ep;
}
}

del_engr(ep) register struct engr *ep; {
register struct engr *ept;
if(ep == head_engr)
head_engr = ep->nxt_engr;
else {
for(ept = head_engr; ept; ept = ept->nxt_engr) {
if(ept->nxt_engr == ep) {
ept->nxt_engr = ep->nxt_engr;
goto fnd;
}
}
impossible("Error in del_engr?");
return;
fnd: ;
}
free((char *) ep);
}