Question

我正在写一个简单的游戏，当我按下＆＃34;空格键＆＃34;时，可以从52扑克中随机播放和显示5张牌。一切正常，除了我想在屏幕上呈现一个文本，指示卡片是否正在洗牌或结果是......以下是代码：

import pygame,sys
from pygame.locals import *

my_clock = pygame.time.Clock()
pygame.init()
color =(200,0,0)
surface_sz = 480
surface = pygame.display.set_mode((surface_sz, surface_sz))
card=pygame.image.load("sprite_sheet_playing_cards.png")
card_width = 73

all_cards=[]
paused=False
text=["Shuffling Cards","Result"]
text_posn=0
my_font = pygame.font.SysFont("Courier", 20)

while True:

    for event in pygame.event.get():

        if event.type == QUIT:
            pygame.quit()
            sys.exit()
        elif event.type == KEYDOWN:
            if event.key == K_SPACE:

                #Shift the text_posn
                text_posn+=1
                text_posn= text_posn%2

                paused = not paused

    surface.fill(color)

    #create 5 crad objects and store them in list
    for card_no in range(5):

        hand_card=cards(card,(50+card_no*card_width,240))
        all_cards.append(hand_card)

    # Start the shuffling
    hand_card.start_shuffle(all_cards,surface)

    #draw the text to surface
    the_text = my_font.render(text[text_posn],True, (0,0,0))
    surface.blit(the_text, (120, 90))

    if paused:
        continue # skip this iteration if paused

    #put everything on display
    pygame.display.flip()

    my_clock.tick(10)

这是我的卡片课程：

class cards(pygame.sprite.Sprite):
    def __init__(self,img,tar_posn):

        pygame.sprite.Sprite.__init__(self)
        self.image = img
        self.posn = tar_posn
        self.x = 0
        self.y= 0

    def start_shuffle(self,all_cards,target_surface):
        #shuffle the card and draw it on screen
        for one_card in all_cards:
            one_card.shuffle()
            one_card.draw(target_surface)

    def shuffle(self):
        import random
        self.x = random.randint(0,12)
        self.y = random.randint(0,4)


    def draw(self,target_surface):

        patch_rect = (self.x * 73, self.y*98,
                   73, 98)
        target_surface.blit(self.image, self.posn, patch_rect)

这个词＆＃34;洗牌卡＆＃34;甚至我按下空格并更改了text_posn。{text_posn按下空格键时确实在0和1之间切换。

我知道问题是当我暂停时，我跳过了pygame.display.flip()所以我永远无法在屏幕上更新已更改的文本。我有什么想法可以暂停屏幕并同时更新文本消息？感谢。

sprite_sheet_playing_cards.png：

Answer 1

您可以在致电if paused: continue之后尝试放置pygame.display.flip() 。

在pygame.display.flip()之前对屏幕或文字进行任何更改，以便在暂停之前更新您对屏幕所做的更改。

好的，我想我已经解决了你的问题。我更改了一些内容，并将在下面发布更新的代码：

import pygame,sys from pygame.locals import * my_clock = pygame.time.Clock() pygame.init() color =(200,0,0) surface_sz = 480 surface = pygame.display.set_mode((surface_sz, surface_sz)) pygame.display.set_caption("Cards") card=pygame.image.load("sprite_sheet_playing_cards.png") card_width = 73 all_cards=[] paused=False text=["Shuffling Cards","Result"] text_posn=0 my_font = pygame.font.SysFont("Courier", 20) while True: for event in pygame.event.get(): if event.type == QUIT: pygame.quit() sys.exit() elif event.type == KEYDOWN: if event.key == K_SPACE: #Shift the text_posn text_posn+=1 text_posn= text_posn%2 paused = not paused surface.fill(color) if not paused: #create 5 card objects and store them in list for card_no in range(5): hand_card=cards(card,(50+card_no*card_width,240)) all_cards.append(hand_card) # Start the shuffling hand_card.start_shuffle(all_cards,surface) #draw the text to surface the_text = my_font.render(text[text_posn],True, (0,0,0)) surface.blit(the_text, (120, 90)) for each_card in all_cards: surface.blit(each_card.image, each_card.posn, each_card.patch_rect) #put everything on display pygame.display.flip() my_clock.tick(10)

更新的卡类：

class cards(pygame.sprite.Sprite): def __init__(self,img,tar_posn): pygame.sprite.Sprite.__init__(self) self.image = img self.posn = tar_posn self.x = 0 self.y= 0 def start_shuffle(self,all_cards,target_surface): #shuffle the card and draw it on screen for one_card in all_cards: one_card.shuffle() one_card.update(target_surface) def shuffle(self): import random self.x = random.randint(0,12) self.y = random.randint(0,4) def update(self,target_surface): self.patch_rect = (self.x * 73, self.y*98,73, 98)

这里的主要“修复”是将大部分洗牌代码放入if语句中，检查游戏是否暂停，如果暂停，它将不会重新洗牌，只会绘制它们并更新屏幕。显示文本的代码也在此if语句中，导致它仅在程序未暂停时显示。

此外：

我将draw（）函数更改为update（）函数，该函数仍然指出patch_rect，我还将其更改为self.patch_rect，以便您可以从主循环中的新for循环访问它。 for循环只会在all_cards中绘制每张卡片。

如果这不是您所追求的效果，请告诉我。

Pygame在暂停时显示文本

1 个答案: