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1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
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3 | * All rights reserved. |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
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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. | |
e0bbfbf9 | 16 | */ |
d5bda5f3 | 17 | |
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18 | #ifndef lint |
19 | char copyright[] = | |
20 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
21 | All rights reserved.\n"; | |
a9361314 | 22 | #endif /* not lint */ |
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23 | |
24 | #ifndef lint | |
f4f66d2c | 25 | static char sccsid[] = "@(#)rain.c 5.4 (Berkeley) %G%"; |
a9361314 | 26 | #endif /* not lint */ |
d5bda5f3 | 27 | |
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28 | /* |
29 | * rain 11/3/1980 EPS/CITHEP | |
30 | * cc rain.c -o rain -O -ltermlib | |
31 | */ | |
4334b5fc | 32 | |
a9361314 | 33 | #include <sys/types.h> |
d5bda5f3 | 34 | #include <stdio.h> |
4334b5fc KM |
35 | #ifdef USG |
36 | #include <termio.h> | |
37 | #else | |
d5bda5f3 | 38 | #include <sgtty.h> |
4334b5fc | 39 | #endif |
d5bda5f3 | 40 | #include <signal.h> |
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41 | |
42 | #define cursor(c, r) tputs(tgoto(CM, c, r), 1, fputchar) | |
43 | ||
4334b5fc | 44 | #ifdef USG |
a9361314 | 45 | static struct termio sg, old_tty; |
4334b5fc | 46 | #else |
a9361314 | 47 | static struct sgttyb sg, old_tty; |
4334b5fc | 48 | #endif |
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49 | |
50 | int fputchar(); | |
51 | char *LL, *TE, *tgoto(); | |
52 | ||
53 | main(argc, argv) | |
54 | int argc; | |
55 | char **argv; | |
d5bda5f3 | 56 | { |
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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(); | |
4334b5fc | 65 | |
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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 | } | |
4334b5fc | 105 | #ifdef USG |
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106 | ioctl(1, TCGETA, &sg); |
107 | ospeed = sg.c_cflag&CBAUD; | |
4334b5fc | 108 | #else |
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109 | gtty(1, &sg); |
110 | ospeed = sg.sg_ospeed; | |
4334b5fc | 111 | #endif |
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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); | |
4334b5fc | 118 | #ifdef USG |
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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); | |
4334b5fc | 125 | #else |
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126 | gtty(1, &old_tty); /* save tty bits for exit */ |
127 | gtty(1, &sg); | |
128 | sg.sg_flags &= ~(CRMOD|ECHO); | |
129 | stty(1, &sg); | |
4334b5fc | 130 | #endif |
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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 | } | |
d5bda5f3 | 206 | } |
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207 | |
208 | static | |
209 | onsig() | |
d5bda5f3 | 210 | { |
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211 | tputs(LL, 1, fputchar); |
212 | if (TE) | |
213 | tputs(TE, 1, fputchar); | |
214 | (void)fflush(stdout); | |
4334b5fc | 215 | #ifdef USG |
a9361314 | 216 | ioctl(1, TCSETAW, &old_tty); |
4334b5fc | 217 | #else |
a9361314 | 218 | stty(1, &old_tty); |
4334b5fc | 219 | #endif |
a9361314 | 220 | exit(0); |
d5bda5f3 | 221 | } |
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222 | |
223 | static | |
d5bda5f3 | 224 | fputchar(c) |
a9361314 | 225 | char c; |
d5bda5f3 | 226 | { |
a9361314 | 227 | putchar(c); |
d5bda5f3 | 228 | } |