NAME
Games::Sudoku::Component - provides APIs for Sudoku solver/generator
SYNOPSIS
use Games::Sudoku::Component;
# Let's create a Sudoku object first.
my $sudoku = Games::Sudoku::Component->new(
size => 9,
);
# Then, generate a new Sudoku puzzle. This may take minutes.
$sudoku->generate(
blanks => 50,
);
# Or, you can load puzzle data from text file.
$sudoku->load(
filename => 'puzzle.txt',
);
# Let's see if the puzzle is created successfully.
print $sudoku->as_string(
separator => ' ',
linebreak => "\n",
);
# Then solve the puzzle. This may take minutes, too.
# Solver may fail sometimes, especially the puzzle is large,
# but it automatically tries another solution(s) if possible.
$sudoku->solve;
# Check the result.
print $sudoku->is_solved ? 'solved' : 'gave up';
# You can output the result as an HTML table, too.
print $sudoku->as_HTML;
DESCRIPTION
This is yet another Sudoku (Numberplace) solver/generator. Games::Sudoku::Component provides common (but rather limited) methods to make it easy to play Sudoku -- just for example.
Actually, this module set is written to provide 'controller' APIs to other applications. You can easily integrate this with CGI or Perl/Tk application. See appropriate PODs for details.
METHODS
new (hash or hashref)
Creates an object. Options are:
- size
-
Specifies the size of a puzzle board (table). The default is 9. Actually this value is assumed to be a square of another integer.
- block_width
- block_height
-
Specify the width/height of internal blocks, respectively. (
block_width
xblock_height
=size
)
generate (hash or hashref)
Generates a puzzle. Options are:
- blanks
-
Specifies how many blanks are there in the puzzle. The default is (
size
xsize
x 0.75).
load (string or hash or hashref)
Loads and parses puzzle data from file or string. If there is only one argument, it is assumed to be raw puzzle data.
$sudoku->load(<<'EOT');
4 . . . . 1
2 1 . . 5 .
3 5 1 2 6 .
1 . . . 3 .
6 . . 5 1 2
5 . . . 4 6
EOT
If the argument seems to be a hash, data will be loaded from $hash{filename} (or $hash{file}, for short).
solve
Solves the puzzle that you generated or loaded. You can solve a 'blank' puzzle. In fact, that is how it generates a new puzzle.
is_solved
Returns true if the puzzle is solved.
clear
Clears the generated or loaded puzzle.
as_string (hash or hashref)
Returns the stringified puzzle. Options are:
- separator
-
Specifies a separator between table columns. The default is a whitespace (' ').
- linebreak
-
Specifies a separator between table rows. The default is a line break ("\n").
as_HTML
Almost same as above but returns an HTML table. Options are:
- border
-
Specifies a size of the table borders. The default is 1.
- linebreak
-
Specifies a separator between table tags. The default is a line break ("\n").
- color_by_block
- color_by_cell
-
If set true, each cell has an 'even' or 'odd' class attribute. If your prepare an appropriate CSS, the table will be two-toned.
SEE ALSO
There are many Sudoku implementations around there. I haven't seen them all yet, but the POD of Games::Sudoku::General is a good starting point.
As for the details of Games::Sudoku::Component modules, see:
- Games::Sudoku::Component::Base
- Games::Sudoku::Component::Controller
- Games::Sudoku::Component::Controller::History
- Games::Sudoku::Component::Controller::Loader
- Games::Sudoku::Component::Controller::Status
- Games::Sudoku::Component::Result
- Games::Sudoku::Component::Table
- Games::Sudoku::Component::Table::Cell
- Games::Sudoku::Component::Table::Item
- Games::Sudoku::Component::Table::Permission
AUTHOR
Kenichi Ishigaki, <ishigaki@cpan.org>
COPYRIGHT AND LICENSE
Copyright (C) 2006 by Kenichi Ishigaki
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.