Commit | Line | Data |
---|---|---|
c4e6edfa KM |
1 | |
2 | static char sccsid[] = " worm.c 4.1 82/10/24 "; | |
3 | ||
4 | /* | |
5 | * Worm. Written by Michael Toy | |
6 | * UCSC | |
7 | */ | |
8 | ||
9 | #include <ctype.h> | |
10 | #include <curses.h> | |
11 | #include <signal.h> | |
12 | ||
13 | #define newlink() (struct body *) malloc(sizeof (struct body)); | |
14 | #define HEAD '@' | |
15 | #define BODY 'o' | |
16 | #define LENGTH 7 | |
17 | #define RUNLEN 8 | |
18 | #define when break;case | |
19 | #define otherwise break;default | |
20 | #define CNTRL(p) ('p'-'A'+1) | |
21 | ||
22 | WINDOW *tv; | |
23 | WINDOW *stw; | |
24 | struct body { | |
25 | int x; | |
26 | int y; | |
27 | struct body *prev; | |
28 | struct body *next; | |
29 | } *head, *tail, goody; | |
30 | int growing = 0; | |
31 | int running = 0; | |
32 | int score = 0; | |
33 | int start_len = LENGTH; | |
34 | char lastch; | |
35 | char outbuf[BUFSIZ]; | |
36 | ||
37 | main(argc, argv) | |
38 | char **argv; | |
39 | { | |
40 | int leave(), wake(), suspend(); | |
41 | char ch; | |
42 | ||
43 | if (argc == 2) | |
44 | start_len = atoi(argv[1]); | |
45 | if ((start_len <= 0) || (start_len > 500)) | |
46 | start_len = LENGTH; | |
47 | setbuf(stdout, outbuf); | |
48 | srand(getpid()); | |
49 | signal(SIGALRM, wake); | |
50 | signal(SIGINT, leave); | |
51 | signal(SIGQUIT, leave); | |
52 | #ifdef SIGTSTP | |
53 | signal(SIGTSTP, suspend); /* process control signal */ | |
54 | #endif | |
55 | initscr(); | |
56 | crmode(); | |
57 | noecho(); | |
58 | clear(); | |
59 | stw = newwin(1, COLS-1, 0, 0); | |
60 | tv = newwin(LINES-1, COLS-1, 1, 0); | |
61 | box(tv, '*', '*'); | |
62 | scrollok(tv, FALSE); | |
63 | scrollok(stw, FALSE); | |
64 | wmove(stw, 0, 0); | |
65 | wprintw(stw, " Worm"); | |
66 | refresh(); | |
67 | wrefresh(stw); | |
68 | wrefresh(tv); | |
69 | life(); /* Create the worm */ | |
70 | prize(); /* Put up a goal */ | |
71 | while(1) | |
72 | { | |
73 | if (running) | |
74 | { | |
75 | running--; | |
76 | process(lastch); | |
77 | } | |
78 | else | |
79 | { | |
80 | fflush(stdout); | |
81 | if (read(0, &ch, 1) >= 0) | |
82 | process(ch); | |
83 | } | |
84 | } | |
85 | } | |
86 | ||
87 | life() | |
88 | { | |
89 | register struct body *bp, *np; | |
90 | register int i; | |
91 | ||
92 | head = newlink(); | |
93 | head->x = start_len+2; | |
94 | head->y = 12; | |
95 | head->next = NULL; | |
96 | display(head, HEAD); | |
97 | for (i = 0, bp = head; i < start_len; i++, bp = np) { | |
98 | np = newlink(); | |
99 | np->next = bp; | |
100 | bp->prev = np; | |
101 | np->x = bp->x - 1; | |
102 | np->y = bp->y; | |
103 | display(np, BODY); | |
104 | } | |
105 | tail = np; | |
106 | tail->prev = NULL; | |
107 | wrefresh(tv); | |
108 | } | |
109 | ||
110 | display(pos, chr) | |
111 | struct body *pos; | |
112 | char chr; | |
113 | { | |
114 | wmove(tv, pos->y, pos->x); | |
115 | waddch(tv, chr); | |
116 | } | |
117 | ||
118 | leave() | |
119 | { | |
120 | endwin(); | |
121 | exit(0); | |
122 | } | |
123 | ||
124 | wake() | |
125 | { | |
126 | signal(SIGALRM, wake); | |
127 | fflush(stdout); | |
128 | process(lastch); | |
129 | } | |
130 | ||
131 | rnd(range) | |
132 | { | |
133 | return abs((rand()>>5)+(rand()>>5)) % range; | |
134 | } | |
135 | ||
136 | newpos(bp) | |
137 | struct body * bp; | |
138 | { | |
139 | do { | |
140 | bp->y = rnd(LINES-3)+ 2; | |
141 | bp->x = rnd(COLS-3) + 1; | |
142 | wmove(tv, bp->y, bp->x); | |
143 | } while(winch(tv) != ' '); | |
144 | } | |
145 | ||
146 | prize() | |
147 | { | |
148 | int value; | |
149 | ||
150 | value = rnd(9) + 1; | |
151 | newpos(&goody); | |
152 | waddch(tv, value+'0'); | |
153 | wrefresh(tv); | |
154 | } | |
155 | ||
156 | process(ch) | |
157 | char ch; | |
158 | { | |
159 | register int x,y; | |
160 | struct body *nh; | |
161 | ||
162 | alarm(0); | |
163 | x = head->x; | |
164 | y = head->y; | |
165 | switch(ch) | |
166 | { | |
167 | when 'h': x--; | |
168 | when 'j': y++; | |
169 | when 'k': y--; | |
170 | when 'l': x++; | |
171 | when 'H': x--; running = RUNLEN; ch = tolower(ch); | |
172 | when 'J': y++; running = RUNLEN/2; ch = tolower(ch); | |
173 | when 'K': y--; running = RUNLEN/2; ch = tolower(ch); | |
174 | when 'L': x++; running = RUNLEN; ch = tolower(ch); | |
175 | when '\f': setup(); return; | |
176 | when CNTRL(Z): suspend(); return; | |
177 | when CNTRL(C): crash(); return; | |
178 | when CNTRL(D): crash(); return; | |
179 | otherwise: if (! running) alarm(1); | |
180 | return; | |
181 | } | |
182 | lastch = ch; | |
183 | if (growing == 0) | |
184 | { | |
185 | display(tail, ' '); | |
186 | tail->next->prev = NULL; | |
187 | nh = tail->next; | |
188 | free(tail); | |
189 | tail = nh; | |
190 | } | |
191 | else growing--; | |
192 | display(head, BODY); | |
193 | wmove(tv, y, x); | |
194 | if (isdigit(ch = winch(tv))) | |
195 | { | |
196 | growing += ch-'0'; | |
197 | prize(); | |
198 | score += growing; | |
199 | running = 0; | |
200 | wmove(stw, 0, 68); | |
201 | wprintw(stw, "Score: %3d", score); | |
202 | wrefresh(stw); | |
203 | } | |
204 | else if(ch != ' ') crash(); | |
205 | nh = newlink(); | |
206 | nh->next = NULL; | |
207 | nh->prev = head; | |
208 | head->next = nh; | |
209 | nh->y = y; | |
210 | nh->x = x; | |
211 | display(nh, HEAD); | |
212 | head = nh; | |
213 | wrefresh(tv); | |
214 | if (! running) alarm(1); | |
215 | } | |
216 | ||
217 | crash() | |
218 | { | |
219 | sleep(2); | |
220 | clear(); | |
221 | move(23, 0); | |
222 | refresh(); | |
223 | printf("Well you ran into something and the game is over.\n"); | |
224 | printf("Your final score was %d\n", score); | |
225 | leave(); | |
226 | } | |
227 | ||
228 | suspend() | |
229 | { | |
230 | char *sh; | |
231 | ||
232 | move(LINES-1, 0); | |
233 | refresh(); | |
234 | endwin(); | |
235 | fflush(stdout); | |
236 | #ifdef SIGTSTP | |
237 | kill(getpid(), SIGTSTP); | |
238 | signal(SIGTSTP, suspend); | |
239 | #else | |
240 | sh = getenv("SHELL"); | |
241 | if (sh == NULL) | |
242 | sh = "/bin/sh"; | |
243 | system(sh); | |
244 | #endif | |
245 | crmode(); | |
246 | noecho(); | |
247 | setup(); | |
248 | } | |
249 | ||
250 | setup() | |
251 | { | |
252 | clear(); | |
253 | refresh(); | |
254 | touchwin(stw); | |
255 | wrefresh(stw); | |
256 | touchwin(tv); | |
257 | wrefresh(tv); | |
258 | alarm(1); | |
259 | } |