Suck Tree

function xFuel()
	turtle.select(16)
	turtle.refuel()
	turtle.select(1)
end

function xGetCoalIfNeeded()
	if turtle.getFuelLevel() <= 1000 then
		turtle.select(16)
        turtle.turnRight()
        turtle.suck()
		turtle.turnLeft()
		xFuel()
    end
	turtle.select(1)
end

function xSuck()
	turtle.suck()
	turtle.turnLeft()
	turtle.suck()
	turtle.turnRight()
	turtle.turnRight()
	local success, data = turtle.inspect()
	if success then
		if data.name ~= 'minecraft:chest' then
			turtle.suck()
		end
	else
		turtle.suck()
	end
	turtle.turnLeft()
	turtle.suckUp()
end

function xDropToChest()

	turtle.back()
	turtle.back()
	turtle.back()
	turtle.turnRight()
	turtle.forward()
	turtle.forward()
	turtle.forward()
	turtle.turnLeft()
	turtle.down()
	turtle.forward()
	turtle.forward()

	for n=1,15 do
		turtle.select(n)
        turtle.drop()
    end
	turtle.select(1)

	turtle.back()
	turtle.back()
	turtle.up()
	turtle.turnLeft()
	turtle.forward()
	turtle.forward()
	turtle.forward()
	turtle.turnRight()
	turtle.forward()
	turtle.forward()
	turtle.forward()
	turtle.forward()
end

function xThrow()
	turtle.digUp()
	turtle.up()
	turtle.turnRight()
	turtle.dig()
	turtle.forward()
    for s=1,16 do
        turtle.select(s)
        toThrow = turtle.getItemDetail()
        if toThrow then
            if toThrow.name == 'minecraft:apple' then
                turtle.drop()
            end
            if toThrow.name == 'minecraft:torch' then
                turtle.drop()
            end
        end
    end
	turtle.select(1)
	turtle.digUp()
	turtle.up()
	turtle.dig()
	turtle.forward()
	turtle.dig()
	turtle.forward()
	turtle.digDown()
	turtle.down()
    for s=1,16 do
        turtle.select(s)
        toThrow = turtle.getItemDetail()
        if toThrow then
            if toThrow.name == 'minecraft:sapling' then
                turtle.dropDown()
            end
        end
    end
	turtle.select(1)
	turtle.digUp()
	turtle.up()
	turtle.turnLeft()
	turtle.turnLeft()
	turtle.dig()
	turtle.forward()
	turtle.dig()
	turtle.forward()
	turtle.dig()
	turtle.forward()
	turtle.turnRight()
	turtle.digDown()
	turtle.down()
	turtle.digDown()
	turtle.down()
end


function xForward()
		local success, data = turtle.inspectDown()
		if success then
            if data.name == 'minecraft:netherrack' then
                turtle.turnRight()
            end
			if data.name == 'minecraft:log' then
				xGetCoalIfNeeded()
				xThrow()
				xDropToChest()

				if debut == 0 then
					os.sleep(180)
				end
            end
			turtle.forward()
			xSuck()
		else
			turtle.forward()
			xSuck()
        end
		debut = 0
end

xGetCoalIfNeeded()
debut = 1

while true do
	xForward()
end