games/robots/score.c

   1 /*      $NetBSD: score.c,v 1.22 2009/08/03 06:04:12 dholland 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. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 #if 0
  35 static char sccsid[] = "@(#)score.c     8.1 (Berkeley) 5/31/93";
  36 #else
  37 __RCSID("$NetBSD: score.c,v 1.22 2009/08/03 06:04:12 dholland Exp $");
  38 #endif
  39 #endif /* not lint */
  40
  41 #include <curses.h>
  42 #include <err.h>
  43 #include <fcntl.h>
  44 #include <pwd.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include <unistd.h>
  49 #include "robots.h"
  50 #include "pathnames.h"
  51
  52 const char *Scorefile = _PATH_SCORE;
  53
  54 int Max_per_uid = MAX_PER_UID;
  55
  56 static SCORE Top[MAXSCORES];
  57
  58 static uint32_t numscores, max_uid;
  59
  60 static int cmp_sc(const void *, const void *);
  61 static void set_name(SCORE *);
  62
  63 /*
  64  * read_score:
  65  *      Read the score file in MI format
  66  */
  67 static void
  68 read_score(int inf)
  69 {
  70         SCORE *scp;
  71
  72         if (read(inf, &max_uid, sizeof max_uid) == sizeof max_uid &&
  73             read(inf, Top, sizeof Top) == sizeof Top) {
  74                 max_uid = ntohl(max_uid);
  75                 for (scp = Top; scp < &Top[MAXSCORES]; scp++) {
  76                          scp->s_uid = ntohl(scp->s_uid);
  77                          scp->s_score = ntohl(scp->s_score);
  78                          scp->s_auto = ntohl(scp->s_auto);
  79                          scp->s_level = ntohl(scp->s_level);
  80                 }
  81         }
  82         else {
  83                 for (scp = Top; scp < &Top[MAXSCORES]; scp++)
  84                         scp->s_score = 0;
  85                 max_uid = Max_per_uid;
  86         }
  87 }
  88
  89 /*
  90  * write_score:
  91  *      Write the score file in MI format
  92  */
  93 static void
  94 write_score(int inf)
  95 {
  96         SCORE *scp;
  97
  98         lseek(inf, 0L, SEEK_SET);
  99
 100         max_uid = htonl(max_uid);
 101         write(inf, &max_uid, sizeof max_uid);
 102
 103         for (scp = Top; scp < &Top[MAXSCORES]; scp++) {
 104                  scp->s_uid = htonl(scp->s_uid);
 105                  scp->s_score = htonl(scp->s_score);
 106                  scp->s_auto = htonl(scp->s_auto);
 107                  scp->s_level = htonl(scp->s_level);
 108         }
 109
 110         write(inf, Top, sizeof Top);
 111 }
 112
 113
 114 /*
 115  * score:
 116  *      Post the player's score, if reasonable, and then print out the
 117  *      top list.
 118  */
 119 void
 120 score(int score_wfd)
 121 {
 122         int inf = score_wfd;
 123         SCORE *scp;
 124         uint32_t uid;
 125         bool done_show = false;
 126
 127         Newscore = false;
 128         if (inf < 0)
 129                 return;
 130
 131         read_score(inf);
 132
 133         uid = getuid();
 134         if (Top[MAXSCORES-1].s_score <= Score) {
 135                 numscores = 0;
 136                 for (scp = Top; scp < &Top[MAXSCORES]; scp++)
 137                         if ((scp->s_uid == uid && ++numscores == max_uid)) {
 138                                 if (scp->s_score > Score)
 139                                         break;
 140                                 scp->s_score = Score;
 141                                 scp->s_uid = uid;
 142                                 scp->s_auto = Auto_bot;
 143                                 scp->s_level = Level;
 144                                 set_name(scp);
 145                                 Newscore = true;
 146                                 break;
 147                         }
 148                 if (scp == &Top[MAXSCORES]) {
 149                         Top[MAXSCORES-1].s_score = Score;
 150                         Top[MAXSCORES-1].s_uid = uid;
 151                         Top[MAXSCORES-1].s_auto = Auto_bot;
 152                         Top[MAXSCORES-1].s_level = Level;
 153                         set_name(&Top[MAXSCORES-1]);
 154                         Newscore = true;
 155                 }
 156                 if (Newscore)
 157                         qsort(Top, MAXSCORES, sizeof Top[0], cmp_sc);
 158         }
 159
 160         if (!Newscore) {
 161                 Full_clear = false;
 162                 lseek(inf, 0, SEEK_SET);
 163                 return;
 164         }
 165         else
 166                 Full_clear = true;
 167
 168         move(1, 15);
 169         printw("%5.5s %5.5s %-9.9s %-8.8s %5.5s", "Rank", "Score", "User",
 170             " ", "Level");
 171
 172         for (scp = Top; scp < &Top[MAXSCORES]; scp++) {
 173                 if (scp->s_score == 0)
 174                         break;
 175                 move((scp - Top) + 2, 15);
 176                 if (!done_show && scp->s_uid == uid && scp->s_score == Score)
 177                         standout();
 178                 printw("%5ld %5d %-8.8s %-9.9s %5d",
 179                     (long)(scp - Top) + 1, scp->s_score, scp->s_name,
 180                     scp->s_auto ? "(autobot)" : "", scp->s_level);
 181                 if (!done_show && scp->s_uid == uid && scp->s_score == Score) {
 182                         standend();
 183                         done_show = true;
 184                 }
 185         }
 186         Num_scores = scp - Top;
 187         refresh();
 188
 189         if (Newscore) {
 190                 write_score(inf);
 191         }
 192         lseek(inf, 0, SEEK_SET);
 193 }
 194
 195 static void
 196 set_name(SCORE *scp)
 197 {
 198         struct passwd *pp;
 199
 200         if ((pp = getpwuid(scp->s_uid)) == NULL)
 201                 strncpy(scp->s_name, "???", MAXNAME);
 202         else
 203                 strncpy(scp->s_name, pp->pw_name, MAXNAME);
 204 }
 205
 206 /*
 207  * cmp_sc:
 208  *      Compare two scores.
 209  */
 210 static int
 211 cmp_sc(const void *s1, const void *s2)
 212 {
 213         return ((const SCORE *)s2)->s_score - ((const SCORE *)s1)->s_score;
 214 }
 215
 216 /*
 217  * show_score:
 218  *      Show the score list for the '-s' option.
 219  */
 220 void
 221 show_score(void)
 222 {
 223         SCORE *scp;
 224         int inf;
 225
 226         if ((inf = open(Scorefile, O_RDONLY)) < 0) {
 227                 warn("opening `%s'", Scorefile);
 228                 return;
 229         }
 230
 231         read_score(inf);
 232         close(inf);
 233         inf = 1;
 234         printf("%5.5s %5.5s %-9.9s %-8.8s %5.5s\n", "Rank", "Score", "User",
 235             " ", "Level");
 236         for (scp = Top; scp < &Top[MAXSCORES]; scp++)
 237                 if (scp->s_score > 0)
 238                         printf("%5d %5d %-8.8s %-9.9s %5d\n",
 239                             inf++, scp->s_score, scp->s_name,
 240                             scp->s_auto ? "(autobot)" :  "", scp->s_level);
 241 }