treecut

local function treecutter()
  if turtle.detect() == "minecraft:log" then
    turtle.dig()
    turtle.forward()
  else if turtle.detectUp() == "minecraft : log" then
    turtle.digUp()
    turtle.up()
  else if turtle.detectUp() =~ "minecraft : grass" then
    turtle.down()
  end
  turtle.back()
end
local function movement()
  turtle.turnRight()
   for x = 1,4 do
     turtle.forward()
   end
   turtle.turnLeft()
end
for x = 1, 8 do
  if turtle.detect == "minecraft ; log" then
    treecutter()
  else
    movement()
  end
end