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getguess.c revision 1.2 
      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 }
    109