pygame顯示的是黑屏

Question

我做了一些研究，看我是否可以通過這種方式解決問題，但似乎沒有找到解決問題的辦法。 我發現了這兩個： 為什么我的pygame顯示器不顯示任何內容？ 對PyGame為何顯示黑屏感到困惑 。 我嘗試使用評論中建議的內容解決問題，但沒有成功，或者問題的原因與我的不同。

當我運行代碼時，pygame窗口顯示出來，但是完全是黑色的，但是沒有錯誤被調用。

所以這是代碼（可能有點長）。

import pygame
import time
import random

pygame.init()

display_width = 700
display_height = 900

player_width = 140
player_height = 100

gameDisplay = pygame.display.set_mode((display_width, display_height))
pygame.display.set_caption('Baby shower')
clock = pygame.time.Clock()

greenkidimg = pygame.image.load('kid green.png')
bluekidimg = pygame.image.load('kid blue.png')
redkidimg = pygame.image.load('kid red.png')
catcherimg = pygame.image.load('catcher.png')
background = pygame.image.load('background.png')
#image loads

def player(x,y):
    gameDisplay.blit(catcherimg,(x,y))

def bluekid(bluex, bluey, bluew, blueh):
    gameDisplay.blit(bluekidimg, (bluex, bluey))

def redkid(redx, redy, redw, redh):
    gameDisplay.blit(redkidimg, (redx,redy))

def greenkid(greenx, greeny, greenw, greenh):
    gameDisplay.blit(greenkidimg(greenx, greeny))

def game_loop():

    x = (display_width*0.45)
    y = (display_height*0.8)

    x_change = 0

    blue_width = 66
    bluex_start = random.randrange (0, display_width-blue_width)
    bluey_start = -600
    blue_speed = 15
    blue_height = 78
    green_width = 66
    greenx_start = random.randrange (0, display_width-green_width)
    greeny_start = -600
    green_speed = 15
    green_height = 78
    red_width = 66
    redx_start =  random.randrange (0, display_width-red_width)
    redy_start = -600
    red_speed = 15
    red_heigth = 78
    #greenkid,redkid,bluekid-start,speed,h/w

    gameExit = False

    while not gameExit:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()

            if event.type == pygame.KEYDOWN:
                if event.type == pygame.K_LEFT:
                    x_change = -20

                elif event.type == pygame.K_RIGHT:
                    x_change = 20

            if event.type == pygame.KEYUP:
                if event.type == pygame.K_LEFT or pygame.K_RIGHT:
                    x_change = 0

    x += x_change

    gameDisplay.blit(background(0,0))
    player(x,y)
    bluekid(bluex, bluey, bluew, blueh)
    redkid(redx, redy, redw, redh)
    greenkid(greenx, greeny, greenw, greenh)
    #display

    pygame.display.update()
    clock.tick(30)

game_loop()
pygame.quit()
quit()

Answer 1

只需要縮進游戲循環中的渲染邏輯，使其成為其中while循環的一部分，如下所示：

while not gameExit:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            quit()

        if event.type == pygame.KEYDOWN:
            if event.type == pygame.K_LEFT:
                x_change = -20

            elif event.type == pygame.K_RIGHT:
                x_change = 20

        if event.type == pygame.KEYUP:
            if event.type == pygame.K_LEFT or pygame.K_RIGHT:
                x_change = 0

    x += x_change

    gameDisplay.blit(background(0,0))
    player(x,y)
    bluekid(bluex, bluey, bluew, blueh)
    redkid(redx, redy, redw, redh)
    greenkid(greenx, greeny, greenw, greenh)
    pygame.display.update()
    clock.tick(30)