def __init__(self, world, uid=None, **data):
     self.datasources = {}
     for key in self.supported_datasources:
         self.datasources[key] = 0
     self.datatargets = {}
     for key in self.supported_datatargets:
         self.datatargets[key] = 0
     self.datatarget_feedback = {}
     self.datasource_lock = Lock()
     self.datasource_snapshots = {}
     WorldObject.__init__(self, world, category="agents", uid=uid, **data)
     self.snapshot()

 def __init__(self, world, type, uid=None, **data):
     WorldObject.__init__(self, world, type, uid=uid, **data)
     self.lines = data.get('line_names')
     self.name = data.get('name')

 def __init__(self, world, uid=None, **data):
     WorldObject.__init__(self, world, category="objects", uid=uid, **data)
     self.structured_object_type = "Waterhole"

 def __init__(self, world, uid=None, **data):
     self.datasources = {}
     self.datatargets = {}
     self.datatarget_feedback = {}
     self.datasource_lock = Lock()
     WorldObject.__init__(self, world, category='agents', uid=uid, **data)