function CutLogs(x)
    addToH = 0
    if h == 0 then
        addToH = 1
    end
    if addToH == 1 then
        while turtle.detectUp() do
            turtle.digUp()
            turtle.up()
            h = h +1
        end
    end
    if addToH == 0 then
        for i=1,h,1 do
            if x == 1 then
                turtle.digUp()
                turtle.up()
            end
            if x == 0 then
                turtle.digDown()
                turtle.down()
            end
        end
    end
end --CutLogs

function CutTree()
    h = 0
    turtle.dig()
    turtle.forward()
    CutLogs(1)
    if h == 0 then
        h = 1
    end
    turtle.dig()
    turtle.forward()
    CutLogs(0)
    turtle.turnRight()
    turtle.dig()
    turtle.forward()
    CutLogs(1)
    turtle.turnRight()
    turtle.dig()
    turtle.forward()
    CutLogs(0)
    turtle.turnRight()
    turtle.dig()
    turtle.forward()
    turtle.turnRight()
    turtle.back()
    h = 0
end --CutTree

function DumpInventory()
    turtle.turnRight()
    turtle.forward()
    turtle.forward()
    for i=1,16,1 do
        turtle.select(i)
        turtle.drop()
    end
    turtle.back()
    turtle.back()
    turtle.turnLeft()
    turtle.select(1)
end --DumpInventory

function Main()
    lat, long, height = gps.locate(2)
    n = turtle.getFuelLevel()
    while true do
        if n > 320 then
            if height == 6 then
                turtle.up()
                if turtle.detect() then
                    turtle.down()
                    CutTree()
                    DumpInventory()
                end
                if not turtle.detect() then
                    turtle.down()
                end
            end
            if height > 6 then
                turtle.down()
            end
            if height < 6 then
                turtle.up()
            end
            if latitude > 135 then
                turtle.back()
            end
            if latitude < 135 then
                turtle.forward()
            end
            if longitude > 1 then
                turtle.turnLeft()
                turtle.forward()
                turtle.turnRight()
            end
            if longitude < 1 then
                turtle.turnRight()
                turtle.forward()
                turtle.turnLeft()
            end
        end
        sleep(15)
        print(n)
    end
end --Main

Main()