为什么 pygame.event.get() 在线程中执行时不返回事件？

pygame.event.get() Not Returning Events Inside Thread

Issue:

In a pac-man style game using PyGame, the receiving_inputs function is not retrieving any keyboard events when executed within a thread, while mouse events are still registered.

Code Snippet:

def receiving_inputs(self):
    while True:
        events = pg.event.get()
        for event in events:
            if event.type == pg.KEYDOWN:
                # Handle keyboard input
        time.sleep(1/60)

threading.Thread(target=self.receiving_inputs).start()

Resolution:

PyGame event handling must occur in the main thread.

According to the PyGame event documentation:

The event subsystem should be called from the main thread.

虽然可以从其他执行绪发送事件，但事件伫列必须在主执行绪中处理。因此，解决方案是将 event.get() 呼叫移动到主执行绪中。

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