paddle对象在pong中的平滑按键事件

Question

我在试着在我的乒乓球比赛中使我的球拍动作更流畅。我的player_paddle1运行平稳，只要我松开钥匙就会停下来。然而，我的另一个player_paddle2，它结合了相同的按键算法，具有另一个paddle，但没有这样做。即使我释放了密钥，它也会继续运行。

        if game_option == "Two Player":
            if event.type == KEYDOWN:
                if event.key == K_UP:
                    player_paddle1.direction = -1
                elif event.key == K_DOWN:
                    player_paddle1.direction = 1

                if event.key == K_w:
                    player_paddle2.direction = -1
                elif event.key == K_s:
                    player_paddle2.direction = 1

            if event.type == KEYUP:
                if event.key == K_UP and player_paddle1.direction == -1:
                    player_paddle1.direction = 0
                elif event.key == K_DOWN and player_paddle1.direction == 1:
                    player_paddle1.direction = 0

                if event.key == K_UP and player_paddle2.direction == -1:
                    print("The key is now up!")
                    player_paddle2.direction = 0 
                elif event.key == K_UP and player_paddle2.direction == 1:
                    player_paddle2.direction = 0

此外，虽然向上键和向下键反应非常灵敏，但W和S键反应不太灵敏，这意味着按下键不会立即导致划桨运动。我该如何解决这个问题呢？

Answer 1

您在KEYUP中检查第二个播放器的K_UP，但它必须是K_w和K_s。

此外，你不需要查看player_paddle2.direction

        if event.type == KEYUP:
            if event.key == K_UP:
                player_paddle1.direction = 0
            elif event.key == K_DOWN:
                player_paddle1.direction = 0

            elif event.key == K_w: # <-- there was K_UP
                print("The key is now up!")
                player_paddle2.direction = 0 
            elif event.key == K_s: # <-- there was K_UP
                player_paddle2.direction = 0

它可以更短

        elif event.type == KEYUP:
            if event.key in (K_UP, K_DOWN)
                player_paddle1.direction = 0

            elif event.key in (K_w, K_s):
                player_paddle2.direction = 0 

顺便说一句:你可以在某些地方使用elif。