Utiliturtle

-- Utiliturtle

function printUsage()
  print("Usage:")
  print("  util <cmd> <args>")
  print("")
  print("Commands:")
  print("  dig [up|down]")
  print("    - Digs forward (no arg), up or down, but does not move")
  print("  digForward <length>")
  print("    - Digs a 1x1 tunnel forward length")
  print("  digDown <length>")
  print("    - digs a 1x2 tunnel forward by digging forward and then 1 down")
  print("  digUp <length>")
  print("    - digs a 1x2 tunnel forward by digging forward and then 1 up")
  print("  digAll <length>")
  print("    - digs a 1x3 tunnel forward by digging forward and then up and down")
  print("  recharge <charge level> <distance = 1> <direction = up>")
  print("    - waits for turtle to recharge via charging station until charge level")
  print("      goes <distance> in <direction> to move away from charger when complete")
end

local tArgs = { ... }

function digger(len, down, up, back)
  len = len or 1
  down = down or false
  up = up or false
  back = back or true

  if len == nil then
    return false
  end

  for i = 1, len do
    turtle.dig()
    if down then
      turtle.digDown()
    end
    if up then
      turtle.digUp()
    end

    turtle.forward()
  end

  if back then
    for i = 1, len do
      turtle.back()
    end
  end
end

function recharge(level, distance, direction)
  level = level or 1
  distance = distance or 1
  direction = direction or "up"

  fuelLevel = turtle.getFuelLevel()
  while fuelLevel < level + distance do
    print("Current Level: " .. fuelLevel)
    sleep(1)
    fuelLevel = turtle.getFuelLevel()
  end

  if (direction == "left") then
    turtle.turnLeft()
    direction = "forward"
  elseif (direction == "right") then
    turtle.turnRight()
    direction = "forward"
  end

  for i = 1, distance do
    if (direction == "up") then
      turtle.up()
    elseif (direction == "down") then
      turtle.down()
    elseif (direction == "forward") then
      turtle.forward()
    elseif (direction == "back") then
      turtle.back()
    end
  end
end

if #tArgs < 1 then
  printUsage()
elseif tArgs[1] == "dig" then
  if tArgs[2] == nil then
    turtle.dig()
  elseif tArgs[2] == "down" then
    turtle.digDown()
  elseif tArgs[2] == "up" then
    turtle.digUp()
  end
elseif tArgs[1] == "digForward" then
  if tArgs[2] == "-x" then
    digger(tArgs[3], false, false, false)
  else
    digger(tArgs[2], false, false, true)
  end
elseif tArgs[1] == "digDown" then
  if tArgs[2] == "-x" then
    digger(tArgs[3], true, false, false)
  else
    digger(tArgs[2], true, false, true)
  end
elseif tArgs[1] == "digUp" then
  if tArgs[2] == "-x" then
    digger(tArgs[3], false, true, false)
  else
    digger(tArgs[2], false, true, true)
  end
elseif tArgs[1] == "digAll" then
  if tArgs[2] == "-x" then
    digger(tArgs[3], true, true, false)
  else
    digger(tArgs[2], true, true, true)
  end
elseif tArgs[1] == "recharge" then
  recharge(tArgs[2], tArgs[3], tArgs[4])

else
  printUsage()
end