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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)rain.c 8.1 (Berkeley) 5/31/93 35 * $FreeBSD: src/games/rain/rain.c,v 1.8.2.1 2001/03/05 11:54:10 kris Exp $ 36 * $DragonFly: src/games/rain/rain.c,v 1.3 2003/11/12 14:53:54 eirikn Exp $ 37 */ 38 39 /* 40 * rain 11/3/1980 EPS/CITHEP 41 * cc rain.c -o rain -O -ltermlib 42 */ 43 44 #include <sys/types.h> 45 #include <curses.h> 46 #include <err.h> 47 #include <stdio.h> 48 #include <signal.h> 49 #include <stdlib.h> 50 #include <unistd.h> 51 52 volatile sig_atomic_t sig_caught = 0; 53 54 static void onsig (int sig); 55 56 int 57 main(int argc, char **argv) 58 { 59 int x, y, j; 60 long cols, lines; 61 int xpos[5], ypos[5]; 62 unsigned int delay = 0; 63 int ch; 64 65 while ((ch = getopt(argc, argv, "d:h")) != -1) 66 switch (ch) { 67 case 'd': 68 if ((delay = (unsigned int)strtoul(optarg, (char **)NULL, 10)) < 1 69 || delay > 1000) 70 errx(1, "invalid delay (1-1000)"); 71 delay *= 1000; /* ms -> us */ 72 break; 73 case 'h': 74 default: 75 (void)fprintf(stderr, "usage: rain [-d delay]\n"); 76 exit(1); 77 } 78 srandomdev(); 79 80 initscr(); 81 cols = COLS - 4; 82 lines = LINES - 4; 83 84 (void)signal(SIGHUP, onsig); 85 (void)signal(SIGINT, onsig); 86 (void)signal(SIGQUIT, onsig); 87 (void)signal(SIGSTOP, onsig); 88 (void)signal(SIGTSTP, onsig); 89 (void)signal(SIGTERM, onsig); 90 91 for (j = 4; j >= 0; --j) { 92 xpos[j] = random() % cols + 2; 93 ypos[j] = random() % lines + 2; 94 } 95 for (j = 0;;) { 96 if (sig_caught) { 97 endwin(); 98 exit(0); 99 } 100 x = random() % cols + 2; 101 y = random() % lines + 2; 102 mvaddch(y, x, '.'); 103 mvaddch(ypos[j], xpos[j], 'o'); 104 if (!j--) 105 j = 4; 106 mvaddch(ypos[j], xpos[j], 'O'); 107 if (!j--) 108 j = 4; 109 mvaddch(ypos[j] - 1, xpos[j], '-'); 110 mvaddstr(ypos[j], xpos[j] - 1, "|.|"); 111 mvaddch(ypos[j] + 1, xpos[j], '-'); 112 if (!j--) 113 j = 4; 114 mvaddch(ypos[j] - 2, xpos[j], '-'); 115 mvaddstr(ypos[j] - 1, xpos[j] - 1, "/ \\"); 116 mvaddstr(ypos[j], xpos[j] - 2, "| O |"); 117 mvaddstr(ypos[j] + 1, xpos[j] - 1, "\\ /"); 118 mvaddch(ypos[j] + 2, xpos[j], '-'); 119 if (!j--) 120 j = 4; 121 mvaddch(ypos[j] - 2, xpos[j], ' '); 122 mvaddstr(ypos[j] - 1, xpos[j] - 1, " "); 123 mvaddstr(ypos[j], xpos[j] - 2, " "); 124 mvaddstr(ypos[j] + 1, xpos[j] - 1, " "); 125 mvaddch(ypos[j] + 2, xpos[j], ' '); 126 xpos[j] = x; 127 ypos[j] = y; 128 refresh(); 129 if (delay) usleep(delay); 130 } 131 } 132 133 static void 134 onsig(int sig) 135 { 136 137 sig = 0; 138 sig_caught = 1; 139 } 140