Home | History | Annotate | Line # | Download | only in hangman
getguess.c revision 1.4 
      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 }
    109