hangman/getguess.c

   1 /*      $NetBSD: getguess.c,v 1.7 1997/10/11 01:16:29 lukem Exp $       */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 #ifndef lint
  38 #if 0
  39 static char sccsid[] = "@(#)getguess.c  8.1 (Berkeley) 5/31/93";
  40 #else
  41 __RCSID("$NetBSD: getguess.c,v 1.7 1997/10/11 01:16:29 lukem Exp $");
  42 #endif
  43 #endif /* not lint */
  44
  45 #include <sys/ttydefaults.h>
  46 #include "hangman.h"
  47
  48 /*
  49  * getguess:
  50  *      Get another guess
  51  */
  52 void
  53 getguess()
  54 {
  55         int i;
  56         int ch;
  57         bool correct;
  58
  59         leaveok(stdscr, FALSE);
  60         for (;;) {
  61                 move(PROMPTY, PROMPTX + sizeof "Guess: ");
  62                 refresh();
  63                 ch = readch();
  64                 if (isalpha(ch)) {
  65                         if (isupper(ch))
  66                                 ch = tolower(ch);
  67                         if (Guessed[ch - 'a'])
  68                                 mvprintw(MESGY, MESGX, "Already guessed '%c'",
  69                                     ch);
  70                         else
  71                                 break;
  72                 } else
  73                         if (ch == CTRL('D'))
  74                                 die(0);
  75                         else
  76                                 mvprintw(MESGY, MESGX,
  77                                     "Not a valid guess: '%s'", unctrl(ch));
  78         }
  79         leaveok(stdscr, TRUE);
  80         move(MESGY, MESGX);
  81         clrtoeol();
  82
  83         Guessed[ch - 'a'] = TRUE;
  84         correct = FALSE;
  85         for (i = 0; Word[i] != '\0'; i++)
  86                 if (Word[i] == ch) {
  87                         Known[i] = ch;
  88                         correct = TRUE;
  89                 }
  90         if (!correct)
  91                 Errors++;
  92 }
  93 /*
  94  * readch;
  95  *      Read a character from the input
  96  */
  97 int
  98 readch()
  99 {
 100         int cnt;
 101         char ch;
 102
 103         cnt = 0;
 104         for (;;) {
 105                 if (read(0, &ch, sizeof ch) <= 0) {
 106                         if (++cnt > 100)
 107                                 die(0);
 108                 } else
 109                         if (ch == CTRL('L')) {
 110                                 wrefresh(curscr);
 111                         } else
 112                                 return ch;
 113         }
 114 }