Pygame 运行非常慢

Question

我在用pygame写一个程序。这个程序有很多不同的部分，下面展示了其中的两个。在第二个部分，游戏运行得很正常，但在第一个部分却非常卡顿，尽管它们的更新速度是一样的。我是不是漏掉了什么？顺便提一下，这两个部分在每次游戏循环中只会执行一个。注意，两个部分中以#结尾的行是重复的。

for event in pygame.event.get():#
    if event.type==pygame.QUIT:#
        pygame.quit()#
        sys.exit()#
    if event.type==pygame.KEYDOWN:#
        if event.key==pygame.K_ESCAPE:#
            pygame.quit()#
            sys.exit()#
for ball in balls:#
    ball.update(winrect, walls)#
window.fill(WHITE)#
for box in boxes:#
    pygame.draw.rect(window, box[1], box[0])#
for wall in walls:#
    if wall.orientation==0:#
        pygame.draw.rect(window, BLACK, (wall.left, wall.top, wall.ttopleft, wall.height))#
        pygame.draw.rect(window, BLACK, (wall.bbottomright, wall.top, wall.right-wall.bbottomright, wall.height))#
    else:#
        pygame.draw.rect(window, BLACK, (wall.left, wall.top, wall.width, wall.ttopleft))#
        pygame.draw.rect(window, BLACK, (wall.left, wall.bbottomright, wall.width, wall.bottom-wall.holesize))#
for ball in balls:#
    pygame.draw.circle(window, ball.color, ball.center, round(ball.width/2))#
    pygame.draw.circle(window, BLACK, ball.center, round(ball.width/2), 2)#
window.blit(coverso, winrect)
window.blit(texts['complete'][0], texts['complete'][1])
window.blit(stuff[0], stuff[1])
pygame.display.update()#
pygame.time.Clock().tick(100)#

还有第二个部分：

    #event loop
    for event in pygame.event.get():#
        if event.type==pygame.QUIT:#
            pygame.quit()#
            sys.exit()#
        if event.type==pygame.KEYDOWN:#
            if event.key==pygame.K_ESCAPE:#
                mode='pause'#
    #updates
    updates=[]
    for wall in walls:
        wall.update()
    for ball in balls:#
        updates.append(ball.update(winrect, walls))#similar
    #Seeing if won
    won=True
    for update in updates:
        if not update:
            won=False
    if won:
        if levels[loadinglevel][4]==0:
            levels[loadinglevel][4]=1
        levels[loadinglevel-1][4]=2
        mode='complete'
        stuff=getcomplete(loadinglevel, coins, bigfont, texts['complete'][1].bottom+100, winrect.centerx)
        for wall in walls:
            wall.bbottomright=100000
            wall.ttopleft=90000
        coins+=loadinglevel
    #blitting
    window.fill(WHITE)#
    for box in boxes:#
        pygame.draw.rect(window, box[1], box[0])#
    for wall in walls:#
        if wall.orientation==0:#
            pygame.draw.rect(window, BLACK, (wall.left, wall.top, wall.ttopleft, wall.height))#
            pygame.draw.rect(window, BLACK, (wall.bbottomright, wall.top, wall.right-wall.bbottomright, wall.height))#
        else:#
            pygame.draw.rect(window, BLACK, (wall.left, wall.top, wall.width, wall.ttopleft))#
            pygame.draw.rect(window, BLACK, (wall.left, wall.bbottomright, wall.width, wall.bottom-wall.holesize))#
    for ball in balls:#
        pygame.draw.circle(window, ball.color, ball.center, round(ball.width/2))#
        pygame.draw.circle(window, BLACK, ball.center, round(ball.width/2), 2)#
    pygame.display.update()#
    pygame.time.Clock().tick(100)#
    if mode=='pause':
        window.blit(coverso, winrect)

Answer 1

接着alexpinho98说的内容，你不一定要用颜色键（colorkeys）来处理带透明度的表面。你可以用surface.convert_alpha()来代替。

使用下面的代码可以帮你节省一些时间，避免你需要反复输入.convert_alpha()：

def loadify(imgname):
    return pygame.image.load(imagename).convert_alpha()

Answer 2

第一部分中唯一不重复的内容是：

window.blit(coverso, winrect)
window.blit(texts['complete'][0], texts['complete'][1])
window.blit(stuff[0], stuff[1])

如果你不使用透明度，建议在创建表面时使用surface.convert()。

如果你使用透明度，可以使用颜色键，因为它们比透明表面快得多。

为了加快计算速度，我推荐使用Psyco。

http://www.psyco.sourceforge.net/