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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 | |
6 | * provided that this notice is preserved and that due credit is given | |
7 | * to the University of California at Berkeley. The name of the University | |
8 | * may not be used to endorse or promote products derived from this | |
9 | * software without specific prior written permission. This software | |
10 | * is provided ``as is'' without express or implied warranty. | |
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11 | */ |
12 | ||
13 | #ifndef lint | |
14 | char copyright[] = | |
15 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
16 | All rights reserved.\n"; | |
c54d1a23 | 17 | #endif /* not lint */ |
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18 | |
19 | #ifndef lint | |
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20 | static char sccsid[] = "@(#)worm.c 5.4 (Berkeley) %G%"; |
21 | #endif /* not lint */ | |
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22 | |
23 | /* | |
24 | * Worm. Written by Michael Toy | |
25 | * UCSC | |
26 | */ | |
27 | ||
28 | #include <ctype.h> | |
29 | #include <curses.h> | |
30 | #include <signal.h> | |
31 | ||
32 | #define newlink() (struct body *) malloc(sizeof (struct body)); | |
33 | #define HEAD '@' | |
34 | #define BODY 'o' | |
35 | #define LENGTH 7 | |
36 | #define RUNLEN 8 | |
37 | #define when break;case | |
38 | #define otherwise break;default | |
3831612d | 39 | #define CNTRL(p) (p-'A'+1) |
aba3284a | 40 | #ifndef baudrate |
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41 | # define baudrate() _tty.sg_ospeed |
42 | #endif | |
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43 | |
44 | WINDOW *tv; | |
45 | WINDOW *stw; | |
46 | struct body { | |
47 | int x; | |
48 | int y; | |
49 | struct body *prev; | |
50 | struct body *next; | |
51 | } *head, *tail, goody; | |
52 | int growing = 0; | |
53 | int running = 0; | |
73ead3d6 | 54 | int slow = 0; |
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55 | int score = 0; |
56 | int start_len = LENGTH; | |
57 | char lastch; | |
58 | char outbuf[BUFSIZ]; | |
59 | ||
60 | main(argc, argv) | |
61 | char **argv; | |
62 | { | |
63 | int leave(), wake(), suspend(); | |
64 | char ch; | |
65 | ||
66 | if (argc == 2) | |
67 | start_len = atoi(argv[1]); | |
68 | if ((start_len <= 0) || (start_len > 500)) | |
69 | start_len = LENGTH; | |
70 | setbuf(stdout, outbuf); | |
71 | srand(getpid()); | |
72 | signal(SIGALRM, wake); | |
73 | signal(SIGINT, leave); | |
74 | signal(SIGQUIT, leave); | |
75 | #ifdef SIGTSTP | |
76 | signal(SIGTSTP, suspend); /* process control signal */ | |
77 | #endif | |
78 | initscr(); | |
79 | crmode(); | |
80 | noecho(); | |
73ead3d6 | 81 | slow = (baudrate() <= B1200); |
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82 | clear(); |
83 | stw = newwin(1, COLS-1, 0, 0); | |
84 | tv = newwin(LINES-1, COLS-1, 1, 0); | |
85 | box(tv, '*', '*'); | |
86 | scrollok(tv, FALSE); | |
87 | scrollok(stw, FALSE); | |
88 | wmove(stw, 0, 0); | |
89 | wprintw(stw, " Worm"); | |
90 | refresh(); | |
91 | wrefresh(stw); | |
92 | wrefresh(tv); | |
93 | life(); /* Create the worm */ | |
94 | prize(); /* Put up a goal */ | |
95 | while(1) | |
96 | { | |
97 | if (running) | |
98 | { | |
99 | running--; | |
100 | process(lastch); | |
101 | } | |
102 | else | |
103 | { | |
104 | fflush(stdout); | |
105 | if (read(0, &ch, 1) >= 0) | |
106 | process(ch); | |
107 | } | |
108 | } | |
109 | } | |
110 | ||
111 | life() | |
112 | { | |
113 | register struct body *bp, *np; | |
114 | register int i; | |
115 | ||
116 | head = newlink(); | |
117 | head->x = start_len+2; | |
118 | head->y = 12; | |
119 | head->next = NULL; | |
120 | display(head, HEAD); | |
121 | for (i = 0, bp = head; i < start_len; i++, bp = np) { | |
122 | np = newlink(); | |
123 | np->next = bp; | |
124 | bp->prev = np; | |
125 | np->x = bp->x - 1; | |
126 | np->y = bp->y; | |
127 | display(np, BODY); | |
128 | } | |
129 | tail = np; | |
130 | tail->prev = NULL; | |
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131 | } |
132 | ||
133 | display(pos, chr) | |
134 | struct body *pos; | |
135 | char chr; | |
136 | { | |
137 | wmove(tv, pos->y, pos->x); | |
138 | waddch(tv, chr); | |
139 | } | |
140 | ||
141 | leave() | |
142 | { | |
143 | endwin(); | |
144 | exit(0); | |
145 | } | |
146 | ||
147 | wake() | |
148 | { | |
149 | signal(SIGALRM, wake); | |
150 | fflush(stdout); | |
151 | process(lastch); | |
152 | } | |
153 | ||
154 | rnd(range) | |
155 | { | |
156 | return abs((rand()>>5)+(rand()>>5)) % range; | |
157 | } | |
158 | ||
159 | newpos(bp) | |
160 | struct body * bp; | |
161 | { | |
162 | do { | |
163 | bp->y = rnd(LINES-3)+ 2; | |
164 | bp->x = rnd(COLS-3) + 1; | |
165 | wmove(tv, bp->y, bp->x); | |
166 | } while(winch(tv) != ' '); | |
167 | } | |
168 | ||
169 | prize() | |
170 | { | |
171 | int value; | |
172 | ||
173 | value = rnd(9) + 1; | |
174 | newpos(&goody); | |
175 | waddch(tv, value+'0'); | |
176 | wrefresh(tv); | |
177 | } | |
178 | ||
179 | process(ch) | |
180 | char ch; | |
181 | { | |
182 | register int x,y; | |
183 | struct body *nh; | |
184 | ||
185 | alarm(0); | |
186 | x = head->x; | |
187 | y = head->y; | |
188 | switch(ch) | |
189 | { | |
190 | when 'h': x--; | |
191 | when 'j': y++; | |
192 | when 'k': y--; | |
193 | when 'l': x++; | |
194 | when 'H': x--; running = RUNLEN; ch = tolower(ch); | |
195 | when 'J': y++; running = RUNLEN/2; ch = tolower(ch); | |
196 | when 'K': y--; running = RUNLEN/2; ch = tolower(ch); | |
197 | when 'L': x++; running = RUNLEN; ch = tolower(ch); | |
198 | when '\f': setup(); return; | |
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199 | when CNTRL('Z'): suspend(); return; |
200 | when CNTRL('C'): crash(); return; | |
201 | when CNTRL('D'): crash(); return; | |
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202 | otherwise: if (! running) alarm(1); |
203 | return; | |
204 | } | |
205 | lastch = ch; | |
206 | if (growing == 0) | |
207 | { | |
208 | display(tail, ' '); | |
209 | tail->next->prev = NULL; | |
210 | nh = tail->next; | |
211 | free(tail); | |
212 | tail = nh; | |
213 | } | |
214 | else growing--; | |
215 | display(head, BODY); | |
216 | wmove(tv, y, x); | |
217 | if (isdigit(ch = winch(tv))) | |
218 | { | |
219 | growing += ch-'0'; | |
220 | prize(); | |
221 | score += growing; | |
222 | running = 0; | |
223 | wmove(stw, 0, 68); | |
224 | wprintw(stw, "Score: %3d", score); | |
225 | wrefresh(stw); | |
226 | } | |
227 | else if(ch != ' ') crash(); | |
228 | nh = newlink(); | |
229 | nh->next = NULL; | |
230 | nh->prev = head; | |
231 | head->next = nh; | |
232 | nh->y = y; | |
233 | nh->x = x; | |
234 | display(nh, HEAD); | |
235 | head = nh; | |
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236 | if (!(slow && running)) |
237 | wrefresh(tv); | |
238 | if (!running) | |
239 | alarm(1); | |
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240 | } |
241 | ||
242 | crash() | |
243 | { | |
244 | sleep(2); | |
245 | clear(); | |
246 | move(23, 0); | |
247 | refresh(); | |
248 | printf("Well you ran into something and the game is over.\n"); | |
249 | printf("Your final score was %d\n", score); | |
250 | leave(); | |
251 | } | |
252 | ||
253 | suspend() | |
254 | { | |
255 | char *sh; | |
256 | ||
257 | move(LINES-1, 0); | |
258 | refresh(); | |
259 | endwin(); | |
260 | fflush(stdout); | |
261 | #ifdef SIGTSTP | |
262 | kill(getpid(), SIGTSTP); | |
263 | signal(SIGTSTP, suspend); | |
264 | #else | |
265 | sh = getenv("SHELL"); | |
266 | if (sh == NULL) | |
267 | sh = "/bin/sh"; | |
268 | system(sh); | |
269 | #endif | |
270 | crmode(); | |
271 | noecho(); | |
272 | setup(); | |
273 | } | |
274 | ||
275 | setup() | |
276 | { | |
277 | clear(); | |
278 | refresh(); | |
279 | touchwin(stw); | |
280 | wrefresh(stw); | |
281 | touchwin(tv); | |
282 | wrefresh(tv); | |
283 | alarm(1); | |
284 | } |