ChopLargeTree

local altitude = 0
local fuelLevel = turtle.getFuelLevel()
if not (type(fuelLevel) == "string" or fuelLevel > 400) then
    error("May not have enough fuel. Please add some.")
end
for i=1,3 do
    if turtle.detect() then
        break
    else
        turtle.turnLeft()
    end
end
if not turtle.detect() then
    error("Could not find tree")
end
turtle.turnLeft()
turtle.forward()
turtle.turnRight()
if not turtle.detect() then
    turtle.turnRight()
    turtle.forward()
    turtle.turnLeft()
end
turtle.dig()
turtle.forward()
if turtle.detect() then
    turtle.dig()
    while turtle.detectUp() do
        altitude = altitude + 1
        turtle.digUp()
        turtle.up()
        turtle.dig()
    end
    turtle.turnRight()
    turtle.dig()
    turtle.forward()
    turtle.turnLeft()
    turtle.dig()
    for i=1,altitude do
        turtle.digDown()
        turtle.down()
        turtle.dig()
    end
    turtle.turnLeft()
    turtle.forward()
    turtle.turnRight()
else
    while turtle.detectUp() do
        altitude = altitude + 1
        turtle.digUp()
        turtle.up()
    end
    for i=1,altitude do
        turtle.digDown()
        turtle.down()
    end
end
turtle.turnLeft()
turtle.turnLeft()
turtle.forward()
for i=1,16 do
    turtle.select(i)
    turtle.drop()
end
turtle.select(1)

print("Done chopping!")