package Watch;
use strict;

sub new {
    my ($class) = @_;
    my $self = { };
    bless $self, $class;
    $self->set_time("0:0:0");
    return $self;
}

sub set_time {
    my ($self,$time) = @_;
    my ($hrs,$mins,$secs) = split /:/, $time;
    my $seconds_from_zero = ($hrs*60 + $mins) * 60 + $secs;
    my $now = time;
    $self->{'ticker'} = $now - $seconds_from_zero;
    return $self; # XXX
}

sub time {
    my ($self) = @_;
    my $now = time;
    my $seconds_from_zero = $now - $self->{'ticker'};
    my $secs = $seconds_from_zero % 60;
    $seconds_from_zero /= 60;
    my $mins = $seconds_from_zero % 60;
    $seconds_from_zero /= 60;
    my $hrs = int($seconds_from_zero);
    return "$hrs:$mins:$secs";
}

1;