Identify out of object

Hello!

I was wondering how you make a turtle identify it is out of an object. I've made a program that identifies the fuel level but I was wondering how to have the turtle identify it is out of stone and then report this, or return to an area to receive more.

Thanks!

turtle.getItemDetail will do the trick. This function only exists on ComputerCraft 1.6+, however.

local function isOutOfItem(item)
  for i=1,16 do --# 16 slots
	local detail = turtle.getItemDetail(i)
	if detail and detail.name == item then
	  return false --# Item was found in the current slot. This means we have it, so return false.
	end
  end

  return true --# Nothing was found, return true.
end

print("Are we out of stone?")
print(isOutOfItem("minecraft:stone") and "Yes" or "No") --# Prints "Yes" if the turtle is out of stone, "No" if not.

If you only need to check whether a certain slot is empty, you can use turtle.getItemCount.

Thank you so much! This is exactly what I needed.