我怎样才能只删除发生碰撞的精灵？

Question

这些是我的类和主循环的一部分，它应该创建精灵，然后在它们碰撞时将它们移除。现在，每次单击鼠标都会删除子弹和僵尸，尽管单击鼠标只会将子弹添加到组中。也许有人知道我做错了什么。

class PlayerBullet(pygame.sprite.Sprite):
    def __init__(self, x, y, mouse_x, mouse_y, ):
        pygame.sprite.Sprite.__init__(self, player_bullets)
        self.x = x
        self.y = y
        self.mouse_x = mouse_x
        self.mouse_y = mouse_y
        self.speed = 20
        self.angle = math.atan2(y-mouse_y, x-mouse_x)
        self.image = circle_image


        self.rect = self.image.get_rect()

    def update(self):
        self.x_vel = math.cos(self.angle) * self.speed
        self.y_vel = math.sin(self.angle) * self.speed
        self.x -= int(self.x_vel)
        self.y -= int(self.y_vel)


    def main(self, display):
        self.update()
        display.blit(self.image, (self.x-8, self.y-7))


class Zombie(pygame.sprite.Sprite):
    def __init__(self, x, y, speed):
        pygame.sprite.Sprite.__init__(self, list_zombies)
        self.x = x
        self.y = y
        self.speed = zombie_speed
        self.image = pygame.image.load("Zombie.png").convert()
        self.rect = self.image.get_rect()

    def update(self):
        self.y += 1

    def main(self, display):
        self.update()

        display.blit(zombie_image_copy, (self.x, self.y))

主循环：

    for event in pygame.event.get():
        if event.type == pygame.QUIT:

            pygame.display.quit()
            pygame.QUIT
            sys.exit()

        if event.type == pygame.MOUSEBUTTONDOWN:
            if event.button == 1:
                player_bullets.add(PlayerBullet(player.x, player.y, mouse_x, mouse_y))

if not list_zombies:
        max_zombie_count += 1
        zombie_speed += 0.5
        while zombie_count < max_zombie_count:
            spawnpoint_x = random.randint(50,1400)
            spawnpoint_y = 0

            list_zombies.add(Zombie(spawnpoint_x, spawnpoint_y, zombie_speed))
            zombie_count += 1
            #zombie += 1

    for bullet in player_bullets:
        bullet.main(display)


    for zombie in list_zombies:
        zombie.main(display)

    for zombie in list_zombies:
        for bullet in player_bullets:
            if pygame.sprite.collide_rect(bullet, zombie):
                bullet.kill()
                zombie.kill()

Answer 1

pygame.Surface.get_rect.get_rect() returns 具有 Surface 对象大小的矩形，始终从 (0, 0) 开始，因为 Surface 对象没有位置。 Surface 在屏幕上的某个位置 blit。
因此，所有矩形都具有相同的位置 (0, 0)，并且碰撞测试对所有对象的计算结果为 True。您必须在碰撞测试之前更新矩形的位置：

for zombie in list_zombies:
     zombie.rect.topleft = (zombie.x, zombie.y)
     for bullet in player_bullets:
         bullet.rect.topleft = (bullet.x, bullet.y)
         if pygame.sprite.collide_rect(bullet, zombie):
               bullet.kill()
               zombie.kill()

我怎样才能只删除发生碰撞的精灵？

How can I only remove sprites that have collided?

python

class

for-loop

pygame

sprite