1 /* $OpenBSD: rain.c,v 1.9 2000/01/25 06:37:09 pjanzen 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 #ifndef lint 37 static char copyright[] = 38 "@(#) 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 static char rcsid[] = "$OpenBSD: rain.c,v 1.9 2000/01/25 06:37:09 pjanzen 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 static void onsig __P((int)); 66 67 68 int 69 main(argc, argv) 70 int argc; 71 char **argv; 72 { 73 int x, y, j; 74 long tcols, tlines; 75 u_int delay = 0; 76 int ch; 77 int xpos[5], ypos[5]; 78 79 /* revoke */ 80 setegid(getgid()); 81 setgid(getgid()); 82 83 while ((ch = getopt(argc, argv, "d:h")) != -1) 84 switch(ch) { 85 case 'd': 86 if ((delay = (u_int)strtoul(optarg,(char **)NULL,10)) < 1 87 || delay > 1000) 88 errx(1, "invalid delay (1-1000)"); 89 delay *= 1000; /* ms -> us */ 90 break; 91 case 'h': 92 default: 93 (void)fprintf(stderr, "usage: rain [-d delay]\n"); 94 exit(1); 95 } 96 97 srandom(time((time_t *)NULL)); 98 initscr(); 99 tcols = COLS - 4; 100 tlines = LINES - 4; 101 102 (void)signal(SIGHUP, onsig); 103 (void)signal(SIGINT, onsig); 104 (void)signal(SIGQUIT, onsig); 105 (void)signal(SIGSTOP, onsig); 106 (void)signal(SIGTSTP, onsig); 107 (void)signal(SIGTERM, onsig); 108 109 curs_set(0); 110 for (j = 4; j >= 0; --j) { 111 xpos[j] = random() % tcols + 2; 112 ypos[j] = random() % tlines + 2; 113 } 114 for (j = 0;;) { 115 if (sig_caught) { 116 endwin(); 117 exit(0); 118 } 119 x = random() % tcols + 2; 120 y = random() % tlines + 2; 121 mvaddch(y, x, '.'); 122 mvaddch(ypos[j], xpos[j], 'o'); 123 if (!j--) 124 j = 4; 125 mvaddch(ypos[j], xpos[j], 'O'); 126 if (!j--) 127 j = 4; 128 mvaddch(ypos[j] - 1, xpos[j], '-'); 129 mvaddstr(ypos[j], xpos[j] - 1, "|.|"); 130 mvaddch(ypos[j] + 1, xpos[j], '-'); 131 if (!j--) 132 j = 4; 133 mvaddch(ypos[j] - 2, xpos[j], '-'); 134 mvaddstr(ypos[j] - 1, xpos[j] - 1, "/ \\"); 135 mvaddstr(ypos[j], xpos[j] - 2, "| O |"); 136 mvaddstr(ypos[j] + 1, xpos[j] - 1, "\\ /"); 137 mvaddch(ypos[j] + 2, xpos[j], '-'); 138 if (!j--) 139 j = 4; 140 mvaddch(ypos[j] - 2, xpos[j], ' '); 141 mvaddstr(ypos[j] - 1, xpos[j] - 1, " "); 142 mvaddstr(ypos[j], xpos[j] - 2, " "); 143 mvaddstr(ypos[j] + 1, xpos[j] - 1, " "); 144 mvaddch(ypos[j] + 2, xpos[j], ' '); 145 xpos[j] = x; 146 ypos[j] = y; 147 refresh(); 148 if (delay) usleep(delay); 149 } 150 } 151 152 static void 153 onsig(dummy) 154 int dummy; 155 { 156 sig_caught = 1; 157 } 158