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e0bbfbf9 DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
c54d1a23 KB |
3 | * All rights reserved. |
4 | * | |
b2e7427f | 5 | * %sccs.include.redist.c% |
e0bbfbf9 DF |
6 | */ |
7 | ||
8 | #ifndef lint | |
9 | char copyright[] = | |
10 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
11 | All rights reserved.\n"; | |
c54d1a23 | 12 | #endif /* not lint */ |
e0bbfbf9 DF |
13 | |
14 | #ifndef lint | |
b2e7427f | 15 | static char sccsid[] = "@(#)worm.c 5.7 (Berkeley) %G%"; |
c54d1a23 | 16 | #endif /* not lint */ |
c4e6edfa KM |
17 | |
18 | /* | |
19 | * Worm. Written by Michael Toy | |
20 | * UCSC | |
21 | */ | |
22 | ||
23 | #include <ctype.h> | |
24 | #include <curses.h> | |
25 | #include <signal.h> | |
26 | ||
27 | #define newlink() (struct body *) malloc(sizeof (struct body)); | |
28 | #define HEAD '@' | |
29 | #define BODY 'o' | |
30 | #define LENGTH 7 | |
31 | #define RUNLEN 8 | |
32 | #define when break;case | |
33 | #define otherwise break;default | |
3831612d | 34 | #define CNTRL(p) (p-'A'+1) |
aba3284a | 35 | #ifndef baudrate |
73ead3d6 KA |
36 | # define baudrate() _tty.sg_ospeed |
37 | #endif | |
c4e6edfa KM |
38 | |
39 | WINDOW *tv; | |
40 | WINDOW *stw; | |
41 | struct body { | |
42 | int x; | |
43 | int y; | |
44 | struct body *prev; | |
45 | struct body *next; | |
46 | } *head, *tail, goody; | |
47 | int growing = 0; | |
48 | int running = 0; | |
73ead3d6 | 49 | int slow = 0; |
c4e6edfa KM |
50 | int score = 0; |
51 | int start_len = LENGTH; | |
52 | char lastch; | |
53 | char outbuf[BUFSIZ]; | |
54 | ||
55 | main(argc, argv) | |
56 | char **argv; | |
57 | { | |
58 | int leave(), wake(), suspend(); | |
59 | char ch; | |
60 | ||
61 | if (argc == 2) | |
62 | start_len = atoi(argv[1]); | |
63 | if ((start_len <= 0) || (start_len > 500)) | |
64 | start_len = LENGTH; | |
65 | setbuf(stdout, outbuf); | |
66 | srand(getpid()); | |
67 | signal(SIGALRM, wake); | |
68 | signal(SIGINT, leave); | |
69 | signal(SIGQUIT, leave); | |
c4e6edfa | 70 | signal(SIGTSTP, suspend); /* process control signal */ |
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71 | initscr(); |
72 | crmode(); | |
73 | noecho(); | |
73ead3d6 | 74 | slow = (baudrate() <= B1200); |
c4e6edfa KM |
75 | clear(); |
76 | stw = newwin(1, COLS-1, 0, 0); | |
77 | tv = newwin(LINES-1, COLS-1, 1, 0); | |
78 | box(tv, '*', '*'); | |
79 | scrollok(tv, FALSE); | |
80 | scrollok(stw, FALSE); | |
81 | wmove(stw, 0, 0); | |
82 | wprintw(stw, " Worm"); | |
83 | refresh(); | |
84 | wrefresh(stw); | |
85 | wrefresh(tv); | |
86 | life(); /* Create the worm */ | |
87 | prize(); /* Put up a goal */ | |
88 | while(1) | |
89 | { | |
90 | if (running) | |
91 | { | |
92 | running--; | |
93 | process(lastch); | |
94 | } | |
95 | else | |
96 | { | |
97 | fflush(stdout); | |
98 | if (read(0, &ch, 1) >= 0) | |
99 | process(ch); | |
100 | } | |
101 | } | |
102 | } | |
103 | ||
104 | life() | |
105 | { | |
106 | register struct body *bp, *np; | |
107 | register int i; | |
108 | ||
109 | head = newlink(); | |
110 | head->x = start_len+2; | |
111 | head->y = 12; | |
112 | head->next = NULL; | |
113 | display(head, HEAD); | |
114 | for (i = 0, bp = head; i < start_len; i++, bp = np) { | |
115 | np = newlink(); | |
116 | np->next = bp; | |
117 | bp->prev = np; | |
118 | np->x = bp->x - 1; | |
119 | np->y = bp->y; | |
120 | display(np, BODY); | |
121 | } | |
122 | tail = np; | |
123 | tail->prev = NULL; | |
c4e6edfa KM |
124 | } |
125 | ||
126 | display(pos, chr) | |
127 | struct body *pos; | |
128 | char chr; | |
129 | { | |
130 | wmove(tv, pos->y, pos->x); | |
131 | waddch(tv, chr); | |
132 | } | |
133 | ||
134 | leave() | |
135 | { | |
136 | endwin(); | |
137 | exit(0); | |
138 | } | |
139 | ||
140 | wake() | |
141 | { | |
142 | signal(SIGALRM, wake); | |
143 | fflush(stdout); | |
144 | process(lastch); | |
145 | } | |
146 | ||
147 | rnd(range) | |
148 | { | |
149 | return abs((rand()>>5)+(rand()>>5)) % range; | |
150 | } | |
151 | ||
152 | newpos(bp) | |
153 | struct body * bp; | |
154 | { | |
155 | do { | |
156 | bp->y = rnd(LINES-3)+ 2; | |
157 | bp->x = rnd(COLS-3) + 1; | |
158 | wmove(tv, bp->y, bp->x); | |
159 | } while(winch(tv) != ' '); | |
160 | } | |
161 | ||
162 | prize() | |
163 | { | |
164 | int value; | |
165 | ||
166 | value = rnd(9) + 1; | |
167 | newpos(&goody); | |
168 | waddch(tv, value+'0'); | |
169 | wrefresh(tv); | |
170 | } | |
171 | ||
172 | process(ch) | |
173 | char ch; | |
174 | { | |
175 | register int x,y; | |
176 | struct body *nh; | |
177 | ||
178 | alarm(0); | |
179 | x = head->x; | |
180 | y = head->y; | |
181 | switch(ch) | |
182 | { | |
183 | when 'h': x--; | |
184 | when 'j': y++; | |
185 | when 'k': y--; | |
186 | when 'l': x++; | |
187 | when 'H': x--; running = RUNLEN; ch = tolower(ch); | |
188 | when 'J': y++; running = RUNLEN/2; ch = tolower(ch); | |
189 | when 'K': y--; running = RUNLEN/2; ch = tolower(ch); | |
190 | when 'L': x++; running = RUNLEN; ch = tolower(ch); | |
191 | when '\f': setup(); return; | |
3831612d KB |
192 | when CNTRL('Z'): suspend(); return; |
193 | when CNTRL('C'): crash(); return; | |
194 | when CNTRL('D'): crash(); return; | |
c4e6edfa KM |
195 | otherwise: if (! running) alarm(1); |
196 | return; | |
197 | } | |
198 | lastch = ch; | |
199 | if (growing == 0) | |
200 | { | |
201 | display(tail, ' '); | |
202 | tail->next->prev = NULL; | |
203 | nh = tail->next; | |
204 | free(tail); | |
205 | tail = nh; | |
206 | } | |
207 | else growing--; | |
208 | display(head, BODY); | |
209 | wmove(tv, y, x); | |
210 | if (isdigit(ch = winch(tv))) | |
211 | { | |
212 | growing += ch-'0'; | |
213 | prize(); | |
214 | score += growing; | |
215 | running = 0; | |
216 | wmove(stw, 0, 68); | |
217 | wprintw(stw, "Score: %3d", score); | |
218 | wrefresh(stw); | |
219 | } | |
220 | else if(ch != ' ') crash(); | |
221 | nh = newlink(); | |
222 | nh->next = NULL; | |
223 | nh->prev = head; | |
224 | head->next = nh; | |
225 | nh->y = y; | |
226 | nh->x = x; | |
227 | display(nh, HEAD); | |
228 | head = nh; | |
73ead3d6 KA |
229 | if (!(slow && running)) |
230 | wrefresh(tv); | |
231 | if (!running) | |
232 | alarm(1); | |
c4e6edfa KM |
233 | } |
234 | ||
235 | crash() | |
236 | { | |
237 | sleep(2); | |
238 | clear(); | |
239 | move(23, 0); | |
240 | refresh(); | |
fd35ae3d | 241 | printf("Well, you ran into something and the game is over.\n"); |
c4e6edfa KM |
242 | printf("Your final score was %d\n", score); |
243 | leave(); | |
244 | } | |
245 | ||
246 | suspend() | |
247 | { | |
248 | char *sh; | |
249 | ||
250 | move(LINES-1, 0); | |
251 | refresh(); | |
252 | endwin(); | |
253 | fflush(stdout); | |
c4e6edfa KM |
254 | kill(getpid(), SIGTSTP); |
255 | signal(SIGTSTP, suspend); | |
c4e6edfa KM |
256 | crmode(); |
257 | noecho(); | |
258 | setup(); | |
259 | } | |
260 | ||
261 | setup() | |
262 | { | |
263 | clear(); | |
264 | refresh(); | |
265 | touchwin(stw); | |
266 | wrefresh(stw); | |
267 | touchwin(tv); | |
268 | wrefresh(tv); | |
269 | alarm(1); | |
270 | } |