class Map(object):
    def __init__(self,start_scene):
        pass

    def next_scnene(self,scene_name):
        pass

    def opening_scene(self):
        pass

class Scene(object):
    def enter(self):
        pass

class Engine(object):
    def __init__(self,scene_map):
        pass

    def play(self):
        pass

class Death(Scene):
    def enter(self):
        pass

class Central 
