Centralize rounding decisions, so we round symmetrically.

[foosball] / foosball.pm

diff --git a/foosball.pm b/foosball.pm
index dc5ff223d4c70b82493dbd2a067b3f62d8b930e7..9c3821834525e665d2b1fddeb6e13adbd18fb015 100644 (file)
--- a/foosball.pm
+++ b/foosball.pm
@@ -1,6 +1,7 @@
 use strict;
 use warnings;
 use DBI;
+use POSIX;
 
 package foosball;
 
@@ -10,6 +11,12 @@ sub db_connect {
        return $dbh;
 }
 
+sub round {
+       my $x = shift;
+       return -round(-$x) if ($x < 0.0);
+       return POSIX::floor($x + 0.5);
+}
+
 sub find_single_rating {
        my ($dbh, $username, $limit) = @_;
        my ($age, $rating, $rd) = $dbh->selectrow_array('SELECT EXTRACT(EPOCH FROM (CURRENT_TIMESTAMP-ratetime)), rating, rd FROM single_rating WHERE username=? '.$limit.' ORDER BY ratetime DESC LIMIT 1',
@@ -81,4 +88,16 @@ sub calc_rating {
        return ($newr1, $newrd1);
 }
 
+sub calc_rating_double {
+       my ($rating1, $rd1, $rating2, $rd2, $rating3, $rd3, $rating4, $rd4, $score1, $score2) = @_;
+       my $result = `/srv/foosball.sesse.net/foosrank $rating1 $rd1 $rating2 $rd2 $rating3 $rd3 $rating4 $rd4 $score1 $score2`;
+       chomp $result;
+       my ($newr1, $newrd1) = split / /, $result;
+
+       $newrd1 = 30.0 if ($newrd1 < 30.0);
+
+       return ($newr1, $newrd1);
+}
+
+
 1;