调用时decisionBar() 不会将图像blit 到屏幕上

Question

    showScreen = True
    if showScreen == True:
        display = pygame.display.set_mode((500, 200))
        pygame.display.set_caption("Decision Bar Window")
        decisionBarImage = pygame.image.load('D:/Adriel/Documents/Python stuff/Games/Basic python game/Images/decision_bar.png')
        pygame.display.flip
        display.blit(decisionBarImage, (250,100))

In my code, the window will open but the image won't blit onto it. Please help.

Answer 1

You have to blit the image to the screen surface before calling pygame.display.flip() .

Then you have to actually call the flip() function. In your code, the () are missing.

Also, you need an event loop, otherwise your window will freeze or maybe not display anything.

So your code should look like this:

    display = pygame.display.set_mode((500, 200))
    pygame.display.set_caption("Decision Bar Window")
    decisionBarImage = pygame.image.load('D:/Adriel/Documents/Python stuff/Games/Basic python game/Images/decision_bar.png')
    display.blit(decisionBarImage, (250,100))

    while True:
        for e in pygame.event.get():
            pass # TODO: handle at least the QUIT event     

        pygame.display.flip()