为什么我的 pygame 屏幕是静态的？

Question

所以我正在编写一个 pygame 程序，其中矩形从屏幕顶部连续落下，玩家可以四处移动矩形来接住它们。问题是，当我运行程序时，矩形不会自行落下。它们只会在您开始移动角色或输入某种形式的输入时掉落。当输入结束时，它们停止下降。为什么会这样？我觉得这可能与我的 FPS 设置有关，但我以前做过类似的程序而没有出现这个问题。谁能告诉我这是怎么回事？

提前致谢

    `import pygame, sys,random,time
from pygame.locals import*

pygame.init()
mainClock=pygame.time.Clock()

WINDOWWIDTH=400
WINDOWHEIGHT=400
windowSurface=pygame.display.set_mode((WINDOWWIDTH,WINDOWHEIGHT ),0,32)
pygame.display.set_caption('Input with Falling Food')

BLACK=(0,0,0)
GREEN=(0,255,0)
WHITE=(255,255,255)

MOVESPEED=20

FOODSIZEMAX=30
FOODSIZEMIN=10

FOODMOVESPEED=30

foodCounter=0
NEWFOOD=5

player=pygame.Rect(300,100,50,50)
foods=[]
for i in range(10):
    FOODSIZE=random.randint(FOODSIZEMIN,FOODSIZEMAX)
    foods.append(pygame.Rect(random.randint(0,WINDOWWIDTH-FOODSIZE),0,FOODSIZE,FOODSIZE))

moveLeft=False
moveRight=False
moveUp=False
moveDown=False



while True:
    for event in pygame.event.get():
        if event.type==QUIT:
            pygame.quit()
            sys.exit()
        if event.type==KEYDOWN:
            if event.key==K_LEFT or event.key==ord('a'):
                moveRight=False
                moveLeft=True
            if event.key==K_RIGHT or event.key==ord('d'):
                moveLeft=False
                moveRight=True
            if event.key==K_UP or event.key==ord('w'):
                moveDown=False
                moveUp=True
            if event.key==K_DOWN or event.key==ord('s'):
                moveUp=False
                moveDown=True
        if event.type==KEYUP:
            if event.key==K_ESCAPE:
                pygame.quit()
                sys.exit()
            if event.key==K_LEFT or event.key==ord('a'):
                moveLeft=False
            if event.key==K_RIGHT or event.key==ord('d'):
                moveRight=False
            if event.key==K_UP or event.key==ord('w'):
                moveUp=False
            if event.key==K_DOWN or event.key==ord('s'):
                moveDown=False
            if event.key==ord('x'):
                player.top=random.randint(0,WINDOWHEIGHT-player.height)
                player.left=random.randint(0,WINDOWWIDTH-player.width)

        if event.type==MOUSEBUTTONUP:
            foods.append(pygame.Rect(event.pos[0],event.pos[1],FOODSIZE,FOODSIZE))

        foodCounter+=1
        if foodCounter>=NEWFOOD:
            foodCounter=0
            FOODSIZE=random.randint(FOODSIZEMIN,FOODSIZEMAX)
            foods.append(pygame.Rect(random.randint(0,WINDOWWIDTH-FOODSIZE),0,FOODSIZE,FOODSIZE))

        windowSurface.fill(BLACK)

        if moveDown and player.bottom<WINDOWHEIGHT:
            player.top+=MOVESPEED
        if moveUp and player.top>0:
            player.top-=MOVESPEED
        if moveLeft and player.left>0:
            player.left-=MOVESPEED
        if moveRight and player.right<WINDOWWIDTH:
            player.right+=MOVESPEED

        pygame.draw.rect(windowSurface,WHITE,player)

        for i in range(len(foods)):
            foods[i].top+=FOODMOVESPEED


        for food in foods[:]:
            if player.colliderect(food):
                foods.remove(food)
        for food in foods[:]:
            if food.top>=WINDOWHEIGHT:
                foods.remove(food)

        for i in range(len(foods)):
            pygame.draw.rect(windowSurface,GREEN,foods[i])

        pygame.display.update()
        #mainClock.tick(40)
        #time.sleep(0.02)

Answer 1

您需要将主循环代码从 for event in pygame.event.get(): 循环中分离出来。

也就是说，每次时钟滴答时（不仅仅是游戏接收输入事件时）你想要运行的所有内容都应该在该循环之外，就在主 while 循环中。

最起码，让食物动起来：

    for i in range(len(foods)):
        foods[i].top+=FOODMOVESPEED

需要取出来

为什么我的 pygame 屏幕是静态的？

Why is my pygame screen static?

python

pygame