games/robots/score.c

   1 /*-
   2  * Copyright (c) 1980, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)score.c  8.1 (Berkeley) 5/31/93
  30  * $FreeBSD: src/games/robots/score.c,v 1.5 1999/11/30 03:49:20 billf Exp $
  31  * $DragonFly: src/games/robots/score.c,v 1.4 2008/08/23 23:23:37 swildner Exp $
  32  */
  33
  34 #include "robots.h"
  35 #include <fcntl.h>
  36 #include <sys/types.h>
  37 #include <pwd.h>
  38 #include "pathnames.h"
  39
  40 typedef struct {
  41         int     s_uid;
  42         int     s_score;
  43         char    s_name[MAXNAME];
  44 } SCORE;
  45
  46 const char *Scorefile = _PATH_SCORE;
  47
  48 int Max_per_uid = MAX_PER_UID;
  49
  50 static SCORE Top[MAXSCORES];
  51
  52 static int cmp_sc(const void *, const void *);
  53 static void set_name(SCORE *);
  54
  55 /*
  56  * score:
  57  *      Post the player's score, if reasonable, and then print out the
  58  *      top list.
  59  */
  60 void
  61 score(void)
  62 {
  63         int inf;
  64         SCORE *scp;
  65         int uid;
  66         bool done_show = false;
  67         static int numscores, max_uid;
  68
  69         Newscore = false;
  70         if ((inf = open(Scorefile, O_RDWR)) < 0) {
  71                 perror(Scorefile);
  72                 return;
  73         }
  74
  75         if (read(inf, &max_uid, sizeof max_uid) == sizeof max_uid)
  76                 read(inf, Top, sizeof Top);
  77         else {
  78                 for (scp = Top; scp < &Top[MAXSCORES]; scp++)
  79                         scp->s_score = -1;
  80                 max_uid = Max_per_uid;
  81         }
  82
  83         uid = getuid();
  84         if (Top[MAXSCORES-1].s_score <= Score) {
  85                 numscores = 0;
  86                 for (scp = Top; scp < &Top[MAXSCORES]; scp++)
  87                         if (scp->s_score < 0 ||
  88                             (scp->s_uid == uid && ++numscores == max_uid)) {
  89                                 if (scp->s_score > Score)
  90                                         break;
  91                                 scp->s_score = Score;
  92                                 scp->s_uid = uid;
  93                                 set_name(scp);
  94                                 Newscore = true;
  95                                 break;
  96                         }
  97                 if (scp == &Top[MAXSCORES]) {
  98                         Top[MAXSCORES-1].s_score = Score;
  99                         Top[MAXSCORES-1].s_uid = uid;
 100                         set_name(&Top[MAXSCORES-1]);
 101                         Newscore = true;
 102                 }
 103                 if (Newscore)
 104                         qsort(Top, MAXSCORES, sizeof Top[0], cmp_sc);
 105         }
 106
 107         if (!Newscore) {
 108                 Full_clear = false;
 109                 close(inf);
 110                 return;
 111         }
 112         else
 113                 Full_clear = true;
 114
 115         for (scp = Top; scp < &Top[MAXSCORES]; scp++) {
 116                 if (scp->s_score < 0)
 117                         break;
 118                 move((scp - Top) + 1, 15);
 119                 if (!done_show && scp->s_uid == uid && scp->s_score == Score)
 120                         standout();
 121                 printw(" %d\t%d\t%-8.8s ", (scp - Top) + 1, scp->s_score, scp->s_name);
 122                 if (!done_show && scp->s_uid == uid && scp->s_score == Score) {
 123                         standend();
 124                         done_show = true;
 125                 }
 126         }
 127         Num_scores = scp - Top;
 128         refresh();
 129
 130         if (Newscore) {
 131                 lseek(inf, 0L, SEEK_SET);
 132                 write(inf, &max_uid, sizeof max_uid);
 133                 write(inf, Top, sizeof Top);
 134         }
 135         close(inf);
 136 }
 137
 138 static void
 139 set_name(SCORE *scp)
 140 {
 141         struct passwd *pp;
 142
 143         if ((pp = getpwuid(scp->s_uid)) == NULL)
 144                 strncpy(scp->s_name, "???", MAXNAME);
 145         else
 146                 strncpy(scp->s_name, pp->pw_name, MAXNAME);
 147 }
 148
 149 /*
 150  * cmp_sc:
 151  *      Compare two scores.
 152  */
 153 static int
 154 cmp_sc(const void *s1, const void *s2)
 155 {
 156         return (((const SCORE *)s2)->s_score - ((const SCORE *)s1)->s_score);
 157 }
 158
 159 /*
 160  * show_score:
 161  *      Show the score list for the '-s' option.
 162  */
 163 void
 164 show_score(void)
 165 {
 166         SCORE *scp;
 167         int inf;
 168         static int max_score;
 169
 170         if ((inf = open(Scorefile, O_RDONLY)) < 0) {
 171                 perror(Scorefile);
 172                 return;
 173         }
 174
 175         for (scp = Top; scp < &Top[MAXSCORES]; scp++)
 176                 scp->s_score = -1;
 177
 178         read(inf, &max_score, sizeof max_score);
 179         read(inf, Top, sizeof Top);
 180         close(inf);
 181         inf = 1;
 182         for (scp = Top; scp < &Top[MAXSCORES]; scp++)
 183                 if (scp->s_score >= 0)
 184                         printf("%d\t%d\t%.*s\n", inf++, scp->s_score,
 185                             (int)sizeof(scp->s_name), scp->s_name);
 186 }