CODEWITHSUNDEEP
pythonfunctionpygame
alsetalokin
alsetalokin

Reputation: 51

Function dilemma with keystrokes not recognizing

So I have this problem of the code within the function not recognizing the keystrokes of my UP, DOWN, LEFT and DOWN keys and I wonder why. Can't seem to fix this. I need this to work somehow so i can use the same code in another part of the program I'm coding.

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

I tried to post as little code as possible so I don't overflow with useless code. Just type if you need the whole code.

Upvotes: 0

Views: 78

Answers (1)

jonrsharpe
jonrsharpe

Reputation: 122032

moveUp, moveDown etc are local variables in your function movementVariables, and they are assigned during the function then abandoned when it finishes. You need to use the outer scope variables explicitly:

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

Or, better, actually return and use something from the function:

def movementVariables():
    ...
    return movement

Upvotes: 3

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