Source:NetHack 3.6.1/src/o init.c

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Below is the full text to o_init.c from the source code of NetHack 3.6.1. To link to a particular line, write [[Source:NetHack 3.6.1/src/o_init.c#line123]], for example.

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 /* NetHack 3.6	o_init.c	$NHDT-Date: 1450318588 2015/12/17 02:16:28 $  $NHDT-Branch: NetHack-3.6.0 $:$NHDT-Revision: 1.22 $ */
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /*-Copyright (c) Robert Patrick Rankin, 2011. */
 /* NetHack may be freely redistributed.  See license for details. */

The NetHack General Public License applies to screenshots, source code and other content from NetHack.

This content was modified from the original NetHack source code distribution (by splitting up NetHack content between wiki pages, and possibly further editing). See the page history for a list of who changed it, and on what dates.

 
 #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_tiles

 /* 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 */
 

setgemprobs

 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

 /* 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;
         }
     }
 }
 

init_objects

 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;
 }
 

obj_shuffle_range

 /* 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;
 }
 

shuffle_all

 /* 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_skates

 /* 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 */
 }
 

oinit

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

savenames

 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;
             }
         }
 }
 

restnames

 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
 }
 

discover_object

 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();
     }
 }
 

undiscover_object

 /* 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();
     }
 }
 

interesting_to_discover

 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,
 };
 

dodiscovered

 /* 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))
         (void) strkitten(classes, VENOM_CLASS); /* append char to string */
 
     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;
 }
 

oclass_to_name

 /* 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;
 }
 

doclassdisco

 /* 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 = WIN_ERR;
     anything any;
     menu_item *pick_list = 0;
 
     discosyms[0] = '\0';
     traditional = (flags.menu_style == MENU_TRADITIONAL
                    || flags.menu_style == MENU_COMBINATION);
     if (!traditional) {
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
     }
     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))
         (void) strkitten(allclasses, VENOM_CLASS); /* append char to string */
     /* 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++)
                     (void) strkitten(discosyms, '\033');
                 (void) strkitten(discosyms, 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;
 }
 

rename_disco

 /* 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, 0, 0, iflags.menu_headings,
                          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*/