Enderman Farm Center

-- 26 ladders in slot 13
-- 64 ladders in slot 14
-- 30 solid blocks in slot 15
-- 30 pistons in slot 16

local curSlot = 16
turtle.select(16)

function checkFuel(min)
        if turtle.getFuelLevel() < min then
                turtle.select(1)
                turtle.refuel(1)
                turtle.select(curSlot)
        end
end

function getMaterial()
        if turtle.getItemCount(curSlot) == 0 then
                for s=16,1,-1 do
                        if turtle.getItemCount(s) > 0 then
                                break
                        end
                end
                turtle.select(s)
                curSlot = s
        end
end

function platform()
	checkFuel(50)
	getMaterial()
        turtle.placeDown()
	for i=1,14,1 do
                turtle.forward()
                getMaterial()
                turtle.placeDown()
        end
	turtle.turnLeft()
        turtle.forward()
        getMaterial()
        turtle.placeDown()
	for i=1,14,1 do
                turtle.forward()
                getMaterial()
                turtle.placeDown()
        end
        turtle.turnLeft()
        turtle.forward()
        turtle.turnLeft()
end

function manyPlatforms()
	platform()
	turtle.up()
	platform()
	for i=1,46,1 do
                turtle.down()
        end
	platform()
	turtle.up()
	platform()
	turtle.up()
	platform()
	for i=1,7,1 do
		turtle.forward()
	end
	turtle.turnRight()
	turtle.forward()
	turtle.forward()
	for i=1,46,1 do
		turtle.down()
	end
end

manyPlatforms()