Handle the DefineSprite tag.

def _handle_tag_definesprite(self):
        """Handle the DefineSprite tag."""
        obj = _make_object("DefineSprite")
        obj.CharacterID = unpack_ui16(self._src)
        obj.FrameCount = unpack_ui16(self._src)
        tags = self._process_tags()
        obj.ControlTags = tags
        return obj