class UnityEnvironmentException(Exception):
    """
    Related to errors starting and closing environment.
    """
    pass


class UnityActionException(Exception):
    """
    Related to errors with sending actions.
    """
    pass

class UnityTimeOutException(Exception):
    """
    Related to errors with communication timeouts.
    """
    def __init__(self, message, log_file_path = None):
        if log_file_path is not None:
            try:
	            with open(log_file_path, "r") as f:
	                printing = False
	                for l in f:
	                    l=l.strip()
	                    if (l == 'Exception') or (l=='Error'):
	                        printing = True
	                        print('----------------------')
	                    if (l == ''):
	                        printing = False
	                    if printing:
	                        print(l)
	                print("An error might have occured in the environment. "
	                    "You can check the logfile for more information at {}".format(log_file_path))
            except:
                print("An error might have occured in the environment. "
               "No unity-environment.log file could be found.") 
        super(UnityTimeOutException, self).__init__(message)