hangman/getguess.c

   1 /*
   2  * Copyright (c) 1983 Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef lint
  35 /*static char sccsid[] = "from: @(#)getguess.c  5.4 (Berkeley) 6/1/90";*/
  36 static char rcsid[] = "$Id: getguess.c,v 1.2 1993/08/01 18:54:26 mycroft Exp $";
  37 #endif /* not lint */
  38
  39 # include       "hangman.h"
  40
  41 /*
  42  * getguess:
  43  *      Get another guess
  44  */
  45 getguess()
  46 {
  47         register int    i;
  48         register int    ch;
  49         register bool   correct;
  50
  51         leaveok(stdscr, FALSE);
  52         for (;;) {
  53                 move(PROMPTY, PROMPTX + sizeof "Guess: ");
  54                 refresh();
  55                 ch = readch();
  56                 if (isalpha(ch)) {
  57                         if (isupper(ch))
  58                                 ch = tolower(ch);
  59                         if (Guessed[ch - 'a'])
  60                                 mvprintw(MESGY, MESGX, "Already guessed '%c'", ch);
  61                         else
  62                                 break;
  63                 }
  64                 else if (ch == CTRL('D'))
  65                         die();
  66                 else
  67                         mvprintw(MESGY, MESGX, "Not a valid guess: '%s'",
  68                                 unctrl(ch));
  69         }
  70         leaveok(stdscr, TRUE);
  71         move(MESGY, MESGX);
  72         clrtoeol();
  73
  74         Guessed[ch - 'a'] = TRUE;
  75         correct = FALSE;
  76         for (i = 0; Word[i] != '\0'; i++)
  77                 if (Word[i] == ch) {
  78                         Known[i] = ch;
  79                         correct = TRUE;
  80                 }
  81         if (!correct)
  82                 Errors++;
  83 }
  84
  85 /*
  86  * readch;
  87  *      Read a character from the input
  88  */
  89 readch()
  90 {
  91         register int    cnt, r;
  92         auto char       ch;
  93
  94         cnt = 0;
  95         for (;;) {
  96                 if (read(0, &ch, sizeof ch) <= 0)
  97                 {
  98                         if (++cnt > 100)
  99                                 die();
 100                 }
 101                 else if (ch == CTRL('L')) {
 102                         wrefresh(curscr);
 103                         mvcur(0, 0, curscr->_cury, curscr->_curx);
 104                 }
 105                 else
 106                         return ch;
 107         }
 108 }