Saving screens as a file

local function colorToHex(col)
  --# return an empty string when it isn't a valid colour
  if not col or not tonumber(col) then
	return " "
  end
  --# reduce the colour from the 2^16 scale down to numbers 0-15
  col = math.floor( math.log(col) / math.log(2) )
  --# turn the numbers 0-15 into hexadecimal ( 0-F ... hex is 0,1,2,3,4,5,6,7,8,9,a,b,c,d,e,f )
  return string.format("%X", col)
end

local function hexToColor(hex)
  --# if there is no value, or its not a hex character
  if not hex or not tonumber(hex,16) then
	return colors.black
  end
  --# convert from 0-F to 0-15 ... we use 16 because hex is base-16
  hex = tonumber(hex, 16)
  --# return our color
  return 2^hex
end

johnnic, on 03 July 2013 - 10:07 AM said:

How would i make the screen a saveable string in the first place?

Hellkid98, on 03 July 2013 - 01:25 PM said:

If so then you would probably need to track everything that has happened on the screen since startup because it'll need to know what has been printed etc.

theoriginalbit, on 03 July 2013 - 02:40 AM said:

A possible solution that I can think of requires you to have a screen buffer, i.e. a table that contains information about all the background colours, text colours and the characters on the screen.