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Language/OS - Multiplatform Resource Library
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LANGUAGE OS.iso
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gnu
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nethack.lha
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nethack-3.1
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src
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o_init.c
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C/C++ Source or Header
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1992-12-12
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9KB
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341 lines
/* SCCS Id: @(#)o_init.c 3.1 92/12/11 */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* NetHack may be freely redistributed. See license for details. */
#include "hack.h" /* for typedefs */
static void NDECL(setgemprobs);
static void FDECL(shuffle,(int,int,BOOLEAN_P));
static boolean FDECL(interesting_to_discover,(int));
/* note that NROFOBJECTS is the number of legal objects, which does not count
* the strange object and null object that take up positions 0 and NROFOBJECTS+1
* in the objects array
*/
#define TOTAL_OBJS (NROFOBJECTS+2)
const char obj_symbols[] = {
ILLOBJ_CLASS, AMULET_CLASS, GOLD_CLASS, FOOD_CLASS, WEAPON_CLASS,
TOOL_CLASS, BALL_CLASS, CHAIN_CLASS, ROCK_CLASS, ARMOR_CLASS,
POTION_CLASS, SCROLL_CLASS, WAND_CLASS,
SPBOOK_CLASS, RING_CLASS, GEM_CLASS, 0 };
static short NEARDATA disco[TOTAL_OBJS] = DUMMY;
int
letindex(acls) register char acls; {
register int i = 0;
register char ch;
while ((ch = obj_symbols[i++]) != 0)
if (ch == acls) return(i);
return(0);
}
static void
setgemprobs()
{
register int j, first;
int lev = (ledger_no(&u.uz) > maxledgerno())
? maxledgerno() : ledger_no(&u.uz);
first = bases[letindex(GEM_CLASS)];
for(j = 0; j < 9-lev/3; j++)
objects[first+j].oc_prob = 0;
first += j;
if (first > LAST_GEM || objects[first].oc_class != GEM_CLASS ||
OBJ_NAME(objects[first]) == NULL) {
raw_printf("Not enough gems? - first=%d j=%d LAST_GEM=%d",
first, j, LAST_GEM);
wait_synch();
}
for (j = first; j <= LAST_GEM; j++)
objects[j].oc_prob = (184+j-first)/(LAST_GEM+1-first);
}
/* shuffle descriptions on objects o_low to o_high */
static void
shuffle(o_low, o_high, domaterial)
register int o_low, o_high;
register boolean domaterial;
{
register int i, j;
#ifdef TEXTCOLOR
int color;
#endif /* TEXTCOLOR */
register short sw;
for (j=o_low; j <= o_high; j++) {
i = o_low + rn2(j+1-o_low);
sw = objects[j].oc_descr_idx;
objects[j].oc_descr_idx = objects[i].oc_descr_idx;
objects[i].oc_descr_idx = sw;
#ifdef TEXTCOLOR
color = objects[j].oc_color;
objects[j].oc_color = objects[i].oc_color;
objects[i].oc_color = color;
#endif /* TEXTCOLOR */
/* shuffle material */
if (domaterial) {
sw = objects[j].oc_material;
objects[j].oc_material = objects[i].oc_material;
objects[i].oc_material = sw;
}
}
}
void
init_objects(){
register int i, j, first, last, sum, end;
register char acls;
#ifdef TEXTCOLOR
# define COPY_OBJ_DESCR(o_dst,o_src) \
o_dst.oc_descr_idx = o_src.oc_descr_idx,\
o_dst.oc_color = o_src.oc_color
#else
# define COPY_OBJ_DESCR(o_dst,o_src) o_dst.oc_descr_idx = o_src.oc_descr_idx
#endif
/* bug fix to prevent "initialization error" abort on Intel Xenix.
* reported by mikew@semike
*/
for (i = 0; i < sizeof(obj_symbols); i++)
bases[i] = 0;
/* initialize object descriptions */
for (i = 0; i < TOTAL_OBJS; i++)
objects[i].oc_name_idx = objects[i].oc_descr_idx = i;
init_artifacts();
/* init base; if probs given check that they add up to 1000,
otherwise compute probs; shuffle descriptions */
end = TOTAL_OBJS;
first = 0;
while( first < end ) {
acls = objects[first].oc_class;
last = first+1;
while (last < end && objects[last].oc_class == acls) last++;
i = letindex(acls);
if ((!i && acls != ILLOBJ_CLASS && acls != VENOM_CLASS) ||
bases[i] != 0)
error("initialization error for object class %d", acls);
bases[i] = first;
if (acls == GEM_CLASS) setgemprobs();
check:
sum = 0;
for(j = first; j < last; j++) sum += objects[j].oc_prob;
if(sum == 0) {
for(j = first; j < last; j++)
objects[j].oc_prob = (1000+j-first)/(last-first);
goto check;
}
if(sum != 1000)
error("init-prob error for %d (%d%%)", acls, sum);
if (OBJ_DESCR(objects[first]) != NULL &&
acls != TOOL_CLASS && acls != WEAPON_CLASS && acls != ARMOR_CLASS) {
/* shuffle, also some additional descriptions */
while (last < end && objects[last].oc_class == acls)
last++;
j = last;
if (acls == GEM_CLASS) {
if (rn2(2)) { /* change turquoise from green to blue? */
COPY_OBJ_DESCR(objects[TURQUOISE],objects[SAPPHIRE]);
}
if (rn2(2)) { /* change aquamarine from green to blue? */
COPY_OBJ_DESCR(objects[AQUAMARINE],objects[SAPPHIRE]);
}
switch (rn2(4)) { /* change fluorite from violet? */
case 0: break;
case 1: /* blue */
COPY_OBJ_DESCR(objects[FLUORITE],objects[SAPPHIRE]);
break;
case 2: /* white */
COPY_OBJ_DESCR(objects[FLUORITE],objects[DIAMOND]);
break;
case 3: /* green */
COPY_OBJ_DESCR(objects[FLUORITE],objects[EMERALD]);
break;
}
} else {
if (acls == POTION_CLASS)
j--; /* only water has a fixed description */
else if (acls == AMULET_CLASS ||
acls == SCROLL_CLASS ||
acls == SPBOOK_CLASS)
do { j--; }
while (!objects[j].oc_magic || objects[j].oc_unique);
/* non-magical amulets, scrolls, and spellbooks
* (ex. imitation Amulets, blank, scrolls of mail)
* and one-of-a-kind magical artifacts at the end of
* their class in objects[] have fixed descriptions.
*/
shuffle(first, --j, TRUE);
}
}
first = last;
}
/* shuffle the helmets */
shuffle(HELMET, HELM_OF_TELEPATHY, FALSE);
/* shuffle the gloves */
shuffle(LEATHER_GLOVES, GAUNTLETS_OF_DEXTERITY, FALSE);
/* shuffle the cloaks */
shuffle(CLOAK_OF_PROTECTION, CLOAK_OF_DISPLACEMENT, FALSE);
/* shuffle the boots [if they change, update find_skates() below] */
shuffle(SPEED_BOOTS, LEVITATION_BOOTS, FALSE);
}
/* find the object index for snow boots; used [once] by slippery ice code */
int
find_skates()
{
register int i;
register const char *s;
for (i = SPEED_BOOTS; i <= LEVITATION_BOOTS; i++)
if ((s = OBJ_DESCR(objects[i])) != 0 && !strcmp(s, "snow boots"))
return i;
impossible("snow boots not found?");
return -1; /* not 0, or caller would try again each move */
}
void
oinit() /* level dependent initialization */
{
setgemprobs();
}
void
savenames(fd)
register int fd;
{
register int i;
unsigned int len;
bwrite(fd, (genericptr_t)bases, MAXOCLASSES * sizeof *bases);
bwrite(fd, (genericptr_t)disco, sizeof disco);
bwrite(fd, (genericptr_t)objects, sizeof(struct objclass) * TOTAL_OBJS);
/* as long as we use only one version of Hack we
need not save oc_name and oc_descr, but we must save
oc_uname for all objects */
for(i=0; i < TOTAL_OBJS; i++) {
if(objects[i].oc_uname) {
len = strlen(objects[i].oc_uname)+1;
bwrite(fd, (genericptr_t)&len, sizeof len);
bwrite(fd, (genericptr_t)objects[i].oc_uname, len);
}
}
}
void
restnames(fd)
register int fd;
{
register int i;
unsigned int len;
mread(fd, (genericptr_t) bases, MAXOCLASSES * sizeof *bases);
mread(fd, (genericptr_t) disco, sizeof disco);
mread(fd, (genericptr_t) objects, sizeof(struct objclass) * TOTAL_OBJS);
for(i=0; i < TOTAL_OBJS; i++) {
if (objects[i].oc_uname) {
mread(fd, (genericptr_t) &len, sizeof len);
objects[i].oc_uname = (char *) alloc(len);
mread(fd, (genericptr_t)objects[i].oc_uname, len);
}
}
}
void
discover_object(oindx, mark_as_known)
register int oindx;
boolean mark_as_known;
{
if (!objects[oindx].oc_name_known) {
register int dindx, acls = objects[oindx].oc_class;
/* Loop thru disco[] 'til we find the target (which may have been
uname'd) or the next open slot; one or the other will be found
before we reach the next class...
*/
for (dindx = bases[letindex(acls)]; disco[dindx] != 0; dindx++)
if (disco[dindx] == oindx) break;
disco[dindx] = oindx;
if (mark_as_known) {
objects[oindx].oc_name_known = 1;
exercise(A_WIS, TRUE);
}
}
}
/* if a class name has been cleared, we may need to purge it from disco[] */
void
undiscover_object(oindx)
register int oindx;
{
if (!objects[oindx].oc_name_known) {
register int dindx, acls = objects[oindx].oc_class;
register boolean found = FALSE;
/* find the object; shift those behind it forward one slot */
for (dindx = bases[letindex(acls)];
dindx <= NROFOBJECTS && disco[dindx] != 0
&& objects[dindx].oc_class == acls; dindx++)
if (found)
disco[dindx-1] = disco[dindx];
else if (disco[dindx] == oindx)
found = TRUE;
/* clear last slot */
if (found) disco[dindx-1] = 0;
else impossible("named object not in disco");
}
}
static boolean
interesting_to_discover(i)
register int i;
{
return objects[i].oc_uname != NULL ||
(objects[i].oc_name_known && OBJ_DESCR(objects[i]) != NULL);
}
int
dodiscovered() /* free after Robert Viduya */
{
register int i, dis;
int ct = 0;
char class = -1;
winid tmpwin;
tmpwin = create_nhwindow(NHW_MENU);
putstr(tmpwin, 0, "Discoveries");
putstr(tmpwin, 0, "");
for (i = 0; i <= NROFOBJECTS; i++) {
if ((dis = disco[i]) && interesting_to_discover(dis)) {
ct++;
if (objects[dis].oc_class != class) {
class = objects[dis].oc_class;
putstr(tmpwin, ATR_INVERSE, let_to_name(class, FALSE));
}
putstr(tmpwin, 0, typename(dis));
}
}
if (ct == 0) {
You("haven't discovered anything yet...");
} else
display_nhwindow(tmpwin, TRUE);
destroy_nhwindow(tmpwin);
return 0;
}
/*o_init.c*/