baumfarm

function checkWood
    turtle.select(2)
    if turtle.compare()==true then
        return true
    else
        return false
    end
end

function checkSapling
    while turtle.getItemCount(1)<1 do
        print("Bitte mindestens einen Saetzling in den 1. Slot geben!")
    end
end

function checkFuel
    while turtle.getFuelLevel<=20 do
        turtle.select(2)
        while turtle.refuel(1)==false do
            print("Bitte etwas Treibstoff in den 2. Slot geben!")
        end
    end
end

function safeDig
    while turtle.dig() do
    end
end

function safeForward
    while turtle.forward()==false do
        turtle.attackUp()
    end
end

function safeUp
    while turtle.up()==false do
        turtle.attackUp()
    end
end

function fellTree
    safeDig()
    safeForward()
    while turtle.detectUp()==true do
        turtle.digUp()
        safeUp()
    end
    while turtle.down() do
    end
    turtle.back()
    turtle.down()
    turtle.down()
    safeForward()
    turtle.suckDown()
    turtle.back()
    safeUp()
    safeUp()
    turtle.select(1)
    turtle.place()
end

function turnAround
    turtle.turnLeft()
    turtle.turnLeft()
end

function fillChest
    turnAround()
    while turtle.forward()==true do
    end
    for i=3,16,1 do
        turtle.select(i)
        turtle.drop()
    end
    turnAround()
    while turtle.forward()==true do
    end
end

function main
    checkSapling()
    turtle.select(1)
    turtle.place()
    while true do
        checkSapling()
        checkFuel()
        while checkWood()==false do
        os.sleep(2)
        end
        fellTree()
        if turtle.getItemCount(16)>0 then
            fillChest()
        end
    end
end

main()