-- Forked from [[Module:Sandbox/Bawolff/Chessboard]]
----------------------------------------------------
-- Inspired by Module:Sandbox/SD0001/Chessboard
-- Modified from Module:Chessboard
-- This is just an experimental hack, so this code is super messy.
-- Todo: Use CSS animations to show the pieces move.
local p = {}
local cfg, nrows, ncols
cfg = {}
-- From Module:Chessboard/chess
function cfg.dims()
return 8, 8
end
function cfg.letters()
return {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'}
end
function cfg.image_board(size)
return string.format( '[[File:Chessboard480.svg|%dx%dpx|link=|class=notpageimage]]', 8 * size, 8 * size )
end
function cfg.image_square( pc, row, col, size )
local colornames = { l = 'white', d = 'black', u = 'unknown color' }
local piecenames = {
p = 'pawn',
r = 'rook',
n = 'knight',
b = 'bishop',
q = 'queen',
k = 'king',
a = 'archbishop',
c = 'chancellor',
z = 'champion',
w = 'wizard',
t = 'fool',
M = 'mann',
h = 'upside-down pawn',
m = 'upside-down rook',
B = 'upside-down bishop',
N = 'upside-down knight',
f = 'upside-down king',
g = 'upside-down queen',
e = 'elephant',
s = 'boat',
G = 'giraffe',
U = 'unicorn',
Z = 'zebra'
}
local symnames = {
xx = 'black cross',
ox = 'white cross',
xo = 'black circle',
oo = 'white circle',
ul = 'up-left arrow',
ua = 'up arrow',
ur = 'up-right arrow',
la = 'left arrow',
ra = 'right arrow',
dl = 'down-left arrow',
da = 'down arrow',
dr = 'down-right arrow',
lr = 'left-right arrow',
ud = 'up-down arrow',
db = 'up-right and down-left arrow',
dw = 'up-left and down-right arrow',
x0 = 'zero',
x1 = 'one',
x2 = 'two',
x3 = 'three',
x4 = 'four',
x5 = 'five',
x6 = 'six',
x7 = 'seven',
x8 = 'eight',
x9 = 'nine'
}
local colchar = {'a','b','c','d','e','f','g','h'}
local color = mw.ustring.gsub( pc, '^.*(%w)(%w).*$', '%2' ) or ''
local piece = mw.ustring.gsub( pc, '^.*(%w)(%w).*$', '%1' ) or ''
--local alt = colchar[col] .. row .. ' '
local alt = ''
if colornames[color] and piecenames[piece] then
alt = alt .. colornames[color] .. ' ' .. piecenames[piece]
else
alt = alt .. ( symnames[piece .. color] or piece .. ' ' .. color )
end
return string.format( '[[File:Chess %s%st45.svg|%dx%dpx|alt=%s|%s|link=|class=notpageimage|top]]', piece, color, size, size, alt, alt )
end
-- End Module:Chessboard/chess
-- start Module:Chessboard
local function innerboard(definedPieces, pieceInfo, size, rev)
pattern = cfg.pattern or '%w%w'
local root = mw.html.create('div')
root:addClass('chess-pieces notheme')
:css('position', 'relative')
:wikitext(cfg.image_board(size))
for piece in pairs( definedPieces ) do
if piece:match( pattern ) then
local img = cfg.image_square(piece:match(pattern), row, col, size )
local curPos = pieceInfo[1][piece] or {-1,-1}
local class = piece:match( "^[nN]" ) and 'knight' or 'nonknight'
root:tag('div')
:css('top', 'calc(var(--calculator-top_piece' .. piece .. ',' .. curPos[1] .. ')*1px)' )
:css('left', 'calc(var(--calculator-left_piece' .. piece .. ',' .. curPos[2] .. ')*1px)')
:css( 'z-index', 'min(var(--calculator-top_piece' .. piece .. ',' .. curPos[1] .. '),0)' )
:addClass( class )
:wikitext(img)
end
end
return tostring(root)
end
local function getPositions(args, size, rev)
pattern = cfg.pattern or '%w%w'
local pieceInfo = {}
local definedPieces = {}
for moveIndex, move in ipairs( args ) do
pieceInfo[moveIndex] = {}
local layout = convertFenToArgs( move )
for trow = 1,nrows do
local row = rev and trow or ( 1 + nrows - trow )
for tcol = 1,ncols do
local col = rev and ( 1 + ncols - tcol ) or tcol
local piece = layout[ncols * ( nrows - row ) + col + 2] or ''
local pieceName = piece:match( pattern )
if pieceName then
while true do
-- you can have multiple queens at same time.
if pieceInfo[moveIndex][pieceName] then
pieceName = pieceName .. '_'
else
break
end
end
definedPieces[pieceName] = true
pieceInfo[moveIndex][pieceName] = { ( trow - 1 ) * size, ( tcol - 1 ) * size }
end
end
end
end
return definedPieces, pieceInfo
end
function chessboard(definedPieces, pieceInfo, size, rev, letters, numbers, header, footer, align, clear)
function letters_row( rev, num_lt, num_rt )
local letters = cfg.letters()
local root = mw.html.create('')
if num_lt then
root:tag('td')
end
for k = 1,ncols do
root:tag('td')
:css('height', '18px')
:css('width', size .. 'px')
:wikitext(rev and letters[1+ncols-k] or letters[k])
end
if num_rt then
root:tag('td')
end
return tostring(root)
end
local letters_top = letters:match( 'both' ) or letters:match( 'top' )
local letters_bottom = letters:match( 'both' ) or letters:match( 'bottom' )
local numbers_left = numbers:match( 'both' ) or numbers:match( 'left' )
local numbers_right = numbers:match( 'both' ) or numbers:match( 'right' )
local width = ncols * size + 2
if ( numbers_left ) then width = width + 18 end
if ( numbers_right ) then width = width + 18 end
local root = mw.html.create('div')
:addClass('chessboard')
:addClass( 'calculator-container' )
:addClass('thumb')
:addClass('noviewer')
:addClass(align)
if( header and header ~= '' ) then
root:tag('div')
:addClass('center')
:css('line-height', '130%')
:css('margin', '0 auto')
:css('max-width', (width + ncols) .. 'px')
:wikitext(header)
end
local div = root:tag('div')
:addClass('thumbinner')
:css('width', width .. 'px')
local b = div:tag('table')
:attr('cellpadding', '0')
:attr('cellspacing', '0')
if ( letters_top ) then
b:tag('tr')
:wikitext(letters_row( rev, numbers_left, numbers_right ))
end
local tablerow = b:tag('tr')
if ( numbers_left ) then
tablerow:tag('td')
:css('width', '18px')
:css('height', size .. 'px')
:wikitext(rev and 1 or nrows)
end
local td = tablerow:tag('td')
:attr('colspan', ncols)
:attr('rowspan', nrows)
:wikitext(innerboard(definedPieces, pieceInfo, size, rev))
if ( numbers_right ) then
tablerow:tag('td')
:css('width', '18px')
:css('height', size .. 'px')
:wikitext(rev and 1 or nrows)
end
if ( numbers_left or numbers_right ) then
for trow = 2, nrows do
local idx = rev and trow or ( 1 + nrows - trow )
tablerow = b:tag('tr')
if ( numbers_left ) then
tablerow:tag('td')
:css('height', size .. 'px')
:wikitext(idx)
end
if ( numbers_right ) then
tablerow:tag('td')
:css('height', size .. 'px')
:wikitext(idx)
end
end
end
if ( letters_bottom ) then
b:tag('tr')
:wikitext(letters_row( rev, numbers_left, numbers_right ))
end
if footer and mw.text.trim(footer)~='' then
div:tag('div')
:addClass('thumbcaption')
:wikitext(footer)
end
return tostring(root) ..
mw.getCurrentFrame():extensionTag( 'templatestyles', '', { src = 'Module:Chessboard/styles.css' } )
end
function convertFenToArgs( fen )
-- converts FEN notation to 64 entry array of positions, offset by 2
local res = { ' ', ' ' }
-- Loop over rows, which are delimited by /
for srow in string.gmatch( "/" .. fen, "/%w+" ) do
-- Loop over all letters and numbers in the row
for piece in srow:gmatch( "%w" ) do
if piece:match( "%d" ) then -- if a digit
for k=1,piece do
table.insert(res,' ')
end
else -- not a digit
local color = piece:match( '%u' ) and 'l' or 'd'
piece = piece:lower()
table.insert( res, piece .. color )
end
end
end
return res
end
function convertArgsToFen( args, offset )
function nullOrWhitespace( s ) return not s or s:match( '^%s*(.-)%s*$' ) == '' end
function piece( s )
return nullOrWhitespace( s ) and 1
or s:gsub( '%s*(%a)(%a)%s*', function( a, b ) return b == 'l' and a:upper() or a end )
end
local res = ''
offset = offset or 0
for row = 1, 8 do
for file = 1, 8 do
res = res .. piece( args[8*(row - 1) + file + offset] )
end
if row < 8 then res = res .. '/' end
end
return mw.ustring.gsub(res, '1+', function( s ) return #s end )
end
local function getPieceMoves( definedPieces, pieceInfo )
local ret = ''
for piece in pairs( definedPieces ) do
local curTop = -1
local curLeft = -1
local switchTop = 'switch(move,'
local switchLeft = 'switch(move,'
for moveNumber, move in ipairs( pieceInfo ) do
if (move[piece] and move[piece][1] or -1) ~= curTop then
switchTop = switchTop .. (moveNumber-1) .. ',' .. curTop .. ','
curTop = (move[piece] and move[piece][1] or -1)
end
if move[piece] and move[piece][2] or -1 ~= curLeft then
switchLeft = switchLeft .. (moveNumber-1) .. ',' .. curLeft .. ','
curLeft = (move[piece] and move[piece][2] or -1)
end
end
switchTop = switchTop .. curTop .. ')'
switchLeft = switchLeft .. curLeft .. ')'
ret = ret .. '{{calculator|type=hidden|formula=' .. switchTop .. '|id=top_piece' .. piece ..'}}'
ret = ret .. '{{calculator|type=hidden|formula=' .. switchLeft .. '|id=left_piece' .. piece .. '}}'
end
return ret
end
function p.board(frame)
local args = frame.args
local pargs = frame:getParent().args
local style = args.style or pargs.style or 'Chess'
nrows, ncols = cfg.dims()
local size = args.size or pargs.size or '26'
local reverse = ( args.reverse or pargs.reverse or '' ):lower() == "true"
local letters = ( args.letters or pargs.letters or 'both' ):lower()
local numbers = ( args.numbers or pargs.numbers or 'both' ):lower()
local header = args[2] or pargs[2] or ''
local footer = args[nrows*ncols + 3] or pargs[nrows*ncols + 3] or ''
local align = ( args[1] or pargs[1] or 'tright' ):lower()
local clear = args.clear or pargs.clear or ( align:match('tright') and 'right' ) or 'none'
local pgn = args.pgn or pargs.pgn
local moves, metadata
local definedPieces, pieceInfo
size = mw.ustring.match( size, '[%d]+' ) or '26' -- remove px from size
assert( pgn, "pgn argument required" )
local pgnModule = require('Module:Pgn')
metadata, moves = pgnModule.main(pgn)
definedPieces, pieceInfo = getPositions( moves, size, reverse )
align = args.align or pargs.align or 'tright'
clear = args.clear or pargs.clear or ( align:match('tright') and 'right' ) or 'none'
header = args.header or pargs.header or ''
footer = args.footer or pargs.footer or ''
if args.animate then
align = align .. ' animate'
footer = footer .. frame:extensionTag( 'templatestyles', '', { src = 'Module:Sandbox/Bawolff/Chessboard/animate.css' } )
end
header = header .. frame:preprocess( '{{calculator button|contents=←|for=move|type=default|formula=max(1, move-1)}}'
.. '{{calculator button|contents=→|for=move|type=default|formula=min(' .. (#moves) .. ', move+1)}}'
.. '{{calculator|type=hidden|default=1|id=move}}'
)
footer = footer .. frame:preprocess( getPieceMoves( definedPieces, pieceInfo ) )
return chessboard( definedPieces, pieceInfo, size, reverse, letters, numbers, header, footer, align, clear )
end
return p
