hangman/getguess.c

   1 /*      $NetBSD: getguess.c,v 1.6 1997/05/23 23:27:40 jtc 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 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)getguess.c  8.1 (Berkeley) 5/31/93";
  39 #else
  40 static char rcsid[] = "$NetBSD: getguess.c,v 1.6 1997/05/23 23:27:40 jtc Exp $";
  41 #endif
  42 #endif /* not lint */
  43
  44 #include <sys/ttydefaults.h>
  45 #include "hangman.h"
  46
  47 /*
  48  * getguess:
  49  *      Get another guess
  50  */
  51 getguess()
  52 {
  53         register int    i;
  54         register int    ch;
  55         register bool   correct;
  56
  57         leaveok(stdscr, FALSE);
  58         for (;;) {
  59                 move(PROMPTY, PROMPTX + sizeof "Guess: ");
  60                 refresh();
  61                 ch = readch();
  62                 if (isalpha(ch)) {
  63                         if (isupper(ch))
  64                                 ch = tolower(ch);
  65                         if (Guessed[ch - 'a'])
  66                                 mvprintw(MESGY, MESGX, "Already guessed '%c'", ch);
  67                         else
  68                                 break;
  69                 }
  70                 else if (ch == CTRL('D'))
  71                         die();
  72                 else
  73                         mvprintw(MESGY, MESGX, "Not a valid guess: '%s'",
  74                                 unctrl(ch));
  75         }
  76         leaveok(stdscr, TRUE);
  77         move(MESGY, MESGX);
  78         clrtoeol();
  79
  80         Guessed[ch - 'a'] = TRUE;
  81         correct = FALSE;
  82         for (i = 0; Word[i] != '\0'; i++)
  83                 if (Word[i] == ch) {
  84                         Known[i] = ch;
  85                         correct = TRUE;
  86                 }
  87         if (!correct)
  88                 Errors++;
  89 }
  90
  91 /*
  92  * readch;
  93  *      Read a character from the input
  94  */
  95 readch()
  96 {
  97         register int    cnt, r;
  98         auto char       ch;
  99
 100         cnt = 0;
 101         for (;;) {
 102                 if (read(0, &ch, sizeof ch) <= 0)
 103                 {
 104                         if (++cnt > 100)
 105                                 die();
 106                 }
 107                 else if (ch == CTRL('L')) {
 108                         wrefresh(curscr);
 109                 }
 110                 else
 111                         return ch;
 112         }
 113 }