exercise 43

class Scene(object):

    def enter(self):
        print "This scene is not yet configured. Subclass it and implement enter()."
        exit(1)


class Engine(object):

    def __init__(self, scene_map):
        self.scene_map = scene_map

    def play(self):
        current_scene = self.scene_map.opening_scene()

        while True:
            print "\n----------"
            next_scene_name = current_scene.enter()
            current_scene = self.scene_map.next_scene(next_scene_name)

class Death(Scene):



    def enter(self):
        print "death text"
        exit(1)

class CentralCorridor(Scene):

    def enter(self):
        print "loads of text goes here"


        action = raw_input("> ")

        if action == "dodge":
            print "loads of text goes here"
            return 'death'


        elif action == 'tell a joke':
            print "loads of text goes here"
            return 'laser_weapon_armory'

        else:
            print "DOES NOT COMPUTE!"
            return 'central_corridor'


class Map(object):

    scenes = {
        'central_corridor': CentralCorridor(),
        'laser_weapon_armory': LaserWeaponArmory(),
        'the_bridge': TheBridge(),
        'escape_pod': EscapePod(),
        'death': Death()
    }


    def __init__(self, start_scene):
        self.start_scene = start_scene

    def next_scene(self, scene_name):
        return Map.scenes.get(scene_name)

    def opening_scene(self):
        return self.next_scene(self.start_scene)

a_map = Map('central_corridor')
a_game = Engine(a_map)
a_game.play()