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 1.4 1993/11/10 15:28:25 cgd Exp $";
  37 #endif /* not lint */
  38
  39 # include       <termios.h>
  40 # include       "hangman.h"
  41
  42 /*
  43  * getguess:
  44  *      Get another guess
  45  */
  46 getguess()
  47 {
  48         register int    i;
  49         register int    ch;
  50         register bool   correct;
  51
  52         leaveok(stdscr, FALSE);
  53         for (;;) {
  54                 move(PROMPTY, PROMPTX + sizeof "Guess: ");
  55                 refresh();
  56                 ch = readch();
  57                 if (isalpha(ch)) {
  58                         if (isupper(ch))
  59                                 ch = tolower(ch);
  60                         if (Guessed[ch - 'a'])
  61                                 mvprintw(MESGY, MESGX, "Already guessed '%c'", ch);
  62                         else
  63                                 break;
  64                 }
  65                 else if (ch == CTRL('D'))
  66                         die();
  67                 else
  68                         mvprintw(MESGY, MESGX, "Not a valid guess: '%s'",
  69                                 unctrl(ch));
  70         }
  71         leaveok(stdscr, TRUE);
  72         move(MESGY, MESGX);
  73         clrtoeol();
  74
  75         Guessed[ch - 'a'] = TRUE;
  76         correct = FALSE;
  77         for (i = 0; Word[i] != '\0'; i++)
  78                 if (Word[i] == ch) {
  79                         Known[i] = ch;
  80                         correct = TRUE;
  81                 }
  82         if (!correct)
  83                 Errors++;
  84 }
  85
  86 /*
  87  * readch;
  88  *      Read a character from the input
  89  */
  90 readch()
  91 {
  92         register int    cnt, r;
  93         auto char       ch;
  94
  95         cnt = 0;
  96         for (;;) {
  97                 if (read(0, &ch, sizeof ch) <= 0)
  98                 {
  99                         if (++cnt > 100)
 100                                 die();
 101                 }
 102                 else if (ch == CTRL('L')) {
 103                         wrefresh(curscr);
 104                         mvcur(0, 0, curscr->cury, curscr->curx);
 105                 } else
 106                         return ch;
 107         }
 108 }