__init__.py 文件源码

def __init__(self, key_list=None):
        """
        :param Union[list,None] key_list: the list of keys to be added right away to our keyboard_registry dict
        """
        super().__init__()

        # stores the keys that we would like to be registered as important
        # - key: pygame keyboard code (e.g. pygame.K_ESCAPE, pygame.K_UP, etc..)
        # - value: True if currently pressed, False otherwise
        # - needs to be ticked in order to yield up-to-date information (this will be done by a GameLoop playing a Screen)
        self.keyboard_registry = {}
        self.descriptions = {}

        if key_list is None:
            key_list = ["up", "down", "left", "right"]
        self.update_keys(key_list)