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graphics.c revision 1.17 
      1 /*	$NetBSD: graphics.c,v 1.17 2014/03/22 22:24:21 dholland Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Ed James.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 /*
     36  * Copyright (c) 1987 by Ed James, UC Berkeley.  All rights reserved.
     37  *
     38  * Copy permission is hereby granted provided that this notice is
     39  * retained on all partial or complete copies.
     40  *
     41  * For more info on this and all of my stuff, mail edjames (at) berkeley.edu.
     42  */
     43 
     44 #include <sys/cdefs.h>
     45 #ifndef lint
     46 #if 0
     47 static char sccsid[] = "@(#)graphics.c	8.1 (Berkeley) 5/31/93";
     48 #else
     49 __RCSID("$NetBSD: graphics.c,v 1.17 2014/03/22 22:24:21 dholland Exp $");
     50 #endif
     51 #endif /* not lint */
     52 
     53 #include "include.h"
     54 
     55 #define C_TOPBOTTOM		'-'
     56 #define C_LEFTRIGHT		'|'
     57 #define C_AIRPORT		'='
     58 #define C_LINE			'+'
     59 #define C_BACKROUND		'.'
     60 #define C_BEACON		'*'
     61 #define C_CREDIT		'*'
     62 
     63 static void draw_line(WINDOW *, int, int, int, int, const char *);
     64 
     65 static WINDOW *radar, *cleanradar, *credit, *input, *planes;
     66 
     67 int
     68 getAChar(void)
     69 {
     70 	int c;
     71 
     72 	errno = 0;
     73 	while ((c = getchar()) == EOF && errno == EINTR) {
     74 		errno = 0;
     75 		clearerr(stdin);
     76 	}
     77 	return(c);
     78 }
     79 
     80 void
     81 erase_all(void)
     82 {
     83 	PLANE	*pp;
     84 
     85 	for (pp = air.head; pp != NULL; pp = pp->next) {
     86 		(void)wmove(cleanradar, pp->ypos, pp->xpos * 2);
     87 		(void)wmove(radar, pp->ypos, pp->xpos * 2);
     88 		(void)waddch(radar, winch(cleanradar));
     89 		(void)wmove(cleanradar, pp->ypos, pp->xpos * 2 + 1);
     90 		(void)wmove(radar, pp->ypos, pp->xpos * 2 + 1);
     91 		(void)waddch(radar, winch(cleanradar));
     92 	}
     93 }
     94 
     95 void
     96 draw_all(void)
     97 {
     98 	PLANE	*pp;
     99 
    100 	for (pp = air.head; pp != NULL; pp = pp->next) {
    101 		if (pp->status == S_MARKED)
    102 			(void)wstandout(radar);
    103 		(void)wmove(radar, pp->ypos, pp->xpos * 2);
    104 		(void)waddch(radar, name(pp));
    105 		(void)waddch(radar, '0' + pp->altitude);
    106 		if (pp->status == S_MARKED)
    107 			(void)wstandend(radar);
    108 	}
    109 	(void)wrefresh(radar);
    110 	(void)planewin();
    111 	(void)wrefresh(input);		/* return cursor */
    112 	(void)fflush(stdout);
    113 }
    114 
    115 void
    116 init_gr(void)
    117 {
    118 	static char	buffer[BUFSIZ];
    119 
    120 	if (!initscr())
    121 		errx(0, "couldn't initialize screen");
    122 	setbuf(stdout, buffer);
    123 	input = newwin(INPUT_LINES, COLS - PLANE_COLS, LINES - INPUT_LINES, 0);
    124 	credit = newwin(INPUT_LINES, PLANE_COLS, LINES - INPUT_LINES,
    125 		COLS - PLANE_COLS);
    126 	planes = newwin(LINES - INPUT_LINES, PLANE_COLS, 0, COLS - PLANE_COLS);
    127 }
    128 
    129 void
    130 setup_screen(const C_SCREEN *scp)
    131 {
    132 	int	i, j;
    133 	unsigned iu;
    134 	char	str[3];
    135 	const char *airstr;
    136 
    137 	str[2] = '\0';
    138 
    139 	if (radar != NULL)
    140 		(void)delwin(radar);
    141 	radar = newwin(scp->height, scp->width * 2, 0, 0);
    142 
    143 	if (cleanradar != NULL)
    144 		(void)delwin(cleanradar);
    145 	cleanradar = newwin(scp->height, scp->width * 2, 0, 0);
    146 
    147 	/* minus one here to prevent a scroll */
    148 	for (i = 0; i < PLANE_COLS - 1; i++) {
    149 		(void)wmove(credit, 0, i);
    150 		(void)waddch(credit, C_CREDIT);
    151 		(void)wmove(credit, INPUT_LINES - 1, i);
    152 		(void)waddch(credit, C_CREDIT);
    153 	}
    154 	(void)wmove(credit, INPUT_LINES / 2, 1);
    155 	(void)waddstr(credit, AUTHOR_STR);
    156 
    157 	for (i = 1; i < scp->height - 1; i++) {
    158 		for (j = 1; j < scp->width - 1; j++) {
    159 			(void)wmove(radar, i, j * 2);
    160 			(void)waddch(radar, C_BACKROUND);
    161 		}
    162 	}
    163 
    164 	/*
    165 	 * Draw the lines first, since people like to draw lines
    166 	 * through beacons and exit points.
    167 	 */
    168 	str[0] = C_LINE;
    169 	for (i = 0; i < scp->num_lines; i++) {
    170 		str[1] = ' ';
    171 		draw_line(radar, scp->line[i].p1.x, scp->line[i].p1.y,
    172 			scp->line[i].p2.x, scp->line[i].p2.y, str);
    173 	}
    174 
    175 	str[0] = C_TOPBOTTOM;
    176 	str[1] = C_TOPBOTTOM;
    177 	(void)wmove(radar, 0, 0);
    178 	for (i = 0; i < scp->width - 1; i++)
    179 		(void)waddstr(radar, str);
    180 	(void)waddch(radar, C_TOPBOTTOM);
    181 
    182 	str[0] = C_TOPBOTTOM;
    183 	str[1] = C_TOPBOTTOM;
    184 	(void)wmove(radar, scp->height - 1, 0);
    185 	for (i = 0; i < scp->width - 1; i++)
    186 		(void)waddstr(radar, str);
    187 	(void)waddch(radar, C_TOPBOTTOM);
    188 
    189 	for (i = 1; i < scp->height - 1; i++) {
    190 		(void)wmove(radar, i, 0);
    191 		(void)waddch(radar, C_LEFTRIGHT);
    192 		(void)wmove(radar, i, (scp->width - 1) * 2);
    193 		(void)waddch(radar, C_LEFTRIGHT);
    194 	}
    195 
    196 	str[0] = C_BEACON;
    197 	for (iu = 0; iu < scp->num_beacons; iu++) {
    198 		str[1] = '0' + iu;
    199 		(void)wmove(radar, scp->beacon[iu].y, scp->beacon[iu].x * 2);
    200 		(void)waddstr(radar, str);
    201 	}
    202 
    203 	for (iu = 0; iu < scp->num_exits; iu++) {
    204 		(void)wmove(radar, scp->exit[iu].y, scp->exit[iu].x * 2);
    205 		(void)waddch(radar, '0' + iu);
    206 	}
    207 
    208 	airstr = "^?>?v?<?";
    209 	for (iu = 0; iu < scp->num_airports; iu++) {
    210 		str[0] = airstr[scp->airport[iu].dir];
    211 		str[1] = '0' + iu;
    212 		(void)wmove(radar, scp->airport[iu].y, scp->airport[iu].x * 2);
    213 		(void)waddstr(radar, str);
    214 	}
    215 
    216 	(void)overwrite(radar, cleanradar);
    217 	(void)wrefresh(radar);
    218 	(void)wrefresh(credit);
    219 	(void)fflush(stdout);
    220 }
    221 
    222 static void
    223 draw_line(WINDOW *w, int x, int y, int lx, int ly, const char *s)
    224 {
    225 	int	dx, dy;
    226 
    227 	dx = SGN(lx - x);
    228 	dy = SGN(ly - y);
    229 	for (;;) {
    230 		(void)wmove(w, y, x * 2);
    231 		(void)waddstr(w, s);
    232 		if (x == lx && y == ly)
    233 			break;
    234 		x += dx;
    235 		y += dy;
    236 	}
    237 }
    238 
    239 void
    240 ioclrtoeol(int pos)
    241 {
    242 	(void)wmove(input, 0, pos);
    243 	(void)wclrtoeol(input);
    244 	(void)wrefresh(input);
    245 	(void)fflush(stdout);
    246 }
    247 
    248 void
    249 iomove(int pos)
    250 {
    251 	(void)wmove(input, 0, pos);
    252 	(void)wrefresh(input);
    253 	(void)fflush(stdout);
    254 }
    255 
    256 void
    257 ioaddstr(int pos, const char *str)
    258 {
    259 	(void)wmove(input, 0, pos);
    260 	(void)waddstr(input, str);
    261 	(void)wrefresh(input);
    262 	(void)fflush(stdout);
    263 }
    264 
    265 void
    266 ioclrtobot(void)
    267 {
    268 	(void)wclrtobot(input);
    269 	(void)wrefresh(input);
    270 	(void)fflush(stdout);
    271 }
    272 
    273 void
    274 ioerror(int pos, int len, const char *str)
    275 {
    276 	int	i;
    277 
    278 	(void)wmove(input, 1, pos);
    279 	for (i = 0; i < len; i++)
    280 		(void)waddch(input, '^');
    281 	(void)wmove(input, 2, 0);
    282 	(void)waddstr(input, str);
    283 	(void)wrefresh(input);
    284 	(void)fflush(stdout);
    285 }
    286 
    287 /* ARGSUSED */
    288 void
    289 quit(int dummy __unused)
    290 {
    291 	int			c, y, x;
    292 #ifdef BSD
    293 	struct itimerval	itv;
    294 #endif
    295 
    296 	getyx(input, y, x);
    297 	(void)wmove(input, 2, 0);
    298 	(void)waddstr(input, "Really quit? (y/n) ");
    299 	(void)wclrtobot(input);
    300 	(void)wrefresh(input);
    301 	(void)fflush(stdout);
    302 
    303 	c = getchar();
    304 	if (c == EOF || c == 'y') {
    305 		/* disable timer */
    306 #ifdef BSD
    307 		itv.it_value.tv_sec = 0;
    308 		itv.it_value.tv_usec = 0;
    309 		(void)setitimer(ITIMER_REAL, &itv, NULL);
    310 #endif
    311 #ifdef SYSV
    312 		alarm(0);
    313 #endif
    314 		(void)fflush(stdout);
    315 		(void)clear();
    316 		(void)refresh();
    317 		(void)endwin();
    318 		(void)log_score(0);
    319 		exit(0);
    320 	}
    321 	(void)wmove(input, 2, 0);
    322 	(void)wclrtobot(input);
    323 	(void)wmove(input, y, x);
    324 	(void)wrefresh(input);
    325 	(void)fflush(stdout);
    326 }
    327 
    328 void
    329 planewin(void)
    330 {
    331 	PLANE	*pp;
    332 	int	warning = 0;
    333 
    334 #ifdef BSD
    335 	(void)wclear(planes);
    336 #endif
    337 
    338 	(void)wmove(planes, 0,0);
    339 
    340 #ifdef SYSV
    341 	wclrtobot(planes);
    342 #endif
    343 	(void)wprintw(planes, "Time: %-4d Safe: %d", clck, safe_planes);
    344 	(void)wmove(planes, 2, 0);
    345 
    346 	(void)waddstr(planes, "pl dt  comm");
    347 	for (pp = air.head; pp != NULL; pp = pp->next) {
    348 		if (waddch(planes, '\n') == ERR) {
    349 			warning++;
    350 			break;
    351 		}
    352 		(void)waddstr(planes, command(pp));
    353 	}
    354 	(void)waddch(planes, '\n');
    355 	for (pp = ground.head; pp != NULL; pp = pp->next) {
    356 		if (waddch(planes, '\n') == ERR) {
    357 			warning++;
    358 			break;
    359 		}
    360 		(void)waddstr(planes, command(pp));
    361 	}
    362 	if (warning) {
    363 		(void)wmove(planes, LINES - INPUT_LINES - 1, 0);
    364 		(void)waddstr(planes, "---- more ----");
    365 		(void)wclrtoeol(planes);
    366 	}
    367 	(void)wrefresh(planes);
    368 	(void)fflush(stdout);
    369 }
    370 
    371 void
    372 loser(const PLANE *p, const char *s)
    373 {
    374 	int			c;
    375 #ifdef BSD
    376 	struct itimerval	itv;
    377 #endif
    378 
    379 	/* disable timer */
    380 #ifdef BSD
    381 	itv.it_value.tv_sec = 0;
    382 	itv.it_value.tv_usec = 0;
    383 	(void)setitimer(ITIMER_REAL, &itv, NULL);
    384 #endif
    385 #ifdef SYSV
    386 	alarm(0);
    387 #endif
    388 
    389 	(void)wmove(input, 0, 0);
    390 	(void)wclrtobot(input);
    391 	/* p may be NULL if we ran out of memory */
    392 	if (p == NULL)
    393 		(void)wprintw(input, "%s\n\nHit space for top players list...",
    394 		    s);
    395 	else {
    396 		(void)wprintw(input, "Plane '%c' %s\n\n", name(p), s);
    397 		(void)wprintw(input, "Hit space for top players list...");
    398 	}
    399 	(void)wrefresh(input);
    400 	(void)fflush(stdout);
    401 	while ((c = getchar()) != EOF && c != ' ')
    402 		;
    403 	(void)clear();	/* move to top of screen */
    404 	(void)refresh();
    405 	(void)endwin();
    406 	(void)log_score(0);
    407 	exit(0);
    408 }
    409 
    410 void
    411 redraw(void)
    412 {
    413 	(void)clear();
    414 	(void)refresh();
    415 
    416 	(void)touchwin(radar);
    417 	(void)wrefresh(radar);
    418 	(void)touchwin(planes);
    419 	(void)wrefresh(planes);
    420 	(void)touchwin(credit);
    421 	(void)wrefresh(credit);
    422 
    423 	/* refresh input last to get cursor in right place */
    424 	(void)touchwin(input);
    425 	(void)wrefresh(input);
    426 	(void)fflush(stdout);
    427 }
    428 
    429 void
    430 done_screen(void)
    431 {
    432 	(void)clear();
    433 	(void)refresh();
    434 	(void)endwin();	  /* clean up curses */
    435 }
    436