local args={...}
local function gForward()
  while not turtle.forward() do
    turtle.dig()
  end
end

local function gUp()

  --print("GoingUp!")
  while not turtle.up() do
    turtle.digUp()
  end
end

local function digRow(length)
  for i=2,length do
    gForward()
  end
end

local function dig2Row(length)
  turtle.digUp()
  for i=2,length do
    gForward()
    turtle.digUp()
  end
end

local function placeChest()
  turtle.select(1)
  print("Placing the goods!")
  while not turtle.place() do
    turtle.dig()
  end
  for i=2,16 do
    turtle.select(i)
    while not turtle.getItemCount(i) == 0 do
      turtle.drop()
    end
  end
  turtle.select(1)
  print("I'll take this chest with me.")
  turtle.dig()

end


local function digPlane(length,height)
  local remainingHeight = height
  local firstPass = true
  while remainingHeight > 0 do
    if not firstPass then
      gUp()
    else firstPass = false
    end
    if remainingHeight > 1 then
      dig2Row(length)
      gUp()
      remainingHeight = remainingHeight - 2
    else
      digRow(length)
      remainingHeight = remainingHeight - 1
    end
    turtle.turnLeft()
    turtle.turnLeft()
  end
  for i = 2,height do
    turtle.down()
  end
  if ((remainingHeight + 1) /2 ) % 2 == 1 then
    digRow(length)
    turtle.turnLeft()
    turtle.turnLeft()
  end
  placeChest()
end

local glength = tonumber(args[1])
local gheight = tonumber(args[2])
local gwidth = tonumber(args[3])
print("Okay, let's start!")
print("I hope there is an ender chest in my first inventory slot...")
for j = 1, gwidth do
  print("Starting Plane "..j)
  digPlane(glength,gheight)
  if not (j == gwidth) then
    turtle.turnLeft()
    gForward()
    turtle.turnRight()
  end
end