answer.c revision 1.9.14.1
1 /* $NetBSD: answer.c,v 1.9.14.1 2009/06/28 19:53:30 snj Exp $ */ 2 /* 3 * Copyright (c) 1983-2003, Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: 9 * 10 * + Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * + 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 * + Neither the name of the University of California, San Francisco nor 16 * the names of its contributors may be used to endorse or promote 17 * products derived from this software without specific prior written 18 * permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 21 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 23 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 #ifndef lint 35 __RCSID("$NetBSD: answer.c,v 1.9.14.1 2009/06/28 19:53:30 snj Exp $"); 36 #endif /* not lint */ 37 38 # include <ctype.h> 39 # include <errno.h> 40 # include <fcntl.h> 41 # include <stdlib.h> 42 # include <unistd.h> 43 # include "hunt.h" 44 45 # define SCOREDECAY 15 46 47 static char Ttyname[NAMELEN]; 48 49 int 50 answer() 51 { 52 PLAYER *pp; 53 int newsock; 54 static u_long mode; 55 static char name[NAMELEN]; 56 static char team; 57 static int enter_status; 58 static socklen_t socklen; 59 static uint32_t machine; 60 static uint32_t uid; 61 static SOCKET sockstruct; 62 char *cp1, *cp2; 63 int flags; 64 u_int32_t version; 65 int i; 66 67 # ifdef INTERNET 68 socklen = sizeof sockstruct; 69 # else 70 socklen = sizeof sockstruct - 1; 71 # endif 72 errno = 0; 73 newsock = accept(Socket, (struct sockaddr *) &sockstruct, &socklen); 74 if (newsock < 0) 75 { 76 if (errno == EINTR) 77 return FALSE; 78 # ifdef LOG 79 syslog(LOG_ERR, "accept: %m"); 80 # else 81 perror("accept"); 82 # endif 83 cleanup(1); 84 } 85 86 # ifdef INTERNET 87 machine = ntohl(((struct sockaddr_in *) &sockstruct)->sin_addr.s_addr); 88 # else 89 if (machine == 0) 90 machine = gethostid(); 91 # endif 92 version = htonl((u_int32_t) HUNT_VERSION); 93 (void) write(newsock, (char *) &version, LONGLEN); 94 (void) read(newsock, (char *) &uid, LONGLEN); 95 uid = ntohl(uid); 96 (void) read(newsock, name, NAMELEN); 97 (void) read(newsock, &team, 1); 98 (void) read(newsock, (char *) &enter_status, LONGLEN); 99 enter_status = ntohl((unsigned long) enter_status); 100 (void) read(newsock, Ttyname, NAMELEN); 101 (void) read(newsock, (char *) &mode, sizeof mode); 102 mode = ntohl(mode); 103 104 /* 105 * Ensure null termination. 106 */ 107 name[sizeof(name)-1] = '\0'; 108 Ttyname[sizeof(Ttyname)-1] = '\0'; 109 110 /* 111 * Turn off blocking I/O, so a slow or dead terminal won't stop 112 * the game. All subsequent reads check how many bytes they read. 113 */ 114 flags = fcntl(newsock, F_GETFL, 0); 115 flags |= O_NDELAY; 116 (void) fcntl(newsock, F_SETFL, flags); 117 118 /* 119 * Make sure the name contains only printable characters 120 * since we use control characters for cursor control 121 * between driver and player processes 122 */ 123 for (cp1 = cp2 = name; *cp1 != '\0'; cp1++) 124 if (isprint((unsigned char)*cp1) || *cp1 == ' ') 125 *cp2++ = *cp1; 126 *cp2 = '\0'; 127 128 # ifdef INTERNET 129 if (mode == C_MESSAGE) { 130 char buf[BUFSIZ + 1]; 131 int n; 132 133 if (team == ' ') 134 (void) sprintf(buf, "%s: ", name); 135 else 136 (void) sprintf(buf, "%s[%c]: ", name, team); 137 n = strlen(buf); 138 for (pp = Player; pp < End_player; pp++) { 139 cgoto(pp, HEIGHT, 0); 140 outstr(pp, buf, n); 141 } 142 while ((n = read(newsock, buf, BUFSIZ)) > 0) 143 for (pp = Player; pp < End_player; pp++) 144 outstr(pp, buf, n); 145 for (pp = Player; pp < End_player; pp++) { 146 ce(pp); 147 sendcom(pp, REFRESH); 148 sendcom(pp, READY, 0); 149 (void) fflush(pp->p_output); 150 } 151 (void) close(newsock); 152 return FALSE; 153 } 154 else 155 # endif 156 # ifdef MONITOR 157 if (mode == C_MONITOR) 158 if (End_monitor < &Monitor[MAXMON]) { 159 pp = End_monitor++; 160 i = pp - Monitor + MAXPL + 3; 161 } else { 162 socklen = 0; 163 (void) write(newsock, (char *) &socklen, 164 sizeof socklen); 165 (void) close(newsock); 166 return FALSE; 167 } 168 else 169 # endif 170 if (End_player < &Player[MAXPL]) { 171 pp = End_player++; 172 i = pp - Player + 3; 173 } else { 174 socklen = 0; 175 (void) write(newsock, (char *) &socklen, 176 sizeof socklen); 177 (void) close(newsock); 178 return FALSE; 179 } 180 181 #ifdef MONITOR 182 if (mode == C_MONITOR && team == ' ') 183 team = '*'; 184 #endif 185 pp->p_ident = get_ident(machine, uid, name, team); 186 pp->p_output = fdopen(newsock, "w"); 187 pp->p_death[0] = '\0'; 188 pp->p_fd = newsock; 189 fdset[i].fd = newsock; 190 fdset[i].events = POLLIN; 191 192 pp->p_y = 0; 193 pp->p_x = 0; 194 195 # ifdef MONITOR 196 if (mode == C_MONITOR) 197 stmonitor(pp); 198 else 199 # endif 200 stplayer(pp, enter_status); 201 return TRUE; 202 } 203 204 # ifdef MONITOR 205 void 206 stmonitor(pp) 207 PLAYER *pp; 208 { 209 int line; 210 PLAYER *npp; 211 212 memcpy(pp->p_maze, Maze, sizeof Maze); 213 214 drawmaze(pp); 215 216 (void) sprintf(Buf, "%5.5s%c%-10.10s %c", " ", stat_char(pp), 217 pp->p_ident->i_name, pp->p_ident->i_team); 218 line = STAT_MON_ROW + 1 + (pp - Monitor); 219 for (npp = Player; npp < End_player; npp++) { 220 cgoto(npp, line, STAT_NAME_COL); 221 outstr(npp, Buf, STAT_NAME_LEN); 222 } 223 for (npp = Monitor; npp < End_monitor; npp++) { 224 cgoto(npp, line, STAT_NAME_COL); 225 outstr(npp, Buf, STAT_NAME_LEN); 226 } 227 228 sendcom(pp, REFRESH); 229 sendcom(pp, READY, 0); 230 (void) fflush(pp->p_output); 231 } 232 # endif 233 234 void 235 stplayer(newpp, enter_status) 236 PLAYER *newpp; 237 int enter_status; 238 { 239 int x, y; 240 PLAYER *pp; 241 242 Nplayer++; 243 244 for (y = 0; y < UBOUND; y++) 245 for (x = 0; x < WIDTH; x++) 246 newpp->p_maze[y][x] = Maze[y][x]; 247 for ( ; y < DBOUND; y++) { 248 for (x = 0; x < LBOUND; x++) 249 newpp->p_maze[y][x] = Maze[y][x]; 250 for ( ; x < RBOUND; x++) 251 newpp->p_maze[y][x] = SPACE; 252 for ( ; x < WIDTH; x++) 253 newpp->p_maze[y][x] = Maze[y][x]; 254 } 255 for ( ; y < HEIGHT; y++) 256 for (x = 0; x < WIDTH; x++) 257 newpp->p_maze[y][x] = Maze[y][x]; 258 259 do { 260 x = rand_num(WIDTH - 1) + 1; 261 y = rand_num(HEIGHT - 1) + 1; 262 } while (Maze[y][x] != SPACE); 263 newpp->p_over = SPACE; 264 newpp->p_x = x; 265 newpp->p_y = y; 266 newpp->p_undershot = FALSE; 267 268 # ifdef FLY 269 if (enter_status == Q_FLY) { 270 newpp->p_flying = rand_num(20); 271 newpp->p_flyx = 2 * rand_num(6) - 5; 272 newpp->p_flyy = 2 * rand_num(6) - 5; 273 newpp->p_face = FLYER; 274 } 275 else 276 # endif 277 { 278 newpp->p_flying = -1; 279 newpp->p_face = rand_dir(); 280 } 281 newpp->p_damage = 0; 282 newpp->p_damcap = MAXDAM; 283 newpp->p_nchar = 0; 284 newpp->p_ncount = 0; 285 newpp->p_nexec = 0; 286 newpp->p_ammo = ISHOTS; 287 # ifdef BOOTS 288 newpp->p_nboots = 0; 289 # endif 290 if (enter_status == Q_SCAN) { 291 newpp->p_scan = SCANLEN; 292 newpp->p_cloak = 0; 293 } 294 else { 295 newpp->p_scan = 0; 296 newpp->p_cloak = CLOAKLEN; 297 } 298 newpp->p_ncshot = 0; 299 300 do { 301 x = rand_num(WIDTH - 1) + 1; 302 y = rand_num(HEIGHT - 1) + 1; 303 } while (Maze[y][x] != SPACE); 304 Maze[y][x] = GMINE; 305 # ifdef MONITOR 306 for (pp = Monitor; pp < End_monitor; pp++) 307 check(pp, y, x); 308 # endif 309 310 do { 311 x = rand_num(WIDTH - 1) + 1; 312 y = rand_num(HEIGHT - 1) + 1; 313 } while (Maze[y][x] != SPACE); 314 Maze[y][x] = MINE; 315 # ifdef MONITOR 316 for (pp = Monitor; pp < End_monitor; pp++) 317 check(pp, y, x); 318 # endif 319 320 (void) sprintf(Buf, "%5.2f%c%-10.10s %c", newpp->p_ident->i_score, 321 stat_char(newpp), newpp->p_ident->i_name, 322 newpp->p_ident->i_team); 323 y = STAT_PLAY_ROW + 1 + (newpp - Player); 324 for (pp = Player; pp < End_player; pp++) { 325 if (pp != newpp) { 326 char smallbuf[16]; 327 328 pp->p_ammo += NSHOTS; 329 newpp->p_ammo += NSHOTS; 330 cgoto(pp, y, STAT_NAME_COL); 331 outstr(pp, Buf, STAT_NAME_LEN); 332 (void) sprintf(smallbuf, "%3d", pp->p_ammo); 333 cgoto(pp, STAT_AMMO_ROW, STAT_VALUE_COL); 334 outstr(pp, smallbuf, 3); 335 } 336 } 337 # ifdef MONITOR 338 for (pp = Monitor; pp < End_monitor; pp++) { 339 cgoto(pp, y, STAT_NAME_COL); 340 outstr(pp, Buf, STAT_NAME_LEN); 341 } 342 # endif 343 344 drawmaze(newpp); 345 drawplayer(newpp, TRUE); 346 look(newpp); 347 # ifdef FLY 348 if (enter_status == Q_FLY) 349 /* Make sure that the position you enter in will be erased */ 350 showexpl(newpp->p_y, newpp->p_x, FLYER); 351 # endif 352 sendcom(newpp, REFRESH); 353 sendcom(newpp, READY, 0); 354 (void) fflush(newpp->p_output); 355 } 356 357 /* 358 * rand_dir: 359 * Return a random direction 360 */ 361 int 362 rand_dir() 363 { 364 switch (rand_num(4)) { 365 case 0: 366 return LEFTS; 367 case 1: 368 return RIGHT; 369 case 2: 370 return BELOW; 371 case 3: 372 return ABOVE; 373 } 374 /* NOTREACHED */ 375 return(-1); 376 } 377 378 /* 379 * get_ident: 380 * Get the score structure of a player 381 */ 382 IDENT * 383 get_ident(machine, uid, name, team) 384 uint32_t machine; 385 uint32_t uid; 386 char *name; 387 char team; 388 { 389 IDENT *ip; 390 static IDENT punt; 391 392 for (ip = Scores; ip != NULL; ip = ip->i_next) 393 if (ip->i_machine == machine 394 && ip->i_uid == uid 395 && ip->i_team == team 396 && strncmp(ip->i_name, name, NAMELEN) == 0) 397 break; 398 399 if (ip != NULL) { 400 if (ip->i_entries < SCOREDECAY) 401 ip->i_entries++; 402 else 403 ip->i_kills = (ip->i_kills * (SCOREDECAY - 1)) 404 / SCOREDECAY; 405 ip->i_score = ip->i_kills / (double) ip->i_entries; 406 } 407 else { 408 ip = (IDENT *) malloc(sizeof (IDENT)); 409 if (ip == NULL) { 410 /* Fourth down, time to punt */ 411 ip = &punt; 412 } 413 ip->i_machine = machine; 414 ip->i_team = team; 415 ip->i_uid = uid; 416 strncpy(ip->i_name, name, NAMELEN); 417 ip->i_kills = 0; 418 ip->i_entries = 1; 419 ip->i_score = 0; 420 ip->i_absorbed = 0; 421 ip->i_faced = 0; 422 ip->i_shot = 0; 423 ip->i_robbed = 0; 424 ip->i_slime = 0; 425 ip->i_missed = 0; 426 ip->i_ducked = 0; 427 ip->i_gkills = ip->i_bkills = ip->i_deaths = 0; 428 ip->i_stillb = ip->i_saved = 0; 429 ip->i_next = Scores; 430 Scores = ip; 431 } 432 433 return ip; 434 } 435
Indexes created Sun Oct 19 02:09:48 GMT 2025