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graphics.c revision 1.19 
      1 /*	$NetBSD: graphics.c,v 1.19 2015/06/19 06:02:31 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 1.19 2015/06/19 06:02:31 dholland Exp $");
     50 #endif
     51 #endif /* not lint */
     52 
     53 #include <stdio.h>
     54 #include <stdlib.h>
     55 #include <curses.h>
     56 #include <errno.h>
     57 #include <err.h>
     58 
     59 #include "def.h"
     60 #include "struct.h"
     61 #include "extern.h"
     62 #include "tunable.h"
     63 
     64 #define C_TOPBOTTOM		'-'
     65 #define C_LEFTRIGHT		'|'
     66 #define C_AIRPORT		'='
     67 #define C_LINE			'+'
     68 #define C_BACKROUND		'.'
     69 #define C_BEACON		'*'
     70 #define C_CREDIT		'*'
     71 
     72 static void draw_line(WINDOW *, int, int, int, int, const char *);
     73 
     74 static WINDOW *radar, *cleanradar, *credit, *input, *planes;
     75 
     76 int
     77 getAChar(void)
     78 {
     79 	int c;
     80 
     81 	errno = 0;
     82 	while ((c = getchar()) == EOF && errno == EINTR) {
     83 		errno = 0;
     84 		clearerr(stdin);
     85 	}
     86 	return(c);
     87 }
     88 
     89 void
     90 erase_all(void)
     91 {
     92 	PLANE	*pp;
     93 
     94 	for (pp = air.head; pp != NULL; pp = pp->next) {
     95 		(void)wmove(cleanradar, pp->ypos, pp->xpos * 2);
     96 		(void)wmove(radar, pp->ypos, pp->xpos * 2);
     97 		(void)waddch(radar, winch(cleanradar));
     98 		(void)wmove(cleanradar, pp->ypos, pp->xpos * 2 + 1);
     99 		(void)wmove(radar, pp->ypos, pp->xpos * 2 + 1);
    100 		(void)waddch(radar, winch(cleanradar));
    101 	}
    102 }
    103 
    104 void
    105 draw_all(void)
    106 {
    107 	PLANE	*pp;
    108 
    109 	for (pp = air.head; pp != NULL; pp = pp->next) {
    110 		if (pp->status == S_MARKED)
    111 			(void)wstandout(radar);
    112 		(void)wmove(radar, pp->ypos, pp->xpos * 2);
    113 		(void)waddch(radar, name(pp));
    114 		(void)waddch(radar, '0' + pp->altitude);
    115 		if (pp->status == S_MARKED)
    116 			(void)wstandend(radar);
    117 	}
    118 	(void)wrefresh(radar);
    119 	(void)planewin();
    120 	(void)wrefresh(input);		/* return cursor */
    121 	(void)fflush(stdout);
    122 }
    123 
    124 void
    125 init_gr(void)
    126 {
    127 	static char	buffer[BUFSIZ];
    128 
    129 	if (!initscr())
    130 		errx(0, "couldn't initialize screen");
    131 	setbuf(stdout, buffer);
    132 	input = newwin(INPUT_LINES, COLS - PLANE_COLS, LINES - INPUT_LINES, 0);
    133 	credit = newwin(INPUT_LINES, PLANE_COLS, LINES - INPUT_LINES,
    134 		COLS - PLANE_COLS);
    135 	planes = newwin(LINES - INPUT_LINES, PLANE_COLS, 0, COLS - PLANE_COLS);
    136 }
    137 
    138 void
    139 setup_screen(const C_SCREEN *scp)
    140 {
    141 	int	i, j;
    142 	unsigned iu;
    143 	char	str[3];
    144 	const char *airstr;
    145 
    146 	str[2] = '\0';
    147 
    148 	if (radar != NULL)
    149 		(void)delwin(radar);
    150 	radar = newwin(scp->height, scp->width * 2, 0, 0);
    151 
    152 	if (cleanradar != NULL)
    153 		(void)delwin(cleanradar);
    154 	cleanradar = newwin(scp->height, scp->width * 2, 0, 0);
    155 
    156 	/* minus one here to prevent a scroll */
    157 	for (i = 0; i < PLANE_COLS - 1; i++) {
    158 		(void)wmove(credit, 0, i);
    159 		(void)waddch(credit, C_CREDIT);
    160 		(void)wmove(credit, INPUT_LINES - 1, i);
    161 		(void)waddch(credit, C_CREDIT);
    162 	}
    163 	(void)wmove(credit, INPUT_LINES / 2, 1);
    164 	(void)waddstr(credit, AUTHOR_STR);
    165 
    166 	for (i = 1; i < scp->height - 1; i++) {
    167 		for (j = 1; j < scp->width - 1; j++) {
    168 			(void)wmove(radar, i, j * 2);
    169 			(void)waddch(radar, C_BACKROUND);
    170 		}
    171 	}
    172 
    173 	/*
    174 	 * Draw the lines first, since people like to draw lines
    175 	 * through beacons and exit points.
    176 	 */
    177 	str[0] = C_LINE;
    178 	for (iu = 0; iu < scp->num_lines; iu++) {
    179 		str[1] = ' ';
    180 		draw_line(radar, scp->line[iu].p1.x, scp->line[iu].p1.y,
    181 			scp->line[iu].p2.x, scp->line[iu].p2.y, str);
    182 	}
    183 
    184 	str[0] = C_TOPBOTTOM;
    185 	str[1] = C_TOPBOTTOM;
    186 	(void)wmove(radar, 0, 0);
    187 	for (i = 0; i < scp->width - 1; i++)
    188 		(void)waddstr(radar, str);
    189 	(void)waddch(radar, C_TOPBOTTOM);
    190 
    191 	str[0] = C_TOPBOTTOM;
    192 	str[1] = C_TOPBOTTOM;
    193 	(void)wmove(radar, scp->height - 1, 0);
    194 	for (i = 0; i < scp->width - 1; i++)
    195 		(void)waddstr(radar, str);
    196 	(void)waddch(radar, C_TOPBOTTOM);
    197 
    198 	for (i = 1; i < scp->height - 1; i++) {
    199 		(void)wmove(radar, i, 0);
    200 		(void)waddch(radar, C_LEFTRIGHT);
    201 		(void)wmove(radar, i, (scp->width - 1) * 2);
    202 		(void)waddch(radar, C_LEFTRIGHT);
    203 	}
    204 
    205 	str[0] = C_BEACON;
    206 	for (iu = 0; iu < scp->num_beacons; iu++) {
    207 		str[1] = '0' + iu;
    208 		(void)wmove(radar, scp->beacon[iu].y, scp->beacon[iu].x * 2);
    209 		(void)waddstr(radar, str);
    210 	}
    211 
    212 	for (iu = 0; iu < scp->num_exits; iu++) {
    213 		(void)wmove(radar, scp->exit[iu].y, scp->exit[iu].x * 2);
    214 		(void)waddch(radar, '0' + iu);
    215 	}
    216 
    217 	airstr = "^?>?v?<?";
    218 	for (iu = 0; iu < scp->num_airports; iu++) {
    219 		str[0] = airstr[scp->airport[iu].dir];
    220 		str[1] = '0' + iu;
    221 		(void)wmove(radar, scp->airport[iu].y, scp->airport[iu].x * 2);
    222 		(void)waddstr(radar, str);
    223 	}
    224 
    225 	(void)overwrite(radar, cleanradar);
    226 	(void)wrefresh(radar);
    227 	(void)wrefresh(credit);
    228 	(void)fflush(stdout);
    229 }
    230 
    231 static void
    232 draw_line(WINDOW *w, int x, int y, int lx, int ly, const char *s)
    233 {
    234 	int	dx, dy;
    235 
    236 	dx = SGN(lx - x);
    237 	dy = SGN(ly - y);
    238 	for (;;) {
    239 		(void)wmove(w, y, x * 2);
    240 		(void)waddstr(w, s);
    241 		if (x == lx && y == ly)
    242 			break;
    243 		x += dx;
    244 		y += dy;
    245 	}
    246 }
    247 
    248 void
    249 ioclrtoeol(int pos)
    250 {
    251 	(void)wmove(input, 0, pos);
    252 	(void)wclrtoeol(input);
    253 	(void)wrefresh(input);
    254 	(void)fflush(stdout);
    255 }
    256 
    257 void
    258 iomove(int pos)
    259 {
    260 	(void)wmove(input, 0, pos);
    261 	(void)wrefresh(input);
    262 	(void)fflush(stdout);
    263 }
    264 
    265 void
    266 ioaddstr(int pos, const char *str)
    267 {
    268 	(void)wmove(input, 0, pos);
    269 	(void)waddstr(input, str);
    270 	(void)wrefresh(input);
    271 	(void)fflush(stdout);
    272 }
    273 
    274 void
    275 ioclrtobot(void)
    276 {
    277 	(void)wclrtobot(input);
    278 	(void)wrefresh(input);
    279 	(void)fflush(stdout);
    280 }
    281 
    282 void
    283 ioerror(int pos, int len, const char *str)
    284 {
    285 	int	i;
    286 
    287 	(void)wmove(input, 1, pos);
    288 	for (i = 0; i < len; i++)
    289 		(void)waddch(input, '^');
    290 	(void)wmove(input, 2, 0);
    291 	(void)waddstr(input, str);
    292 	(void)wrefresh(input);
    293 	(void)fflush(stdout);
    294 }
    295 
    296 /* ARGSUSED */
    297 void
    298 quit(int dummy __unused)
    299 {
    300 	int			c, y, x;
    301 #ifdef BSD
    302 	struct itimerval	itv;
    303 #endif
    304 
    305 	getyx(input, y, x);
    306 	(void)wmove(input, 2, 0);
    307 	(void)waddstr(input, "Really quit? (y/n) ");
    308 	(void)wclrtobot(input);
    309 	(void)wrefresh(input);
    310 	(void)fflush(stdout);
    311 
    312 	c = getchar();
    313 	if (c == EOF || c == 'y') {
    314 		/* disable timer */
    315 #ifdef BSD
    316 		itv.it_value.tv_sec = 0;
    317 		itv.it_value.tv_usec = 0;
    318 		(void)setitimer(ITIMER_REAL, &itv, NULL);
    319 #endif
    320 #ifdef SYSV
    321 		alarm(0);
    322 #endif
    323 		(void)fflush(stdout);
    324 		(void)clear();
    325 		(void)refresh();
    326 		(void)endwin();
    327 		(void)log_score(0);
    328 		exit(0);
    329 	}
    330 	(void)wmove(input, 2, 0);
    331 	(void)wclrtobot(input);
    332 	(void)wmove(input, y, x);
    333 	(void)wrefresh(input);
    334 	(void)fflush(stdout);
    335 }
    336 
    337 void
    338 planewin(void)
    339 {
    340 	PLANE	*pp;
    341 	int	warning = 0;
    342 
    343 #ifdef BSD
    344 	(void)wclear(planes);
    345 #endif
    346 
    347 	(void)wmove(planes, 0,0);
    348 
    349 #ifdef SYSV
    350 	wclrtobot(planes);
    351 #endif
    352 	(void)wprintw(planes, "Time: %-4d Safe: %d", clck, safe_planes);
    353 	(void)wmove(planes, 2, 0);
    354 
    355 	(void)waddstr(planes, "pl dt  comm");
    356 	for (pp = air.head; pp != NULL; pp = pp->next) {
    357 		if (waddch(planes, '\n') == ERR) {
    358 			warning++;
    359 			break;
    360 		}
    361 		(void)waddstr(planes, command(pp));
    362 	}
    363 	(void)waddch(planes, '\n');
    364 	for (pp = ground.head; pp != NULL; pp = pp->next) {
    365 		if (waddch(planes, '\n') == ERR) {
    366 			warning++;
    367 			break;
    368 		}
    369 		(void)waddstr(planes, command(pp));
    370 	}
    371 	if (warning) {
    372 		(void)wmove(planes, LINES - INPUT_LINES - 1, 0);
    373 		(void)waddstr(planes, "---- more ----");
    374 		(void)wclrtoeol(planes);
    375 	}
    376 	(void)wrefresh(planes);
    377 	(void)fflush(stdout);
    378 }
    379 
    380 void
    381 loser(const PLANE *p, const char *s)
    382 {
    383 	int			c;
    384 #ifdef BSD
    385 	struct itimerval	itv;
    386 #endif
    387 
    388 	/* disable timer */
    389 #ifdef BSD
    390 	itv.it_value.tv_sec = 0;
    391 	itv.it_value.tv_usec = 0;
    392 	(void)setitimer(ITIMER_REAL, &itv, NULL);
    393 #endif
    394 #ifdef SYSV
    395 	alarm(0);
    396 #endif
    397 
    398 	(void)wmove(input, 0, 0);
    399 	(void)wclrtobot(input);
    400 	/* p may be NULL if we ran out of memory */
    401 	if (p == NULL)
    402 		(void)wprintw(input, "%s\n\nHit space for top players list...",
    403 		    s);
    404 	else {
    405 		(void)wprintw(input, "Plane '%c' %s\n\n", name(p), s);
    406 		(void)wprintw(input, "Hit space for top players list...");
    407 	}
    408 	(void)wrefresh(input);
    409 	(void)fflush(stdout);
    410 	while ((c = getchar()) != EOF && c != ' ')
    411 		;
    412 	(void)clear();	/* move to top of screen */
    413 	(void)refresh();
    414 	(void)endwin();
    415 	(void)log_score(0);
    416 	exit(0);
    417 }
    418 
    419 void
    420 redraw(void)
    421 {
    422 	(void)clear();
    423 	(void)refresh();
    424 
    425 	(void)touchwin(radar);
    426 	(void)wrefresh(radar);
    427 	(void)touchwin(planes);
    428 	(void)wrefresh(planes);
    429 	(void)touchwin(credit);
    430 	(void)wrefresh(credit);
    431 
    432 	/* refresh input last to get cursor in right place */
    433 	(void)touchwin(input);
    434 	(void)wrefresh(input);
    435 	(void)fflush(stdout);
    436 }
    437 
    438 void
    439 done_screen(void)
    440 {
    441 	(void)clear();
    442 	(void)refresh();
    443 	(void)endwin();	  /* clean up curses */
    444 }
    445