-- Turtle script to dig a room.
-- Accepts user input for x, y and z
arg = {...}
--(todo): check for arguments, print expected results, and confirm with user
print("setup")
demensions = { x = tonumber(arg[1]), z = tonumber(arg[2]), y = tonumber(arg[3]) }

function dig(distance)
  print("digging")
  local dig_length = distance
  while dig_length > 0 do
    turtle.dig()
    dig_length = dig_length - 1
    turtle.forward()
  end
  while distance > 0 do
    turtle.back()
    distance = distance - 1
  end
end

function new_row()
  turtle.turnLeft()
  turtle.forward()
  turtle.turnRight()
end

function new_layer(first_position)
  turtle.turnRight()
  while first_position > 0 do
    turtle.forward()
    first_position = first_position - 1
  end
  turtle.turnLeft()
  turtle.digUp()
  turtle.moveUp()
end

print("main")
while demensions["y"] > 0 do
  local size_z = demensions["z"]
  while size_z > 0 do
    dig(demensions["x"])
    new_row()
    size_z = size_z - 1
  end
  new_layer(demensions["z"])
  demensions["y"] = demensions["y"] - 1
end