smarter chooser

1 files changed, 95 insertions, 0 deletions

diff --git a/lib/GridFiller/Chooser/Random.pm b/lib/GridFiller/Chooser/Random.pm
new file mode 100644
index 0000000..7b86d55
--- /dev/null
+++ b/lib/GridFiller/Chooser/Random.pm
@@ -0,0 +1,95 @@
+package GridFiller::Chooser::Random;
+use Moose;
+use namespace::autoclean;
+use GridFiller::Constants ':all';
+use Carp;
+
+extends 'GridFiller::Chooser';
+
+sub find_place_for {
+    my ($self,$word) = @_;
+
+    my $dir = int(rand(2)) ? $HORIZONTAL : $VERTICAL;
+
+    my $length = length $word;
+
+    my @ret;
+
+    if ($dir == $HORIZONTAL) {
+        @ret = $self->_find_place_horiz($length);
+        @ret = $self->_find_place_vert($length) unless @ret;
+    }
+    else {
+        @ret = $self->_find_place_vert($length);
+        @ret = $self->_find_place_horiz($length) unless @ret;
+    }
+
+    return @ret;
+}
+
+sub _find_place_horiz {
+    my ($self,$length) = @_;
+
+    my $rows = scalar @{$self->grid};
+    my $col;
+
+    for my $row (0..$rows-1) {
+        $col = $self->_find_in_row($row,$length);
+        return ($col,$row,$HORIZONTAL) if defined $col;
+    }
+    return;
+}
+
+sub _find_place_vert {
+    my ($self,$length) = @_;
+
+    my $cols = scalar @{$self->grid->[0]};
+    my $row;
+
+    for my $col (0..$cols-1) {
+        $row = $self->_find_in_col($col,$length);
+        return ($col,$row,$VERTICAL) if defined $row;
+    }
+    return;
+}
+
+{
+my %symbols=(
+    $NOTHING => ' ',
+    $BLACK => 'X',
+    $WHITE => 'O',
+);
+
+sub _do_find {
+    my ($self,$str,$length) = @_;
+
+    my ($skip) = ($str =~ m{^ (.*?) (?: X{$length} | O{$length} ) }x);
+
+    $self->log->debug(defined $skip ? " skip <$skip>" : " nope");
+
+    return length($skip) if defined $skip;
+    return;
+}
+
+sub _find_in_row {
+    my ($self,$row,$length) = @_;
+
+    my $str = join '',map { $symbols{$_} } @{$self->grid->[$row]};
+
+    $self->log->debug("row $row = $str");
+
+    return $self->_do_find($str,$length);
+}
+
+sub _find_in_col {
+    my ($self,$col,$length) = @_;
+
+    my $str = join '',map { $symbols{$_->[$col]} } @{$self->grid};
+
+    $self->log->debug("col $col = $str");
+
+    return $self->_do_find($str,$length);
+}
+}
+
+1;