Nautical bell
Raku uses UTC (GMT) time internally and by default. This will display the current UTC time and on the half hour, display a graphical representation of the bell. If run in a terminal with the system bell enabled, will also chime the system alarm bell.
my @watch = <Middle Morning Forenoon Afternoon Dog First>;
my @ordinal = <One Two Three Four Five Six Seven Eight>;
my $thishour;
my $thisminute = '';
loop {
my $utc = DateTime.new(time);
if $utc.minute ~~ any(0,30) and $utc.minute != $thisminute {
$thishour = $utc.hour;
$thisminute = $utc.minute;
bell($thishour, $thisminute);
}
printf "%s%02d:%02d:%02d", "\r", $utc.hour, $utc.minute, $utc.second;
sleep(1);
}
sub bell ($hour, $minute) {
my $bells = (($hour % 4) * 2 + $minute div 30) || 8;
printf "%s%02d:%02d %9s watch, %6s Bell%s Gone: \t", "\b" x 9, $hour, $minute,
@watch[($hour div 4 - !?($minute + $hour % 4) + 6) % 6],
@ordinal[$bells - 1], $bells == 1 ?? '' !! 's';
chime($bells);
sub chime ($count) {
for 1..$count div 2 {
print "\a♫ ";
sleep .25;
print "\a";
sleep .75;
}
if $count % 2 {
print "\a♪";
sleep 1;
}
print "\n";
}
}Output:
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