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