rain.c revision 1.5
1 /* $NetBSD: rain.c,v 1.5 1995/04/22 08:23:37 cgd 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[] = "$NetBSD: rain.c,v 1.5 1995/04/22 08:23:37 cgd 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 <stdio.h> 57 #ifdef USG 58 #include <termio.h> 59 #else 60 #include <sgtty.h> 61 #endif 62 #include <signal.h> 63 64 #define cursor(c, r) tputs(tgoto(CM, c, r), 1, fputchar) 65 66 #ifdef USG 67 static struct termio sg, old_tty; 68 #else 69 static struct sgttyb sg, old_tty; 70 #endif 71 72 static void fputchar(); 73 char *LL, *TE, *tgoto(); 74 75 main(argc, argv) 76 int argc; 77 char **argv; 78 { 79 extern short ospeed; 80 extern char *UP; 81 register int x, y, j; 82 register char *CM, *BC, *DN, *ND, *term; 83 char *TI, *tcp, *mp, tcb[100], 84 *malloc(), *getenv(), *strcpy(), *tgetstr(); 85 long cols, lines, random(); 86 int xpos[5], ypos[5]; 87 static void onsig(); 88 #ifdef TIOCGWINSZ 89 struct winsize ws; 90 #endif 91 92 if (!(term = getenv("TERM"))) { 93 fprintf(stderr, "%s: TERM: parameter not set\n", *argv); 94 exit(1); 95 } 96 if (!(mp = malloc((u_int)1024))) { 97 fprintf(stderr, "%s: out of space.\n", *argv); 98 exit(1); 99 } 100 if (tgetent(mp, term) <= 0) { 101 fprintf(stderr, "%s: %s: unknown terminal type\n", *argv, term); 102 exit(1); 103 } 104 tcp = tcb; 105 if (!(CM = tgetstr("cm", &tcp))) { 106 fprintf(stderr, "%s: terminal not capable of cursor motion\n", *argv); 107 exit(1); 108 } 109 if (!(BC = tgetstr("bc", &tcp))) 110 BC = "\b"; 111 if (!(DN = tgetstr("dn", &tcp))) 112 DN = "\n"; 113 if (!(ND = tgetstr("nd", &tcp))) 114 ND = " "; 115 #ifdef TIOCGWINSZ 116 if (ioctl(fileno(stdout), TIOCGWINSZ, &ws) != -1 && 117 ws.ws_col && ws.ws_row) { 118 cols = ws.ws_col; 119 lines = ws.ws_row; 120 } else 121 #endif 122 { 123 if ((cols = tgetnum("co")) == -1) 124 cols = 80; 125 if ((lines = tgetnum("li")) == -1) 126 lines = 24; 127 } 128 cols -= 4; 129 lines -= 4; 130 TE = tgetstr("te", &tcp); 131 TI = tgetstr("ti", &tcp); 132 UP = tgetstr("up", &tcp); 133 if (!(LL = tgetstr("ll", &tcp))) { 134 if (!(LL = malloc((u_int)10))) { 135 fprintf(stderr, "%s: out of space.\n", *argv); 136 exit(1); 137 } 138 (void)strcpy(LL, tgoto(CM, 0, 23)); 139 } 140 #ifdef USG 141 ioctl(1, TCGETA, &sg); 142 ospeed = sg.c_cflag&CBAUD; 143 #else 144 gtty(1, &sg); 145 ospeed = sg.sg_ospeed; 146 #endif 147 (void)signal(SIGHUP, onsig); 148 (void)signal(SIGINT, onsig); 149 (void)signal(SIGQUIT, onsig); 150 (void)signal(SIGSTOP, onsig); 151 (void)signal(SIGTSTP, onsig); 152 (void)signal(SIGTERM, onsig); 153 #ifdef USG 154 ioctl(1, TCGETA, &old_tty); /* save tty bits for exit */ 155 ioctl(1, TCGETA, &sg); 156 sg.c_iflag &= ~ICRNL; 157 sg.c_oflag &= ~ONLCR; 158 sg.c_lflag &= ~ECHO; 159 ioctl(1, TCSETAW, &sg); 160 #else 161 gtty(1, &old_tty); /* save tty bits for exit */ 162 gtty(1, &sg); 163 sg.sg_flags &= ~(CRMOD|ECHO); 164 stty(1, &sg); 165 #endif 166 if (TI) 167 tputs(TI, 1, fputchar); 168 tputs(tgetstr("cl", &tcp), 1, fputchar); 169 (void)fflush(stdout); 170 for (j = 4; j >= 0; --j) { 171 xpos[j] = random() % cols + 2; 172 ypos[j] = random() % lines + 2; 173 } 174 for (j = 0;;) { 175 x = random() % cols + 2; 176 y = random() % lines + 2; 177 cursor(x, y); 178 fputchar('.'); 179 cursor(xpos[j], ypos[j]); 180 fputchar('o'); 181 if (!j--) 182 j = 4; 183 cursor(xpos[j], ypos[j]); 184 fputchar('O'); 185 if (!j--) 186 j = 4; 187 cursor(xpos[j], ypos[j] - 1); 188 fputchar('-'); 189 tputs(DN, 1, fputchar); 190 tputs(BC, 1, fputchar); 191 tputs(BC, 1, fputchar); 192 fputs("|.|", stdout); 193 tputs(DN, 1, fputchar); 194 tputs(BC, 1, fputchar); 195 tputs(BC, 1, fputchar); 196 fputchar('-'); 197 if (!j--) 198 j = 4; 199 cursor(xpos[j], ypos[j] - 2); 200 fputchar('-'); 201 tputs(DN, 1, fputchar); 202 tputs(BC, 1, fputchar); 203 tputs(BC, 1, fputchar); 204 fputs("/ \\", stdout); 205 cursor(xpos[j] - 2, ypos[j]); 206 fputs("| O |", stdout); 207 cursor(xpos[j] - 1, ypos[j] + 1); 208 fputs("\\ /", stdout); 209 tputs(DN, 1, fputchar); 210 tputs(BC, 1, fputchar); 211 tputs(BC, 1, fputchar); 212 fputchar('-'); 213 if (!j--) 214 j = 4; 215 cursor(xpos[j], ypos[j] - 2); 216 fputchar(' '); 217 tputs(DN, 1, fputchar); 218 tputs(BC, 1, fputchar); 219 tputs(BC, 1, fputchar); 220 fputchar(' '); 221 tputs(ND, 1, fputchar); 222 fputchar(' '); 223 cursor(xpos[j] - 2, ypos[j]); 224 fputchar(' '); 225 tputs(ND, 1, fputchar); 226 fputchar(' '); 227 tputs(ND, 1, fputchar); 228 fputchar(' '); 229 cursor(xpos[j] - 1, ypos[j] + 1); 230 fputchar(' '); 231 tputs(ND, 1, fputchar); 232 fputchar(' '); 233 tputs(DN, 1, fputchar); 234 tputs(BC, 1, fputchar); 235 tputs(BC, 1, fputchar); 236 fputchar(' '); 237 xpos[j] = x; 238 ypos[j] = y; 239 (void)fflush(stdout); 240 } 241 } 242 243 static void 244 onsig() 245 { 246 tputs(LL, 1, fputchar); 247 if (TE) 248 tputs(TE, 1, fputchar); 249 (void)fflush(stdout); 250 #ifdef USG 251 ioctl(1, TCSETAW, &old_tty); 252 #else 253 stty(1, &old_tty); 254 #endif 255 exit(0); 256 } 257 258 int 259 fputchar(c) 260 int c; 261 { 262 putchar(c); 263 } 264
Indexes created Tue Oct 28 12:10:06 GMT 2025