worm.c revision 1.7
1 /* $NetBSD: worm.c,v 1.7 1995/04/29 01:12:41 mycroft Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 static char copyright[] = 38 "@(#) Copyright (c) 1980, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)worm.c 8.1 (Berkeley) 5/31/93"; 45 #else 46 static char rcsid[] = "$NetBSD: worm.c,v 1.7 1995/04/29 01:12:41 mycroft Exp $"; 47 #endif 48 #endif /* not lint */ 49 50 /* 51 * Worm. Written by Michael Toy 52 * UCSC 53 */ 54 55 #include <ctype.h> 56 #include <curses.h> 57 #include <signal.h> 58 #include <stdlib.h> 59 #include <termios.h> 60 61 #define newlink() (struct body *) malloc(sizeof (struct body)); 62 #define HEAD '@' 63 #define BODY 'o' 64 #define LENGTH 7 65 #define RUNLEN 8 66 #define CNTRL(p) (p-'A'+1) 67 68 WINDOW *tv; 69 WINDOW *stw; 70 struct body { 71 int x; 72 int y; 73 struct body *prev; 74 struct body *next; 75 } *head, *tail, goody; 76 int growing = 0; 77 int running = 0; 78 int slow = 0; 79 int score = 0; 80 int start_len = LENGTH; 81 char lastch; 82 char outbuf[BUFSIZ]; 83 84 void leave(), wake(), suspend(); 85 86 main(argc, argv) 87 int argc; 88 char **argv; 89 { 90 char ch; 91 92 if (argc == 2) 93 start_len = atoi(argv[1]); 94 if ((start_len <= 0) || (start_len > 500)) 95 start_len = LENGTH; 96 setbuf(stdout, outbuf); 97 srand(getpid()); 98 signal(SIGALRM, wake); 99 signal(SIGINT, leave); 100 signal(SIGQUIT, leave); 101 signal(SIGTSTP, suspend); /* process control signal */ 102 initscr(); 103 crmode(); 104 noecho(); 105 slow = (baudrate() <= 1200); 106 clear(); 107 stw = newwin(1, COLS-1, 0, 0); 108 tv = newwin(LINES-1, COLS-1, 1, 0); 109 box(tv, '*', '*'); 110 scrollok(tv, FALSE); 111 scrollok(stw, FALSE); 112 wmove(stw, 0, 0); 113 wprintw(stw, " Worm"); 114 refresh(); 115 wrefresh(stw); 116 wrefresh(tv); 117 life(); /* Create the worm */ 118 prize(); /* Put up a goal */ 119 while(1) 120 { 121 if (running) 122 { 123 running--; 124 process(lastch); 125 } 126 else 127 { 128 fflush(stdout); 129 if (read(0, &ch, 1) >= 0) 130 process(ch); 131 } 132 } 133 } 134 135 life() 136 { 137 register struct body *bp, *np; 138 register int i; 139 140 head = newlink(); 141 head->x = start_len+2; 142 head->y = 12; 143 head->next = NULL; 144 display(head, HEAD); 145 for (i = 0, bp = head; i < start_len; i++, bp = np) { 146 np = newlink(); 147 np->next = bp; 148 bp->prev = np; 149 np->x = bp->x - 1; 150 np->y = bp->y; 151 display(np, BODY); 152 } 153 tail = np; 154 tail->prev = NULL; 155 } 156 157 display(pos, chr) 158 struct body *pos; 159 char chr; 160 { 161 wmove(tv, pos->y, pos->x); 162 waddch(tv, chr); 163 } 164 165 void 166 leave() 167 { 168 endwin(); 169 exit(0); 170 } 171 172 void 173 wake() 174 { 175 signal(SIGALRM, wake); 176 fflush(stdout); 177 process(lastch); 178 } 179 180 rnd(range) 181 { 182 return abs((rand()>>5)+(rand()>>5)) % range; 183 } 184 185 newpos(bp) 186 struct body * bp; 187 { 188 do { 189 bp->y = rnd(LINES-3)+ 2; 190 bp->x = rnd(COLS-3) + 1; 191 wmove(tv, bp->y, bp->x); 192 } while(winch(tv) != ' '); 193 } 194 195 prize() 196 { 197 int value; 198 199 value = rnd(9) + 1; 200 newpos(&goody); 201 waddch(tv, value+'0'); 202 wrefresh(tv); 203 } 204 205 process(ch) 206 char ch; 207 { 208 register int x,y; 209 struct body *nh; 210 211 alarm(0); 212 x = head->x; 213 y = head->y; 214 switch(ch) 215 { 216 case 'h': x--; break; 217 case 'j': y++; break; 218 case 'k': y--; break; 219 case 'l': x++; break; 220 case 'H': x--; running = RUNLEN; ch = tolower(ch); break; 221 case 'J': y++; running = RUNLEN/2; ch = tolower(ch); break; 222 case 'K': y--; running = RUNLEN/2; ch = tolower(ch); break; 223 case 'L': x++; running = RUNLEN; ch = tolower(ch); break; 224 case '\f': setup(); return; 225 case CNTRL('Z'): suspend(); return; 226 case CNTRL('C'): crash(); return; 227 case CNTRL('D'): crash(); return; 228 default: if (! running) alarm(1); 229 return; 230 } 231 lastch = ch; 232 if (growing == 0) 233 { 234 display(tail, ' '); 235 tail->next->prev = NULL; 236 nh = tail->next; 237 free(tail); 238 tail = nh; 239 } 240 else growing--; 241 display(head, BODY); 242 wmove(tv, y, x); 243 if (isdigit(ch = winch(tv))) 244 { 245 growing += ch-'0'; 246 prize(); 247 score += growing; 248 running = 0; 249 wmove(stw, 0, 68); 250 wprintw(stw, "Score: %3d", score); 251 wrefresh(stw); 252 } 253 else if(ch != ' ') crash(); 254 nh = newlink(); 255 nh->next = NULL; 256 nh->prev = head; 257 head->next = nh; 258 nh->y = y; 259 nh->x = x; 260 display(nh, HEAD); 261 head = nh; 262 if (!(slow && running)) 263 wrefresh(tv); 264 if (!running) 265 alarm(1); 266 } 267 268 crash() 269 { 270 sleep(2); 271 clear(); 272 move(23, 0); 273 refresh(); 274 printf("Well, you ran into something and the game is over.\n"); 275 printf("Your final score was %d\n", score); 276 leave(); 277 } 278 279 void 280 suspend() 281 { 282 char *sh; 283 284 move(LINES-1, 0); 285 refresh(); 286 endwin(); 287 fflush(stdout); 288 kill(getpid(), SIGTSTP); 289 signal(SIGTSTP, suspend); 290 crmode(); 291 noecho(); 292 setup(); 293 } 294 295 setup() 296 { 297 clear(); 298 refresh(); 299 touchwin(stw); 300 wrefresh(stw); 301 touchwin(tv); 302 wrefresh(tv); 303 alarm(1); 304 } 305
Indexes created Thu Oct 23 22:10:10 GMT 2025