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127d9952 WJ |
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, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | char copyright[] = | |
36 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)worm.c 5.8 (Berkeley) 2/28/91"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | /* | |
45 | * Worm. Written by Michael Toy | |
46 | * UCSC | |
47 | */ | |
48 | ||
49 | #include <ctype.h> | |
50 | #include <curses.h> | |
51 | #include <signal.h> | |
52 | ||
53 | #define newlink() (struct body *) malloc(sizeof (struct body)); | |
54 | #define HEAD '@' | |
55 | #define BODY 'o' | |
56 | #define LENGTH 7 | |
57 | #define RUNLEN 8 | |
58 | #define when break;case | |
59 | #define otherwise break;default | |
60 | #define CNTRL(p) (p-'A'+1) | |
61 | #ifndef baudrate | |
62 | # define baudrate() _tty.sg_ospeed | |
63 | #endif | |
64 | ||
65 | WINDOW *tv; | |
66 | WINDOW *stw; | |
67 | struct body { | |
68 | int x; | |
69 | int y; | |
70 | struct body *prev; | |
71 | struct body *next; | |
72 | } *head, *tail, goody; | |
73 | int growing = 0; | |
74 | int running = 0; | |
75 | int slow = 0; | |
76 | int score = 0; | |
77 | int start_len = LENGTH; | |
78 | char lastch; | |
79 | char outbuf[BUFSIZ]; | |
80 | ||
81 | void leave(), wake(), suspend(); | |
82 | ||
83 | main(argc, argv) | |
84 | int argc; | |
85 | char **argv; | |
86 | { | |
87 | char ch; | |
88 | ||
89 | if (argc == 2) | |
90 | start_len = atoi(argv[1]); | |
91 | if ((start_len <= 0) || (start_len > 500)) | |
92 | start_len = LENGTH; | |
93 | setbuf(stdout, outbuf); | |
94 | srand(getpid()); | |
95 | signal(SIGALRM, wake); | |
96 | signal(SIGINT, leave); | |
97 | signal(SIGQUIT, leave); | |
98 | signal(SIGTSTP, suspend); /* process control signal */ | |
99 | initscr(); | |
100 | crmode(); | |
101 | noecho(); | |
102 | slow = (baudrate() <= B1200); | |
103 | clear(); | |
104 | stw = newwin(1, COLS-1, 0, 0); | |
105 | tv = newwin(LINES-1, COLS-1, 1, 0); | |
106 | box(tv, '*', '*'); | |
107 | scrollok(tv, FALSE); | |
108 | scrollok(stw, FALSE); | |
109 | wmove(stw, 0, 0); | |
110 | wprintw(stw, " Worm"); | |
111 | refresh(); | |
112 | wrefresh(stw); | |
113 | wrefresh(tv); | |
114 | life(); /* Create the worm */ | |
115 | prize(); /* Put up a goal */ | |
116 | while(1) | |
117 | { | |
118 | if (running) | |
119 | { | |
120 | running--; | |
121 | process(lastch); | |
122 | } | |
123 | else | |
124 | { | |
125 | fflush(stdout); | |
126 | if (read(0, &ch, 1) >= 0) | |
127 | process(ch); | |
128 | } | |
129 | } | |
130 | } | |
131 | ||
132 | life() | |
133 | { | |
134 | register struct body *bp, *np; | |
135 | register int i; | |
136 | ||
137 | head = newlink(); | |
138 | head->x = start_len+2; | |
139 | head->y = 12; | |
140 | head->next = NULL; | |
141 | display(head, HEAD); | |
142 | for (i = 0, bp = head; i < start_len; i++, bp = np) { | |
143 | np = newlink(); | |
144 | np->next = bp; | |
145 | bp->prev = np; | |
146 | np->x = bp->x - 1; | |
147 | np->y = bp->y; | |
148 | display(np, BODY); | |
149 | } | |
150 | tail = np; | |
151 | tail->prev = NULL; | |
152 | } | |
153 | ||
154 | display(pos, chr) | |
155 | struct body *pos; | |
156 | char chr; | |
157 | { | |
158 | wmove(tv, pos->y, pos->x); | |
159 | waddch(tv, chr); | |
160 | } | |
161 | ||
162 | void | |
163 | leave() | |
164 | { | |
165 | endwin(); | |
166 | exit(0); | |
167 | } | |
168 | ||
169 | void | |
170 | wake() | |
171 | { | |
172 | signal(SIGALRM, wake); | |
173 | fflush(stdout); | |
174 | process(lastch); | |
175 | } | |
176 | ||
177 | rnd(range) | |
178 | { | |
179 | return abs((rand()>>5)+(rand()>>5)) % range; | |
180 | } | |
181 | ||
182 | newpos(bp) | |
183 | struct body * bp; | |
184 | { | |
185 | do { | |
186 | bp->y = rnd(LINES-3)+ 2; | |
187 | bp->x = rnd(COLS-3) + 1; | |
188 | wmove(tv, bp->y, bp->x); | |
189 | } while(winch(tv) != ' '); | |
190 | } | |
191 | ||
192 | prize() | |
193 | { | |
194 | int value; | |
195 | ||
196 | value = rnd(9) + 1; | |
197 | newpos(&goody); | |
198 | waddch(tv, value+'0'); | |
199 | wrefresh(tv); | |
200 | } | |
201 | ||
202 | process(ch) | |
203 | char ch; | |
204 | { | |
205 | register int x,y; | |
206 | struct body *nh; | |
207 | ||
208 | alarm(0); | |
209 | x = head->x; | |
210 | y = head->y; | |
211 | switch(ch) | |
212 | { | |
213 | when 'h': x--; | |
214 | when 'j': y++; | |
215 | when 'k': y--; | |
216 | when 'l': x++; | |
217 | when 'H': x--; running = RUNLEN; ch = tolower(ch); | |
218 | when 'J': y++; running = RUNLEN/2; ch = tolower(ch); | |
219 | when 'K': y--; running = RUNLEN/2; ch = tolower(ch); | |
220 | when 'L': x++; running = RUNLEN; ch = tolower(ch); | |
221 | when '\f': setup(); return; | |
222 | when CNTRL('Z'): suspend(); return; | |
223 | when CNTRL('C'): crash(); return; | |
224 | when CNTRL('D'): crash(); return; | |
225 | otherwise: if (! running) alarm(1); | |
226 | return; | |
227 | } | |
228 | lastch = ch; | |
229 | if (growing == 0) | |
230 | { | |
231 | display(tail, ' '); | |
232 | tail->next->prev = NULL; | |
233 | nh = tail->next; | |
234 | free(tail); | |
235 | tail = nh; | |
236 | } | |
237 | else growing--; | |
238 | display(head, BODY); | |
239 | wmove(tv, y, x); | |
240 | if (isdigit(ch = winch(tv))) | |
241 | { | |
242 | growing += ch-'0'; | |
243 | prize(); | |
244 | score += growing; | |
245 | running = 0; | |
246 | wmove(stw, 0, 68); | |
247 | wprintw(stw, "Score: %3d", score); | |
248 | wrefresh(stw); | |
249 | } | |
250 | else if(ch != ' ') crash(); | |
251 | nh = newlink(); | |
252 | nh->next = NULL; | |
253 | nh->prev = head; | |
254 | head->next = nh; | |
255 | nh->y = y; | |
256 | nh->x = x; | |
257 | display(nh, HEAD); | |
258 | head = nh; | |
259 | if (!(slow && running)) | |
260 | wrefresh(tv); | |
261 | if (!running) | |
262 | alarm(1); | |
263 | } | |
264 | ||
265 | crash() | |
266 | { | |
267 | sleep(2); | |
268 | clear(); | |
269 | move(23, 0); | |
270 | refresh(); | |
271 | printf("Well, you ran into something and the game is over.\n"); | |
272 | printf("Your final score was %d\n", score); | |
273 | leave(); | |
274 | } | |
275 | ||
276 | void | |
277 | suspend() | |
278 | { | |
279 | char *sh; | |
280 | ||
281 | move(LINES-1, 0); | |
282 | refresh(); | |
283 | endwin(); | |
284 | fflush(stdout); | |
285 | kill(getpid(), SIGTSTP); | |
286 | signal(SIGTSTP, suspend); | |
287 | crmode(); | |
288 | noecho(); | |
289 | setup(); | |
290 | } | |
291 | ||
292 | setup() | |
293 | { | |
294 | clear(); | |
295 | refresh(); | |
296 | touchwin(stw); | |
297 | wrefresh(stw); | |
298 | touchwin(tv); | |
299 | wrefresh(tv); | |
300 | alarm(1); | |
301 | } |