1 /* $NetBSD: rain.c,v 1.13 1999/08/08 02:06:01 simonb 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)rain.c 8.1 (Berkeley) 5/31/93"; 45 #else 46 __RCSID("$NetBSD: rain.c,v 1.13 1999/08/08 02:06:01 simonb Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 /* 51 * rain 11/3/1980 EPS/CITHEP 52 * cc rain.c -o rain -O -ltermlib 53 */ 54 55 #include <sys/types.h> 56 #include <curses.h> 57 #include <err.h> 58 #include <signal.h> 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <unistd.h> 62 63 volatile sig_atomic_t sig_caught = 0; 64 65 int main __P((int, char **)); 66 void onsig __P((int)); 67 68 69 int 70 main(argc, argv) 71 int argc; 72 char **argv; 73 { 74 int x, y, j; 75 long cols, lines; 76 unsigned int delay = 0; 77 int ch; 78 int xpos[5], ypos[5]; 79 80 while ((ch = getopt(argc, argv, "d:h")) != -1) 81 switch (ch) { 82 case 'd': 83 if ((delay = (unsigned int)strtoul(optarg, (char **)NULL, 10)) < 1 84 || delay > 1000) 85 errx(1, "invalid delay (1-1000)"); 86 delay *= 1000; /* ms -> us */ 87 break; 88 case 'h': 89 default: 90 (void)fprintf(stderr, "usage: rain [-d delay]\n"); 91 exit(1); 92 } 93 94 initscr(); 95 cols = COLS - 4; 96 lines = LINES - 4; 97 98 (void)signal(SIGHUP, onsig); 99 (void)signal(SIGINT, onsig); 100 (void)signal(SIGQUIT, onsig); 101 (void)signal(SIGSTOP, onsig); 102 (void)signal(SIGTSTP, onsig); 103 (void)signal(SIGTERM, onsig); 104 105 for (j = 4; j >= 0; --j) { 106 xpos[j] = random() % cols + 2; 107 ypos[j] = random() % lines + 2; 108 } 109 for (j = 0;;) { 110 if (sig_caught) { 111 endwin(); 112 exit(0); 113 } 114 x = random() % cols + 2; 115 y = random() % lines + 2; 116 mvaddch(y, x, '.'); 117 mvaddch(ypos[j], xpos[j], 'o'); 118 if (!j--) 119 j = 4; 120 mvaddch(ypos[j], xpos[j], 'O'); 121 if (!j--) 122 j = 4; 123 mvaddch(ypos[j] - 1, xpos[j], '-'); 124 mvaddstr(ypos[j], xpos[j] - 1, "|.|"); 125 mvaddch(ypos[j] + 1, xpos[j], '-'); 126 if (!j--) 127 j = 4; 128 mvaddch(ypos[j] - 2, xpos[j], '-'); 129 mvaddstr(ypos[j] - 1, xpos[j] - 1, "/ \\"); 130 mvaddstr(ypos[j], xpos[j] - 2, "| O |"); 131 mvaddstr(ypos[j] + 1, xpos[j] - 1, "\\ /"); 132 mvaddch(ypos[j] + 2, xpos[j], '-'); 133 if (!j--) 134 j = 4; 135 mvaddch(ypos[j] - 2, xpos[j], ' '); 136 mvaddstr(ypos[j] - 1, xpos[j] - 1, " "); 137 mvaddstr(ypos[j], xpos[j] - 2, " "); 138 mvaddstr(ypos[j] + 1, xpos[j] - 1, " "); 139 mvaddch(ypos[j] + 2, xpos[j], ' '); 140 xpos[j] = x; 141 ypos[j] = y; 142 refresh(); 143 if (delay) usleep(delay); 144 } 145 } 146 147 void 148 onsig(dummy) 149 int dummy __attribute__((__unused__)); 150 { 151 sig_caught = 1; 152 } 153