Question

我正在尝试使这个名为Button的精灵可点击。在玩家到达目标后出现，点击后，精灵应该为新地图消失。单击精灵后我也会这样做，新级别将被加载，但是现在让我们保持完成点击精灵并因此而发生一些事情。

这是感兴趣的代码：

class Button(pg.sprite.Sprite):
    def __init__(self, game, x, y):
        self.groups = game.all_sprites, game.buttons
        pg.sprite.Sprite.__init__(self, self.groups)
        self.game = game
        self.image = pg.Surface((450, 335))
        self.image = game.alert_img        
        self.rect = self.image.get_rect()
        self.x = x
        self.y = y
        self._layer = 2
        self.rect.x = x * TILESIZE
        self.rect.y = y * TILESIZE

def events(self):
    # catch all events here
    for event in pg.event.get():
        if event.type == pg.QUIT:
            self.quit()
        if event.type == pg.KEYDOWN:
            if event.key == pg.K_ESCAPE:
                self.quit()
            if event.key == pg.K_LEFT:
                self.player.move(dx=-1)
            if event.key == pg.K_RIGHT:
                self.player.move(dx=1)
            if event.key == pg.K_UP:
                self.player.move(dy=-1)
            if event.key == pg.K_DOWN:
                self.player.move(dy=1)
        if event.type == pg.USEREVENT + 1:
            self.text_object.kill()
            self.text_object = Text((1760, 570), self.player.actions, self.font)
            self.all_sprites.add(self.text_object)
            Button(self, self.player.x -1.5, self.player.y - 2.4)

请注意，事件是在主要类中，而类按钮，很明显，不是。我认为def事件不是按钮类。

修改两个下来的工作都在下面工作，但skrx他的反应更适合我的个人项目，根据你想要完成的事情，我的解决方案可能更适合你。我建议仔细研究两者。

Answer 1

因此，我没有让用户点击精灵，而是制作了一个名为continue_game的函数，其中游戏停止并等待用户按下空格键以继续游戏，我有在运行空间后没有实质的代码运行，但是kill确实删除了我想要它的精灵，确保我做到了我想做的事。

def continue_game(self):
    user_continue = False
    while not user_continue:
        for event in pg.event.get():
            if event.type == pg.QUIT:
                self.quit()
            if event.type == pg.KEYDOWN:
                if event.key == pg.K_ESCAPE:
                    self.quit()
                if event.key == pg.K_SPACE:
                    self.button.kill()
                    user_continue = True

前面提到的userevent现在看起来像这样：

if event.type == pg.USEREVENT + 1:
            self.text_object.kill()
            self.text_object = Text((1760, 570), self.player.actions, self.font)
            self.all_sprites.add(self.text_object)
            self.button = Button(self, self.player.x -1.5, self.player.y - 2.4)
            self.draw()
            self.continue_game()

Answer 2

我为Game类提供self.button = None属性，并在用户到达目标时分配按钮实例。要检查鼠标是否与按钮发生碰撞，您可以使用event.pos事件的pg.MOUSEBUTTONDOWN并应用相机。我必须为Camera课程提供一个apply_mouse方法，因为event.pos只是一个元组，我需要负相机位置。

# In the `Game` class.
def events(self):
    for event in pg.event.get():
        if event.type == pg.QUIT:
            self.quit()
        elif event.type == pg.MOUSEBUTTONDOWN:
            if self.button is not None:
                mouse = self.camera.apply_mouse(event.pos)
                if self.button.rect.collidepoint(mouse):
                    print('Clicked!')
                    # Remove button from sprite groups and
                    # set self.button to None again.
                    button.kill()
                    self.button = None
        # KEYDOWN events omitted.
        elif event.type == pg.USEREVENT + 1:
            self.text_object.kill()
            self.text_object = Text((1760, 570), self.player.actions, self.font)
            self.all_sprites.add(self.text_object)
            # Check `if self.button is None` so that we don't add
            # several buttons to the groups.
            if self.button is None:
                self.button = Button(self, 1060, 670)


class Button(pg.sprite.Sprite):

    def __init__(self, game, x, y):
        self.groups = game.all_sprites, game.buttons
        pg.sprite.Sprite.__init__(self, self.groups)
        self.image = pg.Surface((450, 335))
        self.image.fill((0, 40, 200))  
        self.rect = self.image.get_rect(topleft=(x, y))
        self._layer = 6


class Camera:
    # I just added this method to the Camera class.
    def apply_mouse(self, pos):
        return (pos[0]-self.camera.x, pos[1]-self.camera.y)

如何使这个精灵可以点击，然后关闭它，这样可以渲染一个新的地图？

2 个答案: