在 Pygame 中单独移动精灵答案

【问题标题】：Moving sprites individually in Pygame在 Pygame 中单独移动精灵
【发布时间】：2018-11-17 22:46:15
【问题描述】：

我正在尝试让多个精灵遵循与主要玩家相同的算法。这是我的 Sprite 代码

class Zombie(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.Surface((10, 10))
        self.image.fill((250, 0, 0))
        self.rect = self.image.get_rect()
        self.rect.x = random.randrange(0, horizon - self.rect.width)
        self.rect.y = random.randrange(0, -100, -100)
        self.vel = random.randrange(5, 10)

    def update(self):
        # find normalized direction vector (dx, dy) between enemy and player
        dx, dy = player.rect.x - zombie.rect.x, player.rect.y - zombie.rect.y
        dist = math.hypot(dx, dy)
        dx, dy = dx / dist, dy / dist
        # move along this normalized vector towards the player at current speed
        zombie.rect.x += dx * zombie.vel
        zombie.rect.y += dy * zombie.vel

这是我制作多个精灵的代码

all_sprites = pygame.sprite.Group()
mobs = pygame.sprite.Group()
player = Player()
zombie = Zombie()
all_sprites.add(player)
for i in range(8):
    z = Zombie()
    all_sprites.add(z)
    mobs.add(z)

发生的情况是只有一个精灵开始跟随主要玩家。如何让每个精灵遵循相同的代码？

非常感谢 c;

【问题讨论】：

您应该在update 方法中将zombie. 替换为self.
你这个天才

标签： python pygame sprite

【解决方案1】：

将更新方法中的zombie.替换为self.：

class Zombie(pygame.sprite.Sprite):
    # [...]

    def update(self):
        # find normalized direction vector (dx, dy) between enemy and player
        dx, dy = player.rect.x - self.rect.x, player.rect.y - self.rect.y
        dist = math.hypot(dx, dy)
        dx, dy = dx / dist, dy / dist
        # move along this normalized vector towards the player at current speed
        self.rect.x += dx * self.vel
        self.rect.y += dy * self.vel

【讨论】：