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score.c
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score.c
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# include "robots.h"
/*
* score.c: All the scoring code is in here.
*/
struct scorefile {
int s_uid;
long s_score;
char s_name[MAXSTR];
bool s_eaten;
int s_level;
int s_days;
};
# define FILE_SIZE (NUMSCORES*sizeof(struct scorefile))
void scoring(bool eaten)
{
static char buf[MAXSTR];
(void) sprintf(buf,"for this %s",TEMP_NAME);
if( record_score(eaten,TMP_FILE,TEMP_DAYS,buf) || show_highscore) {
printf("[Press return to continue]");
fflush(stdout);
getchar();
}
record_score(eaten,HOF_FILE,0,"of All Time");
}
int record_score(bool eaten, char *fname, int max_days, char *type_str)
{
int value;
int fd;
/* block signals while recording the score
* hope this routine doesn't get stuck!
*/
sig_t oint, oterm, ohup, otstp;
oint = signal(SIGINT, SIG_IGN);
oterm = signal(SIGTERM, SIG_IGN);
ohup = signal(SIGHUP, SIG_IGN);
otstp = signal(SIGTSTP, SIG_IGN);
if((fd = lk_open(fname,2)) < 0) {
perror(fname);
value = FALSE;
} else {
value = do_score(eaten,fd,max_days,type_str);
lk_close(fd, fname);
}
(void) signal(SIGINT, oint);
(void) signal(SIGTERM, oterm);
(void) signal(SIGHUP, ohup);
(void) signal(SIGTSTP, otstp);
return value;
}
int do_score(bool eaten, int fd, int max_days, char *type_str)
{
register struct scorefile *position;
register int x;
register struct scorefile *remove, *sfile, *eof;
struct scorefile *oldest, *this;
int uid, this_day, limit;
ssize_t nread;
this_day = max_days ? time((time_t *)0)/SECSPERDAY : 0;
limit = this_day-max_days;
sfile = (struct scorefile *)(malloc(FILE_SIZE));
if( sfile == NULL)
{
fprintf( stderr, "Out of memmory so no scoring");
return FALSE;
}
eof = &sfile[NUMSCORES];
this = 0;
for(position = sfile; position < eof; position++) {
position->s_score = 0;
position->s_days = 0;
}
nread = read(fd, (char *)sfile, FILE_SIZE);
if (nread == -1) {
perror("Error: do_score: read");
return FALSE;
}
if (nread > 0 && nread != FILE_SIZE) {
fprintf(stderr, "Error: do_score: score file truncated (%zd != %zd)\n", nread, FILE_SIZE);
return FALSE;
}
remove = 0;
if(score > 0) {
uid = getuid();
oldest = 0;
x = limit;
for(position = eof-1; position >= sfile; position--) {
if(position->s_days < x) {
x = position->s_days;
oldest = position;
}
}
position = 0;
for(remove = sfile; remove < eof; remove++) {
if(position == 0 && score > remove->s_score) position = remove;
# ifndef ALLSCORES
if(remove->s_uid == uid) break;
# endif
}
if(remove < eof) {
if(position == 0 && remove->s_days < limit) position = remove;
} else if(oldest) {
remove = oldest;
if(position == 0) {
position = eof-1;
} else if(remove < position) {
position--;
}
} else if(position) {
remove = eof-1;
}
if(position) {
if(remove < position) {
while(remove < position) {
*remove = *(remove+1);
remove++;
}
} else {
while(remove > position) {
*remove = *(remove-1);
remove--;
}
}
position->s_score = score;
(void) strncpy(position->s_name,whoami,MAXSTR);
position->s_eaten = eaten;
position->s_level = LEVEL;
position->s_uid = uid;
position->s_days = this_day;
this = position;
if(lseek(fd,0L,0) == -1L ||
write(fd,(char *)sfile,FILE_SIZE) != FILE_SIZE)
perror("scorefile");
close(fd);
}
}
if( show_highscore || this )
{
printf(
# ifdef ALLSCORES
"\nTop %s Scores %s:\n",
# else
"\nTop %s Robotists %s:\n",
# endif
NUMNAME,
type_str
);
printf("Rank Score Name\n");
for(position = sfile; position < eof; position++) {
if(position->s_score == 0) break;
if(position == this)
putchar('>');
else putchar(' ');
printf(
"%c%2zd %9ld %s: %s on level %d.",
position->s_days < limit ? '*' : ' ',
position-sfile+1,
position->s_score,
position->s_name,
position->s_eaten ? "eaten" : "chickened out",
position->s_level
);
if(position == this)
putchar('<');
putchar('\n');
}
}
return (this != 0);
}
void scorer(void)
{
static char tels[6];
if(free_teleports != old_free) {
if(free_teleports > free_per_level) {
(void) sprintf(tels,"%d+%d",
free_per_level,
free_teleports-free_per_level);
} else {
(void) sprintf(tels,"%d",free_teleports);
}
old_free = free_teleports;
}
move(LINES-1,0);
clrtoeol();
printw("<%s> level: %d score: %ld",tels,LEVEL,score);
mvprintw(LINES-1,RVPOS,"heaps:%3d robots:%3d value: %d",
scrap_heaps,nrobots_alive,robot_value);
clrtoeol();
}