Module:Chessboard mxn/Sandbox: Difference between revisions

Revision as of 20:03, 10 August 2022

Latest revision as of 03:08, 12 August 2022

(11 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

Line 138 ⟶ 139:

local index = 1

local piece = "" -- Piece can also be empty squares

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

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

if piece ~= nil andif piece:len()pstart >== 0index then

index = index + piece = srow:lensub(pstart, pend)

for k index =1,tonumber(piece) dopend + 1

table.insert(res,' ' for k=1,tonumber(piece) do

end table.insert(res,' ')

else end

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

piece pstart = srow:matchfind("%a",index)

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

index = index + piece = srow:lensub(pstart, pstart)

-- l: White (light); d: Black (dark) index = pstart + 1

local color = piece:match( '%u' ) and ' -- l': orWhite (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