Add a "idle" method to the state structure

[neverball] / COPYING

                    GNU GENERAL PUBLIC LICENSE
                       Version 2, June 1991

 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
               59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

Everyone is permitted  to copy and distribute verbatim  copies of this
license document, but changing it is not allowed.

                            Preamble

  The  licenses for  most  software  are designed  to  take away  your
freedom to share  and change it.  By contrast,  the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure  the software is free for  all its users.  This
General  Public   License  applies  to  most  of   the  Free  Software
Foundation's software and to any other program whose authors commit to
using it.  (Some other Free Software Foundation software is covered by
the GNU Library General Public  License instead.)  You can apply it to
your programs, too.

  When we  speak of  free software, we  are referring to  freedom, not
price.  Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that  you receive source code or can get it
if you want it,  that you can change the software or  use pieces of it
in new free programs; and that you know you can do these things.

  To protect  your rights,  we need to  make restrictions  that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions  translate to  certain responsibilities for  you if
you distribute copies of the software, or if you modify it.

  For example,  if you  distribute copies of  such a  program, whether
gratis or for a fee, you  must give the recipients all the rights that
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source code.   And you must show  them these terms so  they know their
rights.

  We protect your  rights with two steps: (1)  copyright the software,
and (2)  offer you  this license which  gives you legal  permission to
copy, distribute and/or modify the software.

  Also, for each author's protection and ours, we want to make certain
that  everyone understands  that there  is no  warranty for  this free
software.  If the software is  modified by someone else and passed on,
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  Finally,  any  free program  is  threatened  constantly by  software
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all.

  The  precise  terms and  conditions  for  copying, distribution  and
modification follow.

                    GNU GENERAL PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. This License applies to any  program or other work which contains
a notice placed  by the copyright holder saying  it may be distributed
under the terms of this General Public License.  The "Program", below,
refers to any such program or  work, and a "work based on the Program"
means either the  Program or any derivative work  under copyright law:
that is  to say,  a work containing  the Program  or a portion  of it,
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the term "modification".)  Each licensee is addressed as "you".

Activities other  than copying, distribution and  modification are not
covered  by this  License; they  are outside  its scope.   The  act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the Program
(independent  of having been  made by  running the  Program).  Whether
that is true depends on what the Program does.

  1. You  may copy  and distribute  verbatim copies  of  the Program's
source  code as  you  receive it,  in  any medium,  provided that  you
conspicuously and  appropriately publish  on each copy  an appropriate
copyright  notice and  disclaimer  of warranty;  keep  intact all  the
notices that refer to this License and to the absence of any warranty;
and give  any other recipients of  the Program a copy  of this License
along with the Program.

You may charge a fee for  the physical act of transferring a copy, and
you may  at your  option offer warranty  protection in exchange  for a
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  2. You may modify your copy or  copies of the Program or any portion
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    c) If  the modified program normally  reads commands interactively
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These  requirements  apply  to  the  modified work  as  a  whole.   If
identifiable sections of  that work are not derived  from the Program,
and  can be reasonably  considered independent  and separate  works in
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In addition, mere aggregation of another work not based on the Program
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except  as  expressly  provided   under  this  License.   Any  attempt
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to distribute software through any  other system and a licensee cannot
impose that choice.

This section is intended to  make thoroughly clear what is believed to
be a consequence of the rest of this License.

  8. If the  distribution and/or use  of the Program is  restricted in
certain countries either by  patents or by copyrighted interfaces, the
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may  add an  explicit geographical  distribution  limitation excluding
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countries not thus excluded.   In such case, this License incorporates
the limitation as if written in the body of this License.

  9. The  Free  Software Foundation  may  publish  revised and/or  new
versions of  the General Public License  from time to  time.  Such new
versions will  be similar  in spirit to  the present version,  but may
differ in detail to address new problems or concerns.

Each version is given a distinguishing version number.  If the Program
specifies a  version number  of this License  which applies to  it and
"any later  version", you have the  option of following  the terms and
conditions either of that version or of any later version published by
the  Free Software  Foundation.  If  the  Program does  not specify  a
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published by the Free Software Foundation.

  10. If you wish to incorporate  parts of the Program into other free
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we sometimes make exceptions for this.  Our decision will be guided by
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                            NO WARRANTY

  11. BECAUSE  THE PROGRAM  IS LICENSED  FREE OF  CHARGE, THERE  IS NO
WARRANTY FOR THE  PROGRAM, TO THE EXTENT PERMITTED  BY APPLICABLE LAW.
EXCEPT WHEN  OTHERWISE STATED IN WRITING THE  COPYRIGHT HOLDERS AND/OR
OTHER  PARTIES PROVIDE  THE PROGRAM  "AS IS"  WITHOUT WARRANTY  OF ANY
KIND, EITHER EXPRESSED OR IMPLIED,  INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED  WARRANTIES OF  MERCHANTABILITY AND  FITNESS FOR  A PARTICULAR
PURPOSE.  THE  ENTIRE RISK  AS TO THE  QUALITY AND PERFORMANCE  OF THE
PROGRAM IS WITH  YOU.  SHOULD THE PROGRAM PROVE  DEFECTIVE, YOU ASSUME
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

  12. IN NO  EVENT UNLESS REQUIRED BY  APPLICABLE LAW OR  AGREED TO IN
WRITING WILL ANY  COPYRIGHT HOLDER, OR ANY OTHER  PARTY WHO MAY MODIFY
AND/OR REDISTRIBUTE THE  PROGRAM AS PERMITTED ABOVE, BE  LIABLE TO YOU
FOR   DAMAGES,   INCLUDING  ANY   GENERAL,   SPECIAL,  INCIDENTAL   OR
CONSEQUENTIAL DAMAGES ARISING  OUT OF THE USE OR  INABILITY TO USE THE
PROGRAM  (INCLUDING BUT  NOT LIMITED  TO LOSS  OF DATA  OR  DATA BEING
RENDERED INACCURATE OR  LOSSES SUSTAINED BY YOU OR  THIRD PARTIES OR A
FAILURE OF  THE PROGRAM TO OPERATE  WITH ANY OTHER  PROGRAMS), EVEN IF
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.

                     END OF TERMS AND CONDITIONS

            How to Apply These Terms to Your New Programs

  If you develop a new program, and  you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software  which everyone can redistribute and  change under these
terms.

  To do so, attach the following notices to the program.  It is safest
to attach  them to the start  of each source file  to most effectively
convey the exclusion  of warranty; and each file  should have at least
the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

    This  program is  free software;  you can  redistribute  it and/or
    modify it  under the  terms of the  GNU General Public  License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.

    This program  is distributed in the  hope that it  will be useful,
    but  WITHOUT ANY WARRANTY;  without even  the implied  warranty of
    MERCHANTABILITY or FITNESS FOR  A PARTICULAR PURPOSE.  See the GNU
    General Public License for more details.

    You should have received a  copy of the GNU General Public License
    along  with this  program;  if  not, write  to  the Free  Software
    Foundation,  Inc.,   59  Temple  Place,  Suite   330,  Boston,  MA
    02111-1307 USA


Also add information on how to contact you by electronic and paper mail.

If  the program is  interactive, make  it output  a short  notice like
this when it starts in an interactive mode:

    Gnomovision version 69, Copyright (C) year name of author
    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The  hypothetical commands  `show  w'  and `show  c'  should show  the
appropriate  parts of  the  General Public  License.   Of course,  the
commands you use may be called something other than `show w' and `show
c'; they could even be mouse-clicks or menu items--whatever suits your
program.

You should  also get your  employer (if you  work as a  programmer) or
your school, if any, to sign a "copyright disclaimer" for the program,
if necessary.  Here is a sample; alter the names:

  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
  `Gnomovision' (which makes passes at compilers) written by James Hacker.

  <signature of Ty Coon>, 1 April 1989
  Ty Coon, President of Vice

This General Public License does not permit incorporating your program
into proprietary  programs.  If your program is  a subroutine library,
you  may  consider  it  more  useful  to  permit  linking  proprietary
applications with  the library.  If this  is what you want  to do, use
the GNU Library General Public License instead of this License.