How can you continuously monitor key press status in Pygame?

Obtaining Key Press Status in Pygame

In Pygame, the KEYDOWN and KEYUP events provide limited feedback on key press events, capturing the instant of key depression or release. However, for continuous monitoring of key status, an alternative approach is required.

Solution: Using pygame.key.get_pressed()

The solution lies in utilizing pygame.key.get_pressed() to ascertain the current state of keys. This function returns a Boolean list representing the pressed state of each key. By evaluating specific key indices, the developer can determine if a particular key is currently held down.

Implementation

To implement this approach, integrate the following code snippet into the main application loop:

<code class="python">run = True
while run:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False

    keys = pygame.key.get_pressed()
    if keys[pygame.K_UP]:
        # Execute code for UP key press
    if keys[pygame.K_DOWN]:
        # Execute code for DOWN key press</code>

Note:

pygame.key.get_pressed() updates its state when events are processed through pygame.event.pump() or pygame.event.get(). Therefore, these functions must be invoked before querying the key status.

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