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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. | |
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16 | */ |
17 | ||
18 | #ifndef lint | |
19 | char copyright[] = | |
20 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
21 | All rights reserved.\n"; | |
c54d1a23 | 22 | #endif /* not lint */ |
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23 | |
24 | #ifndef lint | |
f4f66d2c | 25 | static char sccsid[] = "@(#)worm.c 5.5 (Berkeley) %G%"; |
c54d1a23 | 26 | #endif /* not lint */ |
c4e6edfa KM |
27 | |
28 | /* | |
29 | * Worm. Written by Michael Toy | |
30 | * UCSC | |
31 | */ | |
32 | ||
33 | #include <ctype.h> | |
34 | #include <curses.h> | |
35 | #include <signal.h> | |
36 | ||
37 | #define newlink() (struct body *) malloc(sizeof (struct body)); | |
38 | #define HEAD '@' | |
39 | #define BODY 'o' | |
40 | #define LENGTH 7 | |
41 | #define RUNLEN 8 | |
42 | #define when break;case | |
43 | #define otherwise break;default | |
3831612d | 44 | #define CNTRL(p) (p-'A'+1) |
aba3284a | 45 | #ifndef baudrate |
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46 | # define baudrate() _tty.sg_ospeed |
47 | #endif | |
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48 | |
49 | WINDOW *tv; | |
50 | WINDOW *stw; | |
51 | struct body { | |
52 | int x; | |
53 | int y; | |
54 | struct body *prev; | |
55 | struct body *next; | |
56 | } *head, *tail, goody; | |
57 | int growing = 0; | |
58 | int running = 0; | |
73ead3d6 | 59 | int slow = 0; |
c4e6edfa KM |
60 | int score = 0; |
61 | int start_len = LENGTH; | |
62 | char lastch; | |
63 | char outbuf[BUFSIZ]; | |
64 | ||
65 | main(argc, argv) | |
66 | char **argv; | |
67 | { | |
68 | int leave(), wake(), suspend(); | |
69 | char ch; | |
70 | ||
71 | if (argc == 2) | |
72 | start_len = atoi(argv[1]); | |
73 | if ((start_len <= 0) || (start_len > 500)) | |
74 | start_len = LENGTH; | |
75 | setbuf(stdout, outbuf); | |
76 | srand(getpid()); | |
77 | signal(SIGALRM, wake); | |
78 | signal(SIGINT, leave); | |
79 | signal(SIGQUIT, leave); | |
80 | #ifdef SIGTSTP | |
81 | signal(SIGTSTP, suspend); /* process control signal */ | |
82 | #endif | |
83 | initscr(); | |
84 | crmode(); | |
85 | noecho(); | |
73ead3d6 | 86 | slow = (baudrate() <= B1200); |
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87 | clear(); |
88 | stw = newwin(1, COLS-1, 0, 0); | |
89 | tv = newwin(LINES-1, COLS-1, 1, 0); | |
90 | box(tv, '*', '*'); | |
91 | scrollok(tv, FALSE); | |
92 | scrollok(stw, FALSE); | |
93 | wmove(stw, 0, 0); | |
94 | wprintw(stw, " Worm"); | |
95 | refresh(); | |
96 | wrefresh(stw); | |
97 | wrefresh(tv); | |
98 | life(); /* Create the worm */ | |
99 | prize(); /* Put up a goal */ | |
100 | while(1) | |
101 | { | |
102 | if (running) | |
103 | { | |
104 | running--; | |
105 | process(lastch); | |
106 | } | |
107 | else | |
108 | { | |
109 | fflush(stdout); | |
110 | if (read(0, &ch, 1) >= 0) | |
111 | process(ch); | |
112 | } | |
113 | } | |
114 | } | |
115 | ||
116 | life() | |
117 | { | |
118 | register struct body *bp, *np; | |
119 | register int i; | |
120 | ||
121 | head = newlink(); | |
122 | head->x = start_len+2; | |
123 | head->y = 12; | |
124 | head->next = NULL; | |
125 | display(head, HEAD); | |
126 | for (i = 0, bp = head; i < start_len; i++, bp = np) { | |
127 | np = newlink(); | |
128 | np->next = bp; | |
129 | bp->prev = np; | |
130 | np->x = bp->x - 1; | |
131 | np->y = bp->y; | |
132 | display(np, BODY); | |
133 | } | |
134 | tail = np; | |
135 | tail->prev = NULL; | |
c4e6edfa KM |
136 | } |
137 | ||
138 | display(pos, chr) | |
139 | struct body *pos; | |
140 | char chr; | |
141 | { | |
142 | wmove(tv, pos->y, pos->x); | |
143 | waddch(tv, chr); | |
144 | } | |
145 | ||
146 | leave() | |
147 | { | |
148 | endwin(); | |
149 | exit(0); | |
150 | } | |
151 | ||
152 | wake() | |
153 | { | |
154 | signal(SIGALRM, wake); | |
155 | fflush(stdout); | |
156 | process(lastch); | |
157 | } | |
158 | ||
159 | rnd(range) | |
160 | { | |
161 | return abs((rand()>>5)+(rand()>>5)) % range; | |
162 | } | |
163 | ||
164 | newpos(bp) | |
165 | struct body * bp; | |
166 | { | |
167 | do { | |
168 | bp->y = rnd(LINES-3)+ 2; | |
169 | bp->x = rnd(COLS-3) + 1; | |
170 | wmove(tv, bp->y, bp->x); | |
171 | } while(winch(tv) != ' '); | |
172 | } | |
173 | ||
174 | prize() | |
175 | { | |
176 | int value; | |
177 | ||
178 | value = rnd(9) + 1; | |
179 | newpos(&goody); | |
180 | waddch(tv, value+'0'); | |
181 | wrefresh(tv); | |
182 | } | |
183 | ||
184 | process(ch) | |
185 | char ch; | |
186 | { | |
187 | register int x,y; | |
188 | struct body *nh; | |
189 | ||
190 | alarm(0); | |
191 | x = head->x; | |
192 | y = head->y; | |
193 | switch(ch) | |
194 | { | |
195 | when 'h': x--; | |
196 | when 'j': y++; | |
197 | when 'k': y--; | |
198 | when 'l': x++; | |
199 | when 'H': x--; running = RUNLEN; ch = tolower(ch); | |
200 | when 'J': y++; running = RUNLEN/2; ch = tolower(ch); | |
201 | when 'K': y--; running = RUNLEN/2; ch = tolower(ch); | |
202 | when 'L': x++; running = RUNLEN; ch = tolower(ch); | |
203 | when '\f': setup(); return; | |
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204 | when CNTRL('Z'): suspend(); return; |
205 | when CNTRL('C'): crash(); return; | |
206 | when CNTRL('D'): crash(); return; | |
c4e6edfa KM |
207 | otherwise: if (! running) alarm(1); |
208 | return; | |
209 | } | |
210 | lastch = ch; | |
211 | if (growing == 0) | |
212 | { | |
213 | display(tail, ' '); | |
214 | tail->next->prev = NULL; | |
215 | nh = tail->next; | |
216 | free(tail); | |
217 | tail = nh; | |
218 | } | |
219 | else growing--; | |
220 | display(head, BODY); | |
221 | wmove(tv, y, x); | |
222 | if (isdigit(ch = winch(tv))) | |
223 | { | |
224 | growing += ch-'0'; | |
225 | prize(); | |
226 | score += growing; | |
227 | running = 0; | |
228 | wmove(stw, 0, 68); | |
229 | wprintw(stw, "Score: %3d", score); | |
230 | wrefresh(stw); | |
231 | } | |
232 | else if(ch != ' ') crash(); | |
233 | nh = newlink(); | |
234 | nh->next = NULL; | |
235 | nh->prev = head; | |
236 | head->next = nh; | |
237 | nh->y = y; | |
238 | nh->x = x; | |
239 | display(nh, HEAD); | |
240 | head = nh; | |
73ead3d6 KA |
241 | if (!(slow && running)) |
242 | wrefresh(tv); | |
243 | if (!running) | |
244 | alarm(1); | |
c4e6edfa KM |
245 | } |
246 | ||
247 | crash() | |
248 | { | |
249 | sleep(2); | |
250 | clear(); | |
251 | move(23, 0); | |
252 | refresh(); | |
253 | printf("Well you ran into something and the game is over.\n"); | |
254 | printf("Your final score was %d\n", score); | |
255 | leave(); | |
256 | } | |
257 | ||
258 | suspend() | |
259 | { | |
260 | char *sh; | |
261 | ||
262 | move(LINES-1, 0); | |
263 | refresh(); | |
264 | endwin(); | |
265 | fflush(stdout); | |
266 | #ifdef SIGTSTP | |
267 | kill(getpid(), SIGTSTP); | |
268 | signal(SIGTSTP, suspend); | |
269 | #else | |
270 | sh = getenv("SHELL"); | |
271 | if (sh == NULL) | |
272 | sh = "/bin/sh"; | |
273 | system(sh); | |
274 | #endif | |
275 | crmode(); | |
276 | noecho(); | |
277 | setup(); | |
278 | } | |
279 | ||
280 | setup() | |
281 | { | |
282 | clear(); | |
283 | refresh(); | |
284 | touchwin(stw); | |
285 | wrefresh(stw); | |
286 | touchwin(tv); | |
287 | wrefresh(tv); | |
288 | alarm(1); | |
289 | } |