Question

我正在尝试为pygame中的角色绘制一个健康栏。我收到一个错误，说出姓名＆＃39; draw_shield_bar＆＃39;没有定义。我尝试过player.draw_shield_bar但仍然无法正常工作。有人可以帮助符号。下面我已经包含了调用函数的代码，然后是定义该函数的播放器类。帮助将不胜感激。

   def draw(self):
        # Game Loop - draw

        whitehouse = pg.image.load("whiteHouseBG.png")
        self.screen.blit(whitehouse,(0,0))

        self.all_sprites.draw(self.screen)
        self.draw_text(str(self.score), 22, WHITE, WIDTH / 2, 15)


        draw_shield_bar(self.screen, 50, 50, player.shield)
        # *after* drawing everything, flip the display
        pg.display.flip()

class Player(pg.sprite.Sprite):
    def __init__(self, game):
        pg.sprite.Sprite.__init__(self)
        self.game = game
        self.walking = False
        self.jumping = False
        self.current_frame = 0
        self.last_update = 0
        self.load_images()
#me:girl standing
        self.image = self.girl_standing[0]
        self.rect = self.image.get_rect()
        self.rect.center = (WIDTH / 2, HEIGHT/2)
        self.pos = vec(WIDTH/2, HEIGHT*3/4)
        self.vel = vec(0, 0)
        self.acc = vec(0, 0)
        self.shield = 100
        self.screen = pg.display.set_mode((WIDTH, HEIGHT))
        self.clock = pg.time.Clock()

    def draw_shield_bar(surf, x, y, pct):
        if pct < 0:
            pct = 0
        BAR_LENGTH = 200
        BAR_HEIGHT = 20
        fill = (pct/100 * BAR_LENGTH)
        outline_rect = pg.Rect(x, y, BAR_LENGTH, BAR_HEIGHT)
        fill_rect = pg.Rect(x, y, fill, BAR_HEIGHT)
        pg.draw.rect(surf, GREEN, fill_rect)
        pg.draw.rect(surf, WHITE, outline_rect, 2)

Answer 1

假设player是Player类的实例，使用player.draw_shield_bar是正确的。它失败的原因可能是因为你忘了使用self作为draw_shield_bar方法的第一个参数。它应该是：

def draw_shield_bar(self, surf, x, y, pct):

如果这不起作用。我想看看完整的Traceback。

如何在pygame中显示字符的运行状况

1 个答案: