pygame精灵与背景元素的碰撞[重复]

Question

我一直在寻找解决方案，但任何其他线程都可以帮助我。

我一直在尝试让精灵在背景图像上移动。背景有透明的街道，应该是精灵的可能路径。

我需要检测精灵何时与不透明的背景图像的其他部分发生碰撞。我尝试了完美的碰撞方法，但我认为这不是我的情况的正确解决方案，因为background.rect 没有任何意义。 我也尝试了重叠方法，但它总是返回 true。

图片为 32 位深度，我打电话给convert_alpha()

class sprites(pygame.sprite.Sprite):

    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.x = 200   
        self.y = 300
        self.img= player_sprite
        self.rect = player_sprite.get_rect()
        self.mask = pygame.mask.from_surface(player_sprite)


    def position(self):

        dx = mouse_x-self.x
        dy = self.y-mouse_y
        d = float((dx**2+dy**2)**0.5)

        displ_x = dx/d
        displ_y = dy/d
        self.x += displ_x
        self.y += displ_y

        if  type(self.mask.overlap(object_background.mask,(0,0))):  
            self.x -= displ_x
            self.y -= displ_y


class object_background_class(pygame.sprite.Sprite):

    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.img = object_background_img
        self.rect = object_background_img.get_rect()
        self.mask = pygame.mask.from_surface(object_background_img.convert_alpha())

object_background = object_background_class()
player = sprites()


player.position() changes each time the coordinates of the sprite accordind to the mouse(x,y) and check if with the new x,y of the player make it collides with the background

game_state = False

while not game_state:

    for e in pygame.event.get():
        if e == pygame.QUIT:
            game_state = True
        if e.type == pygame.KEYDOWN and e.type == pygame.K_ESCAPE:
            game_state = True
        if e.type == pygame.KEYDOWN:
            if e.key == 27:
                game_state = True

    mouse_x, mouse_y = pygame.mouse.get_pos()

    player.position()

    DISPLAYSURFACE.blit(color_background, (0, 0))
    DISPLAYSURFACE.blit(player.img, (player.x, player.y))
    DISPLAYSURFACE.blit(object_background.img, (0, 0))


    pygame.display.flip()

Answer 1

游戏画面是一个很大的坐标平面，只要说玩家的x,y坐标超过或低于任何x,y坐标阈值而不是做某事

Answer 2

我也尝试过重叠方法，但它总是返回 true。

当然。 pygame.sprite.collide_mask() 使用 sprite 对象的 .rect 和 .mask 属性进行碰撞检测。
移动播放器并更改播放器的self.x 和self.y 属性后，您必须更新self.rect：

class sprites(pygame.sprite.Sprite):

    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.x = 200   
        self.y = 300
        self.img= player_sprite
        self.rect = player_sprite.get_rect()
        self.mask = pygame.mask.from_surface(player_sprite)

    def position(self):

        dx = mouse_x-self.x
        dy = self.y-mouse_y
        d = float((dx**2+dy**2)**0.5)

        displ_x = dx/d
        displ_y = dy/d
        self.x += displ_x
        self.y += displ_y

        if  type(self.mask.overlap(object_background.mask,(0,0))):  
            self.x -= displ_x
            self.y -= displ_y

        self.rect.topleft = (round(self.x), round(self.y)) # <--- THIS IS MISSING

现在你可以使用collide_mask:

if pygame.sprite.collide_mask(player, object_background):
    # [...]