attack

local sensor = peripheral.wrap("left")
turtle.refuel()
local facing = "North"

function getpos(name)
  local pos = sensor.getPlayerByName(name).all().position
  return pos
end
while true do
  local pos = getpos("Blott")
  local ypos = 0
  local xpos = 0
  local zpos = 0
  local count = 1
  for i in pairs(pos) do
    print(pos[i])
    if count == 1 then
      ypos = pos[i]
      print("ypos=" .. ypos)
    elseif count == 2 then
      xpos = pos[i]
      print("xpos=" .. xpos)
    elseif count == 3 then
      zpos = pos[i]
      print("zpos=" .. zpos)
    else
      print("invalid")
    end
    count = count + 1
  end

  if ypos <-0.5 then
    turtle.down()
    print("too high going down")
  elseif ypos >0.5 then
    turtle.up()
    print("up")
  end

  if zpos <-1.5 then
    if facing == "South" then
      turtle.turnLeft()
      turtle.turnLeft()
      facing = "North"
    end
    turtle.forward()
    print("forward")
  elseif zpos >1.5 then
    if facing == "North" then
      turtle.turnLeft()
      turtle.turnLeft()
      facing = "South"
    end
    turtle.forward()
    print("back")
  end

  turtle.attack()
  sleep(0.5)
end