1 /* 2 * Copyright (c) 1980 Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 char copyright[] = 10 "@(#) Copyright (c) 1980 Regents of the University of California.\n\ 11 All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)rain.c 5.7 (Berkeley) 02/03/93"; 16 #endif /* not lint */ 17 18 /* 19 * rain 11/3/1980 EPS/CITHEP 20 * cc rain.c -o rain -O -ltermlib 21 */ 22 23 #include <sys/types.h> 24 #include <stdio.h> 25 #ifdef USG 26 #include <termio.h> 27 #else 28 #include <sgtty.h> 29 #endif 30 #include <signal.h> 31 32 #define cursor(c, r) tputs(tgoto(CM, c, r), 1, fputchar) 33 34 #ifdef USG 35 static struct termio sg, old_tty; 36 #else 37 static struct sgttyb sg, old_tty; 38 #endif 39 40 int fputchar(); 41 char *LL, *TE, *tgoto(); 42 43 main(argc, argv) 44 int argc; 45 char **argv; 46 { 47 extern short ospeed; 48 extern char *UP; 49 register int x, y, j; 50 register char *CM, *BC, *DN, *ND, *term; 51 char *TI, *tcp, *mp, tcb[100], 52 *malloc(), *getenv(), *strcpy(), *tgetstr(); 53 long cols, lines, random(); 54 int xpos[5], ypos[5]; 55 static void onsig(); 56 57 if (!(term = getenv("TERM"))) { 58 fprintf(stderr, "%s: TERM: parameter not set\n", *argv); 59 exit(1); 60 } 61 if (!(mp = malloc((u_int)1024))) { 62 fprintf(stderr, "%s: out of space.\n", *argv); 63 exit(1); 64 } 65 if (tgetent(mp, term) <= 0) { 66 fprintf(stderr, "%s: %s: unknown terminal type\n", *argv, term); 67 exit(1); 68 } 69 tcp = tcb; 70 if (!(CM = tgetstr("cm", &tcp))) { 71 fprintf(stderr, "%s: terminal not capable of cursor motion\n", *argv); 72 exit(1); 73 } 74 if (!(BC = tgetstr("bc", &tcp))) 75 BC = "\b"; 76 if (!(DN = tgetstr("dn", &tcp))) 77 DN = "\n"; 78 if (!(ND = tgetstr("nd", &tcp))) 79 ND = " "; 80 if ((cols = tgetnum("co")) == -1) 81 cols = 80; 82 if ((lines = tgetnum("li")) == -1) 83 lines = 24; 84 cols -= 4; 85 lines -= 4; 86 TE = tgetstr("te", &tcp); 87 TI = tgetstr("ti", &tcp); 88 UP = tgetstr("up", &tcp); 89 if (!(LL = tgetstr("ll", &tcp))) { 90 if (!(LL = malloc((u_int)10))) { 91 fprintf(stderr, "%s: out of space.\n", *argv); 92 exit(1); 93 } 94 (void)strcpy(LL, tgoto(CM, 0, 23)); 95 } 96 #ifdef USG 97 ioctl(1, TCGETA, &sg); 98 ospeed = sg.c_cflag&CBAUD; 99 #else 100 gtty(1, &sg); 101 ospeed = sg.sg_ospeed; 102 #endif 103 (void)signal(SIGHUP, onsig); 104 (void)signal(SIGINT, onsig); 105 (void)signal(SIGQUIT, onsig); 106 (void)signal(SIGSTOP, onsig); 107 (void)signal(SIGTSTP, onsig); 108 (void)signal(SIGTERM, onsig); 109 #ifdef USG 110 ioctl(1, TCGETA, &old_tty); /* save tty bits for exit */ 111 ioctl(1, TCGETA, &sg); 112 sg.c_iflag &= ~ICRNL; 113 sg.c_oflag &= ~ONLCR; 114 sg.c_lflag &= ~ECHO; 115 ioctl(1, TCSETAW, &sg); 116 #else 117 gtty(1, &old_tty); /* save tty bits for exit */ 118 gtty(1, &sg); 119 sg.sg_flags &= ~(CRMOD|ECHO); 120 stty(1, &sg); 121 #endif 122 if (TI) 123 tputs(TI, 1, fputchar); 124 tputs(tgetstr("cl", &tcp), 1, fputchar); 125 (void)fflush(stdout); 126 for (j = 4; j >= 0; --j) { 127 xpos[j] = random() % cols + 2; 128 ypos[j] = random() % lines + 2; 129 } 130 for (j = 0;;) { 131 x = random() % cols + 2; 132 y = random() % lines + 2; 133 cursor(x, y); 134 fputchar('.'); 135 cursor(xpos[j], ypos[j]); 136 fputchar('o'); 137 if (!j--) 138 j = 4; 139 cursor(xpos[j], ypos[j]); 140 fputchar('O'); 141 if (!j--) 142 j = 4; 143 cursor(xpos[j], ypos[j] - 1); 144 fputchar('-'); 145 tputs(DN, 1, fputchar); 146 tputs(BC, 1, fputchar); 147 tputs(BC, 1, fputchar); 148 fputs("|.|", stdout); 149 tputs(DN, 1, fputchar); 150 tputs(BC, 1, fputchar); 151 tputs(BC, 1, fputchar); 152 fputchar('-'); 153 if (!j--) 154 j = 4; 155 cursor(xpos[j], ypos[j] - 2); 156 fputchar('-'); 157 tputs(DN, 1, fputchar); 158 tputs(BC, 1, fputchar); 159 tputs(BC, 1, fputchar); 160 fputs("/ \\", stdout); 161 cursor(xpos[j] - 2, ypos[j]); 162 fputs("| O |", stdout); 163 cursor(xpos[j] - 1, ypos[j] + 1); 164 fputs("\\ /", stdout); 165 tputs(DN, 1, fputchar); 166 tputs(BC, 1, fputchar); 167 tputs(BC, 1, fputchar); 168 fputchar('-'); 169 if (!j--) 170 j = 4; 171 cursor(xpos[j], ypos[j] - 2); 172 fputchar(' '); 173 tputs(DN, 1, fputchar); 174 tputs(BC, 1, fputchar); 175 tputs(BC, 1, fputchar); 176 fputchar(' '); 177 tputs(ND, 1, fputchar); 178 fputchar(' '); 179 cursor(xpos[j] - 2, ypos[j]); 180 fputchar(' '); 181 tputs(ND, 1, fputchar); 182 fputchar(' '); 183 tputs(ND, 1, fputchar); 184 fputchar(' '); 185 cursor(xpos[j] - 1, ypos[j] + 1); 186 fputchar(' '); 187 tputs(ND, 1, fputchar); 188 fputchar(' '); 189 tputs(DN, 1, fputchar); 190 tputs(BC, 1, fputchar); 191 tputs(BC, 1, fputchar); 192 fputchar(' '); 193 xpos[j] = x; 194 ypos[j] = y; 195 (void)fflush(stdout); 196 } 197 } 198 199 static void 200 onsig() 201 { 202 tputs(LL, 1, fputchar); 203 if (TE) 204 tputs(TE, 1, fputchar); 205 (void)fflush(stdout); 206 #ifdef USG 207 ioctl(1, TCSETAW, &old_tty); 208 #else 209 stty(1, &old_tty); 210 #endif 211 exit(0); 212 } 213 214 int 215 fputchar(c) 216 int c; 217 { 218 putchar(c); 219 } 220