Hello,
What is a proper way of creating a 2-dimensional array where the
dimensions may vary?
The array should not be built with Lua tables.
The array must be accessed as usual, i.e. arr[m][n] must be legal syntax.
I wrote the function below but with a feeling there must be a better way
to do that
(mostly because of my poor FFI knowledge).
Thank you.
local ffi = require "ffi"
local function board(height, width)
_G.chess_board_type = (_G.chess_board_type or 0) + 1 -- use a global
to withstand reloading macros
local strtype = "chessboard" .. _G.chess_board_type
ffi.cdef(("typedef int8_t %s[%d][%d];"):format(strtype,height,width))
local brd = ffi.new(strtype)
ffi.fill(brd, height*width, -1)
return brd
end
--
Shmuel
