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 */ 33 34 /* 35 * rain 11/3/1980 EPS/CITHEP 36 * cc rain.c -o rain -O -ltermlib 37 */ 38 39 #include <sys/types.h> 40 #include <curses.h> 41 #include <err.h> 42 #include <stdio.h> 43 #include <signal.h> 44 #include <stdlib.h> 45 #include <unistd.h> 46 47 volatile sig_atomic_t sig_caught = 0; 48 49 static void onsig (int sig); 50 51 int 52 main(int argc, char **argv) 53 { 54 int x, y, j; 55 long cols, lines; 56 int xpos[5], ypos[5]; 57 unsigned int delay = 0; 58 int ch; 59 60 while ((ch = getopt(argc, argv, "d:h")) != -1) 61 switch (ch) { 62 case 'd': 63 if ((delay = (unsigned int)strtoul(optarg, NULL, 10)) < 1 64 || delay > 1000) 65 errx(1, "invalid delay (1-1000)"); 66 delay *= 1000; /* ms -> us */ 67 break; 68 case 'h': 69 default: 70 (void)fprintf(stderr, "usage: rain [-d delay]\n"); 71 exit(1); 72 } 73 srandomdev(); 74 75 initscr(); 76 cols = COLS - 4; 77 lines = LINES - 4; 78 79 (void)signal(SIGHUP, onsig); 80 (void)signal(SIGINT, onsig); 81 (void)signal(SIGQUIT, onsig); 82 (void)signal(SIGSTOP, onsig); 83 (void)signal(SIGTSTP, onsig); 84 (void)signal(SIGTERM, onsig); 85 86 for (j = 4; j >= 0; --j) { 87 xpos[j] = random() % cols + 2; 88 ypos[j] = random() % lines + 2; 89 } 90 for (j = 0;;) { 91 if (sig_caught) { 92 endwin(); 93 exit(0); 94 } 95 x = random() % cols + 2; 96 y = random() % lines + 2; 97 mvaddch(y, x, '.'); 98 mvaddch(ypos[j], xpos[j], 'o'); 99 if (!j--) 100 j = 4; 101 mvaddch(ypos[j], xpos[j], 'O'); 102 if (!j--) 103 j = 4; 104 mvaddch(ypos[j] - 1, xpos[j], '-'); 105 mvaddstr(ypos[j], xpos[j] - 1, "|.|"); 106 mvaddch(ypos[j] + 1, xpos[j], '-'); 107 if (!j--) 108 j = 4; 109 mvaddch(ypos[j] - 2, xpos[j], '-'); 110 mvaddstr(ypos[j] - 1, xpos[j] - 1, "/ \\"); 111 mvaddstr(ypos[j], xpos[j] - 2, "| O |"); 112 mvaddstr(ypos[j] + 1, xpos[j] - 1, "\\ /"); 113 mvaddch(ypos[j] + 2, xpos[j], '-'); 114 if (!j--) 115 j = 4; 116 mvaddch(ypos[j] - 2, xpos[j], ' '); 117 mvaddstr(ypos[j] - 1, xpos[j] - 1, " "); 118 mvaddstr(ypos[j], xpos[j] - 2, " "); 119 mvaddstr(ypos[j] + 1, xpos[j] - 1, " "); 120 mvaddch(ypos[j] + 2, xpos[j], ' '); 121 xpos[j] = x; 122 ypos[j] = y; 123 refresh(); 124 if (delay) usleep(delay); 125 } 126 } 127 128 static void 129 onsig(__unused int sig) 130 { 131 sig_caught = 1; 132 } 133