[1.4.6] Another turtle API function + tweak to "refuel" program

turtle.getCurrentSlot() – Returns the integer of the turtle's current selected slot. (Seems useless at first glance, but it does have some use)

Tweak to "refuel" program:

– The template program "refuel" will now return the turtle to it's initial selected slot at program termination.

The reason for the second one is more of an annoyance. Personally I'm tired of fueling my turtle in creative, and then having to use lua to change the turtle's selected slot. I guess you could always make your program select the desired slot beforehand.

zeekkay, on 11 January 2013 - 11:50 AM said:

I guess you could always make your program select the desired slot beforehand.

That is exactly what you should do. It doesn't make sense if you don't.

zeekkay, on 11 January 2013 - 11:50 AM said:

turtle.getCurrentSlot()

Added in two lines of code:

local old = turtle.select
turtle.select = function(slot) turtle.slot = slot return old(slot) end

turtle.select(2)
print(turtle.slot)

I don't see why they don't add this to bios.lua:

local function wrap(fn)
  local value
  return function(...)
    local old = value
    value = ...
    fn(...)
    return old
  end
end
turtle.select = wrap(turtle.select)
term.setTextColor = wrap(term.setTextColor)
term.setBackgroundColor = wrap(term.setBackgroundColor)

but I'm sure they have their reasons. ("They" being cloudy and dan)

Sorry, immibis, but such wraping would not work with term redirection.