games/hack/hack.topl.c

   1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
   2 /* hack.topl.c - version 1.0.2 */
   3 /* $FreeBSD: src/games/hack/hack.topl.c,v 1.3 1999/11/16 02:57:12 billf Exp $ */
   4 /* $DragonFly: src/games/hack/hack.topl.c,v 1.3 2006/08/21 19:45:32 pavalos Exp $ */
   5
   6 #include "hack.h"
   7 extern int CO;
   8
   9 char toplines[BUFSZ];
  10 xchar tlx, tly;                 /* set by pline; used by addtopl */
  11
  12 struct topl {
  13         struct topl *next_topl;
  14         char *topl_text;
  15 } *old_toplines, *last_redone_topl;
  16 #define OTLMAX  20              /* max nr of old toplines remembered */
  17
  18 static void     redotoplin(void);
  19 static void     xmore(const char *);
  20
  21 int
  22 doredotopl(void)
  23 {
  24         if(last_redone_topl)
  25                 last_redone_topl = last_redone_topl->next_topl;
  26         if(!last_redone_topl)
  27                 last_redone_topl = old_toplines;
  28         if(last_redone_topl){
  29                 strcpy(toplines, last_redone_topl->topl_text);
  30         }
  31         redotoplin();
  32         return(0);
  33 }
  34
  35 static void
  36 redotoplin(void)
  37 {
  38         home();
  39         if(index(toplines, '\n')) cl_end();
  40         putstr(toplines);
  41         cl_end();
  42         tlx = curx;
  43         tly = cury;
  44         flags.toplin = 1;
  45         if(tly > 1)
  46                 more();
  47 }
  48
  49 void
  50 remember_topl(void)
  51 {
  52 struct topl *tl;
  53 int cnt = OTLMAX;
  54         if(last_redone_topl &&
  55            !strcmp(toplines, last_redone_topl->topl_text)) return;
  56         if(old_toplines &&
  57            !strcmp(toplines, old_toplines->topl_text)) return;
  58         last_redone_topl = 0;
  59         tl = (struct topl *)
  60                 alloc((unsigned)(strlen(toplines) + sizeof(struct topl) + 1));
  61         tl->next_topl = old_toplines;
  62         tl->topl_text = (char *)(tl + 1);
  63         strcpy(tl->topl_text, toplines);
  64         old_toplines = tl;
  65         while(cnt && tl){
  66                 cnt--;
  67                 tl = tl->next_topl;
  68         }
  69         if(tl && tl->next_topl){
  70                 free((char *) tl->next_topl);
  71                 tl->next_topl = 0;
  72         }
  73 }
  74
  75 void
  76 addtopl(const char *s)
  77 {
  78         curs(tlx,tly);
  79         if(tlx + (int)strlen(s) > CO) putsym('\n');
  80         putstr(s);
  81         tlx = curx;
  82         tly = cury;
  83         flags.toplin = 1;
  84 }
  85
  86 static void
  87 xmore(const char *s)    /* allowed chars besides space/return */
  88 {
  89         if(flags.toplin) {
  90                 curs(tlx, tly);
  91                 if(tlx + 8 > CO) putsym('\n'), tly++;
  92         }
  93
  94         if(flags.standout)
  95                 standoutbeg();
  96         putstr("--More--");
  97         if(flags.standout)
  98                 standoutend();
  99
 100         xwaitforspace(s);
 101         if(flags.toplin && tly > 1) {
 102                 home();
 103                 cl_end();
 104                 docorner(1, tly-1);
 105         }
 106         flags.toplin = 0;
 107 }
 108
 109 void
 110 more(void)
 111 {
 112         xmore("");
 113 }
 114
 115 void
 116 cmore(const char *s)
 117 {
 118         xmore(s);
 119 }
 120
 121 void
 122 clrlin(void)
 123 {
 124         if(flags.toplin) {
 125                 home();
 126                 cl_end();
 127                 if(tly > 1) docorner(1, tly-1);
 128                 remember_topl();
 129         }
 130         flags.toplin = 0;
 131 }
 132
 133 void
 134 pline(const char *line, ...)
 135 {
 136         va_list ap;
 137         va_start(ap, line);
 138         vpline(line, ap);
 139         va_end(ap);
 140 }
 141
 142 /*VARARGS1*/
 143 void
 144 vpline(const char *line, va_list ap)
 145 {
 146         char pbuf[BUFSZ];
 147         char *bp = pbuf, *tl;
 148         int n,n0;
 149
 150         if(!line || !*line) return;
 151         if(!index(line, '%')) strcpy(pbuf,line); else
 152         vsprintf(pbuf, line, ap);
 153         if(flags.toplin == 1 && !strcmp(pbuf, toplines)) return;
 154         nscr();         /* %% */
 155
 156         /* If there is room on the line, print message on same line */
 157         /* But messages like "You die..." deserve their own line */
 158         n0 = strlen(bp);
 159         if(flags.toplin == 1 && tly == 1 &&
 160             n0 + (int)strlen(toplines) + 3 < CO-8 && /* room for --More-- */
 161             strncmp(bp, "You ", 4)) {
 162                 strcat(toplines, "  ");
 163                 strcat(toplines, bp);
 164                 tlx += 2;
 165                 addtopl(bp);
 166                 return;
 167         }
 168         if(flags.toplin == 1) more();
 169         remember_topl();
 170         toplines[0] = 0;
 171         while(n0){
 172                 if(n0 >= CO){
 173                         /* look for appropriate cut point */
 174                         n0 = 0;
 175                         for(n = 0; n < CO; n++) if(bp[n] == ' ')
 176                                 n0 = n;
 177                         if(!n0) for(n = 0; n < CO-1; n++)
 178                                 if(!letter(bp[n])) n0 = n;
 179                         if(!n0) n0 = CO-2;
 180                 }
 181                 strncpy((tl = eos(toplines)), bp, n0);
 182                 tl[n0] = 0;
 183                 bp += n0;
 184
 185                 /* remove trailing spaces, but leave one */
 186                 while(n0 > 1 && tl[n0-1] == ' ' && tl[n0-2] == ' ')
 187                         tl[--n0] = 0;
 188
 189                 n0 = strlen(bp);
 190                 if(n0 && tl[0]) strcat(tl, "\n");
 191         }
 192         redotoplin();
 193 }
 194
 195 void
 196 putsym(char c)
 197 {
 198         switch(c) {
 199         case '\b':
 200                 backsp();
 201                 return;
 202         case '\n':
 203                 curx = 1;
 204                 cury++;
 205                 if(cury > tly) tly = cury;
 206                 break;
 207         default:
 208                 if(curx == CO)
 209                         putsym('\n');   /* 1 <= curx <= CO; avoid CO */
 210                 else
 211                         curx++;
 212         }
 213         putchar(c);
 214 }
 215
 216 void
 217 putstr(const char *s)
 218 {
 219         while(*s) putsym(*s++);
 220 }