Place floor turtle script

args = {...}

local floorType
local orientation
local currentSlot = 2

if #args > 1 then
  if tostring(args[1]) == "top" then
  	floorType = "top"
  elseif tostring(args[1]) == "bottom" then
  	floorType = "bottom"
  elseif not tostring(args[1]) == "top" or not tostring(args[1]) == "bottom" then
  	error("Usage: placeFloor <position> (either top or bottom) <direction> (either left or right)")
  end

  if tostring(args[2]) == "left" then
  	orientation = 1
  elseif tostring(args[2]) == "right" then
  	orientation = 3
  elseif not tostring(args[2]) == "left" or not tostring(args[2]) == "right" then
  	error("Usage: placeFloor <position> (either top or bottom) <direction> (either left or right)")
  end
else
  error("Usage: placeFloor <position> (either top or bottom) <direction> (either left or right)")
end

function gotoNextSlotIfEmpty()
	if turtle.getItemCount(currentSlot) == 0 then
		currentSlot = currentSlot + 1
		turtle.select(currentSlot)
		while not turtle.compareTo(1) do
			currentSlot = currentSlot + 1
			if currentSlot > 16 then
				return false
			end
			turtle.select(currentSlot)
		end
	end
	return true
end

function reSupply()
	resupplied = false
	print("turtle out of items. waiting for new items in slot 2-16. once you place blocks in the 2nd slot it will count to 10 and then continue.")
	repeat
		if turtle.getItemCount(2) > 0 then
			sleep(10)
			resupplied = true
			currentSlot = 2
			turtle.select(currentSlot)
		end
		sleep(0.5)
	until resupplied
end

function checkFuelLevel()
	if turtle.getFuelLevel() < 10 then
		return false
	end
	return true
end

function reFuel()
	refueled = false
	print("turtle out of fuel. waiting for fuel in slot 2-16. once you place fuel in the 2nd slot it will count to 10 and then consume all it can and then continue.")
	repeat
		if turtle.getItemCount(2) > 0 then
			sleep(10)
			for i=2,16 do
				turtle.select(i)
				turtle.refuel()
			end
			currentSlot = 2
			turtle.select(currentSlot)
			refueled = true
		end
	sleep(0.5)
	until refueled
end

function left()
	if turtle then turtle.turnLeft() end
	orientation = orientation - 1
	if orientation < 1 then orientation = 4 end
	return orientation
end

function right()
	if turtle then turtle.turnRight() end
	orientation = orientation + 1
	if orientation > 1 then orientation = 1 end
	return orientation
end

function placeBlock()
	if not gotoNextSlotIfEmpty() then
		reSupply()
	end
	if not checkFuelLevel() then
		reFuel()
	end
	if floorType == "top" then
		if not turtle.detectUp() then
			turtle.placeUp()
		else
			turtle.digUp()
			turtle.placeUp()
		end
	elseif floorType == "bottom" then
		if not turtle.detectDown() then
				turtle.placeDown()
		else
			turtle.digDown()
			turtle.placeDown()
		end
	end
end

function moveTurtle()
	if orientation == 1 then
		left()
		if turtle.detect() then
			error()
		else
			turtle.forward()
			right()
			if not turtle.detect() then
				left()
				left()
				while true do
					if turtle.detect() then
						left()
						break
					end
					turtle.forward()
				end
			else
				left()
			end
		end
		left()
	elseif orientation == 3 then
		right()
		if turtle.detect() then
			error()
		else
			turtle.forward()
			left()
			if not turtle.detect() then
				right()
				right()
				while true do
					if turtle.detect() then
						right()
						break;
					end
					turtle.forward()
				end
			else
				right()
			end
		end
		right()
	end
end

turtle.select(currentSlot)
while true do
	if turtle.detect() then
		placeBlock()
		moveTurtle()
	else
		placeBlock()
		turtle.forward()
	end
end