1 /* $NetBSD: rain.c,v 1.14 2003/08/07 09:37:35 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)rain.c 8.1 (Berkeley) 5/31/93"; 41 #else 42 __RCSID("$NetBSD: rain.c,v 1.14 2003/08/07 09:37:35 agc Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 /* 47 * rain 11/3/1980 EPS/CITHEP 48 * cc rain.c -o rain -O -ltermlib 49 */ 50 51 #include <sys/types.h> 52 #include <curses.h> 53 #include <err.h> 54 #include <signal.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <unistd.h> 58 59 volatile sig_atomic_t sig_caught = 0; 60 61 int main __P((int, char **)); 62 void onsig __P((int)); 63 64 65 int 66 main(argc, argv) 67 int argc; 68 char **argv; 69 { 70 int x, y, j; 71 long cols, lines; 72 unsigned int delay = 0; 73 int ch; 74 int xpos[5], ypos[5]; 75 76 while ((ch = getopt(argc, argv, "d:h")) != -1) 77 switch (ch) { 78 case 'd': 79 if ((delay = (unsigned int)strtoul(optarg, (char **)NULL, 10)) < 1 80 || delay > 1000) 81 errx(1, "invalid delay (1-1000)"); 82 delay *= 1000; /* ms -> us */ 83 break; 84 case 'h': 85 default: 86 (void)fprintf(stderr, "usage: rain [-d delay]\n"); 87 exit(1); 88 } 89 90 initscr(); 91 cols = COLS - 4; 92 lines = LINES - 4; 93 94 (void)signal(SIGHUP, onsig); 95 (void)signal(SIGINT, onsig); 96 (void)signal(SIGQUIT, onsig); 97 (void)signal(SIGSTOP, onsig); 98 (void)signal(SIGTSTP, onsig); 99 (void)signal(SIGTERM, onsig); 100 101 for (j = 4; j >= 0; --j) { 102 xpos[j] = random() % cols + 2; 103 ypos[j] = random() % lines + 2; 104 } 105 for (j = 0;;) { 106 if (sig_caught) { 107 endwin(); 108 exit(0); 109 } 110 x = random() % cols + 2; 111 y = random() % lines + 2; 112 mvaddch(y, x, '.'); 113 mvaddch(ypos[j], xpos[j], 'o'); 114 if (!j--) 115 j = 4; 116 mvaddch(ypos[j], xpos[j], 'O'); 117 if (!j--) 118 j = 4; 119 mvaddch(ypos[j] - 1, xpos[j], '-'); 120 mvaddstr(ypos[j], xpos[j] - 1, "|.|"); 121 mvaddch(ypos[j] + 1, xpos[j], '-'); 122 if (!j--) 123 j = 4; 124 mvaddch(ypos[j] - 2, xpos[j], '-'); 125 mvaddstr(ypos[j] - 1, xpos[j] - 1, "/ \\"); 126 mvaddstr(ypos[j], xpos[j] - 2, "| O |"); 127 mvaddstr(ypos[j] + 1, xpos[j] - 1, "\\ /"); 128 mvaddch(ypos[j] + 2, xpos[j], '-'); 129 if (!j--) 130 j = 4; 131 mvaddch(ypos[j] - 2, xpos[j], ' '); 132 mvaddstr(ypos[j] - 1, xpos[j] - 1, " "); 133 mvaddstr(ypos[j], xpos[j] - 2, " "); 134 mvaddstr(ypos[j] + 1, xpos[j] - 1, " "); 135 mvaddch(ypos[j] + 2, xpos[j], ' '); 136 xpos[j] = x; 137 ypos[j] = y; 138 refresh(); 139 if (delay) usleep(delay); 140 } 141 } 142 143 void 144 onsig(dummy) 145 int dummy __attribute__((__unused__)); 146 { 147 sig_caught = 1; 148 } 149