Shlomi Fish


Games::LMSolve::Input - input class for LM-Solve


version 0.10.1


    use Games::LMSolve::Input;

    my $input_obj = Games::LMSolve::Input->new();

    my $file_spec = "board.txt";

    my $spec =
        'dims' => { 'type' => "xy(integer)", 'required' => 1, },
        'planks' => { 'type' => "array(start_end(xy(integer)))",
                      'required' => 1,
        'layout' => { 'type' => "layout", 'required' => 1,},

    my $input_fields = $input_obj->input_board($filename, $spec);


This class implements the input_board method, which enables to read boards in "key = value" format. Several types of values are supported.



Constrcuts a new object. Accepts no meaningful arguments.

$self->input_board($file_spec, $spec);

This method accepts two arguments. $file_spec which is the filename, reference to a filehandle, or reference to the text containing the board specification.

$spec is a specification of the board given as a reference to a hash. The keys are the keys inside the file. The values are references to hashes containing parameters. The 'required' parameter is given to specify that an exception should be thrown if this key was not specified. The other parameter (a mandatory one) is type which specified the type of the value. Available types are:


A simple integer (will be returned as a scalar)


An (X,Y) pair. Will be returned as { 'x' => $x, 'y' => $y }.


An array of [(X1,Y1),(X2,Y2),(X3,Y3)...] pairs. Will be returned as a reference to an array of (X,Y) pairs.


An array of [((SX1,SX2)->(EX1,EX2)), ((SX1,SX2)->(EX1,EX2))...] pairs of (X,Y) pairs. Will be returned as a reference to an array of

        'start' => { 'x' => $start_x, 'y' => $start_y },
        'end' => { 'x' => $end_x, 'y' => $end_y },

This is a generic layout that comes inside a here-document. It is returned as an array of lines that later have to be processed by another routine.

$self->input_horiz_vert_walls_layout($width, $height, \@lines)

Input a horizontal-vertical line layout as exists in a maze.


version 0.10.1


Written by Shlomi Fish ( )


Shlomi Fish <>


This software is Copyright (c) 2014 by Shlomi Fish.

This is free software, licensed under:

  The MIT (X11) License


Please report any bugs or feature requests on the bugtracker website or by email to

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.



You can find documentation for this module with the perldoc command.

  perldoc Games::LMSolve


The following websites have more information about this module, and may be of help to you. As always, in addition to those websites please use your favorite search engine to discover more resources.

Bugs / Feature Requests

Please report any bugs or feature requests by email to bug-games-lmsolve at, or through the web interface at You will be automatically notified of any progress on the request by the system.

Source Code

The code is open to the world, and available for you to hack on. Please feel free to browse it and play with it, or whatever. If you want to contribute patches, please send me a diff or prod me to pull from your repository :)

  git clone