1 /*- 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved. 30 * @(#)rain.c 8.1 (Berkeley) 5/31/93 31 * $FreeBSD: src/games/rain/rain.c,v 1.8.2.1 2001/03/05 11:54:10 kris Exp $ 32 * $DragonFly: src/games/rain/rain.c,v 1.3 2003/11/12 14:53:54 eirikn Exp $ 33 */ 34 35 /* 36 * rain 11/3/1980 EPS/CITHEP 37 * cc rain.c -o rain -O -ltermlib 38 */ 39 40 #include <sys/types.h> 41 #include <curses.h> 42 #include <err.h> 43 #include <stdio.h> 44 #include <signal.h> 45 #include <stdlib.h> 46 #include <unistd.h> 47 48 volatile sig_atomic_t sig_caught = 0; 49 50 static void onsig (int sig); 51 52 int 53 main(int argc, char **argv) 54 { 55 int x, y, j; 56 long cols, lines; 57 int xpos[5], ypos[5]; 58 unsigned int delay = 0; 59 int ch; 60 61 while ((ch = getopt(argc, argv, "d:h")) != -1) 62 switch (ch) { 63 case 'd': 64 if ((delay = (unsigned int)strtoul(optarg, NULL, 10)) < 1 65 || delay > 1000) 66 errx(1, "invalid delay (1-1000)"); 67 delay *= 1000; /* ms -> us */ 68 break; 69 case 'h': 70 default: 71 (void)fprintf(stderr, "usage: rain [-d delay]\n"); 72 exit(1); 73 } 74 srandomdev(); 75 76 initscr(); 77 cols = COLS - 4; 78 lines = LINES - 4; 79 80 (void)signal(SIGHUP, onsig); 81 (void)signal(SIGINT, onsig); 82 (void)signal(SIGQUIT, onsig); 83 (void)signal(SIGSTOP, onsig); 84 (void)signal(SIGTSTP, onsig); 85 (void)signal(SIGTERM, onsig); 86 87 for (j = 4; j >= 0; --j) { 88 xpos[j] = random() % cols + 2; 89 ypos[j] = random() % lines + 2; 90 } 91 for (j = 0;;) { 92 if (sig_caught) { 93 endwin(); 94 exit(0); 95 } 96 x = random() % cols + 2; 97 y = random() % lines + 2; 98 mvaddch(y, x, '.'); 99 mvaddch(ypos[j], xpos[j], 'o'); 100 if (!j--) 101 j = 4; 102 mvaddch(ypos[j], xpos[j], 'O'); 103 if (!j--) 104 j = 4; 105 mvaddch(ypos[j] - 1, xpos[j], '-'); 106 mvaddstr(ypos[j], xpos[j] - 1, "|.|"); 107 mvaddch(ypos[j] + 1, xpos[j], '-'); 108 if (!j--) 109 j = 4; 110 mvaddch(ypos[j] - 2, xpos[j], '-'); 111 mvaddstr(ypos[j] - 1, xpos[j] - 1, "/ \\"); 112 mvaddstr(ypos[j], xpos[j] - 2, "| O |"); 113 mvaddstr(ypos[j] + 1, xpos[j] - 1, "\\ /"); 114 mvaddch(ypos[j] + 2, xpos[j], '-'); 115 if (!j--) 116 j = 4; 117 mvaddch(ypos[j] - 2, xpos[j], ' '); 118 mvaddstr(ypos[j] - 1, xpos[j] - 1, " "); 119 mvaddstr(ypos[j], xpos[j] - 2, " "); 120 mvaddstr(ypos[j] + 1, xpos[j] - 1, " "); 121 mvaddch(ypos[j] + 2, xpos[j], ' '); 122 xpos[j] = x; 123 ypos[j] = y; 124 refresh(); 125 if (delay) usleep(delay); 126 } 127 } 128 129 static void 130 onsig(int sig) 131 { 132 133 sig = 0; 134 sig_caught = 1; 135 } 136