8.3.7

wtriangles
==========

A Triangles Widget

Web: https://www.sillycycle.com/puzzles.html

Download: Primary site: https://www.sillycycle.com/puzzles
          Secondary site: http://ibiblio.org/pub/Linux/games/strategy

Maintainer: David A. Bagley <bagleyd AT verizon.net>

  To build you need at minimum both of these, X11 and Xt (unless you are
  looking to build win32).
    sudo apt-get install libx11-dev
    sudo apt-get install libxt-dev
  You may need to install one of these to build Motif version:
    sudo apt-get install libmotif-dev (strongly recommended)
    sudo apt-get install lesstif2-dev (defunct)
  You need to install XPM if you want color icons:
    sudo apt-get install libxpm-dev (strongly recommended)
  To install XMU if you want editres:
    sudo apt-get install libxmu-dev (probably not useful)
  To install sound libraries (defunct):
    sudo apt-get install librplay3-dev
    sudo apt-get install libesd0-dev
    sudo apt-get install libaudiofile-dev
    sudo apt-get install nas-dev
    sudo apt-get install pulse-dev
      In place of these it is just configured by default with
      --enable-def-play=play.sh
  Then should be a simple
    configure; make

  Try resizing the puzzle.  Notice the puzzle resizes to take advantage of
  the "room" available.

  Try editing the file Triangles.ad to get a certain feature and then
  copying to $(HOME)/Triangles (where Triangles is the file name) and
  running xtriangles again.  There is also a Windows port (wtriangles).

  If you were looking for a auto-solver, sorry.

  Refer to the man page for detailed command line options and instructions
  on how to operate.

  If you want further information on puzzles, I'll be glad :-) to send
  it to you.

MATHEMATICAL STUFF USED IN CONSTRUCTION

  Assuming it is a triangle of i triangles in each row and the
  numbering starts from 1.
    Corner 1-> 1
           2-> i^2-2i+2
           3-> i^2

    Center -> i%3 =>
           0: None
           1: j(j+1)+1 where j=2(i-1)/3
           2: j(j+1)+1 where j=2(i-2)/3+1

    Max_Width -> i units
    Max_Height -> 3^(1/2)i/2 units

    Start -> x= i/2 units
             y=0
             side=UP
             fin=1
             step=1
    Next -> (fin==n) =>
         true: x+= -step/2 units; y+=3^(1/2)/2 units; side=UP;
               step+=2; fin+=step
         default: side=!side; x+=1/2 unit;
               y+= (side==UP)?-3^(1/2)/2:3^(1/2)/2

    Same row? -> (m'==n') where s'=sqrt_trunc(s-1) {k}
    Same trbl? -> (((m-1) - m'*m')/2 == ((n-1) - n'*n')/2)) {i}
    Same tlbr? -> (((m'+1)(m'+1) - m)/2 == ((n'+1)(n'+1) - n)/2) {j}

FOUND A BUG?

  Send bugs reports and fixes to the author. For bugs, please include
  as much information as to their location as possible, since I may not
  be able to duplicate them.

other stuff todo
  double buffering.
  clean up lines from slide, more scalable using numSlides.
  triangles: variable sides... it would be a hexagon then.
  auto-solve capability

Updates:
  [Dec 07, 2020]  V8.3.1:
    Handle corrupted buffer better.
  [Nov 19, 2020]  V8.3.0:
    'r' is now for redo and 'g' for get record (formerly read record).
  [Apr 11, 2020]  V8.2.7:
    Fixing a few buffer overflows from latest gcc.
  [Apr 04, 2020]  V8.2.6:
    Lots of spelling errors fixed due to codespell
      https://manpages.debian.org/testing/codespell/codespell.1.en.html
    Updated references to website to https.  https://www.sillycycle.com
  [Feb 15, 2019]  V8.2.1:
    Fixed spinner to not wrap and be unlimited where appropriate.
  [Oct 02, 2018]  V8.2.0:
    Removing strcpy and strcat calls by migrating to strncpy and strncat.
      Added HAVE_SNPRINTF compile-time option.
  [Jul 21, 2018]  V8.1.8:
    Fixing sound installation.
  [Apr 03, 2018]  V8.1.7:
    Updated to use spinner (using latest Motif  ;) ).
  [Oct 15, 2017]  V8.1.4:
    Removed gcc 7 warnings.
  [Oct 01, 2017]  V8.1.3:
    Updates for 64 bit compilation in Windows.
  [Aug 01, 2017]  V8.1.1:
    Valgrind helped find some definite memory leaks.
  [Jul 17, 2017]  V8.1.0:
    Updated sound configuration for X version.  Uses a simple included
      script play.sh, that is now used by default.
  [Sep 13, 2016]  V8.0.5:
    Old website http://www.tux.org/~bagleyd died, shifted code base to
      new website http://www.sillycycle.com
  [Feb 24, 2015]  V8.0.0:
    Sound and install fixes.
  [May 13, 2014]  V7.7.4: 
    Synchronized save and restore with Java version.
  [Jan 20, 2014]  V7.7.3:
    Reorganized pixmap directory.
  [Jan 10, 2013]  V7.7.1:
    Cleaned up some duplication in Motif menu.
    Added scroll to feature help dialog.
    New bold fontlist in resource file, so things are easier to read.
  [Oct 22, 2010]  V7.6.4:
    Changed key mappings g->r for read file, r->e for redo.
  [Jan 21, 2010]  V7.6:
    Version handling changed to a single version.h (and man page).
    Sound fixed for esound.
  [Nov 10, 2009]  V7.5.1:
    Windows version: added accelerator for references.
  [Jun 05, 2009]  V7.5:
    Cleaned up menu look.
    Fixed again for NAS sound.
  [Dec 14, 2008]  V7.4.3:
    Fixed for NAS sound.
  [Jul 21, 2008]  V7.4.1:
    Strange character at end of help title removed.
  [Jul 11, 2008]  V7.4:
    Leading function names in lowercase.
  [Feb 29, 2008]  V7.3.4:
    Changed pointer from crosshair to hand2.
  [Dec 24, 2007]  V7.3.3:
    Constants changed.
    Added 3d look to frame.
  [Nov 06, 2007]  V7.3.2:
    Updated action codes and synchronized Java and C code.
    Various small changes.
  [Feb 23, 2007]  V7.3:
    Html no longer corrupted.
    reverseVideo update.
  [Jan 08, 2007]  V7.2.7:
    New bump.au sound, db lowered, and bumpdat.au removed, thanks to
      http://audacity.sourceforge.net to help clean the sound up.
  [Dec 12, 2006]  V7.2.6:
    Now use http://netpbm.sourceforge.net to generate images from xpm.
  [Oct 11, 2006]  V7.2.4:
    Fixed menu to assure the ok part of queries is handled correctly.
  [Jul 21, 2006]  V7.2.2:
    Fixed assorted memory leaks and uninitialized memory access reads.
    r is now for redo.  z is now the character for randomize.
    no more fully random positions, a starting position is
      made by randomly turning puzzle CCW or CW (+-120 degrees).
  [Apr 01, 2006]  V7.2:
    Made usage string compatible with versions of Motif and screen.
    More defensive code in case getlogin fails.
  [Oct 05, 2005]  V7.1.5:
    scoreFile and userName fixes
    -version added
    -score added
    Common option help for X and X-Motif
  [May 31, 2005]  V7.1.4:
    Separated out compatible components.
  [Nov 21, 2004]  V7.1.2:
    Small changes synchronizing with Java code.
    Thanks to Debian maintainer Florian Ernst <florian AT uni-hd.de> for
      esound fix.
  [Sep 29, 2004]  V7.1.1:
    Sound, "<" and ">" speed control.
  [Aug 23, 2004]  V7.1:
    Thanks to Debian maintainer Florian Ernst <florian AT uni-hd.de> for
      fixing a compilation problem with X and without Motif.
    Added font option.
  [Dec 15, 2003]  V7.0.1:
    The Hide functionality of the Escape key now iconifies or drops in
      task bar.
    Added help in Windows.
    Accelerator Keys (F keys and regular keys) in Windows now work.
  [Nov 15, 2003]  V7.0:
    Integrated winpuz6.5 (Windows 3.1/95) into X source tree.
  [Sep 28, 2003]  V5.7.3:
    Undo a little faster than normal.
  [Aug 28, 2003]  V5.7.2:
    png for Gnome and KDE menus and xpm for CDE menus.
    install-games configure option and added other installation options.
    Added xpm for icon.
    Help kicked over.
  [Aug 07, 2003]  V5.7.1:
    port back from Java for animation originally done by Sarat Chandran
      <saratcmahadevan AT yahoo.com>, a little bit cleaner and allows multiple
      tile slides.  (It does flash a little and was trying a non-flashing
      approach but gave up for the time being.)
  [Jul 07, 2003]  V5.7:
    Thanks to my daughter for banging on the keys:
      Resetting key sliders and toggles should reset display message.
      Fix for select and release done at the same time as
        clear, undo, randomize, or solve.
    Test for cheating from get.
    Popup for auto-solve.
    Clear now checks if you really want to randomize the puzzle using
      left mouse button, 'r' will not query
    'Esc' will hide the puzzle (actually osfCancel did the trick)
    Help & About expanded and pop-ups added
    Took out bitmaps since it takes too much room
  [Mar 21, 2003]  V5.6.2:
    Installation fixes for Motif and X versions.
  [Nov 06, 2002]  V5.6.1:
    VMS Motif fix and minor changes
  [Sep 06, 2002]  V5.6:
    configure if around 2nd AC_CHECK_FUNC
    removed Sun CC (char *) warnings
    removed hard coding of program name
    Cygwin changes ./, -lSM -lICE
    record store fix
    x and xm files combined using HAVE_MOTIF
    port back from Java (on the Java side I got some help from
        Sarat Chandran <saratcmahadevan AT yahoo.com>)
      use -1 for NEVER instead of 32767
      handle nobody = (null)
      .data->.dat for consistency
      frame color change on enter/leave
      background/foreground set by default
      allow more arrow keys (osf)
      menu
      3d tiles
      puzzle border changes
      clear
      PositionToTile update
      trbl / 2,tlbr / 2 fix
      extra variable: vertical
      reset maximum
  [Sep 01, 2001]  V5.5.4: g++ 3.0 warnings removed.
  [Mar 27, 2001]  V5.5.3: Infinite loop fix for ARM thanks to Matej Vela
    <mvela AT public.srce.hr>.
  [Aug 11, 1999]  V5.5.2: Fixed runtime library problems when using configure.
  [Jul 31, 1999]  V5.5.1: Imakefile fix for xtriangles, and removed HP usleep
    warning.
  [Jun 20, 1999]  V5.5: Added -rv, -mono, -base
  [Jan 01, 1997]  V5.4: Username, concurrency check, configure, man page
    updates.
  [Apr 08, 1996]  V5.3: Minor changes.
  [Jan 31, 1996]  V5.2: Tiles will invert, when selected.
    Now using dynamic allocation, so there is no maximum size.
  [Dec 15, 1995]  V5.1: Minor updates, RNG for 32/64 bit, border color
    to make faces look more realistic.
  [Oct 01, 1995]  V5.0: Xt/Motif, your choice.
  [May 16, 1995]  V4.10: Warnings removed from Sun's cc and lint and now
    include a random number generator.
  [Mar 13, 1995]  V4.4: Removed lint warnings and added a VMS make.com .
  [Nov 11, 1994]  V4.3: Conservative guess for random number generator.
  [Oct 30, 1994]  V4.2: Now allows undos, saves, and recalls, also fixed a bug
    where multiple moves were logged for certain single moves.
  [Jun 28, 1994]  V4.1: Can accommodate a auto-solver.
  [Jun 07, 1994]  V4.0: Xt version.
    I got some good ideas from oclock.
  [Apr 01, 1993]  V3.0: Motif version.
    I got some good ideas from Douglas A. Young's
    book: "The X Window System Programming and Applications
    with Xt OSF/Motif Edition", particularly his dial widget.
    I got some good ideas on presentation from Q. Zhao's
    tetris.
  [Jan 06, 1992]  V2.0: XView version.
  [Sep 05, 1991]  V1.0: SunView version.
