rectangledig

--This code digs a rectangular area
function storecontents(height)
  for y = 1, height, 1 do
    turtle.up()
  end
  for slot = 1, 16, 1 do
    turtle.select(slot)
  turtle.drop()
  end
  for y = 1, height, 1 do
    turtle.down()
  end
end

local tArgs = {...}
xPos = tArgs[1]
yPos = tArgs[2]
zPos = tArgs[3]
if xPos == nil or yPos == nil or zPos == nil then
  print("Usage: digArea <x> <y> <z>")
  return -1
end
xPos = tonumber(xPos)
yPos = tonumber(yPos)
zPos = tonumber(zPos)
print("Moving...")

x = 0
y = 0
z = 0
flip = false
while true do
  x = x + 1
  turtle.dig()
  turtle.forward()
  if x >= xPos-1 then
    x = 0
    z = z + 1
    if (z >= zPos) then
      z = 0
      y = y + 1
      if y >= yPos then
        storecontents(y-1)
        break
      else
        if y % 2 == 0 then
        storecontents(y-1)
      end
      turtle.turnLeft()
      turtle.turnLeft()
      turtle.digDown()
      turtle.down()
      flip = not flip
    end
  else
    if flip then
      turtle.turnLeft()
      turtle.dig()
      turtle.forward()
      turtle.turnLeft()
    else
      turtle.turnRight()
      turtle.dig()
      turtle.forward()
      turtle.turnRight()
    end
  end
  flip = not flip
  end
end

yPos = yPos - 1
while yPos > 0 do
  yPos = yPos - 1
  turtle.up()
end