Question

我遇到了问题，因此将变量all_sprites调用为pygame.Group（）不会返回任何值，我无法解决原因。

class game:

def __init__(self):
    pg.init()
    self.screen = pg.display.set_mode((screenwidth, screenheight))
    pg.display.set_caption("Gammee")
    self.clock = pg.time.Clock()



def run(self):

    while True:
        self.dt = self.clock.tick(FPS) / 1000
        self.events()
        self.update()
        self.draw()

def new(self):
    self.othersprites = pg.sprite.Group()

def draw(self):
    self.screen.fill(BGCOLOR)

    self.othersprites.draw(self.screen)

    pg.display.flip()

def quit(self):
    pg.quit()
    sys.exit()

def update(self):
    self.othersprites.update()

def events(self):

    for event in pg.event.get():
        if event.type == pg.QUIT:
            self.quit()
g = game()

while True:
    g.new()
    g.run()

这是游戏的代码

class Player(pg.sprite.Sprite):

def __init__(self, game, x, y):

    self.groups = game.all_sprites
    pg.sprite.Sprite.__init__(self, self.groups)
    self.game = game
    self.image = pg.Surface((30, 30), SRCALPHA)
    self.image.fill(YELLOW)
    self.rect = self.image.get_rect()

    self.vx, self.vy = 0, 0
    self.x = x
    self.y = y

def get_keys(self):
    keys = pg.key.get_pressed()
    if keys[pg.K_LEFT] or keys[pg.K_a]:
        self.vx = -PLAYER_SPEED
    if keys[pg.K_RIGHT] or keys[pg.K_d]:
        self.vx = PLAYER_SPEED
    if keys[pg.K_UP] or keys[pg.K_w]:
        self.vy = -PLAYER_SPEED
    if keys[pg.K_DOWN] or keys[pg.K_s]:
        self.vy = PLAYER_SPEED
    if len(keys) != 0:
        self.vx *= 0.9
        self.vy *= 0.9

def update(self):
    self.get_keys()
    self.x += self.vx * self.game.dt
    self.y += self.vy * self.game.dt
    self.rect.x = self.x
    self.rect.y = self.y

然而，没有任何东西被吸引到碎片上。我还测试了

for sprite in self.all_sprites:
    print(sprite)

用于在精灵上输出信息，但现在什么也没做，

关于我做错了什么的任何想法？

Answer 1

您必须在Player类的new方法中创建game的实例。此外，精灵组在othersprites类中称为game，在all_sprites类中称为Player，但名称必须匹配。

class game:

    def new(self):
        self.othersprites = pg.sprite.Group()
        # This is how you create an instance/object.
        self.player = Player(self, 200, 300)


class Player(pg.sprite.Sprite):

    def __init__(self, game, x, y):
        self.groups = game.othersprites

我认为在新方法中将self.player精灵添加到self.othersprites而不是将整个game实例传递给播放器会更好更简单。

class game:

    def new(self):
        self.othersprites = pg.sprite.Group()
        self.player = Player(200, 300)
        self.othersprites.add(self.player)

无法使用组绘制到pygame中的屏幕

1 个答案: