myTurtle.lua

forward = "forward"
back = "back"
up = "up"
down = "down"
left = "left"
right = "right"

--
function turn(dir)
  if dir == left then
    return turtle.turnLeft()
  elseif dir == right then
    return turtle.turnRight()
  elseif dir == back then
    turtle.turnLeft()
    return turtle.turnLeft()
  end
end

-- dig
function dig(dir)
  local ret = true
  if dir == forward then
    return turtle.dig()
  elseif dir == back then
    turn(back)
    ret = turtle.dig()
    turn(back)
    return ret
  elseif dir == up then
    return turtle.digUp()
  elseif dir == down then
    return turtle.digDown()
  elseif dir == left then
    turn(left)
    ret = turtle.dig()
    turn(right)
    return ret
  elseif dir == right then
    turn(right)
    ret = turtle.dig()
    turn(left)
    return ret
  end

  return false
end


-- move
function move(dir, keepDir)
  local ret = false

  if dir == forward then
    return turtle.forward()
  elseif dir == back then
    return turtle.back()
  elseif dir == up then
    return turtle.up()
  elseif dir == down then
    return turtle.down()
  elseif dir == left then
    turn(left)
    ret = turtle.forward()
    if keepDir then
      turn(right)
    end
    return ret
  elseif dir == right then
    turn(right)
    ret = turtle.forward()
    if keepDir then
      turn(left)
    end
    return ret
  end
end

-- vim: ft=lua