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graphics.c revision 1.11 
      1 /*	$NetBSD: graphics.c,v 1.11 2005/07/01 00:48:34 jmc 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 1.11 2005/07/01 00:48:34 jmc 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 WINDOW	*radar, *cleanradar, *credit, *input, *planes;
     64 
     65 int
     66 getAChar(void)
     67 {
     68 	int c;
     69 
     70 	errno = 0;
     71 	while ((c = getchar()) == EOF && errno == EINTR) {
     72 		errno = 0;
     73 		clearerr(stdin);
     74 	}
     75 	return(c);
     76 }
     77 
     78 void
     79 erase_all(void)
     80 {
     81 	PLANE	*pp;
     82 
     83 	for (pp = air.head; pp != NULL; pp = pp->next) {
     84 		wmove(cleanradar, pp->ypos, pp->xpos * 2);
     85 		wmove(radar, pp->ypos, pp->xpos * 2);
     86 		waddch(radar, winch(cleanradar));
     87 		wmove(cleanradar, pp->ypos, pp->xpos * 2 + 1);
     88 		wmove(radar, pp->ypos, pp->xpos * 2 + 1);
     89 		waddch(radar, winch(cleanradar));
     90 	}
     91 }
     92 
     93 void
     94 draw_all(void)
     95 {
     96 	PLANE	*pp;
     97 
     98 	for (pp = air.head; pp != NULL; pp = pp->next) {
     99 		if (pp->status == S_MARKED)
    100 			wstandout(radar);
    101 		wmove(radar, pp->ypos, pp->xpos * 2);
    102 		waddch(radar, name(pp));
    103 		waddch(radar, '0' + pp->altitude);
    104 		if (pp->status == S_MARKED)
    105 			wstandend(radar);
    106 	}
    107 	wrefresh(radar);
    108 	planewin();
    109 	wrefresh(input);		/* return cursor */
    110 	fflush(stdout);
    111 }
    112 
    113 void
    114 init_gr(void)
    115 {
    116 	static char	buffer[BUFSIZ];
    117 
    118 	initscr();
    119 	setbuf(stdout, buffer);
    120 	input = newwin(INPUT_LINES, COLS - PLANE_COLS, LINES - INPUT_LINES, 0);
    121 	credit = newwin(INPUT_LINES, PLANE_COLS, LINES - INPUT_LINES,
    122 		COLS - PLANE_COLS);
    123 	planes = newwin(LINES - INPUT_LINES, PLANE_COLS, 0, COLS - PLANE_COLS);
    124 }
    125 
    126 void
    127 setup_screen(const C_SCREEN *scp)
    128 {
    129 	int	i, j;
    130 	char	str[3];
    131 	const char *airstr;
    132 
    133 	str[2] = '\0';
    134 
    135 	if (radar != NULL)
    136 		delwin(radar);
    137 	radar = newwin(scp->height, scp->width * 2, 0, 0);
    138 
    139 	if (cleanradar != NULL)
    140 		delwin(cleanradar);
    141 	cleanradar = newwin(scp->height, scp->width * 2, 0, 0);
    142 
    143 	/* minus one here to prevent a scroll */
    144 	for (i = 0; i < PLANE_COLS - 1; i++) {
    145 		wmove(credit, 0, i);
    146 		waddch(credit, C_CREDIT);
    147 		wmove(credit, INPUT_LINES - 1, i);
    148 		waddch(credit, C_CREDIT);
    149 	}
    150 	wmove(credit, INPUT_LINES / 2, 1);
    151 	waddstr(credit, AUTHOR_STR);
    152 
    153 	for (i = 1; i < scp->height - 1; i++) {
    154 		for (j = 1; j < scp->width - 1; j++) {
    155 			wmove(radar, i, j * 2);
    156 			waddch(radar, C_BACKROUND);
    157 		}
    158 	}
    159 
    160 	/*
    161 	 * Draw the lines first, since people like to draw lines
    162 	 * through beacons and exit points.
    163 	 */
    164 	str[0] = C_LINE;
    165 	for (i = 0; i < scp->num_lines; i++) {
    166 		str[1] = ' ';
    167 		draw_line(radar, scp->line[i].p1.x, scp->line[i].p1.y,
    168 			scp->line[i].p2.x, scp->line[i].p2.y, str);
    169 	}
    170 
    171 	str[0] = C_TOPBOTTOM;
    172 	str[1] = C_TOPBOTTOM;
    173 	wmove(radar, 0, 0);
    174 	for (i = 0; i < scp->width - 1; i++)
    175 		waddstr(radar, str);
    176 	waddch(radar, C_TOPBOTTOM);
    177 
    178 	str[0] = C_TOPBOTTOM;
    179 	str[1] = C_TOPBOTTOM;
    180 	wmove(radar, scp->height - 1, 0);
    181 	for (i = 0; i < scp->width - 1; i++)
    182 		waddstr(radar, str);
    183 	waddch(radar, C_TOPBOTTOM);
    184 
    185 	for (i = 1; i < scp->height - 1; i++) {
    186 		wmove(radar, i, 0);
    187 		waddch(radar, C_LEFTRIGHT);
    188 		wmove(radar, i, (scp->width - 1) * 2);
    189 		waddch(radar, C_LEFTRIGHT);
    190 	}
    191 
    192 	str[0] = C_BEACON;
    193 	for (i = 0; i < scp->num_beacons; i++) {
    194 		str[1] = '0' + i;
    195 		wmove(radar, scp->beacon[i].y, scp->beacon[i].x * 2);
    196 		waddstr(radar, str);
    197 	}
    198 
    199 	for (i = 0; i < scp->num_exits; i++) {
    200 		wmove(radar, scp->exit[i].y, scp->exit[i].x * 2);
    201 		waddch(radar, '0' + i);
    202 	}
    203 
    204 	airstr = "^?>?v?<?";
    205 	for (i = 0; i < scp->num_airports; i++) {
    206 		str[0] = airstr[scp->airport[i].dir];
    207 		str[1] = '0' + i;
    208 		wmove(radar, scp->airport[i].y, scp->airport[i].x * 2);
    209 		waddstr(radar, str);
    210 	}
    211 
    212 	overwrite(radar, cleanradar);
    213 	wrefresh(radar);
    214 	wrefresh(credit);
    215 	fflush(stdout);
    216 }
    217 
    218 void
    219 draw_line(WINDOW *w, int x, int y, int lx, int ly, const char *s)
    220 {
    221 	int	dx, dy;
    222 
    223 	dx = SGN(lx - x);
    224 	dy = SGN(ly - y);
    225 	for (;;) {
    226 		wmove(w, y, x * 2);
    227 		waddstr(w, s);
    228 		if (x == lx && y == ly)
    229 			break;
    230 		x += dx;
    231 		y += dy;
    232 	}
    233 }
    234 
    235 void
    236 ioclrtoeol(int pos)
    237 {
    238 	wmove(input, 0, pos);
    239 	wclrtoeol(input);
    240 	wrefresh(input);
    241 	fflush(stdout);
    242 }
    243 
    244 void
    245 iomove(int pos)
    246 {
    247 	wmove(input, 0, pos);
    248 	wrefresh(input);
    249 	fflush(stdout);
    250 }
    251 
    252 void
    253 ioaddstr(int pos, const char *str)
    254 {
    255 	wmove(input, 0, pos);
    256 	waddstr(input, str);
    257 	wrefresh(input);
    258 	fflush(stdout);
    259 }
    260 
    261 void
    262 ioclrtobot(void)
    263 {
    264 	wclrtobot(input);
    265 	wrefresh(input);
    266 	fflush(stdout);
    267 }
    268 
    269 void
    270 ioerror(int pos, int len, const char *str)
    271 {
    272 	int	i;
    273 
    274 	wmove(input, 1, pos);
    275 	for (i = 0; i < len; i++)
    276 		waddch(input, '^');
    277 	wmove(input, 2, 0);
    278 	waddstr(input, str);
    279 	wrefresh(input);
    280 	fflush(stdout);
    281 }
    282 
    283 void
    284 quit(int dummy __attribute__((__unused__)))
    285 {
    286 	int			c, y, x;
    287 #ifdef BSD
    288 	struct itimerval	itv;
    289 #endif
    290 
    291 	getyx(input, y, x);
    292 	wmove(input, 2, 0);
    293 	waddstr(input, "Really quit? (y/n) ");
    294 	wclrtobot(input);
    295 	wrefresh(input);
    296 	fflush(stdout);
    297 
    298 	c = getchar();
    299 	if (c == EOF || c == 'y') {
    300 		/* disable timer */
    301 #ifdef BSD
    302 		itv.it_value.tv_sec = 0;
    303 		itv.it_value.tv_usec = 0;
    304 		setitimer(ITIMER_REAL, &itv, NULL);
    305 #endif
    306 #ifdef SYSV
    307 		alarm(0);
    308 #endif
    309 		fflush(stdout);
    310 		clear();
    311 		refresh();
    312 		endwin();
    313 		log_score(0);
    314 		exit(0);
    315 	}
    316 	wmove(input, 2, 0);
    317 	wclrtobot(input);
    318 	wmove(input, y, x);
    319 	wrefresh(input);
    320 	fflush(stdout);
    321 }
    322 
    323 void
    324 planewin(void)
    325 {
    326 	PLANE	*pp;
    327 	int	warning = 0;
    328 
    329 #ifdef BSD
    330 	wclear(planes);
    331 #endif
    332 
    333 	wmove(planes, 0,0);
    334 
    335 #ifdef SYSV
    336 	wclrtobot(planes);
    337 #endif
    338 	wprintw(planes, "Time: %-4d Safe: %d", clck, safe_planes);
    339 	wmove(planes, 2, 0);
    340 
    341 	waddstr(planes, "pl dt  comm");
    342 	for (pp = air.head; pp != NULL; pp = pp->next) {
    343 		if (waddch(planes, '\n') == ERR) {
    344 			warning++;
    345 			break;
    346 		}
    347 		waddstr(planes, command(pp));
    348 	}
    349 	waddch(planes, '\n');
    350 	for (pp = ground.head; pp != NULL; pp = pp->next) {
    351 		if (waddch(planes, '\n') == ERR) {
    352 			warning++;
    353 			break;
    354 		}
    355 		waddstr(planes, command(pp));
    356 	}
    357 	if (warning) {
    358 		wmove(planes, LINES - INPUT_LINES - 1, 0);
    359 		waddstr(planes, "---- more ----");
    360 		wclrtoeol(planes);
    361 	}
    362 	wrefresh(planes);
    363 	fflush(stdout);
    364 }
    365 
    366 void
    367 loser(const PLANE *p, const char *s)
    368 {
    369 	int			c;
    370 #ifdef BSD
    371 	struct itimerval	itv;
    372 #endif
    373 
    374 	/* disable timer */
    375 #ifdef BSD
    376 	itv.it_value.tv_sec = 0;
    377 	itv.it_value.tv_usec = 0;
    378 	setitimer(ITIMER_REAL, &itv, NULL);
    379 #endif
    380 #ifdef SYSV
    381 	alarm(0);
    382 #endif
    383 
    384 	wmove(input, 0, 0);
    385 	wclrtobot(input);
    386 	/* p may be NULL if we ran out of memory */
    387 	if (p == NULL)
    388 		wprintw(input, "%s\n\nHit space for top players list...", s);
    389 	else
    390 		wprintw(input, "Plane '%c' %s\n\n", name(p), s);
    391 		wprintw(input, "Hit space for top players list...");
    392 	wrefresh(input);
    393 	fflush(stdout);
    394 	while ((c = getchar()) != EOF && c != ' ')
    395 		;
    396 	clear();	/* move to top of screen */
    397 	refresh();
    398 	endwin();
    399 	log_score(0);
    400 	exit(0);
    401 }
    402 
    403 void
    404 redraw(void)
    405 {
    406 	clear();
    407 	refresh();
    408 
    409 	touchwin(radar);
    410 	wrefresh(radar);
    411 	touchwin(planes);
    412 	wrefresh(planes);
    413 	touchwin(credit);
    414 	wrefresh(credit);
    415 
    416 	/* refresh input last to get cursor in right place */
    417 	touchwin(input);
    418 	wrefresh(input);
    419 	fflush(stdout);
    420 }
    421 
    422 void
    423 done_screen(void)
    424 {
    425 	clear();
    426 	refresh();
    427 	endwin();	  /* clean up curses */
    428 }
    429