Source:NetHack 3.6.0/src/o init.c

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/* NetHack 3.6	o_init.c	$NHDT-Date: 1446892449 2015/11/07 10:34:09 $  $NHDT-Branch: master $:$NHDT-Revision: 1.20 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* NetHack may be freely redistributed.  See license for details. */

#include "hack.h"
#include "lev.h" /* save & restore info */

STATIC_DCL void FDECL(setgemprobs, (d_level *));
STATIC_DCL void FDECL(shuffle, (int, int, BOOLEAN_P));
STATIC_DCL void NDECL(shuffle_all);
STATIC_DCL boolean FDECL(interesting_to_discover, (int));
STATIC_DCL char *FDECL(oclass_to_name, (CHAR_P, char *));

static NEARDATA short disco[NUM_OBJECTS] = DUMMY;

#ifdef USE_TILES
STATIC_DCL void NDECL(shuffle_tiles);
extern short glyph2tile[]; /* from tile.c */

/* Shuffle tile assignments to match descriptions, so a red potion isn't
* displayed with a blue tile and so on.
*
* Tile assignments are not saved, and shouldn't be so that a game can
* be resumed on an otherwise identical non-tile-using binary, so we have
* to reshuffle the assignments from oc_descr_idx information when a game
* is restored.  So might as well do that the first time instead of writing
* another routine.
*/
STATIC_OVL void
shuffle_tiles()
{
int i;
short tmp_tilemap[NUM_OBJECTS];

for (i = 0; i < NUM_OBJECTS; i++)
tmp_tilemap[i] = glyph2tile[objects[i].oc_descr_idx + GLYPH_OBJ_OFF];

for (i = 0; i < NUM_OBJECTS; i++)
glyph2tile[i + GLYPH_OBJ_OFF] = tmp_tilemap[i];
}
#endif /* USE_TILES */

STATIC_OVL void
setgemprobs(dlev)
d_level *dlev;
{
int j, first, lev;

if (dlev)
lev = (ledger_no(dlev) > maxledgerno()) ? maxledgerno()
: ledger_no(dlev);
else
lev = 0;
first = bases[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]) == (char *) 0) {
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 = (171 + j - first) / (LAST_GEM + 1 - first);
}

/* shuffle descriptions on objects o_low to o_high */
STATIC_OVL void
shuffle(o_low, o_high, domaterial)
int o_low, o_high;
boolean domaterial;
{
int i, j, num_to_shuffle;
short sw;
int color;

for (num_to_shuffle = 0, j = o_low; j <= o_high; j++)
if (!objects[j].oc_name_known)
num_to_shuffle++;
if (num_to_shuffle < 2)
return;

for (j = o_low; j <= o_high; j++) {
if (objects[j].oc_name_known)
continue;
do
i = j + rn2(o_high - j + 1);
while (objects[i].oc_name_known);
sw = objects[j].oc_descr_idx;
objects[j].oc_descr_idx = objects[i].oc_descr_idx;
objects[i].oc_descr_idx = sw;
sw = objects[j].oc_tough;
objects[j].oc_tough = objects[i].oc_tough;
objects[i].oc_tough = sw;
color = objects[j].oc_color;
objects[j].oc_color = objects[i].oc_color;
objects[i].oc_color = color;

/* 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, first, last, sum;
register char oclass;
#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 < MAXOCLASSES; i++)
bases[i] = 0;
/* initialize object descriptions */
for (i = 0; i < NUM_OBJECTS; i++)
objects[i].oc_name_idx = objects[i].oc_descr_idx = i;
/* init base; if probs given check that they add up to 1000,
otherwise compute probs */
first = 0;
while (first < NUM_OBJECTS) {
oclass = objects[first].oc_class;
last = first + 1;
while (last < NUM_OBJECTS && objects[last].oc_class == oclass)
last++;
bases[(int) oclass] = first;

if (oclass == GEM_CLASS) {
setgemprobs((d_level *) 0);

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;
}
}
check:
sum = 0;
for (i = first; i < last; i++)
sum += objects[i].oc_prob;
if (sum == 0) {
for (i = first; i < last; i++)
objects[i].oc_prob = (1000 + i - first) / (last - first);
goto check;
}
if (sum != 1000)
error("init-prob error for class %d (%d%%)", oclass, sum);
first = last;
}
/* shuffle descriptions */
shuffle_all();
#ifdef USE_TILES
shuffle_tiles();
#endif
objects[WAN_NOTHING].oc_dir = rn2(2) ? NODIR : IMMEDIATE;
}

/* retrieve the range of objects that otyp shares descriptions with */
void
obj_shuffle_range(otyp, lo_p, hi_p)
int otyp;         /* input: representative item */
int *lo_p, *hi_p; /* output: range that item belongs among */
{
int i, ocls = objects[otyp].oc_class;

/* default is just the object itself */
*lo_p = *hi_p = otyp;

switch (ocls) {
case ARMOR_CLASS:
if (otyp >= HELMET && otyp <= HELM_OF_TELEPATHY)
*lo_p = HELMET, *hi_p = HELM_OF_TELEPATHY;
else if (otyp >= LEATHER_GLOVES && otyp <= GAUNTLETS_OF_DEXTERITY)
*lo_p = LEATHER_GLOVES, *hi_p = GAUNTLETS_OF_DEXTERITY;
else if (otyp >= CLOAK_OF_PROTECTION && otyp <= CLOAK_OF_DISPLACEMENT)
*lo_p = CLOAK_OF_PROTECTION, *hi_p = CLOAK_OF_DISPLACEMENT;
else if (otyp >= SPEED_BOOTS && otyp <= LEVITATION_BOOTS)
*lo_p = SPEED_BOOTS, *hi_p = LEVITATION_BOOTS;
break;
case POTION_CLASS:
/* potion of water has the only fixed description */
*lo_p = bases[POTION_CLASS];
*hi_p = POT_WATER - 1;
break;
case AMULET_CLASS:
case SCROLL_CLASS:
case SPBOOK_CLASS:
/* exclude non-magic types and also unique ones */
*lo_p = bases[ocls];
for (i = *lo_p; objects[i].oc_class == ocls; i++)
if (objects[i].oc_unique || !objects[i].oc_magic)
break;
*hi_p = i - 1;
break;
case RING_CLASS:
case WAND_CLASS:
case VENOM_CLASS:
/* entire class */
*lo_p = bases[ocls];
for (i = *lo_p; objects[i].oc_class == ocls; i++)
continue;
*hi_p = i - 1;
break;
}

/* artifact checking might ask about item which isn't part of any range
but fell within the classes that do have ranges specified above */
if (otyp < *lo_p || otyp > *hi_p)
*lo_p = *hi_p = otyp;
return;
}

/* randomize object descriptions */
STATIC_OVL void
shuffle_all()
{
/* entire classes; obj_shuffle_range() handles their exceptions */
static char shuffle_classes[] = {
AMULET_CLASS, POTION_CLASS, RING_CLASS,  SCROLL_CLASS,
SPBOOK_CLASS, WAND_CLASS,   VENOM_CLASS,
};
/* sub-class type ranges (one item from each group) */
static short shuffle_types[] = {
HELMET, LEATHER_GLOVES, CLOAK_OF_PROTECTION, SPEED_BOOTS,
};
int first, last, idx;

/* do whole classes (amulets, &c) */
for (idx = 0; idx < SIZE(shuffle_classes); idx++) {
obj_shuffle_range(bases[(int) shuffle_classes[idx]], &first, &last);
shuffle(first, last, TRUE);
}
/* do type ranges (helms, &c) */
for (idx = 0; idx < SIZE(shuffle_types); idx++) {
obj_shuffle_range(shuffle_types[idx], &first, &last);
shuffle(first, last, FALSE);
}
return;
}

/* 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 */
}

/* level dependent initialization */
void
oinit()
{
setgemprobs(&u.uz);
}

void
savenames(fd, mode)
int fd, mode;
{
register int i;
unsigned int len;

if (perform_bwrite(mode)) {
bwrite(fd, (genericptr_t) bases, sizeof bases);
bwrite(fd, (genericptr_t) disco, sizeof disco);
bwrite(fd, (genericptr_t) objects,
sizeof(struct objclass) * NUM_OBJECTS);
}
/* 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 < NUM_OBJECTS; i++)
if (objects[i].oc_uname) {
if (perform_bwrite(mode)) {
len = strlen(objects[i].oc_uname) + 1;
bwrite(fd, (genericptr_t) &len, sizeof len);
bwrite(fd, (genericptr_t) objects[i].oc_uname, len);
}
if (release_data(mode)) {
free((genericptr_t) objects[i].oc_uname);
objects[i].oc_uname = 0;
}
}
}

void
restnames(fd)
register int fd;
{
register int i;
unsigned int len;

mread(fd, (genericptr_t) bases, sizeof bases);
mread(fd, (genericptr_t) disco, sizeof disco);
mread(fd, (genericptr_t) objects, sizeof(struct objclass) * NUM_OBJECTS);
for (i = 0; i < NUM_OBJECTS; 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);
}
#ifdef USE_TILES
shuffle_tiles();
#endif
}

void
discover_object(oindx, mark_as_known, credit_hero)
register int oindx;
boolean mark_as_known;
boolean credit_hero;
{
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[acls]; disco[dindx] != 0; dindx++)
if (disco[dindx] == oindx)
break;
disco[dindx] = oindx;

if (mark_as_known) {
objects[oindx].oc_name_known = 1;
if (credit_hero)
exercise(A_WIS, TRUE);
}
if (moves > 1L)
update_inventory();
}
}

/* 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[acls]; dindx < NUM_OBJECTS && 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");
update_inventory();
}
}

STATIC_OVL boolean
interesting_to_discover(i)
register int i;
{
/* Pre-discovered objects are now printed with a '*' */
return (boolean) (objects[i].oc_uname != (char *) 0
|| (objects[i].oc_name_known
&& OBJ_DESCR(objects[i]) != (char *) 0));
}

/* items that should stand out once they're known */
static short uniq_objs[] = {
AMULET_OF_YENDOR, SPE_BOOK_OF_THE_DEAD, CANDELABRUM_OF_INVOCATION,
BELL_OF_OPENING,
};

/* the '\' command - show discovered object types */
int
dodiscovered() /* free after Robert Viduya */
{
register int i, dis;
int ct = 0;
char *s, oclass, prev_class, classes[MAXOCLASSES], buf[BUFSZ];
winid tmpwin;

tmpwin = create_nhwindow(NHW_MENU);
putstr(tmpwin, 0, "Discoveries");
putstr(tmpwin, 0, "");

/* gather "unique objects" into a pseudo-class; note that they'll
also be displayed individually within their regular class */
for (i = dis = 0; i < SIZE(uniq_objs); i++)
if (objects[uniq_objs[i]].oc_name_known) {
if (!dis++)
putstr(tmpwin, iflags.menu_headings, "Unique items");
Sprintf(buf, "  %s", OBJ_NAME(objects[uniq_objs[i]]));
putstr(tmpwin, 0, buf);
++ct;
}
/* display any known artifacts as another pseudo-class */
ct += disp_artifact_discoveries(tmpwin);

/* several classes are omitted from packorder; one is of interest here */
Strcpy(classes, flags.inv_order);
if (!index(classes, VENOM_CLASS)) {
s = eos(classes);
*s++ = VENOM_CLASS;
*s = '\0';
}

for (s = classes; *s; s++) {
oclass = *s;
prev_class = oclass + 1; /* forced different from oclass */
for (i = bases[(int) oclass];
i < NUM_OBJECTS && objects[i].oc_class == oclass; i++) {
if ((dis = disco[i]) != 0 && interesting_to_discover(dis)) {
ct++;
if (oclass != prev_class) {
putstr(tmpwin, iflags.menu_headings,
let_to_name(oclass, FALSE, FALSE));
prev_class = oclass;
}
Sprintf(buf, "%s %s",
(objects[dis].oc_pre_discovered ? "*" : " "),
obj_typename(dis));
putstr(tmpwin, 0, buf);
}
}
}
if (ct == 0) {
You("haven't discovered anything yet...");
} else
display_nhwindow(tmpwin, TRUE);
destroy_nhwindow(tmpwin);

return 0;
}

/* lower case let_to_name() output, which differs from def_oc_syms[].name */
STATIC_OVL char *
oclass_to_name(oclass, buf)
char oclass;
char *buf;
{
char *s;

Strcpy(buf, let_to_name(oclass, FALSE, FALSE));
for (s = buf; *s; ++s)
*s = lowc(*s);
return buf;
}

/* the '`' command - show discovered object types for one class */
int
doclassdisco()
{
static NEARDATA const char
prompt[] = "View discoveries for which sort of objects?",
havent_discovered_any[] = "haven't discovered any %s yet.",
unique_items[] = "unique items",
artifact_items[] = "artifacts";
char *s, c, oclass, menulet, allclasses[MAXOCLASSES],
discosyms[2 + MAXOCLASSES + 1], buf[BUFSZ];
int i, ct, dis, xtras;
boolean traditional;
winid tmpwin;
anything any;
menu_item *pick_list = 0;

discosyms[0] = '\0';
traditional = (flags.menu_style == MENU_TRADITIONAL
|| flags.menu_style == MENU_COMBINATION);
tmpwin = !traditional ? create_nhwindow(NHW_MENU) : WIN_ERR;
any = zeroany;
menulet = 'a';

/* check whether we've discovered any unique objects */
for (i = 0; i < SIZE(uniq_objs); i++)
if (objects[uniq_objs[i]].oc_name_known) {
Strcat(discosyms, "u");
if (!traditional) {
any.a_int = 'u';
add_menu(tmpwin, NO_GLYPH, &any, menulet++, 0, ATR_NONE,
unique_items, MENU_UNSELECTED);
}
break;
}

/* check whether we've discovered any artifacts */
if (disp_artifact_discoveries(WIN_ERR) > 0) {
Strcat(discosyms, "a");
if (!traditional) {
any.a_int = 'a';
add_menu(tmpwin, NO_GLYPH, &any, menulet++, 0, ATR_NONE,
artifact_items, MENU_UNSELECTED);
}
}

/* collect classes with discoveries, in packorder ordering; several
classes are omitted from packorder and one is of interest here */
Strcpy(allclasses, flags.inv_order);
if (!index(allclasses, VENOM_CLASS))
Sprintf(eos(allclasses), "%c", VENOM_CLASS);
/* construct discosyms[] */
for (s = allclasses; *s; ++s) {
oclass = *s;
c = def_oc_syms[(int) oclass].sym;
for (i = bases[(int) oclass];
i < NUM_OBJECTS && objects[i].oc_class == oclass; ++i)
if ((dis = disco[i]) != 0 && interesting_to_discover(dis)) {
if (!index(discosyms, c)) {
Sprintf(eos(discosyms), "%c", c);
if (!traditional) {
any.a_int = c;
add_menu(tmpwin, NO_GLYPH, &any, menulet++, c,
ATR_NONE, oclass_to_name(oclass, buf),
MENU_UNSELECTED);
}
}
}
}

/* there might not be anything for us to do... */
if (!discosyms[0]) {
You(havent_discovered_any, "items");
if (tmpwin != WIN_ERR)
destroy_nhwindow(tmpwin);
return 0;
}

/* have player choose a class */
c = '\0'; /* class not chosen yet */
if (traditional) {
/* we'll prompt even if there's only one viable class; we add all
nonviable classes as unseen acceptable choices so player can ask
for discoveries of any class whether it has discoveries or not */
for (s = allclasses, xtras = 0; *s; ++s) {
c = def_oc_syms[(int) *s].sym;
if (!index(discosyms, c)) {
if (!xtras++)
Sprintf(eos(discosyms), "%c", '\033');
Sprintf(eos(discosyms), "%c", c);
}
}
/* get the class (via its symbol character) */
c = yn_function(prompt, discosyms, '\0');
savech(c);
if (!c)
clear_nhwindow(WIN_MESSAGE);
} else {
/* menustyle:full or menustyle:partial */
if (!discosyms[1] && flags.menu_style == MENU_PARTIAL) {
/* only one class; menustyle:partial normally jumps past class
filtering straight to final menu so skip class filter here */
c = discosyms[0];
} else {
/* more than one choice, or menustyle:full which normally has
an intermediate class selection menu before the final menu */
end_menu(tmpwin, prompt);
i = select_menu(tmpwin, PICK_ONE, &pick_list);
if (i > 0) {
c = pick_list[0].item.a_int;
free((genericptr_t) pick_list);
} /* else c stays 0 */
}
destroy_nhwindow(tmpwin);
}
if (!c)
return 0; /* player declined to make a selection */

/*
* show discoveries for object class c
*/
tmpwin = create_nhwindow(NHW_MENU);
ct = 0;
switch (c) {
case 'u':
putstr(tmpwin, iflags.menu_headings,
upstart(strcpy(buf, unique_items)));
for (i = 0; i < SIZE(uniq_objs); i++)
if (objects[uniq_objs[i]].oc_name_known) {
Sprintf(buf, "  %s", OBJ_NAME(objects[uniq_objs[i]]));
putstr(tmpwin, 0, buf);
++ct;
}
if (!ct)
You(havent_discovered_any, unique_items);
break;
case 'a':
/* disp_artifact_discoveries() includes a header */
ct = disp_artifact_discoveries(tmpwin);
if (!ct)
You(havent_discovered_any, artifact_items);
break;
default:
oclass = def_char_to_objclass(c);
Sprintf(buf, "Discovered %s", let_to_name(oclass, FALSE, FALSE));
putstr(tmpwin, iflags.menu_headings, buf);
for (i = bases[(int) oclass];
i < NUM_OBJECTS && objects[i].oc_class == oclass; ++i) {
if ((dis = disco[i]) != 0 && interesting_to_discover(dis)) {
Sprintf(buf, "%s %s",
objects[dis].oc_pre_discovered ? "*" : " ",
obj_typename(dis));
putstr(tmpwin, 0, buf);
++ct;
}
}
if (!ct)
You(havent_discovered_any, oclass_to_name(oclass, buf));
break;
}
if (ct)
display_nhwindow(tmpwin, TRUE);
destroy_nhwindow(tmpwin);
return 0;
}

/* put up nameable subset of discoveries list as a menu */
void
rename_disco()
{
register int i, dis;
int ct = 0, mn = 0, sl;
char *s, oclass, prev_class;
winid tmpwin;
anything any;
menu_item *selected = 0;

any = zeroany;
tmpwin = create_nhwindow(NHW_MENU);
start_menu(tmpwin);

/*
* Skip the "unique objects" section (each will appear within its
* regular class if it is nameable) and the artifacts section.
* We assume that classes omitted from packorder aren't nameable
* so we skip venom too.
*/

/* for each class, show discoveries in that class */
for (s = flags.inv_order; *s; s++) {
oclass = *s;
prev_class = oclass + 1; /* forced different from oclass */
for (i = bases[(int) oclass];
i < NUM_OBJECTS && objects[i].oc_class == oclass; i++) {
dis = disco[i];
if (!dis || !interesting_to_discover(dis))
continue;
ct++;
if (!objtyp_is_callable(dis))
continue;
mn++;

if (oclass != prev_class) {
any.a_int = 0;
add_menu(tmpwin, NO_GLYPH, &any, ' ', iflags.menu_headings,
ATR_NONE, let_to_name(oclass, FALSE, FALSE),
MENU_UNSELECTED);
prev_class = oclass;
}
any.a_int = dis;
add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
obj_typename(dis), MENU_UNSELECTED);
}
}
if (ct == 0) {
You("haven't discovered anything yet...");
} else if (mn == 0) {
pline("None of your discoveries can be assigned names...");
} else {
end_menu(tmpwin, "Pick an object type to name");
dis = STRANGE_OBJECT;
sl = select_menu(tmpwin, PICK_ONE, &selected);
if (sl > 0) {
dis = selected[0].item.a_int;
free((genericptr_t) selected);
}
if (dis != STRANGE_OBJECT) {
struct obj odummy;

odummy = zeroobj;
odummy.otyp = dis;
odummy.oclass = objects[dis].oc_class;
odummy.quan = 1L;
odummy.known = !objects[dis].oc_uses_known;
odummy.dknown = 1;
docall(&odummy);
}
}
destroy_nhwindow(tmpwin);
return;
}

/*o_init.c*/