Module:Chessboard mxn/Sandbox: Difference between revisions

Revision as of 19:39, 10 August 2022

Latest revision as of 03:08, 12 August 2022

(12 intermediate revisions by the same user not shown)

Line 133:

-- Loop over rows, which are delimited by /

for srow in string.gmatch("/" .. fen, "/%w+") do

srow = srow:gsub("/","") -- clean up row

-- Loop over all letters and numbers in the row

-- Since Lua regexes do not have the | operator, we have

for piece in srow:gmatch( "%w" ) do

-- to spell things if (piece:match("%d")) thenout

local index = -- if a digit1

local piece = "" -- Piece can also forbe k=1,pieceempty dosquares

local place = 0

local pstart = 0

local pend = 0

local length = srow:len()

while index <= length do

-- Look for a number. Can have multiple digits

pstart, pend = srow:find("%d+", index)

if pstart == index then

for piece in= srow:gmatchsub(pstart, "%w" pend) do

index = pend + 1

for k=1,tonumber(piece) do

table.insert(res,' ')

end

else

-- If number not found, look for a digitletter (piece on board)

local colorpstart = piecesrow:matchfind( '"%u' a",index) and 'l' or 'd'

pieceif pstart == index piece:lower()then

table.insert(res, piece ..= colorsrow:sub(pstart, pstart)

index = pstart + 1

-- l: White (light); d: Black (dark)

local color = piece:match( '%u' ) and 'l' or 'd'

piece = piece:lower()

table.insert(res, piece .. color)

else

index = length + 1 -- Break loop

end

end

end

end

return res

end