Modul:Schachbrett

Die Dokumentation für dieses Modul kann unter Modul:Schachbrett/Doku erstellt werden

local p = {
	piecenames = {p = 'Pawn', r = 'Rook', n = 'Knight', b = 'Bishop', q = 'Queen', k = 'King'},
	colornames = { l = 'White', d = 'Black' }
}

p.f = function(frame)
	local fen = frame.args['fen']
	local size = frame.args['size'] or 30
	local reverse = string.lower(frame.args['reverse'] or '') == "true"

	function rownumFromRow(row)
		return 8 - row
	end
	
	function filecharFromFile(file)
		return string.sub("abcdefgh", file + 1, file + 1)
	end
	
	function coord(ind)
		return (reverse and (7 - ind) * size) or ind * size
	end

	function piecediv(piece, row, file)
		local pieceColor = string.match(piece, '%u') and 'l' or 'd'
		piece = string.lower(piece)
		local alt =  string.format("%s%s %s %s", filecharFromFile(file), rownumFromRow(row), p.colornames[pieceColor], p.piecenames[piece] or piece)
		local img = string.format('[[File:Chess %s%st45.svg|%dx%dpx|alt=%s|%s]]', piece, pieceColor, size, size, alt, alt)
		return string.format('<div style="position:absolute;z-index:3;top:%dpx;left:%dpx;">%s</div>\n', coord(row), coord(file), img)
	end

	function oneRow(s, row)
		local file = 0
		local result = ''
		for piece in string.gmatch(s, "%\w") do
			if string.match(piece, "%\d") then
				file = file + piece
			else
				result = result .. piecediv(piece, row, file)
				file = file + 1
			end
		end
		return result
	end

	local row = 0
	local result = string.format('<div class="chess-fen" style="position:relative;min-width:%dpx;min-height:%dpx;">', size*8,size*8)
	result = result .. string.format('<div style="position:absolute;z-index:0; top:0px; left:0px;">[[File:Chessboard480.png|%dx%dpx|link=]]</div>', size * 8, size * 8)
	for srow in string.gmatch("/" .. fen, "/%w+") do
		result = result .. oneRow(srow, row)
		row = row + 1
	end
	result = result .. '</div>'
	return result
end

return p