| 1 | /* |
| 2 | * Copyright (c) 1980 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms are permitted |
| 6 | * provided that the above copyright notice and this paragraph are |
| 7 | * duplicated in all such forms and that any documentation, |
| 8 | * advertising materials, and other materials related to such |
| 9 | * distribution and use acknowledge that the software was developed |
| 10 | * by the University of California, Berkeley. The name of the |
| 11 | * University may not be used to endorse or promote products derived |
| 12 | * from this software without specific prior written permission. |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 16 | */ |
| 17 | |
| 18 | #ifndef lint |
| 19 | char copyright[] = |
| 20 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ |
| 21 | All rights reserved.\n"; |
| 22 | #endif /* not lint */ |
| 23 | |
| 24 | #ifndef lint |
| 25 | static char sccsid[] = "@(#)rain.c 5.4 (Berkeley) %G%"; |
| 26 | #endif /* not lint */ |
| 27 | |
| 28 | /* |
| 29 | * rain 11/3/1980 EPS/CITHEP |
| 30 | * cc rain.c -o rain -O -ltermlib |
| 31 | */ |
| 32 | |
| 33 | #include <sys/types.h> |
| 34 | #include <stdio.h> |
| 35 | #ifdef USG |
| 36 | #include <termio.h> |
| 37 | #else |
| 38 | #include <sgtty.h> |
| 39 | #endif |
| 40 | #include <signal.h> |
| 41 | |
| 42 | #define cursor(c, r) tputs(tgoto(CM, c, r), 1, fputchar) |
| 43 | |
| 44 | #ifdef USG |
| 45 | static struct termio sg, old_tty; |
| 46 | #else |
| 47 | static struct sgttyb sg, old_tty; |
| 48 | #endif |
| 49 | |
| 50 | int fputchar(); |
| 51 | char *LL, *TE, *tgoto(); |
| 52 | |
| 53 | main(argc, argv) |
| 54 | int argc; |
| 55 | char **argv; |
| 56 | { |
| 57 | extern short ospeed; |
| 58 | extern char *UP; |
| 59 | register int x, y, j; |
| 60 | register char *CM, *BC, *DN, *ND, *term; |
| 61 | char *TI, *tcp, *mp, tcb[100], |
| 62 | *malloc(), *getenv(), *strcpy(), *tgetstr(); |
| 63 | long cols, lines, random(); |
| 64 | int xpos[5], ypos[5], onsig(); |
| 65 | |
| 66 | if (!(term = getenv("TERM"))) { |
| 67 | fprintf(stderr, "%s: TERM: parameter not set\n", *argv); |
| 68 | exit(1); |
| 69 | } |
| 70 | if (!(mp = malloc((u_int)1024))) { |
| 71 | fprintf(stderr, "%s: out of space.\n", *argv); |
| 72 | exit(1); |
| 73 | } |
| 74 | if (tgetent(mp, term) <= 0) { |
| 75 | fprintf(stderr, "%s: %s: unknown terminal type\n", *argv, term); |
| 76 | exit(1); |
| 77 | } |
| 78 | tcp = tcb; |
| 79 | if (!(CM = tgetstr("cm", &tcp))) { |
| 80 | fprintf(stderr, "%s: terminal not capable of cursor motion\n", *argv); |
| 81 | exit(1); |
| 82 | } |
| 83 | if (!(BC = tgetstr("bc", &tcp))) |
| 84 | BC = "\b"; |
| 85 | if (!(DN = tgetstr("dn", &tcp))) |
| 86 | DN = "\n"; |
| 87 | if (!(ND = tgetstr("nd", &tcp))) |
| 88 | ND = " "; |
| 89 | if ((cols = tgetnum("co")) == -1) |
| 90 | cols = 80; |
| 91 | if ((lines = tgetnum("li")) == -1) |
| 92 | lines = 24; |
| 93 | cols -= 4; |
| 94 | lines -= 4; |
| 95 | TE = tgetstr("te", &tcp); |
| 96 | TI = tgetstr("ti", &tcp); |
| 97 | UP = tgetstr("up", &tcp); |
| 98 | if (!(LL = tgetstr("ll", &tcp))) { |
| 99 | if (!(LL = malloc((u_int)10))) { |
| 100 | fprintf(stderr, "%s: out of space.\n", *argv); |
| 101 | exit(1); |
| 102 | } |
| 103 | (void)strcpy(LL, tgoto(CM, 0, 23)); |
| 104 | } |
| 105 | #ifdef USG |
| 106 | ioctl(1, TCGETA, &sg); |
| 107 | ospeed = sg.c_cflag&CBAUD; |
| 108 | #else |
| 109 | gtty(1, &sg); |
| 110 | ospeed = sg.sg_ospeed; |
| 111 | #endif |
| 112 | (void)signal(SIGHUP, onsig); |
| 113 | (void)signal(SIGINT, onsig); |
| 114 | (void)signal(SIGQUIT, onsig); |
| 115 | (void)signal(SIGSTOP, onsig); |
| 116 | (void)signal(SIGTSTP, onsig); |
| 117 | (void)signal(SIGTERM, onsig); |
| 118 | #ifdef USG |
| 119 | ioctl(1, TCGETA, &old_tty); /* save tty bits for exit */ |
| 120 | ioctl(1, TCGETA, &sg); |
| 121 | sg.c_iflag &= ~ICRNL; |
| 122 | sg.c_oflag &= ~ONLCR; |
| 123 | sg.c_lflag &= ~ECHO; |
| 124 | ioctl(1, TCSETAW, &sg); |
| 125 | #else |
| 126 | gtty(1, &old_tty); /* save tty bits for exit */ |
| 127 | gtty(1, &sg); |
| 128 | sg.sg_flags &= ~(CRMOD|ECHO); |
| 129 | stty(1, &sg); |
| 130 | #endif |
| 131 | if (TI) |
| 132 | tputs(TI, 1, fputchar); |
| 133 | tputs(tgetstr("cl", &tcp), 1, fputchar); |
| 134 | (void)fflush(stdout); |
| 135 | for (j = 4; j >= 0; --j) { |
| 136 | xpos[j] = random() % cols + 2; |
| 137 | ypos[j] = random() % lines + 2; |
| 138 | } |
| 139 | for (j = 0;;) { |
| 140 | x = random() % cols + 2; |
| 141 | y = random() % lines + 2; |
| 142 | cursor(x, y); |
| 143 | fputchar('.'); |
| 144 | cursor(xpos[j], ypos[j]); |
| 145 | fputchar('o'); |
| 146 | if (!j--) |
| 147 | j = 4; |
| 148 | cursor(xpos[j], ypos[j]); |
| 149 | fputchar('O'); |
| 150 | if (!j--) |
| 151 | j = 4; |
| 152 | cursor(xpos[j], ypos[j] - 1); |
| 153 | fputchar('-'); |
| 154 | tputs(DN, 1, fputchar); |
| 155 | tputs(BC, 1, fputchar); |
| 156 | tputs(BC, 1, fputchar); |
| 157 | fputs("|.|", stdout); |
| 158 | tputs(DN, 1, fputchar); |
| 159 | tputs(BC, 1, fputchar); |
| 160 | tputs(BC, 1, fputchar); |
| 161 | fputchar('-'); |
| 162 | if (!j--) |
| 163 | j = 4; |
| 164 | cursor(xpos[j], ypos[j] - 2); |
| 165 | fputchar('-'); |
| 166 | tputs(DN, 1, fputchar); |
| 167 | tputs(BC, 1, fputchar); |
| 168 | tputs(BC, 1, fputchar); |
| 169 | fputs("/ \\", stdout); |
| 170 | cursor(xpos[j] - 2, ypos[j]); |
| 171 | fputs("| O |", stdout); |
| 172 | cursor(xpos[j] - 1, ypos[j] + 1); |
| 173 | fputs("\\ /", stdout); |
| 174 | tputs(DN, 1, fputchar); |
| 175 | tputs(BC, 1, fputchar); |
| 176 | tputs(BC, 1, fputchar); |
| 177 | fputchar('-'); |
| 178 | if (!j--) |
| 179 | j = 4; |
| 180 | cursor(xpos[j], ypos[j] - 2); |
| 181 | fputchar(' '); |
| 182 | tputs(DN, 1, fputchar); |
| 183 | tputs(BC, 1, fputchar); |
| 184 | tputs(BC, 1, fputchar); |
| 185 | fputchar(' '); |
| 186 | tputs(ND, 1, fputchar); |
| 187 | fputchar(' '); |
| 188 | cursor(xpos[j] - 2, ypos[j]); |
| 189 | fputchar(' '); |
| 190 | tputs(ND, 1, fputchar); |
| 191 | fputchar(' '); |
| 192 | tputs(ND, 1, fputchar); |
| 193 | fputchar(' '); |
| 194 | cursor(xpos[j] - 1, ypos[j] + 1); |
| 195 | fputchar(' '); |
| 196 | tputs(ND, 1, fputchar); |
| 197 | fputchar(' '); |
| 198 | tputs(DN, 1, fputchar); |
| 199 | tputs(BC, 1, fputchar); |
| 200 | tputs(BC, 1, fputchar); |
| 201 | fputchar(' '); |
| 202 | xpos[j] = x; |
| 203 | ypos[j] = y; |
| 204 | (void)fflush(stdout); |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | static |
| 209 | onsig() |
| 210 | { |
| 211 | tputs(LL, 1, fputchar); |
| 212 | if (TE) |
| 213 | tputs(TE, 1, fputchar); |
| 214 | (void)fflush(stdout); |
| 215 | #ifdef USG |
| 216 | ioctl(1, TCSETAW, &old_tty); |
| 217 | #else |
| 218 | stty(1, &old_tty); |
| 219 | #endif |
| 220 | exit(0); |
| 221 | } |
| 222 | |
| 223 | static |
| 224 | fputchar(c) |
| 225 | char c; |
| 226 | { |
| 227 | putchar(c); |
| 228 | } |