Spyral SmartMemoize fix

gistfile1.py

    def __call__(self, *args):
        from spyral import director
        frame = director.get_tick()
        if director.get_scene() is not self.scene:
            self.scene = director.get_scene()
            self.cache = {}
        if frame - self.last_clear > 100:
            self.cache = dict((key,value) for key,value in self.cache.items() if frame - value[1] > 250)
            self.last_clear = frame
        try:
            data, oldframe = self.cache[args]
            self.cache[args] = (data, frame)
            return data
        except KeyError:
            res = self.func(*args)
            self.cache[args] = (res, frame)
            return res
        except TypeError:
            print "WARNING: Unhashable type passed to memoize2. Reconsider using this decorator"
            return self.func(*args)