58 lines
1.1 KiB
Perl
58 lines
1.1 KiB
Perl
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package P2;
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use 5.20.0;
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use warnings;
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use List::AllUtils qw/ /;
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use Math::Vector::Real;
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require './part1.pm';
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use Moose;
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use MooseX::MungeHas 'is_rw';
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extends 'P1';
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use experimental qw/ signatures postderef /;
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has +facing => sub { V(10,1) };
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sub turn($self,$n) {
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my $f = $self->facing;
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my $d = ($n/90)%4;
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given( $d ) {
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return V($f->[1], -$f->[0]) when 1;
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return V(-$f->[0], -$f->[1]) when 2;
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return V(-$f->[1], $f->[0]) when 3;
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}
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return $f;
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}
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sub move($self,$m) {
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$m =~ /(.)(\d+)/;
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my ( $x, $c ) = ($1,$2);
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my $coords = $self->coords;
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my $facing = $self->facing;
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given($x) {
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$coords += $c * $self->facing when 'F';
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$facing += $c * $self->delta->[0] when 'N';
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$facing += $c * $self->delta->[1] when 'E';
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$facing += $c * $self->delta->[2] when 'S';
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$facing += $c * $self->delta->[3] when 'W';
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$facing = $self->turn($c) when 'R';
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$facing = $self->turn(-$c) when 'L';
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}
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$self->facing($facing);
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$self->coords($coords);
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warn $self->facing;
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warn $self->coords;
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}
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1;
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