linwaiwai

/*
   What this function does:
      Rasterizes a single Field Of View octant on a grid, similar to the way 
      FOV / shadowcasting is implemented in some roguelikes.
      Clips to bitmap

   What it DOES NOT do:
      Subpixel accuracy
      Antialiasing

linwaiwai

function clone(object)
    local lookup_table = {}
    local function _copy(object)
        if type(object) ~= "table" then
            return object
        elseif lookup_table[object] then
            return lookup_table[object]
        end
        local new_table = {}
        lookup_table[object] = new_table