Question

所以我有这个函数中的代码问题没有识别我的UP，DOWN，LEFT和DOWN键的击键，我想知道为什么。似乎无法解决这个问题。我需要这个以某种方式工作，所以我可以在我编码的程序的另一部分中使用相同的代码。

def movementVariables():
    for event in pygame.event.get():
        if event.type == QUIT:
            pygame.quit()
            sys.exit()
        if event.type == KEYDOWN:
            #testkey
            #if event.key == K_SPACE:
            if event.key == K_LEFT:
                moveRight = False
                moveLeft = True
            if event.key == K_RIGHT:
                moveRight = True
                moveLeft = False
            if event.key == K_UP:
                moveDown = False
                moveUp = True
            if event.key == K_DOWN:
                moveDown = True
                moveUp = False
        if event.type == KEYUP:
            if event.key == K_ESCAPE:
                pygame.quit()
                sys.exit()
            if event.key == K_LEFT:
                moveLeft = False
            if event.key == K_RIGHT:
                moveRight = False
            if event.key == K_UP:
                moveUp = False
            if event.key == K_DOWN:
                moveDown = False

WINDOW_WIDTH = 640
WINDOW_HEIGHT = 400

moveLeft = False
moveRight = False
moveUp = False
moveDown = False

MOVE_SPEED = 0

levelOne = True
while levelOne == True:
        if moveDown and player.bottom < WINDOW_HEIGHT:
            player.top += MOVE_SPEED
        if moveUp and player.top > 0:
            player.top -= MOVE_SPEED
        if moveLeft and player.left > 0:
            player.left -= MOVE_SPEED
        if moveRight and player.right < WINDOW_WIDTH:
            player.right += MOVE_SPEED

我试图发布尽可能少的代码，所以我不会溢出无用的代码。如果您需要整个代码，只需输入。

Answer 1

moveUp，moveDown等是函数movementVariables中的局部变量，它们在函数期间分配，然后在完成时放弃。您需要明确使用外部范围变量：

def movementVariables():
    global moveUp
    global moveDown
    global moveLeft
    global moveRight

或者，更好的是，实际上return并使用函数中的内容：

def movementVariables():
    ...
    return movement

功能困境，键击无法识别

1 个答案: