Module:Chessboard mxn/Sandbox: Difference between revisions

Revision as of 19:39, 10 August 2022

Revision as of 20:03, 10 August 2022

Line 134:

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

-- 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 length = table.insertsrow:len(res,' ')

while index < length do

-- Look for a number. Can have multiple digits

piece = srow:match("%d+", index)

if piece ~= nil and piece:len() > 0 then

index = index + piece:len()

for k=1,tonumber(piece) do

table.insert(res,' piece .. color ')

else end

else

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

for piece in= srow:gmatchmatch( "%wa" ,index) do

if piece ~= nil and piece:len() > 0 then

index = index + piece:len()

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

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

piece = piece:lower()

table.insert(res, piece .. color)

-- not a digitelse

index = length + 1 -- Break loop

end

else

-- not a digit

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

piece = piece:lower()

table.insert(res, piece .. color )

end

end