class DataBaseError(Exception):
    '''Base class for exceptions in this module.'''
    pass

class LocationInitError(DataBaseError):
    '''Error in initializing Location'''

class TunnelInitError(DataBaseError):
    '''Error in initializing Tunnel'''


class LocationLookUpError(DataBaseError):
    '''Error in finding location in database'''

class DeleteEntryError(DataBaseError):
    '''Error in deleting entry'''

class UsernameLookupFailed(Exception):
    '''Error in username lookup, is the player's nickname set correctly? *stares at aeskdar*'''

class PlayerNotFound(DataBaseError):
    '''Player not found in database.'''

class LocationNameNotUniqueError(DataBaseError):
    '''A location by that name is already in the database.'''