需要帮助在pygame中创建动态更新分数

Question

I'm intigrating my text based blackjack game with pygame. I can't seem to make the total of the player's hand update. Every time it justs adds it over the previous text, and it becomes impossible to read.

Here are the relevant sections of code:

def update(player, comp):
drawText('Money: $%s' % (money), font, windowSurface, 50, 30)
drawText('Press "H" to hit. Press S to stand', font2, windowSurface, 500, (30))
drawText('Player Total: %s' % (sumHand(player)), font2, windowSurface, 500, (50))
drawText('Dealer Total: %s' % (sumHand(comp)), font2, windowSurface, 650, (50))
pygame.display.update()


        while True:
        update(player, comp)
        mainClock.tick(FPS)
        if sumHand(player) < 22:
            pygame.display.update()
            hCount += 1
            print('Your cards are: %s with a total value of %d' % (player,sumHand(player))) #old
            print('The dealers visible card is %s' % (comp)) #old
            print('Hit or Stand?') #old
            for event in pygame.event.get():
                event = waitForPlayerToPressKey()
                if event.key == ord('h') and hCount == 0:
                    player.append(getCard(cards))
                    cardPrint3(player)
                    update(player, comp)
                elif event.key == ord('h') and hCount == 1:
                    player.append(getCard(cards))
                    cardPrint4(player)
                    update(player, comp)
                elif event.key == ord('h') and hCount == 2:
                    player.append(getCard(cards))
                    cardPrint5(player)
                    update(player, comp)
                elif event.key == ord('h') and hCount == 3:
                    player.append(getCard(cards))
                    cardPrint6(player)
                    update(player, comp)
                    break
                    money+=500
                else:
                    break
            else:
                break

Here is a pastebin of the full program if I missed something important. http://pastebin.com/70EhteQ1

Answer 1

You need to "clear" the screen, or at least the relevant portions of it, before you start drawing again. Otherwise you are just drawing over the existing drawing. Try this at the top of your loop:

while True:
    windowSurface.fill((255, 255, 255)) # this will draw over the entire screen surface with white
    update(player, comp)
    ...