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%D \module
%D   [       file=games-hex,
%D        version=2008.10.29,
%D          title=\CONTEXT\ User Module,
%D       subtitle=Hex,
%D         author=Wolfgang Schuster,
%D           date=\currentdate,
%D          email=schuster.wolfgang@googlemail.com,
%D      copyright=Wolfgang Schuster]

\writestatus{loading}{Context User Module / Games - Hex}

\unprotect

\definegame[\v!hexgame][\v!hex]

\def\sgfchar#1%
  {\ifnum#1<9
     \char\number\numexpr#1+64\relax
   \else\ifnum#1<26
     \char\number\numexpr#1+65\relax
   \fi\fi}

\def\hex!commands
  {newboard,drawboard,player}

\def\hex!copygamecommands
  {\expanded{\copyparameters[][hex!][\hex!commands]}}

\setvalue{\e!begin\????gm\????gm\v!hex}%
  {\hex!copygamecommands
   \hex!boardsize
   \hex!gamevalues}

\defineoverlay[overlay:hex][\overlaybutton{JS(Walk_Field{games!hex})}]

\setvalue{\e!end\????gm\????gm\v!hex}%
  {\doif{\gameparameter\c!interactive}\v!yes\hex!fieldstack}

\def\hex!fieldstack
  {\expanded{\definefieldstack[games!hex][\hex!list!symbols][\c!frame=\v!off]}%
   \framed
     [\c!frame=\v!off,
      \c!background={foreground,overlay:hex},
      \c!offset=\v!overlay]
     {\fieldstack[games!hex]}}

\def\hex!boardsize % what are common values for hex
  {\assignvalue{\gameparameter\c!nx}\hex!board!nx{11}{14}{19}%
   \assignvalue{\gameparameter\c!ny}\hex!board!ny{11}{14}{19}%
   \ctxlua{thirddata.games.hex.setup.nx = \number\hex!board!nx }%
   \ctxlua{thirddata.games.hex.setup.ny = \number\hex!board!ny }}

\def\hex!gamevalues
  {\startlua
   thirddata.games.hex.setup.size     = \number\dimexpr\gameparameter\c!stonesize\relax     ;
   thirddata.games.hex.setup.dx       = \number\dimexpr\gameparameter\c!dx\relax            ;
   thirddata.games.hex.setup.dy       = \number\dimexpr\gameparameter\c!dy\relax            ;
   thirddata.games.hex.setup.offset   = \number\dimexpr\gameparameter\c!frameoffset\relax   ;
   thirddata.games.hex.setup.distance = \number\dimexpr\gameparameter\c!labeldistance\relax ;
   \stoplua}

%D User commands

\def\hex!newboard
  {\ctxlua{thirddata.games.hex.board_new()}}

\def\hex!drawboard
  {\doifnot{\gameparameter\c!interactive}\v!yes
     {\hex!setboard{0}%
      \hex!getboard{0}}}

\def\hex!setboard#1%
  {\ctxlua{thirddata.games.hex.board_draw("games:hex:#1")}}

\def\hex!getboard#1%
  {\uniqueMPgraphic{games:hex:#1}}

\def\hex!player[#1]#2#3%
  {\bgroup
   \processaction
     [#1]
     [ \v!red=>\chardef\stonecolor\plusone,
      \v!blue=>\chardef\stonecolor\plustwo]%
   \ctxlua{thirddata.games.hex.field[#2][#3] = { color = \number\stonecolor }}%
   \egroup
   \doif{\gameparameter\c!interactive}\v!yes\hex!symbol}

\newcount\hex!count!symbols

\let\hex!list!symbols\empty

\def\hex!symbol
  {\expanded{\advance\hex!count!symbols\plusone}%
   \expanded{\hex!setboard{\number\hex!count!symbols}}%
   \expanded{\definesymbol[hex!symbol!\number\hex!count!symbols][\noexpand\hex!getboard{\number\hex!count!symbols}]}%
   \expanded{\appendtocommalist{hex!symbol!\number\hex!count!symbols}}\hex!list!symbols}

%D Lua functions

\ctxloadluafile{games-hex}{}

%D Default values

\setupgame
  [\v!hex]
  [\c!size=\v!small,
   \c!nx=\gameparameter\c!size,
   \c!ny=\gameparameter\c!size,
   \c!stonesize=\bodyfontsize,
   \c!dx=\gameparameter\c!stonesize,
   \c!dy=\gameparameter\c!dx,
   \c!frameoffset=0pt,
   \c!labeldistance=0pt,
   \c!labelstyle=\tx,
   \c!labelcolor=,
   \c!interaction=\v!no]

\protect \endinput