choptree

local blockExists, blockLog = turtle.inspect()
local step=0
local function doStep()
  step = step + 1
end

while step <= 3 and not turtle.detect() do
  turtle.forward()
  doStep()
  if step == 3 then
    error('Could not find tree!')
  end
end
if blockExists and blockLog["name"] == "minecraft:log" then
  turtle.dig()
  turtle.forward()
  while turtle.detectUp() do
    turtle.digUp()
    turtle.up()
  end
  while not turtle.detectDown() do
    turtle.down()
  end
end
turtle.back()
textutils.slowPrint('Tree chopped')