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e0bbfbf9 DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
7 | #ifndef lint | |
8 | char copyright[] = | |
9 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
10 | All rights reserved.\n"; | |
11 | #endif not lint | |
12 | ||
13 | #ifndef lint | |
95f51977 | 14 | static char sccsid[] = "@(#)worm.c 5.2 (Berkeley) 6/25/85"; |
e0bbfbf9 | 15 | #endif not lint |
c4e6edfa KM |
16 | |
17 | /* | |
18 | * Worm. Written by Michael Toy | |
19 | * UCSC | |
20 | */ | |
21 | ||
22 | #include <ctype.h> | |
23 | #include <curses.h> | |
24 | #include <signal.h> | |
25 | ||
26 | #define newlink() (struct body *) malloc(sizeof (struct body)); | |
27 | #define HEAD '@' | |
28 | #define BODY 'o' | |
29 | #define LENGTH 7 | |
30 | #define RUNLEN 8 | |
31 | #define when break;case | |
32 | #define otherwise break;default | |
33 | #define CNTRL(p) ('p'-'A'+1) | |
aba3284a | 34 | #ifndef baudrate |
73ead3d6 KA |
35 | # define baudrate() _tty.sg_ospeed |
36 | #endif | |
c4e6edfa KM |
37 | |
38 | WINDOW *tv; | |
39 | WINDOW *stw; | |
40 | struct body { | |
41 | int x; | |
42 | int y; | |
43 | struct body *prev; | |
44 | struct body *next; | |
45 | } *head, *tail, goody; | |
46 | int growing = 0; | |
47 | int running = 0; | |
73ead3d6 | 48 | int slow = 0; |
c4e6edfa KM |
49 | int score = 0; |
50 | int start_len = LENGTH; | |
51 | char lastch; | |
52 | char outbuf[BUFSIZ]; | |
53 | ||
54 | main(argc, argv) | |
55 | char **argv; | |
56 | { | |
57 | int leave(), wake(), suspend(); | |
58 | char ch; | |
59 | ||
60 | if (argc == 2) | |
61 | start_len = atoi(argv[1]); | |
62 | if ((start_len <= 0) || (start_len > 500)) | |
63 | start_len = LENGTH; | |
64 | setbuf(stdout, outbuf); | |
65 | srand(getpid()); | |
66 | signal(SIGALRM, wake); | |
67 | signal(SIGINT, leave); | |
68 | signal(SIGQUIT, leave); | |
69 | #ifdef SIGTSTP | |
70 | signal(SIGTSTP, suspend); /* process control signal */ | |
71 | #endif | |
72 | initscr(); | |
73 | crmode(); | |
74 | noecho(); | |
73ead3d6 | 75 | slow = (baudrate() <= B1200); |
c4e6edfa KM |
76 | clear(); |
77 | stw = newwin(1, COLS-1, 0, 0); | |
78 | tv = newwin(LINES-1, COLS-1, 1, 0); | |
79 | box(tv, '*', '*'); | |
80 | scrollok(tv, FALSE); | |
81 | scrollok(stw, FALSE); | |
82 | wmove(stw, 0, 0); | |
83 | wprintw(stw, " Worm"); | |
84 | refresh(); | |
85 | wrefresh(stw); | |
86 | wrefresh(tv); | |
87 | life(); /* Create the worm */ | |
88 | prize(); /* Put up a goal */ | |
89 | while(1) | |
90 | { | |
91 | if (running) | |
92 | { | |
93 | running--; | |
94 | process(lastch); | |
95 | } | |
96 | else | |
97 | { | |
98 | fflush(stdout); | |
99 | if (read(0, &ch, 1) >= 0) | |
100 | process(ch); | |
101 | } | |
102 | } | |
103 | } | |
104 | ||
105 | life() | |
106 | { | |
107 | register struct body *bp, *np; | |
108 | register int i; | |
109 | ||
110 | head = newlink(); | |
111 | head->x = start_len+2; | |
112 | head->y = 12; | |
113 | head->next = NULL; | |
114 | display(head, HEAD); | |
115 | for (i = 0, bp = head; i < start_len; i++, bp = np) { | |
116 | np = newlink(); | |
117 | np->next = bp; | |
118 | bp->prev = np; | |
119 | np->x = bp->x - 1; | |
120 | np->y = bp->y; | |
121 | display(np, BODY); | |
122 | } | |
123 | tail = np; | |
124 | tail->prev = NULL; | |
c4e6edfa KM |
125 | } |
126 | ||
127 | display(pos, chr) | |
128 | struct body *pos; | |
129 | char chr; | |
130 | { | |
131 | wmove(tv, pos->y, pos->x); | |
132 | waddch(tv, chr); | |
133 | } | |
134 | ||
135 | leave() | |
136 | { | |
137 | endwin(); | |
138 | exit(0); | |
139 | } | |
140 | ||
141 | wake() | |
142 | { | |
143 | signal(SIGALRM, wake); | |
144 | fflush(stdout); | |
145 | process(lastch); | |
146 | } | |
147 | ||
148 | rnd(range) | |
149 | { | |
150 | return abs((rand()>>5)+(rand()>>5)) % range; | |
151 | } | |
152 | ||
153 | newpos(bp) | |
154 | struct body * bp; | |
155 | { | |
156 | do { | |
157 | bp->y = rnd(LINES-3)+ 2; | |
158 | bp->x = rnd(COLS-3) + 1; | |
159 | wmove(tv, bp->y, bp->x); | |
160 | } while(winch(tv) != ' '); | |
161 | } | |
162 | ||
163 | prize() | |
164 | { | |
165 | int value; | |
166 | ||
167 | value = rnd(9) + 1; | |
168 | newpos(&goody); | |
169 | waddch(tv, value+'0'); | |
170 | wrefresh(tv); | |
171 | } | |
172 | ||
173 | process(ch) | |
174 | char ch; | |
175 | { | |
176 | register int x,y; | |
177 | struct body *nh; | |
178 | ||
179 | alarm(0); | |
180 | x = head->x; | |
181 | y = head->y; | |
182 | switch(ch) | |
183 | { | |
184 | when 'h': x--; | |
185 | when 'j': y++; | |
186 | when 'k': y--; | |
187 | when 'l': x++; | |
188 | when 'H': x--; running = RUNLEN; ch = tolower(ch); | |
189 | when 'J': y++; running = RUNLEN/2; ch = tolower(ch); | |
190 | when 'K': y--; running = RUNLEN/2; ch = tolower(ch); | |
191 | when 'L': x++; running = RUNLEN; ch = tolower(ch); | |
192 | when '\f': setup(); return; | |
193 | when CNTRL(Z): suspend(); return; | |
194 | when CNTRL(C): crash(); return; | |
195 | when CNTRL(D): crash(); return; | |
196 | otherwise: if (! running) alarm(1); | |
197 | return; | |
198 | } | |
199 | lastch = ch; | |
200 | if (growing == 0) | |
201 | { | |
202 | display(tail, ' '); | |
203 | tail->next->prev = NULL; | |
204 | nh = tail->next; | |
205 | free(tail); | |
206 | tail = nh; | |
207 | } | |
208 | else growing--; | |
209 | display(head, BODY); | |
210 | wmove(tv, y, x); | |
211 | if (isdigit(ch = winch(tv))) | |
212 | { | |
213 | growing += ch-'0'; | |
214 | prize(); | |
215 | score += growing; | |
216 | running = 0; | |
217 | wmove(stw, 0, 68); | |
218 | wprintw(stw, "Score: %3d", score); | |
219 | wrefresh(stw); | |
220 | } | |
221 | else if(ch != ' ') crash(); | |
222 | nh = newlink(); | |
223 | nh->next = NULL; | |
224 | nh->prev = head; | |
225 | head->next = nh; | |
226 | nh->y = y; | |
227 | nh->x = x; | |
228 | display(nh, HEAD); | |
229 | head = nh; | |
73ead3d6 KA |
230 | if (!(slow && running)) |
231 | wrefresh(tv); | |
232 | if (!running) | |
233 | alarm(1); | |
c4e6edfa KM |
234 | } |
235 | ||
236 | crash() | |
237 | { | |
238 | sleep(2); | |
239 | clear(); | |
240 | move(23, 0); | |
241 | refresh(); | |
242 | printf("Well you ran into something and the game is over.\n"); | |
243 | printf("Your final score was %d\n", score); | |
244 | leave(); | |
245 | } | |
246 | ||
247 | suspend() | |
248 | { | |
249 | char *sh; | |
250 | ||
251 | move(LINES-1, 0); | |
252 | refresh(); | |
253 | endwin(); | |
254 | fflush(stdout); | |
255 | #ifdef SIGTSTP | |
256 | kill(getpid(), SIGTSTP); | |
257 | signal(SIGTSTP, suspend); | |
258 | #else | |
259 | sh = getenv("SHELL"); | |
260 | if (sh == NULL) | |
261 | sh = "/bin/sh"; | |
262 | system(sh); | |
263 | #endif | |
264 | crmode(); | |
265 | noecho(); | |
266 | setup(); | |
267 | } | |
268 | ||
269 | setup() | |
270 | { | |
271 | clear(); | |
272 | refresh(); | |
273 | touchwin(stw); | |
274 | wrefresh(stw); | |
275 | touchwin(tv); | |
276 | wrefresh(tv); | |
277 | alarm(1); | |
278 | } |