coupe.lua

saplings = 1 -- the slot where the saplings are
charbon = 2
bois=3
coffre=4

function reEnergy()
    turtle.suckDown()
    turtle.select(charbon)
    if turtle.getFuelLevel() < 800 then
        turtle.refuel()
    end
    if turtle.getFuelLevel() < 100 then
        print('No much fuel !')
        os.shutdown()
    end
    turtle.select(saplings)
end

function pose()
    turtle.select(bois)
    turtle.drop(turtle.getItemCount(bois)-1)
    turtle.select(saplings)
end


turtle.select(saplings) -- select the saplings
while turtle.getItemCount(saplings) > 0 do -- while more saplings in inventory
    turtle.select(coffre)
    turtle.turnLeft()
    if turtle.compare() then
        reEnergy()
        pose()
    end
    turtle.turnRight()
    turtle.select(saplings)
    for i = 1, 5 do -- plant 5 saplings in a row
        turtle.turnRight()
        if not turtle.compare() then -- if not a sapling, then a tree grew
            turtle.dig()
            turtle.forward()
            turtle.select(bois)
            while turtle.compareUp() do -- dig tree out
                turtle.digUp()
                turtle.up()
            end
            turtle.select(saplings)
            while not turtle.detectDown() do -- back down to ground
                turtle.down()
            end
            turtle.back()
            turtle.place() -- put down new sapling
        end
        turtle.turnLeft()
        turtle.forward()
    end
    -- turn around and line up for next pass
    turtle.turnRight()
    turtle.forward()
    turtle.forward()
    turtle.turnRight()
    turtle.forward()
    os.sleep(180) -- sleep for 60 seconds to allow trees to grow
end