def welcome(self):
''' Sets up the game: user names, play against computer, etc. '''
print Ghost._WELCOME_MESSAGE
self._names[0] = raw_input('Player 1, choose your name: ').strip()
self._play_computer = \
self.yes_or_no('Play against a computer opponent? ')
if self._play_computer:
self._computer = SimpleGhostPlayer()
self._names[1] = self._computer.get_name()
else:
self._names[1] = raw_input('Player 2, choose your name: ').strip()
self._max_name_length = max(len(name) for name in self._names)
