hack/hack.o_init.c

   1 /*
   2  * Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985.
   3  */
   4
   5 #ifndef lint
   6 static char rcsid[] = "$NetBSD: hack.o_init.c,v 1.3 1995/03/23 08:31:06 cgd Exp $";
   7 #endif /* not lint */
   8
   9 #include        "config.h"              /* for typedefs */
  10 #include        "def.objects.h"
  11 #include        "hack.onames.h"         /* for LAST_GEM */
  12 extern char *index();
  13
  14 int
  15 letindex(let) register char let; {
  16 register int i = 0;
  17 register char ch;
  18         while((ch = obj_symbols[i++]) != 0)
  19                 if(ch == let) return(i);
  20         return(0);
  21 }
  22
  23 init_objects(){
  24 register int i, j, first, last, sum, end;
  25 register char let, *tmp;
  26         /* init base; if probs given check that they add up to 100,
  27            otherwise compute probs; shuffle descriptions */
  28         end = SIZE(objects);
  29         first = 0;
  30         while( first < end ) {
  31                 let = objects[first].oc_olet;
  32                 last = first+1;
  33                 while(last < end && objects[last].oc_olet == let
  34                                 && objects[last].oc_name != NULL)
  35                         last++;
  36                 i = letindex(let);
  37                 if((!i && let != ILLOBJ_SYM) || bases[i] != 0)
  38                         error("initialization error");
  39                 bases[i] = first;
  40
  41                 if(let == GEM_SYM)
  42                         setgemprobs();
  43         check:
  44                 sum = 0;
  45                 for(j = first; j < last; j++) sum += objects[j].oc_prob;
  46                 if(sum == 0) {
  47                         for(j = first; j < last; j++)
  48                             objects[j].oc_prob = (100+j-first)/(last-first);
  49                         goto check;
  50                 }
  51                 if(sum != 100)
  52                         error("init-prob error for %c", let);
  53
  54                 if(objects[first].oc_descr != NULL && let != TOOL_SYM){
  55                         /* shuffle, also some additional descriptions */
  56                         while(last < end && objects[last].oc_olet == let)
  57                                 last++;
  58                         j = last;
  59                         while(--j > first) {
  60                                 i = first + rn2(j+1-first);
  61                                 tmp = objects[j].oc_descr;
  62                                 objects[j].oc_descr = objects[i].oc_descr;
  63                                 objects[i].oc_descr = tmp;
  64                         }
  65                 }
  66                 first = last;
  67         }
  68 }
  69
  70 probtype(let) register char let; {
  71 register int i = bases[letindex(let)];
  72 register int prob = rn2(100);
  73         while((prob -= objects[i].oc_prob) >= 0) i++;
  74         if(objects[i].oc_olet != let || !objects[i].oc_name)
  75                 panic("probtype(%c) error, i=%d", let, i);
  76         return(i);
  77 }
  78
  79 setgemprobs()
  80 {
  81         register int j,first;
  82         extern xchar dlevel;
  83
  84         first = bases[letindex(GEM_SYM)];
  85
  86         for(j = 0; j < 9-dlevel/3; j++)
  87                 objects[first+j].oc_prob = 0;
  88         first += j;
  89         if(first >= LAST_GEM || first >= SIZE(objects) ||
  90             objects[first].oc_olet != GEM_SYM ||
  91             objects[first].oc_name == NULL)
  92                 printf("Not enough gems? - first=%d j=%d LAST_GEM=%d\n",
  93                         first, j, LAST_GEM);
  94         for(j = first; j < LAST_GEM; j++)
  95                 objects[j].oc_prob = (20+j-first)/(LAST_GEM-first);
  96 }
  97
  98 oinit()                 /* level dependent initialization */
  99 {
 100         setgemprobs();
 101 }
 102
 103 extern long *alloc();
 104
 105 savenames(fd) register fd; {
 106 register int i;
 107 unsigned len;
 108         bwrite(fd, (char *) bases, sizeof bases);
 109         bwrite(fd, (char *) objects, sizeof objects);
 110         /* as long as we use only one version of Hack/Quest we
 111            need not save oc_name and oc_descr, but we must save
 112            oc_uname for all objects */
 113         for(i=0; i < SIZE(objects); i++) {
 114                 if(objects[i].oc_uname) {
 115                         len = strlen(objects[i].oc_uname)+1;
 116                         bwrite(fd, (char *) &len, sizeof len);
 117                         bwrite(fd, objects[i].oc_uname, len);
 118                 }
 119         }
 120 }
 121
 122 restnames(fd) register fd; {
 123 register int i;
 124 unsigned len;
 125         mread(fd, (char *) bases, sizeof bases);
 126         mread(fd, (char *) objects, sizeof objects);
 127         for(i=0; i < SIZE(objects); i++) if(objects[i].oc_uname) {
 128                 mread(fd, (char *) &len, sizeof len);
 129                 objects[i].oc_uname = (char *) alloc(len);
 130                 mread(fd, objects[i].oc_uname, len);
 131         }
 132 }
 133
 134 dodiscovered()                          /* free after Robert Viduya */
 135 {
 136     extern char *typename();
 137     register int i, end;
 138     int ct = 0;
 139
 140     cornline(0, "Discoveries");
 141
 142     end = SIZE(objects);
 143     for (i = 0; i < end; i++) {
 144         if (interesting_to_discover (i)) {
 145             ct++;
 146             cornline(1, typename(i));
 147         }
 148     }
 149     if (ct == 0) {
 150         pline ("You haven't discovered anything yet...");
 151         cornline(3, (char *) 0);
 152     } else
 153         cornline(2, (char *) 0);
 154
 155     return(0);
 156 }
 157
 158 interesting_to_discover(i)
 159 register int i;
 160 {
 161     return(
 162         objects[i].oc_uname != NULL ||
 163          (objects[i].oc_name_known && objects[i].oc_descr != NULL)
 164     );
 165 }