Question

当用户点击其中一个按钮时，创建（在屏幕上绘制）精灵是否是个好主意？精灵将在之前创建，用户只能通过将其绘制到屏幕来“初始化”它。不幸的是，我目前获得的代码不起作用，它打印“开始”但不绘制精灵。可能是什么原因？

代码：

if event.type == pygame.MOUSEBUTTONDOWN and event.button == 1:
            if button.collidepoint(pygame.mouse.get_pos()):
                screen.blit(player.image, player.rect.topleft)
                print ("Start")

Answer 1

示例：

blit_player = False

while True:

     # ....

     if event.type == pygame.MOUSEBUTTONDOWN and event.button == 1:
         if button.collidepoint(pygame.mouse.get_pos()):
             blit_player = True
             print ("Start")

     # ....

     if blit_player:
         screen.blit(player.image, player.rect.topleft)

     pygame.display.update

或 - 如果你想添加更多精灵：

blited_sprites = []

while True:

     # ....

     if event.type == pygame.MOUSEBUTTONDOWN and event.button == 1:
         if button.collidepoint(pygame.mouse.get_pos()):
             blited_sprites.append( player )
             print ("Start")

     # ....

     for x in blited_sprites:
         screen.blit(x.image, x.rect.topleft)

     pygame.display.update

Answer 2

它可能没有显示，因为你有一个主循环每秒更新屏幕一定次数。如果你想要显示精灵，你每次更新屏幕时都必须进行blit。

用按钮单击绘制精灵 - Pygame

2 个答案: