class Map:
  def __init__(self):
    self._position = [0, 0, 0]  # x, y, z
    self.listeners = []
    self.chunks = []
    self.width = 5
    self.height = 5
    self.depth = 3

  @property
  def position(self):
    return self._position

  @position.setter
  def position(self, value):
    self._position = value
    self.notifyPositionListeners()

  def addPositionListener(self, listener):
    self.listeners.append(listener)

  def notifyPositionListeners(self):
    for listener in self.listeners:
      listener(self._position)

  def moveTo(self, x, y, z):
    self.position = [x, y, z]

  def moveRelative(self, x, y, z):
    self.moveTo(
      self._position[0] + x,
      self._position[1] + y,
      self._position[2] + z
    )

# Singleton instance
map = Map()